diff -Nru nomad-0.3.2+dfsg/api/agent_test.go nomad-0.4.0+dfsg/api/agent_test.go --- nomad-0.3.2+dfsg/api/agent_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/agent_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -124,39 +124,6 @@ // TODO: test force-leave on an existing node } -func TestAgent_SetServers(t *testing.T) { - c, s := makeClient(t, nil, func(c *testutil.TestServerConfig) { - c.Client.Enabled = true - c.Server.BootstrapExpect = 0 - }) - defer s.Stop() - a := c.Agent() - - // Attempting to set an empty list errors - err := a.SetServers([]string{}) - if err == nil { - t.Fatalf("expected error, got nothing") - } - - // Setting a valid list works - err = a.SetServers([]string{"foo", "bar"}) - if err != nil { - t.Fatalf("err: %s", err) - } - - // Returns the proper list of servers - out, err := a.Servers() - if err != nil { - t.Fatalf("err: %s", err) - } - if n := len(out); n != 2 { - t.Fatalf("expected 2 servers, got: %d", n) - } - if out[0] != "foo:4647" || out[1] != "bar:4647" { - t.Fatalf("bad server list: %v", out) - } -} - func (a *AgentMember) String() string { return "{Name: " + a.Name + " Region: " + a.Tags["region"] + " DC: " + a.Tags["dc"] + "}" } diff -Nru nomad-0.3.2+dfsg/api/allocations.go nomad-0.4.0+dfsg/api/allocations.go --- nomad-0.3.2+dfsg/api/allocations.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/allocations.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,8 +1,11 @@ package api import ( + "fmt" "sort" "time" + + "github.com/hashicorp/go-cleanhttp" ) // Allocations is used to query the alloc-related endpoints. @@ -40,6 +43,26 @@ return &resp, qm, nil } +func (a *Allocations) Stats(alloc *Allocation, q *QueryOptions) (*AllocResourceUsage, error) { + node, _, err := a.client.Nodes().Info(alloc.NodeID, q) + if err != nil { + return nil, err + } + if node.HTTPAddr == "" { + return nil, fmt.Errorf("http addr of the node where alloc %q is running is not advertised", alloc.ID) + } + client, err := NewClient(&Config{ + Address: fmt.Sprintf("http://%s", node.HTTPAddr), + HttpClient: cleanhttp.DefaultClient(), + }) + if err != nil { + return nil, err + } + var resp AllocResourceUsage + _, err = client.query("/v1/client/allocation/"+alloc.ID+"/stats", &resp, nil) + return &resp, err +} + // Allocation is used for serialization of allocations. type Allocation struct { ID string diff -Nru nomad-0.3.2+dfsg/api/api.go nomad-0.4.0+dfsg/api/api.go --- nomad-0.3.2+dfsg/api/api.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/api.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,6 +2,7 @@ import ( "bytes" + "compress/gzip" "encoding/json" "fmt" "io" @@ -29,7 +30,7 @@ WaitIndex uint64 // WaitTime is used to bound the duration of a wait. - // Defaults to that of the Config, but can be overriden. + // Defaults to that of the Config, but can be overridden. WaitTime time.Duration // If set, used as prefix for resource list searches @@ -125,6 +126,11 @@ return client, nil } +// SetRegion sets the region to forward API requests to. +func (c *Client) SetRegion(region string) { + c.config.Region = region +} + // request is used to help build up a request type request struct { config *Config @@ -194,6 +200,7 @@ return nil, err } + req.Header.Add("Accept-Encoding", "gzip") req.URL.Host = r.url.Host req.URL.Scheme = r.url.Scheme req.Host = r.url.Host @@ -231,6 +238,26 @@ return r } +// multiCloser is to wrap a ReadCloser such that when close is called, multiple +// Closes occur. +type multiCloser struct { + reader io.Reader + inorderClose []io.Closer +} + +func (m *multiCloser) Close() error { + for _, c := range m.inorderClose { + if err := c.Close(); err != nil { + return err + } + } + return nil +} + +func (m *multiCloser) Read(p []byte) (int, error) { + return m.reader.Read(p) +} + // doRequest runs a request with our client func (c *Client) doRequest(r *request) (time.Duration, *http.Response, error) { req, err := r.toHTTP() @@ -240,6 +267,29 @@ start := time.Now() resp, err := c.config.HttpClient.Do(req) diff := time.Now().Sub(start) + + // If the response is compressed, we swap the body's reader. + if resp != nil && resp.Header != nil { + var reader io.ReadCloser + switch resp.Header.Get("Content-Encoding") { + case "gzip": + greader, err := gzip.NewReader(resp.Body) + if err != nil { + return 0, nil, err + } + + // The gzip reader doesn't close the wrapped reader so we use + // multiCloser. + reader = &multiCloser{ + reader: greader, + inorderClose: []io.Closer{greader, resp.Body}, + } + default: + reader = resp.Body + } + resp.Body = reader + } + return diff, resp, err } diff -Nru nomad-0.3.2+dfsg/api/evaluations.go nomad-0.4.0+dfsg/api/evaluations.go --- nomad-0.3.2+dfsg/api/evaluations.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/evaluations.go 2016-06-28 21:26:34.000000000 +0000 @@ -67,6 +67,8 @@ Wait time.Duration NextEval string PreviousEval string + BlockedEval string + FailedTGAllocs map[string]*AllocationMetric CreateIndex uint64 ModifyIndex uint64 } diff -Nru nomad-0.3.2+dfsg/api/jobs.go nomad-0.4.0+dfsg/api/jobs.go --- nomad-0.3.2+dfsg/api/jobs.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/jobs.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,6 +1,7 @@ package api import ( + "fmt" "sort" "time" ) @@ -13,6 +14,12 @@ JobTypeBatch = "batch" ) +const ( + // RegisterEnforceIndexErrPrefix is the prefix to use in errors caused by + // enforcing the job modify index during registers. + RegisterEnforceIndexErrPrefix = "Enforcing job modify index" +) + // Jobs is used to access the job-specific endpoints. type Jobs struct { client *Client @@ -26,9 +33,27 @@ // Register is used to register a new job. It returns the ID // of the evaluation, along with any errors encountered. func (j *Jobs) Register(job *Job, q *WriteOptions) (string, *WriteMeta, error) { + + var resp registerJobResponse + + req := &RegisterJobRequest{Job: job} + wm, err := j.client.write("/v1/jobs", req, &resp, q) + if err != nil { + return "", nil, err + } + return resp.EvalID, wm, nil +} + +// EnforceRegister is used to register a job enforcing its job modify index. +func (j *Jobs) EnforceRegister(job *Job, modifyIndex uint64, q *WriteOptions) (string, *WriteMeta, error) { + var resp registerJobResponse - req := &RegisterJobRequest{job} + req := &RegisterJobRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: modifyIndex, + } wm, err := j.client.write("/v1/jobs", req, &resp, q) if err != nil { return "", nil, err @@ -116,6 +141,24 @@ return resp.EvalID, wm, nil } +func (j *Jobs) Plan(job *Job, diff bool, q *WriteOptions) (*JobPlanResponse, *WriteMeta, error) { + if job == nil { + return nil, nil, fmt.Errorf("must pass non-nil job") + } + + var resp JobPlanResponse + req := &JobPlanRequest{ + Job: job, + Diff: diff, + } + wm, err := j.client.write("/v1/job/"+job.ID+"/plan", req, &resp, q) + if err != nil { + return nil, nil, err + } + + return &resp, wm, nil +} + // periodicForceResponse is used to deserialize a force response type periodicForceResponse struct { EvalID string @@ -153,6 +196,7 @@ StatusDescription string CreateIndex uint64 ModifyIndex uint64 + JobModifyIndex uint64 } // JobListStub is used to return a subset of information about @@ -167,6 +211,7 @@ StatusDescription string CreateIndex uint64 ModifyIndex uint64 + JobModifyIndex uint64 } // JobIDSort is used to sort jobs by their job ID's. @@ -244,7 +289,9 @@ // RegisterJobRequest is used to serialize a job registration type RegisterJobRequest struct { - Job *Job + Job *Job + EnforceIndex bool + JobModifyIndex uint64 } // registerJobResponse is used to deserialize a job response @@ -256,3 +303,69 @@ type deregisterJobResponse struct { EvalID string } + +type JobPlanRequest struct { + Job *Job + Diff bool +} + +type JobPlanResponse struct { + JobModifyIndex uint64 + CreatedEvals []*Evaluation + Diff *JobDiff + Annotations *PlanAnnotations + FailedTGAllocs map[string]*AllocationMetric + NextPeriodicLaunch time.Time +} + +type JobDiff struct { + Type string + ID string + Fields []*FieldDiff + Objects []*ObjectDiff + TaskGroups []*TaskGroupDiff +} + +type TaskGroupDiff struct { + Type string + Name string + Fields []*FieldDiff + Objects []*ObjectDiff + Tasks []*TaskDiff + Updates map[string]uint64 +} + +type TaskDiff struct { + Type string + Name string + Fields []*FieldDiff + Objects []*ObjectDiff + Annotations []string +} + +type FieldDiff struct { + Type string + Name string + Old, New string + Annotations []string +} + +type ObjectDiff struct { + Type string + Name string + Fields []*FieldDiff + Objects []*ObjectDiff +} + +type PlanAnnotations struct { + DesiredTGUpdates map[string]*DesiredUpdates +} + +type DesiredUpdates struct { + Ignore uint64 + Place uint64 + Migrate uint64 + Stop uint64 + InPlaceUpdate uint64 + DestructiveUpdate uint64 +} diff -Nru nomad-0.3.2+dfsg/api/jobs_test.go nomad-0.4.0+dfsg/api/jobs_test.go --- nomad-0.3.2+dfsg/api/jobs_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/jobs_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -50,6 +50,74 @@ } } +func TestJobs_EnforceRegister(t *testing.T) { + c, s := makeClient(t, nil, nil) + defer s.Stop() + jobs := c.Jobs() + + // Listing jobs before registering returns nothing + resp, qm, err := jobs.List(nil) + if err != nil { + t.Fatalf("err: %s", err) + } + if qm.LastIndex != 0 { + t.Fatalf("bad index: %d", qm.LastIndex) + } + if n := len(resp); n != 0 { + t.Fatalf("expected 0 jobs, got: %d", n) + } + + // Create a job and attempt to register it with an incorrect index. + job := testJob() + eval, wm, err := jobs.EnforceRegister(job, 10, nil) + if err == nil || !strings.Contains(err.Error(), RegisterEnforceIndexErrPrefix) { + t.Fatalf("expected enforcement error: %v", err) + } + + // Register + eval, wm, err = jobs.EnforceRegister(job, 0, nil) + if err != nil { + t.Fatalf("err: %s", err) + } + if eval == "" { + t.Fatalf("missing eval id") + } + assertWriteMeta(t, wm) + + // Query the jobs back out again + resp, qm, err = jobs.List(nil) + if err != nil { + t.Fatalf("err: %s", err) + } + assertQueryMeta(t, qm) + + // Check that we got the expected response + if len(resp) != 1 { + t.Fatalf("bad length: %d", len(resp)) + } + + if resp[0].ID != job.ID { + t.Fatalf("bad: %#v", resp[0]) + } + curIndex := resp[0].JobModifyIndex + + // Fail at incorrect index + eval, wm, err = jobs.EnforceRegister(job, 123456, nil) + if err == nil || !strings.Contains(err.Error(), RegisterEnforceIndexErrPrefix) { + t.Fatalf("expected enforcement error: %v", err) + } + + // Works at correct index + eval, wm, err = jobs.EnforceRegister(job, curIndex, nil) + if err != nil { + t.Fatalf("err: %s", err) + } + if eval == "" { + t.Fatalf("missing eval id") + } + assertWriteMeta(t, wm) +} + func TestJobs_Info(t *testing.T) { c, s := makeClient(t, nil, nil) defer s.Stop() @@ -350,6 +418,76 @@ t.Fatalf("evaluation %q missing", evalID) } +func TestJobs_Plan(t *testing.T) { + c, s := makeClient(t, nil, nil) + defer s.Stop() + jobs := c.Jobs() + + // Create a job and attempt to register it + job := testJob() + eval, wm, err := jobs.Register(job, nil) + if err != nil { + t.Fatalf("err: %s", err) + } + if eval == "" { + t.Fatalf("missing eval id") + } + assertWriteMeta(t, wm) + + // Check that passing a nil job fails + if _, _, err := jobs.Plan(nil, true, nil); err == nil { + t.Fatalf("expect an error when job isn't provided") + } + + // Make a plan request + planResp, wm, err := jobs.Plan(job, true, nil) + if err != nil { + t.Fatalf("err: %s", err) + } + if planResp == nil { + t.Fatalf("nil response") + } + + if planResp.JobModifyIndex == 0 { + t.Fatalf("bad JobModifyIndex value: %#v", planResp) + } + if planResp.Diff == nil { + t.Fatalf("got nil diff: %#v", planResp) + } + if planResp.Annotations == nil { + t.Fatalf("got nil annotations: %#v", planResp) + } + // Can make this assertion because there are no clients. + if len(planResp.CreatedEvals) == 0 { + t.Fatalf("got no CreatedEvals: %#v", planResp) + } + + // Make a plan request w/o the diff + planResp, wm, err = jobs.Plan(job, false, nil) + if err != nil { + t.Fatalf("err: %s", err) + } + assertWriteMeta(t, wm) + + if planResp == nil { + t.Fatalf("nil response") + } + + if planResp.JobModifyIndex == 0 { + t.Fatalf("bad JobModifyIndex value: %d", planResp.JobModifyIndex) + } + if planResp.Diff != nil { + t.Fatalf("got non-nil diff: %#v", planResp) + } + if planResp.Annotations == nil { + t.Fatalf("got nil annotations: %#v", planResp) + } + // Can make this assertion because there are no clients. + if len(planResp.CreatedEvals) == 0 { + t.Fatalf("got no CreatedEvals: %#v", planResp) + } +} + func TestJobs_NewBatchJob(t *testing.T) { job := NewBatchJob("job1", "myjob", "region1", 5) expect := &Job{ diff -Nru nomad-0.3.2+dfsg/api/nodes.go nomad-0.4.0+dfsg/api/nodes.go --- nomad-0.3.2+dfsg/api/nodes.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/nodes.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,8 +1,11 @@ package api import ( + "fmt" "sort" "strconv" + + "github.com/hashicorp/go-cleanhttp" ) // Nodes is used to query node-related API endpoints @@ -71,6 +74,28 @@ return resp.EvalID, wm, nil } +func (n *Nodes) Stats(nodeID string, q *QueryOptions) (*HostStats, error) { + node, _, err := n.client.Nodes().Info(nodeID, q) + if err != nil { + return nil, err + } + if node.HTTPAddr == "" { + return nil, fmt.Errorf("http addr of the node %q is running is not advertised", nodeID) + } + client, err := NewClient(&Config{ + Address: fmt.Sprintf("http://%s", node.HTTPAddr), + HttpClient: cleanhttp.DefaultClient(), + }) + if err != nil { + return nil, err + } + var resp HostStats + if _, err := client.query("/v1/client/stats", &resp, nil); err != nil { + return nil, err + } + return &resp, nil +} + // Node is used to deserialize a node entry. type Node struct { ID string @@ -90,6 +115,39 @@ ModifyIndex uint64 } +// HostStats represents resource usage stats of the host running a Nomad client +type HostStats struct { + Memory *HostMemoryStats + CPU []*HostCPUStats + DiskStats []*HostDiskStats + Uptime uint64 + CPUTicksConsumed float64 +} + +type HostMemoryStats struct { + Total uint64 + Available uint64 + Used uint64 + Free uint64 +} + +type HostCPUStats struct { + CPU string + User float64 + System float64 + Idle float64 +} + +type HostDiskStats struct { + Device string + Mountpoint string + Size uint64 + Used uint64 + Available uint64 + UsedPercent float64 + InodesUsedPercent float64 +} + // NodeListStub is a subset of information returned during // node list operations. type NodeListStub struct { diff -Nru nomad-0.3.2+dfsg/api/nodes_test.go nomad-0.4.0+dfsg/api/nodes_test.go --- nomad-0.3.2+dfsg/api/nodes_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/nodes_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -50,7 +50,7 @@ var err error // Get the node ID - var nodeID, dc string + var nodeID string testutil.WaitForResult(func() (bool, error) { out, _, err := nodes.List(nil) if err != nil { @@ -60,7 +60,6 @@ return false, fmt.Errorf("expected 1 node, got: %d", n) } nodeID = out[0].ID - dc = out[0].Datacenter return true, nil }, func(err error) { t.Fatalf("err: %s", err) diff -Nru nomad-0.3.2+dfsg/api/tasks.go nomad-0.4.0+dfsg/api/tasks.go --- nomad-0.3.2+dfsg/api/tasks.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/api/tasks.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,6 +4,50 @@ "time" ) +// MemoryStats holds memory usage related stats +type MemoryStats struct { + RSS uint64 + Cache uint64 + Swap uint64 + MaxUsage uint64 + KernelUsage uint64 + KernelMaxUsage uint64 + Measured []string +} + +// CpuStats holds cpu usage related stats +type CpuStats struct { + SystemMode float64 + UserMode float64 + TotalTicks float64 + ThrottledPeriods uint64 + ThrottledTime uint64 + Percent float64 + Measured []string +} + +// ResourceUsage holds information related to cpu and memory stats +type ResourceUsage struct { + MemoryStats *MemoryStats + CpuStats *CpuStats +} + +// TaskResourceUsage holds aggregated resource usage of all processes in a Task +// and the resource usage of the individual pids +type TaskResourceUsage struct { + ResourceUsage *ResourceUsage + Timestamp int64 + Pids map[string]*ResourceUsage +} + +// AllocResourceUsage holds the aggregated task resource usage of the +// allocation. +type AllocResourceUsage struct { + ResourceUsage *ResourceUsage + Tasks map[string]*TaskResourceUsage + Timestamp int64 +} + // RestartPolicy defines how the Nomad client restarts // tasks in a taskgroup when they fail type RestartPolicy struct { @@ -27,7 +71,7 @@ Timeout time.Duration } -// The Service model represents a Consul service defintion +// The Service model represents a Consul service definition type Service struct { Id string Name string @@ -150,7 +194,7 @@ } // TaskState tracks the current state of a task and events that caused state -// transistions. +// transitions. type TaskState struct { State string Events []*TaskEvent diff -Nru nomad-0.3.2+dfsg/CHANGELOG.md nomad-0.4.0+dfsg/CHANGELOG.md --- nomad-0.3.2+dfsg/CHANGELOG.md 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/CHANGELOG.md 2016-06-28 21:26:34.000000000 +0000 @@ -1,3 +1,68 @@ +## 0.4.0 + +__BACKWARDS INCOMPATIBILITIES:__ + * api: Tasks are no longer allowed to have slashes in their name [GH-1210] + * cli: Remove the eval-monitor command. Users should switch to `nomad + eval-status -monitor`. + * config: Consul configuration has been moved from client options map to + consul block under client configuration + * driver/docker: Enabled SSL by default for pulling images from docker + registries. [GH-1336] + +IMPROVEMENTS: + * core: Scheduler reuses blocked evaluations to avoid unbounded creation of + evaluations under high contention [GH-1199] + * core: Scheduler stores placement failures in evaluations, no longer + generating failed allocations for debug information [GH-1188] + * api: Faster JSON response encoding [GH-1182] + * api: Gzip compress HTTP API requests [GH-1203] + * api: Plan api introduced for the Job endpoint [GH-1168] + * api: Job endpoint can enforce Job Modify Index to ensure job is being + modified from a known state [GH-1243] + * api/client: Add resource usage APIs for retrieving tasks/allocations/host + resource usage [GH-1189] + * cli: Faster when displaying large amounts ouptuts [GH-1362] + * cli: Deprecate `eval-monitor` and introduce `eval-status` [GH-1206] + * cli: Unify the `fs` family of commands to be a single command [GH-1150] + * cli: Introduce `nomad plan` to dry-run a job through the scheduler and + determine its effects [GH-1181] + * cli: node-status command displays host resource usage and allocation + resources [GH-1261] + * cli: Region flag and environment variable introduced to set region + forwarding. Automatic region forwarding for run and plan [GH-1237] + * client: If Consul is available, automatically bootstrap Nomad Client + using the `_nomad` service in Consul. Nomad Servers now register + themselves with Consul to make this possible. [GH-1201] + * drivers: Qemu and Java can be run without an artifact being download. Useful + if the artifact exists inside a chrooted directory [GH-1262] + * driver/docker: Added a client options to set SELinux labels for container + bind mounts. [GH-788] + * driver/docker: Enabled SSL by default for pulling images from docker + registries. [GH-1336] + * server: If Consul is available, automatically bootstrap Nomad Servers + using the `_nomad` service in Consul. [GH-1276] + +BUG FIXES: + * core: Improve garbage collection of allocations and nodes [GH-1256] + * core: Fix a potential deadlock if establishing leadership fails and is + retried [GH-1231] + * core: Do not restart successful batch jobs when the node is removed/drained + [GH-1205] + * core: Fix an issue in which the scheduler could be invoked with insufficient + state [GH-1339] + * core: Updated User, Meta or Resources in a task cause create/destroy updates + [GH-1128, GH-1153] + * core: Fix blocked evaluations being run without properly accounting for + priority [GH-1183] + * api: Tasks are no longer allowed to have slashes in their name [GH-1210] + * client: Delete tmp files used to communicate with execcutor [GH-1241] + * client: Prevent the client from restoring with incorrect task state [GH-1294] + * discovery: Ensure service and check names are unique [GH-1143, GH-1144] + * driver/docker: Ensure docker client doesn't time out after a minute. + [GH-1184] + * driver/java: Fix issue in which Java on darwin attempted to chroot [GH-1262] + * driver/docker: Fix issue in which logs could be spliced [GH-1322] + ## 0.3.2 (April 22, 2016) IMPROVEMENTS: diff -Nru nomad-0.3.2+dfsg/client/allocdir/alloc_dir_freebsd.go nomad-0.4.0+dfsg/client/allocdir/alloc_dir_freebsd.go --- nomad-0.3.2+dfsg/client/allocdir/alloc_dir_freebsd.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/allocdir/alloc_dir_freebsd.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,26 @@ +package allocdir + +import ( + "syscall" +) + +// Hardlinks the shared directory. As a side-effect the shared directory and +// task directory must be on the same filesystem. +func (d *AllocDir) mountSharedDir(dir string) error { + return syscall.Link(d.SharedDir, dir) +} + +func (d *AllocDir) unmountSharedDir(dir string) error { + return syscall.Unlink(dir) +} + +// MountSpecialDirs mounts the dev and proc file system on the chroot of the +// task. It's a no-op on FreeBSD right now. +func (d *AllocDir) MountSpecialDirs(taskDir string) error { + return nil +} + +// unmountSpecialDirs unmounts the dev and proc file system from the chroot +func (d *AllocDir) unmountSpecialDirs(taskDir string) error { + return nil +} diff -Nru nomad-0.3.2+dfsg/client/allocdir/alloc_dir.go nomad-0.4.0+dfsg/client/allocdir/alloc_dir.go --- nomad-0.3.2+dfsg/client/allocdir/alloc_dir.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/allocdir/alloc_dir.go 2016-06-28 21:26:34.000000000 +0000 @@ -89,8 +89,7 @@ if err := d.unmountSharedDir(taskAlloc); err != nil { mErr.Errors = append(mErr.Errors, fmt.Errorf("failed to unmount shared alloc dir %q: %v", taskAlloc, err)) - } - if err := os.RemoveAll(taskAlloc); err != nil { + } else if err := os.RemoveAll(taskAlloc); err != nil { mErr.Errors = append(mErr.Errors, fmt.Errorf("failed to delete shared alloc dir %q: %v", taskAlloc, err)) } @@ -110,7 +109,7 @@ return fmt.Errorf("Failed to make the alloc directory %v: %v", d.AllocDir, err) } - // Make the shared directory and make it availabe to all user/groups. + // Make the shared directory and make it available to all user/groups. if err := os.MkdirAll(d.SharedDir, 0777); err != nil { return err } @@ -173,7 +172,7 @@ // Embed takes a mapping of absolute directory or file paths on the host to // their intended, relative location within the task directory. Embed attempts // hardlink and then defaults to copying. If the path exists on the host and -// can't be embeded an error is returned. +// can't be embedded an error is returned. func (d *AllocDir) Embed(task string, entries map[string]string) error { taskdir, ok := d.TaskDirs[task] if !ok { diff -Nru nomad-0.3.2+dfsg/client/allocdir/alloc_dir_linux.go nomad-0.4.0+dfsg/client/allocdir/alloc_dir_linux.go --- nomad-0.3.2+dfsg/client/allocdir/alloc_dir_linux.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/allocdir/alloc_dir_linux.go 2016-06-28 21:26:34.000000000 +0000 @@ -60,9 +60,7 @@ if d.pathExists(dev) { if err := syscall.Unmount(dev, 0); err != nil { errs = multierror.Append(errs, fmt.Errorf("Failed to unmount dev (%v): %v", dev, err)) - } - - if err := os.RemoveAll(dev); err != nil { + } else if err := os.RemoveAll(dev); err != nil { errs = multierror.Append(errs, fmt.Errorf("Failed to delete dev directory (%v): %v", dev, err)) } } @@ -72,9 +70,7 @@ if d.pathExists(proc) { if err := syscall.Unmount(proc, 0); err != nil { errs = multierror.Append(errs, fmt.Errorf("Failed to unmount proc (%v): %v", proc, err)) - } - - if err := os.RemoveAll(proc); err != nil { + } else if err := os.RemoveAll(proc); err != nil { errs = multierror.Append(errs, fmt.Errorf("Failed to delete proc directory (%v): %v", dev, err)) } } diff -Nru nomad-0.3.2+dfsg/client/allocdir/alloc_dir_posix.go nomad-0.4.0+dfsg/client/allocdir/alloc_dir_posix.go --- nomad-0.3.2+dfsg/client/allocdir/alloc_dir_posix.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/allocdir/alloc_dir_posix.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,71 +0,0 @@ -// +build !windows - -// Functions shared between linux/darwin. -package allocdir - -import ( - "fmt" - "os" - "os/user" - "strconv" - "syscall" -) - -func (d *AllocDir) linkOrCopy(src, dst string, perm os.FileMode) error { - // Attempt to hardlink. - if err := os.Link(src, dst); err == nil { - return nil - } - - return fileCopy(src, dst, perm) -} - -func (d *AllocDir) dropDirPermissions(path string) error { - // Can't do anything if not root. - if syscall.Geteuid() != 0 { - return nil - } - - u, err := user.Lookup("nobody") - if err != nil { - return err - } - - uid, err := getUid(u) - if err != nil { - return err - } - - gid, err := getGid(u) - if err != nil { - return err - } - - if err := os.Chown(path, uid, gid); err != nil { - return fmt.Errorf("Couldn't change owner/group of %v to (uid: %v, gid: %v): %v", path, uid, gid, err) - } - - if err := os.Chmod(path, 0777); err != nil { - return fmt.Errorf("Chmod(%v) failed: %v", path, err) - } - - return nil -} - -func getUid(u *user.User) (int, error) { - uid, err := strconv.Atoi(u.Uid) - if err != nil { - return 0, fmt.Errorf("Unable to convert Uid to an int: %v", err) - } - - return uid, nil -} - -func getGid(u *user.User) (int, error) { - gid, err := strconv.Atoi(u.Gid) - if err != nil { - return 0, fmt.Errorf("Unable to convert Gid to an int: %v", err) - } - - return gid, nil -} diff -Nru nomad-0.3.2+dfsg/client/allocdir/alloc_dir_unix.go nomad-0.4.0+dfsg/client/allocdir/alloc_dir_unix.go --- nomad-0.3.2+dfsg/client/allocdir/alloc_dir_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/allocdir/alloc_dir_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,72 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +// Functions shared between linux/darwin. +package allocdir + +import ( + "fmt" + "os" + "os/user" + "strconv" + + "golang.org/x/sys/unix" +) + +func (d *AllocDir) linkOrCopy(src, dst string, perm os.FileMode) error { + // Attempt to hardlink. + if err := os.Link(src, dst); err == nil { + return nil + } + + return fileCopy(src, dst, perm) +} + +func (d *AllocDir) dropDirPermissions(path string) error { + // Can't do anything if not root. + if unix.Geteuid() != 0 { + return nil + } + + u, err := user.Lookup("nobody") + if err != nil { + return err + } + + uid, err := getUid(u) + if err != nil { + return err + } + + gid, err := getGid(u) + if err != nil { + return err + } + + if err := os.Chown(path, uid, gid); err != nil { + return fmt.Errorf("Couldn't change owner/group of %v to (uid: %v, gid: %v): %v", path, uid, gid, err) + } + + if err := os.Chmod(path, 0777); err != nil { + return fmt.Errorf("Chmod(%v) failed: %v", path, err) + } + + return nil +} + +func getUid(u *user.User) (int, error) { + uid, err := strconv.Atoi(u.Uid) + if err != nil { + return 0, fmt.Errorf("Unable to convert Uid to an int: %v", err) + } + + return uid, nil +} + +func getGid(u *user.User) (int, error) { + gid, err := strconv.Atoi(u.Gid) + if err != nil { + return 0, fmt.Errorf("Unable to convert Gid to an int: %v", err) + } + + return gid, nil +} diff -Nru nomad-0.3.2+dfsg/client/alloc_runner.go nomad-0.4.0+dfsg/client/alloc_runner.go --- nomad-0.3.2+dfsg/client/alloc_runner.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/alloc_runner.go 2016-06-28 21:26:34.000000000 +0000 @@ -13,21 +13,27 @@ "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver" "github.com/hashicorp/nomad/nomad/structs" + + cstructs "github.com/hashicorp/nomad/client/structs" ) const ( // taskReceivedSyncLimit is how long the client will wait before sending // that a task was received to the server. The client does not immediately - // send that the task was received to the server because another transistion + // send that the task was received to the server because another transition // to running or failed is likely to occur immediately after and a single - // update will transfer all past state information. If not other transistion - // has occured up to this limit, we will send to the server. + // update will transfer all past state information. If not other transition + // has occurred up to this limit, we will send to the server. taskReceivedSyncLimit = 30 * time.Second ) // AllocStateUpdater is used to update the status of an allocation type AllocStateUpdater func(alloc *structs.Allocation) +type AllocStatsReporter interface { + LatestAllocStats(taskFilter string) (*cstructs.AllocResourceUsage, error) +} + // AllocRunner is used to wrap an allocation and provide the execution context. type AllocRunner struct { config *config.Config @@ -110,6 +116,17 @@ r.allocClientDescription = snap.AllocClientDescription r.taskStates = snap.TaskStates + var snapshotErrors multierror.Error + if r.alloc == nil { + snapshotErrors.Errors = append(snapshotErrors.Errors, fmt.Errorf("alloc_runner snapshot includes a nil allocation")) + } + if r.ctx == nil { + snapshotErrors.Errors = append(snapshotErrors.Errors, fmt.Errorf("alloc_runner snapshot includes a nil context")) + } + if e := snapshotErrors.ErrorOrNil(); e != nil { + return e + } + // Restore the task runners var mErr multierror.Error for name, state := range r.taskStates { @@ -218,7 +235,7 @@ r.allocLock.Lock() alloc := r.alloc.Copy() - // The status has explicitely been set. + // The status has explicitly been set. if r.allocClientStatus != "" || r.allocClientDescription != "" { alloc.ClientStatus = r.allocClientStatus alloc.ClientDescription = r.allocClientDescription @@ -471,6 +488,70 @@ } } +// StatsReporter returns an interface to query resource usage statistics of an +// allocation +func (r *AllocRunner) StatsReporter() AllocStatsReporter { + return r +} + +// LatestAllocStats returns the latest allocation stats. If the optional taskFilter is set +// the allocation stats will only include the given task. +func (r *AllocRunner) LatestAllocStats(taskFilter string) (*cstructs.AllocResourceUsage, error) { + astat := &cstructs.AllocResourceUsage{ + Tasks: make(map[string]*cstructs.TaskResourceUsage), + } + + var flat []*cstructs.TaskResourceUsage + if taskFilter != "" { + r.taskLock.RLock() + tr, ok := r.tasks[taskFilter] + r.taskLock.RUnlock() + if !ok { + return nil, fmt.Errorf("allocation %q has no task %q", r.alloc.ID, taskFilter) + } + l := tr.LatestResourceUsage() + if l != nil { + astat.Tasks[taskFilter] = l + flat = []*cstructs.TaskResourceUsage{l} + astat.Timestamp = l.Timestamp + } + } else { + // Get the task runners + r.taskLock.RLock() + runners := make([]*TaskRunner, 0, len(r.tasks)) + for _, tr := range r.tasks { + runners = append(runners, tr) + } + r.taskLock.RUnlock() + + for _, tr := range runners { + l := tr.LatestResourceUsage() + if l != nil { + astat.Tasks[tr.task.Name] = l + flat = append(flat, l) + if l.Timestamp > astat.Timestamp { + astat.Timestamp = l.Timestamp + } + } + } + } + + astat.ResourceUsage = sumTaskResourceUsage(flat) + return astat, nil +} + +// sumTaskResourceUsage takes a set of task resources and sums their resources +func sumTaskResourceUsage(usages []*cstructs.TaskResourceUsage) *cstructs.ResourceUsage { + summed := &cstructs.ResourceUsage{ + MemoryStats: &cstructs.MemoryStats{}, + CpuStats: &cstructs.CpuStats{}, + } + for _, usage := range usages { + summed.Add(usage.ResourceUsage) + } + return summed +} + // shouldUpdate takes the AllocModifyIndex of an allocation sent from the server and // checks if the current running allocation is behind and should be updated. func (r *AllocRunner) shouldUpdate(serverIndex uint64) bool { diff -Nru nomad-0.3.2+dfsg/client/alloc_runner_test.go nomad-0.4.0+dfsg/client/alloc_runner_test.go --- nomad-0.3.2+dfsg/client/alloc_runner_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/alloc_runner_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -10,6 +10,7 @@ "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/nomad/testutil" + "github.com/hashicorp/nomad/client/config" ctestutil "github.com/hashicorp/nomad/client/testutil" ) @@ -25,7 +26,7 @@ func testAllocRunner(restarts bool) (*MockAllocStateUpdater, *AllocRunner) { logger := testLogger() - conf := DefaultConfig() + conf := config.DefaultConfig() conf.StateDir = os.TempDir() conf.AllocDir = os.TempDir() upd := &MockAllocStateUpdater{} diff -Nru nomad-0.3.2+dfsg/client/client.go nomad-0.4.0+dfsg/client/client.go --- nomad-0.3.2+dfsg/client/client.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/client.go 2016-06-28 21:26:34.000000000 +0000 @@ -8,16 +8,21 @@ "os" "path/filepath" "strconv" - "strings" "sync" + "sync/atomic" "time" + "github.com/armon/go-metrics" + consulapi "github.com/hashicorp/consul/api" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/go-multierror" "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" - "github.com/hashicorp/nomad/client/consul" "github.com/hashicorp/nomad/client/driver" "github.com/hashicorp/nomad/client/fingerprint" + "github.com/hashicorp/nomad/client/rpcproxy" + "github.com/hashicorp/nomad/client/stats" + "github.com/hashicorp/nomad/command/agent/consul" "github.com/hashicorp/nomad/nomad" "github.com/hashicorp/nomad/nomad/structs" "github.com/mitchellh/hashstructure" @@ -32,6 +37,10 @@ // open to a server clientMaxStreams = 2 + // datacenterQueryLimit searches through up to this many adjacent + // datacenters looking for the Nomad server service. + datacenterQueryLimit = 9 + // registerRetryIntv is minimum interval on which we retry // registration. We pick a value between this and 2x this. registerRetryIntv = 15 * time.Second @@ -67,18 +76,17 @@ // allocSyncRetryIntv is the interval on which we retry updating // the status of the allocation allocSyncRetryIntv = 5 * time.Second - - // consulSyncInterval is the interval at which the client syncs with consul - // to remove services and checks which are no longer valid - consulSyncInterval = 15 * time.Second ) -// DefaultConfig returns the default configuration -func DefaultConfig() *config.Config { - return &config.Config{ - LogOutput: os.Stderr, - Region: "global", - } +// ClientStatsReporter exposes all the APIs related to resource usage of a Nomad +// Client +type ClientStatsReporter interface { + // GetAllocStats returns the AllocStatsReporter for the passed allocation. + // If it does not exist an error is reported. + GetAllocStats(allocID string) (AllocStatsReporter, error) + + // LatestHostStats returns the latest resource usage stats for the host + LatestHostStats() *stats.HostStats } // Client is used to implement the client interaction with Nomad. Clients @@ -94,18 +102,26 @@ logger *log.Logger - lastServer net.Addr - lastRPCTime time.Time - lastServerLock sync.Mutex - - servers []string - serverLock sync.RWMutex + rpcProxy *rpcproxy.RPCProxy connPool *nomad.ConnPool - lastHeartbeat time.Time - heartbeatTTL time.Duration - heartbeatLock sync.Mutex + // lastHeartbeatFromQuorum is an atomic int32 acting as a bool. When + // true, the last heartbeat message had a leader. When false (0), + // the last heartbeat did not include the RPC address of the leader, + // indicating that the server is in the minority or middle of an + // election. + lastHeartbeatFromQuorum int32 + + // consulPullHeartbeatDeadline is the deadline at which this Nomad + // Agent will begin polling Consul for a list of Nomad Servers. When + // Nomad Clients are heartbeating successfully with Nomad Servers, + // Nomad Clients do not poll Consul to populate their backup server + // list. + consulPullHeartbeatDeadline time.Time + lastHeartbeat time.Time + heartbeatTTL time.Duration + heartbeatLock sync.Mutex // allocs is the current set of allocations allocs map[string]*AllocRunner @@ -114,7 +130,13 @@ // allocUpdates stores allocations that need to be synced to the server. allocUpdates chan *structs.Allocation - consulService *consul.ConsulService + // consulSyncer advertises this Nomad Agent with Consul + consulSyncer *consul.Syncer + + // HostStatsCollector collects host resource usage stats + hostStatsCollector *stats.HostStatsCollector + resourceUsage *stats.HostStats + resourceUsageLock sync.RWMutex shutdown bool shutdownCh chan struct{} @@ -122,19 +144,18 @@ } // NewClient is used to create a new client from the given configuration -func NewClient(cfg *config.Config) (*Client, error) { - // Create a logger - logger := log.New(cfg.LogOutput, "", log.LstdFlags) - +func NewClient(cfg *config.Config, consulSyncer *consul.Syncer, logger *log.Logger) (*Client, error) { // Create the client c := &Client{ - config: cfg, - start: time.Now(), - connPool: nomad.NewPool(cfg.LogOutput, clientRPCCache, clientMaxStreams, nil), - logger: logger, - allocs: make(map[string]*AllocRunner), - allocUpdates: make(chan *structs.Allocation, 64), - shutdownCh: make(chan struct{}), + config: cfg, + consulSyncer: consulSyncer, + start: time.Now(), + connPool: nomad.NewPool(cfg.LogOutput, clientRPCCache, clientMaxStreams, nil), + logger: logger, + hostStatsCollector: stats.NewHostStatsCollector(), + allocs: make(map[string]*AllocRunner), + allocUpdates: make(chan *structs.Allocation, 64), + shutdownCh: make(chan struct{}), } // Initialize the client @@ -160,21 +181,29 @@ // Setup the reserved resources c.reservePorts() - // Set up the known servers list - c.SetServers(c.config.Servers) - // Store the config copy before restoring state but after it has been // initialized. + c.configLock.Lock() c.configCopy = c.config.Copy() + c.configLock.Unlock() + + // Create the RPC Proxy and bootstrap with the preconfigured list of + // static servers + c.configLock.RLock() + c.rpcProxy = rpcproxy.NewRPCProxy(c.logger, c.shutdownCh, c, c.connPool) + for _, serverAddr := range c.configCopy.Servers { + c.rpcProxy.AddPrimaryServer(serverAddr) + } + c.configLock.RUnlock() // Restore the state if err := c.restoreState(); err != nil { return nil, fmt.Errorf("failed to restore state: %v", err) } - // Setup the consul client - if err := c.setupConsulClient(); err != nil { - return nil, fmt.Errorf("failed to create consul client: %v") + // Setup the Consul syncer + if err := c.setupConsulSyncer(); err != nil { + return nil, fmt.Errorf("failed to create client Consul syncer: %v") } // Register and then start heartbeating to the servers. @@ -189,8 +218,18 @@ // Start the client! go c.run() - // Start the consul sync - go c.syncConsul() + // Start collecting stats + go c.collectHostStats() + + // Start the RPCProxy maintenance task. This task periodically + // shuffles the list of Nomad Server Endpoints this Client will use + // when communicating with Nomad Servers via RPC. This is done in + // order to prevent server fixation in stable Nomad clusters. This + // task actively populates the active list of Nomad Server Endpoints + // from information from the Nomad Client heartbeats. If a heartbeat + // times out and there are no Nomad servers available, this data is + // populated by periodically polling Consul, if available. + go c.rpcProxy.Run() return c, nil } @@ -238,6 +277,31 @@ return nil } +// Datacenter returns the datacenter for the given client +func (c *Client) Datacenter() string { + c.configLock.RLock() + dc := c.configCopy.Node.Datacenter + c.configLock.RUnlock() + return dc +} + +// Region returns the region for the given client +func (c *Client) Region() string { + return c.config.Region +} + +// RPCMajorVersion returns the structs.ApiMajorVersion supported by the +// client. +func (c *Client) RPCMajorVersion() int { + return structs.ApiMajorVersion +} + +// RPCMinorVersion returns the structs.ApiMinorVersion supported by the +// client. +func (c *Client) RPCMinorVersion() int { + return structs.ApiMinorVersion +} + // Shutdown is used to tear down the client func (c *Client) Shutdown() error { c.logger.Printf("[INFO] client: shutting down") @@ -250,10 +314,12 @@ // Destroy all the running allocations. if c.config.DevMode { + c.allocLock.Lock() for _, ar := range c.allocs { ar.Destroy() <-ar.WaitCh() } + c.allocLock.Unlock() } c.shutdown = true @@ -264,104 +330,24 @@ // RPC is used to forward an RPC call to a nomad server, or fail if no servers func (c *Client) RPC(method string, args interface{}, reply interface{}) error { - // Invoke the RPCHandle if it exists + // Invoke the RPCHandler if it exists if c.config.RPCHandler != nil { return c.config.RPCHandler.RPC(method, args, reply) } // Pick a server to request from - addr, err := c.pickServer() - if err != nil { - return err + server := c.rpcProxy.FindServer() + if server == nil { + return fmt.Errorf("no known servers") } // Make the RPC request - err = c.connPool.RPC(c.config.Region, addr, 1, method, args, reply) - - // Update the last server information - c.lastServerLock.Lock() - if err != nil { - c.lastServer = nil - c.lastRPCTime = time.Time{} - } else { - c.lastServer = addr - c.lastRPCTime = time.Now() - } - c.lastServerLock.Unlock() - return err -} - -// pickServer is used to pick a target RPC server -func (c *Client) pickServer() (net.Addr, error) { - c.lastServerLock.Lock() - defer c.lastServerLock.Unlock() - - // Check for a valid last-used server - if c.lastServer != nil && time.Now().Sub(c.lastRPCTime) < clientRPCCache { - return c.lastServer, nil - } - - // Bail if we can't find any servers - servers := c.Servers() - if len(servers) == 0 { - return nil, fmt.Errorf("no known servers") - } - - // Shuffle so we don't always use the same server - shuffleStrings(servers) - - // Try to resolve each server - for i := 0; i < len(servers); i++ { - addr, err := net.ResolveTCPAddr("tcp", servers[i]) - if err == nil { - c.lastServer = addr - c.lastRPCTime = time.Now() - return addr, nil - } - c.logger.Printf("[WARN] client: failed to resolve '%s': %s", servers[i], err) - } - - // Bail if we reach this point - return nil, fmt.Errorf("failed to resolve any servers") -} - -// Servers is used to return the current known servers list. When an agent -// is first started, this list comes directly from configuration files. -func (c *Client) Servers() []string { - c.serverLock.RLock() - defer c.serverLock.RUnlock() - return c.servers -} - -// SetServers is used to modify the known servers list. This avoids forcing -// a config rollout + rolling restart and enables auto-join features. The -// full set of servers is passed to support adding and/or removing servers. -func (c *Client) SetServers(servers []string) { - c.serverLock.Lock() - defer c.serverLock.Unlock() - if servers == nil { - servers = make([]string, 0) - } - // net.ResolveTCPAddr requires port to be set, if one is not provided, supply default port - // Using net.SplitHostPort in the event of IPv6 addresses with multiple colons. - // IPv6 addresses must be passed in with brackets, - // i.e: [::1]:4647 or [::1] - setServers := make([]string, len(servers)) - copy(setServers, servers) - for i := 0; i < len(setServers); i++ { - if _, _, err := net.SplitHostPort(setServers[i]); err != nil { - // multiple errors can be returned here, only searching for missing - if strings.Contains(err.Error(), "missing port") { - c.logger.Printf("[WARN] client: port not specified, using default port") - setServers[i] = net.JoinHostPort(setServers[i], "4647") - } else { - c.logger.Printf("[WARN] client: server address %q invalid: %v", setServers[i], err) - } - } + if err := c.connPool.RPC(c.Region(), server.Addr, c.RPCMajorVersion(), method, args, reply); err != nil { + c.rpcProxy.NotifyFailedServer(server) + c.logger.Printf("[ERR] client: RPC failed to server %s: %v", server.Addr, err) + return err } - - c.logger.Printf("[INFO] client: setting server address list: %s", setServers) - c.servers = setServers + return nil } // Stats is used to return statistics for debugging and insight @@ -374,10 +360,12 @@ numAllocs := len(c.allocs) c.allocLock.RUnlock() + c.heartbeatLock.Lock() + defer c.heartbeatLock.Unlock() stats := map[string]map[string]string{ "client": map[string]string{ "node_id": c.Node().ID, - "known_servers": toString(uint64(len(c.Servers()))), + "known_servers": toString(uint64(c.rpcProxy.NumServers())), "num_allocations": toString(uint64(numAllocs)), "last_heartbeat": fmt.Sprintf("%v", time.Since(c.lastHeartbeat)), "heartbeat_ttl": fmt.Sprintf("%v", c.heartbeatTTL), @@ -394,8 +382,34 @@ return c.config.Node } +// StatsReporter exposes the various APIs related resource usage of a Nomad +// client +func (c *Client) StatsReporter() ClientStatsReporter { + return c +} + +func (c *Client) GetAllocStats(allocID string) (AllocStatsReporter, error) { + c.allocLock.RLock() + defer c.allocLock.RUnlock() + ar, ok := c.allocs[allocID] + if !ok { + return nil, fmt.Errorf("unknown allocation ID %q", allocID) + } + return ar.StatsReporter(), nil +} + +// HostStats returns all the stats related to a Nomad client +func (c *Client) LatestHostStats() *stats.HostStats { + c.resourceUsageLock.RLock() + defer c.resourceUsageLock.RUnlock() + return c.resourceUsage +} + // GetAllocFS returns the AllocFS interface for the alloc dir of an allocation func (c *Client) GetAllocFS(allocID string) (allocdir.AllocDirFS, error) { + c.allocLock.RLock() + defer c.allocLock.RUnlock() + ar, ok := c.allocs[allocID] if !ok { return nil, fmt.Errorf("alloc not found") @@ -403,6 +417,12 @@ return ar.ctx.AllocDir, nil } +// AddPrimaryServerToRPCProxy adds serverAddr to the RPC Proxy's primary +// server list. +func (c *Client) AddPrimaryServerToRPCProxy(serverAddr string) *rpcproxy.ServerEndpoint { + return c.rpcProxy.AddPrimaryServer(serverAddr) +} + // restoreState is used to restore our state from the data dir func (c *Client) restoreState() error { if c.config.DevMode { @@ -425,7 +445,9 @@ c.configLock.RLock() ar := NewAllocRunner(c.logger, c.configCopy, c.updateAllocStatus, alloc) c.configLock.RUnlock() + c.allocLock.Lock() c.allocs[id] = ar + c.allocLock.Unlock() if err := ar.RestoreState(); err != nil { c.logger.Printf("[ERR] client: failed to restore state for alloc %s: %v", id, err) mErr.Errors = append(mErr.Errors, err) @@ -582,6 +604,7 @@ func (c *Client) fingerprint() error { whitelist := c.config.ReadStringListToMap("fingerprint.whitelist") whitelistEnabled := len(whitelist) > 0 + c.logger.Printf("[DEBUG] client: built-in fingerprints: %v", fingerprint.BuiltinFingerprints) var applied []string var skipped []string @@ -622,7 +645,7 @@ // fingerprintPeriodic runs a fingerprinter at the specified duration. func (c *Client) fingerprintPeriodic(name string, f fingerprint.Fingerprint, d time.Duration) { - c.logger.Printf("[DEBUG] client: periodically fingerprinting %v at duration %v", name, d) + c.logger.Printf("[DEBUG] client: fingerprinting %v every %v", name, d) for { select { case <-time.After(d): @@ -689,7 +712,7 @@ if c.config.DevMode { return devModeRetryIntv } - return base + randomStagger(base) + return base + lib.RandomStagger(base) } // registerAndHeartbeat is a long lived goroutine used to register the client @@ -708,7 +731,7 @@ if c.config.DevMode { heartbeat = time.After(0) } else { - heartbeat = time.After(randomStagger(initialHeartbeatStagger)) + heartbeat = time.After(lib.RandomStagger(initialHeartbeatStagger)) } for { @@ -808,7 +831,7 @@ node := c.Node() req := structs.NodeRegisterRequest{ Node: node, - WriteRequest: structs.WriteRequest{Region: c.config.Region}, + WriteRequest: structs.WriteRequest{Region: c.Region()}, } var resp structs.NodeUpdateResponse err := c.RPC("Node.Register", &req, &resp) @@ -842,7 +865,7 @@ req := structs.NodeUpdateStatusRequest{ NodeID: node.ID, Status: structs.NodeStatusReady, - WriteRequest: structs.WriteRequest{Region: c.config.Region}, + WriteRequest: structs.WriteRequest{Region: c.Region()}, } var resp structs.NodeUpdateResponse err := c.RPC("Node.UpdateStatus", &req, &resp) @@ -861,6 +884,24 @@ defer c.heartbeatLock.Unlock() c.lastHeartbeat = time.Now() c.heartbeatTTL = resp.HeartbeatTTL + + if err := c.rpcProxy.RefreshServerLists(resp.Servers, resp.NumNodes, resp.LeaderRPCAddr); err != nil { + return err + } + + // Begin polling Consul if there is no Nomad leader. We could be + // heartbeating to a Nomad server that is in the minority of a + // partition of the Nomad server quorum, but this Nomad Agent still + // has connectivity to the existing majority of Nomad Servers, but + // only if it queries Consul. + if resp.LeaderRPCAddr == "" { + atomic.CompareAndSwapInt32(&c.lastHeartbeatFromQuorum, 1, 0) + return nil + } + + const heartbeatFallbackFactor = 3 + atomic.CompareAndSwapInt32(&c.lastHeartbeatFromQuorum, 0, 1) + c.consulPullHeartbeatDeadline = time.Now().Add(heartbeatFallbackFactor * resp.HeartbeatTTL) return nil } @@ -907,7 +948,7 @@ // Send to server. args := structs.AllocUpdateRequest{ Alloc: sync, - WriteRequest: structs.WriteRequest{Region: c.config.Region}, + WriteRequest: structs.WriteRequest{Region: c.Region()}, } var resp structs.GenericResponse @@ -947,7 +988,7 @@ req := structs.NodeSpecificRequest{ NodeID: c.Node().ID, QueryOptions: structs.QueryOptions{ - Region: c.config.Region, + Region: c.Region(), AllowStale: true, }, } @@ -957,7 +998,7 @@ // new, or updated server side. allocsReq := structs.AllocsGetRequest{ QueryOptions: structs.QueryOptions{ - Region: c.config.Region, + Region: c.Region(), AllowStale: true, }, } @@ -1170,65 +1211,227 @@ return nil } -// setupConsulClient creates a ConsulService -func (c *Client) setupConsulClient() error { - cfg := consul.ConsulConfig{ - Addr: c.config.ReadDefault("consul.address", "127.0.0.1:8500"), - Token: c.config.Read("consul.token"), - Auth: c.config.Read("consul.auth"), - EnableSSL: c.config.ReadBoolDefault("consul.ssl", false), - VerifySSL: c.config.ReadBoolDefault("consul.verifyssl", true), - } - - cs, err := consul.NewConsulService(&cfg, c.logger, "") - c.consulService = cs - return err -} - -// syncConsul removes services of tasks which are no longer in running state -func (c *Client) syncConsul() { - sync := time.NewTicker(consulSyncInterval) - for { - select { - case <-sync.C: - // Give up pruning services if we can't fingerprint Consul +// setupConsulSyncer creates Client-mode consul.Syncer which periodically +// executes callbacks on a fixed interval. +// +// TODO(sean@): this could eventually be moved to a priority queue and give +// each task an interval, but that is not necessary at this time. +func (c *Client) setupConsulSyncer() error { + // The bootstrapFn callback handler is used to periodically poll + // Consul to look up the Nomad Servers in Consul. In the event the + // heartbeat deadline has been exceeded and this Client is orphaned + // from its servers, periodically poll Consul to reattach this Client + // to its cluster and automatically recover from a detached state. + bootstrapFn := func() error { + now := time.Now() + c.heartbeatLock.Lock() + + // If the last heartbeat didn't contain a leader, give the + // Nomad server this Agent is talking to one more attempt at + // providing a heartbeat that does contain a leader. + if atomic.LoadInt32(&c.lastHeartbeatFromQuorum) == 1 && now.Before(c.consulPullHeartbeatDeadline) { + c.heartbeatLock.Unlock() + return nil + } + c.heartbeatLock.Unlock() - c.configLock.RLock() - _, ok := c.configCopy.Node.Attributes["consul.server"] - c.configLock.RUnlock() - if !ok { + consulCatalog := c.consulSyncer.ConsulClient().Catalog() + dcs, err := consulCatalog.Datacenters() + if err != nil { + return fmt.Errorf("client.consul: unable to query Consul datacenters: %v", err) + } + if len(dcs) > 2 { + // Query the local DC first, then shuffle the + // remaining DCs. Future heartbeats will cause Nomad + // Clients to fixate on their local datacenter so + // it's okay to talk with remote DCs. If the no + // Nomad servers are available within + // datacenterQueryLimit, the next heartbeat will pick + // a new set of servers so it's okay. + shuffleStrings(dcs[1:]) + dcs = dcs[0:lib.MinInt(len(dcs), datacenterQueryLimit)] + } + + // Forward RPCs to our region + nomadRPCArgs := structs.GenericRequest{ + QueryOptions: structs.QueryOptions{ + Region: c.Region(), + }, + } + + nomadServerServiceName := c.config.ConsulConfig.ServerServiceName + var mErr multierror.Error + const defaultMaxNumNomadServers = 8 + nomadServerServices := make([]string, 0, defaultMaxNumNomadServers) + c.logger.Printf("[DEBUG] client.consul: bootstrap contacting following Consul DCs: %+q", dcs) + for _, dc := range dcs { + consulOpts := &consulapi.QueryOptions{ + AllowStale: true, + Datacenter: dc, + Near: "_agent", + WaitTime: consul.DefaultQueryWaitDuration, + } + consulServices, _, err := consulCatalog.Service(nomadServerServiceName, consul.ServiceTagRPC, consulOpts) + if err != nil { + mErr.Errors = append(mErr.Errors, fmt.Errorf("unable to query service %+q from Consul datacenter %+q: %v", nomadServerServiceName, dc, err)) continue } - services := make(map[string]struct{}) - // Get the existing allocs - c.allocLock.RLock() - allocs := make([]*AllocRunner, 0, len(c.allocs)) - for _, ar := range c.allocs { - allocs = append(allocs, ar) - } - c.allocLock.RUnlock() - for _, ar := range allocs { - ar.taskStatusLock.RLock() - taskStates := copyTaskStates(ar.taskStates) - ar.taskStatusLock.RUnlock() - for taskName, taskState := range taskStates { - if taskState.State == structs.TaskStateRunning { - if tr, ok := ar.tasks[taskName]; ok { - for _, service := range tr.task.Services { - services[service.ID(ar.alloc.ID, tr.task.Name)] = struct{}{} - } - } - } + + for _, s := range consulServices { + port := strconv.FormatInt(int64(s.ServicePort), 10) + addr := s.ServiceAddress + if addr == "" { + addr = s.Address + } + serverAddr := net.JoinHostPort(addr, port) + serverEndpoint, err := rpcproxy.NewServerEndpoint(serverAddr) + if err != nil { + mErr.Errors = append(mErr.Errors, err) + continue + } + var peers []string + if err := c.connPool.RPC(c.Region(), serverEndpoint.Addr, c.RPCMajorVersion(), "Status.Peers", nomadRPCArgs, &peers); err != nil { + mErr.Errors = append(mErr.Errors, err) + continue + } + // Successfully received the Server peers list of the correct + // region + if len(peers) != 0 { + nomadServerServices = append(nomadServerServices, peers...) + break + } + } + // Break if at least one Nomad Server was successfully pinged + if len(nomadServerServices) > 0 { + break + } + } + if len(nomadServerServices) == 0 { + if len(mErr.Errors) > 0 { + return mErr.ErrorOrNil() + } + + return fmt.Errorf("no Nomad Servers advertising service %q in Consul datacenters: %q", nomadServerServiceName, dcs) + } + + // Log the servers we are adding + c.logger.Printf("[DEBUG] client.consul: bootstrap adding following Servers: %q", nomadServerServices) + + c.heartbeatLock.Lock() + if atomic.LoadInt32(&c.lastHeartbeatFromQuorum) == 1 && now.Before(c.consulPullHeartbeatDeadline) { + c.heartbeatLock.Unlock() + // Common, healthy path + if err := c.rpcProxy.SetBackupServers(nomadServerServices); err != nil { + return fmt.Errorf("client.consul: unable to set backup servers: %v", err) + } + } else { + c.heartbeatLock.Unlock() + // If this Client is talking with a Server that + // doesn't have a leader, and we have exceeded the + // consulPullHeartbeatDeadline, change the call from + // SetBackupServers() to calling AddPrimaryServer() + // in order to allow the Clients to randomly begin + // considering all known Nomad servers and + // eventually, hopefully, find their way to a Nomad + // Server that has quorum (assuming Consul has a + // server list that is in the majority). + for _, s := range nomadServerServices { + c.rpcProxy.AddPrimaryServer(s) + } + } + + return nil + } + if c.config.ConsulConfig.ClientAutoJoin { + c.consulSyncer.AddPeriodicHandler("Nomad Client Fallback Server Handler", bootstrapFn) + } + + consulServicesReaperFn := func() error { + const estInitialExecutorDomains = 8 + + // Create the domains to keep and add the server and client + domains := make([]consul.ServiceDomain, 2, estInitialExecutorDomains) + domains[0] = consul.ServerDomain + domains[1] = consul.ClientDomain + + for allocID, ar := range c.getAllocRunners() { + ar.taskStatusLock.RLock() + taskStates := copyTaskStates(ar.taskStates) + ar.taskStatusLock.RUnlock() + for taskName, taskState := range taskStates { + // Only keep running tasks + if taskState.State == structs.TaskStateRunning { + d := consul.NewExecutorDomain(allocID, taskName) + domains = append(domains, d) } } - if err := c.consulService.KeepServices(services); err != nil { - c.logger.Printf("[DEBUG] client: error removing services from non-running tasks: %v", err) + } + + return c.consulSyncer.ReapUnmatched(domains) + } + if c.config.ConsulConfig.AutoAdvertise { + c.consulSyncer.AddPeriodicHandler("Nomad Client Services Sync Handler", consulServicesReaperFn) + } + + return nil +} + +// collectHostStats collects host resource usage stats periodically +func (c *Client) collectHostStats() { + // Start collecting host stats right away and then keep collecting every + // collection interval + next := time.NewTimer(0) + defer next.Stop() + for { + select { + case <-next.C: + ru, err := c.hostStatsCollector.Collect() + next.Reset(c.config.StatsCollectionInterval) + if err != nil { + c.logger.Printf("[WARN] client: error fetching host resource usage stats: %v", err) + continue } + + c.resourceUsageLock.Lock() + c.resourceUsage = ru + c.resourceUsageLock.Unlock() + c.emitStats(ru) case <-c.shutdownCh: - sync.Stop() - c.logger.Printf("[INFO] client: shutting down consul sync") return } + } +} +// emitStats pushes host resource usage stats to remote metrics collection sinks +func (c *Client) emitStats(hStats *stats.HostStats) { + nodeID, err := c.nodeID() + if err != nil { + return } + metrics.SetGauge([]string{"client", "host", "memory", nodeID, "total"}, float32(hStats.Memory.Total)) + metrics.SetGauge([]string{"client", "host", "memory", nodeID, "available"}, float32(hStats.Memory.Available)) + metrics.SetGauge([]string{"client", "host", "memory", nodeID, "used"}, float32(hStats.Memory.Used)) + metrics.SetGauge([]string{"client", "host", "memory", nodeID, "free"}, float32(hStats.Memory.Free)) + + metrics.SetGauge([]string{"uptime"}, float32(hStats.Uptime)) + + for _, cpu := range hStats.CPU { + metrics.SetGauge([]string{"client", "host", "cpu", nodeID, cpu.CPU, "total"}, float32(cpu.Total)) + metrics.SetGauge([]string{"client", "host", "cpu", nodeID, cpu.CPU, "user"}, float32(cpu.User)) + metrics.SetGauge([]string{"client", "host", "cpu", nodeID, cpu.CPU, "idle"}, float32(cpu.Idle)) + metrics.SetGauge([]string{"client", "host", "cpu", nodeID, cpu.CPU, "system"}, float32(cpu.System)) + } + + for _, disk := range hStats.DiskStats { + metrics.SetGauge([]string{"client", "host", "disk", nodeID, disk.Device, "size"}, float32(disk.Size)) + metrics.SetGauge([]string{"client", "host", "disk", nodeID, disk.Device, "used"}, float32(disk.Used)) + metrics.SetGauge([]string{"client", "host", "disk", nodeID, disk.Device, "available"}, float32(disk.Available)) + metrics.SetGauge([]string{"client", "host", "disk", nodeID, disk.Device, "used_percent"}, float32(disk.UsedPercent)) + metrics.SetGauge([]string{"client", "host", "disk", nodeID, disk.Device, "inodes_percent"}, float32(disk.InodesUsedPercent)) + } +} + +// RPCProxy returns the Client's RPCProxy instance +func (c *Client) RPCProxy() *rpcproxy.RPCProxy { + return c.rpcProxy } diff -Nru nomad-0.3.2+dfsg/client/client_test.go nomad-0.4.0+dfsg/client/client_test.go --- nomad-0.3.2+dfsg/client/client_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/client_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,12 +7,12 @@ "net" "os" "path/filepath" - "reflect" "sync/atomic" "testing" "time" "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/command/agent/consul" "github.com/hashicorp/nomad/nomad" "github.com/hashicorp/nomad/nomad/mock" "github.com/hashicorp/nomad/nomad/structs" @@ -60,8 +60,15 @@ cb(config) } + shutdownCh := make(chan struct{}) + logger := log.New(config.LogOutput, "", log.LstdFlags) + consulSyncer, err := consul.NewSyncer(config.ConsulConfig, shutdownCh, logger) + if err != nil { + t.Fatalf("err: %v", err) + } + // Create server - server, err := nomad.NewServer(config) + server, err := nomad.NewServer(config, consulSyncer, logger) if err != nil { t.Fatalf("err: %v", err) } @@ -69,13 +76,20 @@ } func testClient(t *testing.T, cb func(c *config.Config)) *Client { - conf := DefaultConfig() + conf := config.DefaultConfig() conf.DevMode = true if cb != nil { cb(conf) } - client, err := NewClient(conf) + shutdownCh := make(chan struct{}) + consulSyncer, err := consul.NewSyncer(conf.ConsulConfig, shutdownCh, log.New(os.Stderr, "", log.LstdFlags)) + if err != nil { + t.Fatalf("err: %v", err) + } + + logger := log.New(conf.LogOutput, "", log.LstdFlags) + client, err := NewClient(conf, consulSyncer, logger) if err != nil { t.Fatalf("err: %v", err) } @@ -462,7 +476,14 @@ } // Create a new client - c2, err := NewClient(c1.config) + shutdownCh := make(chan struct{}) + logger := log.New(c1.config.LogOutput, "", log.LstdFlags) + consulSyncer, err := consul.NewSyncer(c1.config.ConsulConfig, shutdownCh, logger) + if err != nil { + t.Fatalf("err: %v", err) + } + + c2, err := NewClient(c1.config, consulSyncer, logger) if err != nil { t.Fatalf("err: %v", err) } @@ -507,54 +528,3 @@ t.Fatalf("err: %s", err) } } - -func TestClient_SetServers(t *testing.T) { - client := testClient(t, nil) - - // Sets an empty list - client.SetServers(nil) - if client.servers == nil { - t.Fatalf("should not be nil") - } - - // Set the initial servers list - expect := []string{"foo:4647"} - client.SetServers(expect) - if !reflect.DeepEqual(client.servers, expect) { - t.Fatalf("expect %v, got %v", expect, client.servers) - } - - // Add a server - expect = []string{"foo:5445", "bar:8080"} - client.SetServers(expect) - if !reflect.DeepEqual(client.servers, expect) { - t.Fatalf("expect %v, got %v", expect, client.servers) - } - - // Remove a server - expect = []string{"bar:8080"} - client.SetServers(expect) - if !reflect.DeepEqual(client.servers, expect) { - t.Fatalf("expect %v, got %v", expect, client.servers) - } - - // Add and remove a server - expect = []string{"baz:9090", "zip:4545"} - client.SetServers(expect) - if !reflect.DeepEqual(client.servers, expect) { - t.Fatalf("expect %v, got %v", expect, client.servers) - } - - // Query the servers list - if servers := client.Servers(); !reflect.DeepEqual(servers, expect) { - t.Fatalf("expect %v, got %v", expect, servers) - } - - // Add servers without ports, and remove old servers - servers := []string{"foo", "bar", "baz"} - expect = []string{"foo:4647", "bar:4647", "baz:4647"} - client.SetServers(servers) - if !reflect.DeepEqual(client.servers, expect) { - t.Fatalf("expect %v, got %v", expect, client.servers) - } -} diff -Nru nomad-0.3.2+dfsg/client/config/config.go nomad-0.4.0+dfsg/client/config/config.go --- nomad-0.3.2+dfsg/client/config/config.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/config/config.go 2016-06-28 21:26:34.000000000 +0000 @@ -3,11 +3,13 @@ import ( "fmt" "io" + "os" "strconv" "strings" "time" "github.com/hashicorp/nomad/nomad/structs" + "github.com/hashicorp/nomad/nomad/structs/config" ) var ( @@ -108,6 +110,13 @@ // Revision is the commit number of the Nomad client Revision string + + // ConsulConfig is this Agent's Consul configuration + ConsulConfig *config.ConsulConfig + + // StatsCollectionInterval is the interval at which the Nomad client + // collects resource usage stats + StatsCollectionInterval time.Duration } func (c *Config) Copy() *Config { @@ -119,6 +128,16 @@ return nc } +// DefaultConfig returns the default configuration +func DefaultConfig() *Config { + return &Config{ + ConsulConfig: config.DefaultConsulConfig(), + LogOutput: os.Stderr, + Region: "global", + StatsCollectionInterval: 1 * time.Second, + } +} + // Read returns the specified configuration value or "". func (c *Config) Read(id string) string { return c.Options[id] @@ -157,7 +176,7 @@ return val } -// ReadStringListToMap tries to parse the specified option as a comma seperated list. +// ReadStringListToMap tries to parse the specified option as a comma separated list. // If there is an error in parsing, an empty list is returned. func (c *Config) ReadStringListToMap(key string) map[string]struct{} { s := strings.TrimSpace(c.Read(key)) @@ -171,7 +190,7 @@ return list } -// ReadStringListToMap tries to parse the specified option as a comma seperated list. +// ReadStringListToMap tries to parse the specified option as a comma separated list. // If there is an error in parsing, an empty list is returned. func (c *Config) ReadStringListToMapDefault(key, defaultValue string) map[string]struct{} { val, ok := c.Options[key] diff -Nru nomad-0.3.2+dfsg/client/consul/check.go nomad-0.4.0+dfsg/client/consul/check.go --- nomad-0.3.2+dfsg/client/consul/check.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/consul/check.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,88 +0,0 @@ -package consul - -import ( - "log" - "math/rand" - "sync" - "time" - - cstructs "github.com/hashicorp/nomad/client/driver/structs" -) - -// CheckRunner runs a given check in a specific interval and update a -// corresponding Consul TTL check -type CheckRunner struct { - check Check - runCheck func(Check) - logger *log.Logger - stop bool - stopCh chan struct{} - stopLock sync.Mutex - - started bool - startedLock sync.Mutex -} - -// NewCheckRunner configures and returns a CheckRunner -func NewCheckRunner(check Check, runCheck func(Check), logger *log.Logger) *CheckRunner { - cr := CheckRunner{ - check: check, - runCheck: runCheck, - logger: logger, - stopCh: make(chan struct{}), - } - return &cr -} - -// Start is used to start the check. The check runs until stop is called -func (r *CheckRunner) Start() { - r.startedLock.Lock() - defer r.startedLock.Unlock() - if r.started { - return - } - r.stopLock.Lock() - defer r.stopLock.Unlock() - go r.run() - r.started = true -} - -// Stop is used to stop the check. -func (r *CheckRunner) Stop() { - r.stopLock.Lock() - defer r.stopLock.Unlock() - if !r.stop { - r.stop = true - close(r.stopCh) - } -} - -// run is invoked by a goroutine to run until Stop() is called -func (r *CheckRunner) run() { - // Get the randomized initial pause time - initialPauseTime := randomStagger(r.check.Interval()) - r.logger.Printf("[DEBUG] agent: pausing %v before first invocation of %s", initialPauseTime, r.check.ID()) - next := time.NewTimer(initialPauseTime) - for { - select { - case <-next.C: - r.runCheck(r.check) - next.Reset(r.check.Interval()) - case <-r.stopCh: - next.Stop() - return - } - } -} - -// Check is an interface which check providers can implement for Nomad to run -type Check interface { - Run() *cstructs.CheckResult - ID() string - Interval() time.Duration -} - -// Returns a random stagger interval between 0 and the duration -func randomStagger(intv time.Duration) time.Duration { - return time.Duration(uint64(rand.Int63()) % uint64(intv)) -} diff -Nru nomad-0.3.2+dfsg/client/consul/sync.go nomad-0.4.0+dfsg/client/consul/sync.go --- nomad-0.3.2+dfsg/client/consul/sync.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/consul/sync.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,454 +0,0 @@ -package consul - -import ( - "crypto/tls" - "fmt" - "log" - "net/http" - "net/url" - "reflect" - "strings" - "sync" - "time" - - consul "github.com/hashicorp/consul/api" - "github.com/hashicorp/go-multierror" - - "github.com/hashicorp/nomad/nomad/structs" -) - -// ConsulService allows syncing of services and checks with Consul -type ConsulService struct { - client *consul.Client - availble bool - - task *structs.Task - allocID string - delegateChecks map[string]struct{} - createCheck func(*structs.ServiceCheck, string) (Check, error) - - trackedServices map[string]*consul.AgentService - trackedChecks map[string]*consul.AgentCheckRegistration - checkRunners map[string]*CheckRunner - - logger *log.Logger - - shutdownCh chan struct{} - shutdown bool - shutdownLock sync.Mutex -} - -// ConsulConfig is the configuration used to create a new ConsulService client -type ConsulConfig struct { - Addr string - Token string - Auth string - EnableSSL bool - VerifySSL bool - CAFile string - CertFile string - KeyFile string -} - -const ( - // The periodic time interval for syncing services and checks with Consul - syncInterval = 5 * time.Second - - // ttlCheckBuffer is the time interval that Nomad can take to report Consul - // the check result - ttlCheckBuffer = 31 * time.Second -) - -// NewConsulService returns a new ConsulService -func NewConsulService(config *ConsulConfig, logger *log.Logger, allocID string) (*ConsulService, error) { - var err error - var c *consul.Client - cfg := consul.DefaultConfig() - if config.Addr != "" { - cfg.Address = config.Addr - } - if config.Token != "" { - cfg.Token = config.Token - } - if config.Auth != "" { - var username, password string - if strings.Contains(config.Auth, ":") { - split := strings.SplitN(config.Auth, ":", 2) - username = split[0] - password = split[1] - } else { - username = config.Auth - } - - cfg.HttpAuth = &consul.HttpBasicAuth{ - Username: username, - Password: password, - } - } - if config.EnableSSL { - cfg.Scheme = "https" - tlsCfg := consul.TLSConfig{ - Address: cfg.Address, - CAFile: config.CAFile, - CertFile: config.CertFile, - KeyFile: config.KeyFile, - InsecureSkipVerify: !config.VerifySSL, - } - tlsClientCfg, err := consul.SetupTLSConfig(&tlsCfg) - if err != nil { - return nil, fmt.Errorf("error creating tls client config for consul: %v", err) - } - cfg.HttpClient.Transport = &http.Transport{ - TLSClientConfig: tlsClientCfg, - } - } - if config.EnableSSL && !config.VerifySSL { - cfg.HttpClient.Transport = &http.Transport{ - TLSClientConfig: &tls.Config{ - InsecureSkipVerify: true, - }, - } - } - if c, err = consul.NewClient(cfg); err != nil { - return nil, err - } - consulService := ConsulService{ - client: c, - allocID: allocID, - logger: logger, - trackedServices: make(map[string]*consul.AgentService), - trackedChecks: make(map[string]*consul.AgentCheckRegistration), - checkRunners: make(map[string]*CheckRunner), - - shutdownCh: make(chan struct{}), - } - return &consulService, nil -} - -// SetDelegatedChecks sets the checks that nomad is going to run and report the -// result back to consul -func (c *ConsulService) SetDelegatedChecks(delegateChecks map[string]struct{}, createCheck func(*structs.ServiceCheck, string) (Check, error)) *ConsulService { - c.delegateChecks = delegateChecks - c.createCheck = createCheck - return c -} - -// SyncTask sync the services and task with consul -func (c *ConsulService) SyncTask(task *structs.Task) error { - var mErr multierror.Error - c.task = task - taskServices := make(map[string]*consul.AgentService) - taskChecks := make(map[string]*consul.AgentCheckRegistration) - - // Register Services and Checks that we don't know about or has changed - for _, service := range task.Services { - srv, err := c.createService(service) - if err != nil { - mErr.Errors = append(mErr.Errors, err) - continue - } - trackedService, ok := c.trackedServices[srv.ID] - if (ok && !reflect.DeepEqual(trackedService, srv)) || !ok { - if err := c.registerService(srv); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - c.trackedServices[srv.ID] = srv - taskServices[srv.ID] = srv - - for _, chk := range service.Checks { - // Create a consul check registration - chkReg, err := c.createCheckReg(chk, srv) - if err != nil { - mErr.Errors = append(mErr.Errors, err) - continue - } - // creating a nomad check if we have to handle this particular check type - if _, ok := c.delegateChecks[chk.Type]; ok { - nc, err := c.createCheck(chk, chkReg.ID) - if err != nil { - mErr.Errors = append(mErr.Errors, err) - continue - } - cr := NewCheckRunner(nc, c.runCheck, c.logger) - c.checkRunners[nc.ID()] = cr - } - - if _, ok := c.trackedChecks[chkReg.ID]; !ok { - if err := c.registerCheck(chkReg); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - c.trackedChecks[chkReg.ID] = chkReg - taskChecks[chkReg.ID] = chkReg - } - } - - // Remove services that are not present anymore - for _, service := range c.trackedServices { - if _, ok := taskServices[service.ID]; !ok { - if err := c.deregisterService(service.ID); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - delete(c.trackedServices, service.ID) - } - } - - // Remove the checks that are not present anymore - for checkID, _ := range c.trackedChecks { - if _, ok := taskChecks[checkID]; !ok { - if err := c.deregisterCheck(checkID); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - delete(c.trackedChecks, checkID) - } - } - return mErr.ErrorOrNil() -} - -// Shutdown de-registers the services and checks and shuts down periodic syncing -func (c *ConsulService) Shutdown() error { - var mErr multierror.Error - - c.shutdownLock.Lock() - if !c.shutdown { - close(c.shutdownCh) - c.shutdown = true - } - c.shutdownLock.Unlock() - - // Stop all the checks that nomad is running - for _, cr := range c.checkRunners { - cr.Stop() - } - - // De-register all the services from consul - for _, service := range c.trackedServices { - if err := c.client.Agent().ServiceDeregister(service.ID); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - return mErr.ErrorOrNil() -} - -// KeepServices removes services from consul which are not present in the list -// of tasks passed to it -func (c *ConsulService) KeepServices(services map[string]struct{}) error { - var mErr multierror.Error - - // Get the services from Consul - cServices, err := c.client.Agent().Services() - if err != nil { - return err - } - cServices = c.filterConsulServices(cServices) - - // Remove the services from consul which are not in any of the tasks - for _, service := range cServices { - if _, validService := services[service.ID]; !validService { - if err := c.deregisterService(service.ID); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - } - return mErr.ErrorOrNil() -} - -// registerCheck registers a check definition with Consul -func (c *ConsulService) registerCheck(chkReg *consul.AgentCheckRegistration) error { - if cr, ok := c.checkRunners[chkReg.ID]; ok { - cr.Start() - } - return c.client.Agent().CheckRegister(chkReg) -} - -// createCheckReg creates a Check that can be registered with Nomad. It also -// creates a Nomad check for the check types that it can handle. -func (c *ConsulService) createCheckReg(check *structs.ServiceCheck, service *consul.AgentService) (*consul.AgentCheckRegistration, error) { - chkReg := consul.AgentCheckRegistration{ - ID: check.Hash(service.ID), - Name: check.Name, - ServiceID: service.ID, - } - chkReg.Timeout = check.Timeout.String() - chkReg.Interval = check.Interval.String() - switch check.Type { - case structs.ServiceCheckHTTP: - if check.Protocol == "" { - check.Protocol = "http" - } - url := url.URL{ - Scheme: check.Protocol, - Host: fmt.Sprintf("%s:%d", service.Address, service.Port), - Path: check.Path, - } - chkReg.HTTP = url.String() - case structs.ServiceCheckTCP: - chkReg.TCP = fmt.Sprintf("%s:%d", service.Address, service.Port) - case structs.ServiceCheckScript: - chkReg.TTL = (check.Interval + ttlCheckBuffer).String() - default: - return nil, fmt.Errorf("check type %q not valid", check.Type) - } - return &chkReg, nil -} - -// createService creates a Consul AgentService from a Nomad Service -func (c *ConsulService) createService(service *structs.Service) (*consul.AgentService, error) { - srv := consul.AgentService{ - ID: service.ID(c.allocID, c.task.Name), - Service: service.Name, - Tags: service.Tags, - } - host, port := c.task.FindHostAndPortFor(service.PortLabel) - if host != "" { - srv.Address = host - } - - if port != 0 { - srv.Port = port - } - - return &srv, nil -} - -// registerService registers a service with Consul -func (c *ConsulService) registerService(service *consul.AgentService) error { - srvReg := consul.AgentServiceRegistration{ - ID: service.ID, - Name: service.Service, - Tags: service.Tags, - Port: service.Port, - Address: service.Address, - } - return c.client.Agent().ServiceRegister(&srvReg) -} - -// deregisterService de-registers a service with the given ID from consul -func (c *ConsulService) deregisterService(ID string) error { - return c.client.Agent().ServiceDeregister(ID) -} - -// deregisterCheck de-registers a check with a given ID from Consul. -func (c *ConsulService) deregisterCheck(ID string) error { - // Deleting the nomad check - if cr, ok := c.checkRunners[ID]; ok { - cr.Stop() - delete(c.checkRunners, ID) - } - - // Deleting from consul - return c.client.Agent().CheckDeregister(ID) -} - -// PeriodicSync triggers periodic syncing of services and checks with Consul. -// This is a long lived go-routine which is stopped during shutdown -func (c *ConsulService) PeriodicSync() { - sync := time.NewTicker(syncInterval) - for { - select { - case <-sync.C: - if err := c.performSync(); err != nil { - if c.availble { - c.logger.Printf("[DEBUG] consul: error in syncing task %q: %v", c.task.Name, err) - } - c.availble = false - } else { - c.availble = true - } - case <-c.shutdownCh: - sync.Stop() - c.logger.Printf("[INFO] consul: shutting down sync for task %q", c.task.Name) - return - } - } -} - -// performSync sync the services and checks we are tracking with Consul. -func (c *ConsulService) performSync() error { - var mErr multierror.Error - cServices, err := c.client.Agent().Services() - if err != nil { - return err - } - - cChecks, err := c.client.Agent().Checks() - if err != nil { - return err - } - - // Add services and checks that consul doesn't have but we do - for serviceID, service := range c.trackedServices { - if _, ok := cServices[serviceID]; !ok { - if err := c.registerService(service); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - } - for checkID, check := range c.trackedChecks { - if _, ok := cChecks[checkID]; !ok { - if err := c.registerCheck(check); err != nil { - mErr.Errors = append(mErr.Errors, err) - } - } - } - - return mErr.ErrorOrNil() -} - -// filterConsulServices prunes out all the service whose ids are not prefixed -// with nomad- -func (c *ConsulService) filterConsulServices(srvcs map[string]*consul.AgentService) map[string]*consul.AgentService { - nomadServices := make(map[string]*consul.AgentService) - for _, srv := range srvcs { - if strings.HasPrefix(srv.ID, structs.NomadConsulPrefix) { - nomadServices[srv.ID] = srv - } - } - return nomadServices -} - -// filterConsulChecks prunes out all the consul checks which do not have -// services with id prefixed with noamd- -func (c *ConsulService) filterConsulChecks(chks map[string]*consul.AgentCheck) map[string]*consul.AgentCheck { - nomadChecks := make(map[string]*consul.AgentCheck) - for _, chk := range chks { - if strings.HasPrefix(chk.ServiceID, structs.NomadConsulPrefix) { - nomadChecks[chk.CheckID] = chk - } - } - return nomadChecks -} - -// consulPresent indicates whether the consul agent is responding -func (c *ConsulService) consulPresent() bool { - _, err := c.client.Agent().Self() - return err == nil -} - -// runCheck runs a check and updates the corresponding ttl check in consul -func (c *ConsulService) runCheck(check Check) { - res := check.Run() - state := consul.HealthCritical - output := res.Output - switch res.ExitCode { - case 0: - state = consul.HealthPassing - case 1: - state = consul.HealthWarning - default: - state = consul.HealthCritical - } - if res.Err != nil { - state = consul.HealthCritical - output = res.Err.Error() - } - if err := c.client.Agent().UpdateTTL(check.ID(), output, state); err != nil { - if c.availble { - c.logger.Printf("[DEBUG] error updating ttl check for check %q: %v", check.ID(), err) - c.availble = false - } else { - c.availble = true - } - } -} diff -Nru nomad-0.3.2+dfsg/client/consul/sync_test.go nomad-0.4.0+dfsg/client/consul/sync_test.go --- nomad-0.3.2+dfsg/client/consul/sync_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/consul/sync_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,162 +0,0 @@ -package consul - -import ( - "fmt" - "log" - "os" - "reflect" - "testing" - "time" - - "github.com/hashicorp/go-multierror" - "github.com/hashicorp/nomad/nomad/structs" -) - -var ( - logger = log.New(os.Stdout, "", log.LstdFlags) - check1 = structs.ServiceCheck{ - Name: "check-foo-1", - Type: structs.ServiceCheckTCP, - Interval: 30 * time.Second, - Timeout: 5 * time.Second, - } - service1 = structs.Service{ - Name: "foo-1", - Tags: []string{"tag1", "tag2"}, - PortLabel: "port1", - Checks: []*structs.ServiceCheck{ - &check1, - }, - } - - service2 = structs.Service{ - Name: "foo-2", - Tags: []string{"tag1", "tag2"}, - PortLabel: "port2", - } -) - -func TestConsulServiceRegisterServices(t *testing.T) { - allocID := "12" - cs, err := NewConsulService(&ConsulConfig{}, logger, allocID) - if err != nil { - t.Fatalf("Err: %v", err) - } - // Skipping the test if consul isn't present - if !cs.consulPresent() { - return - } - task := mockTask() - if err := cs.SyncTask(task); err != nil { - t.Fatalf("err: %v", err) - } - defer cs.Shutdown() - - service1ID := service1.ID(allocID, task.Name) - service2ID := service2.ID(allocID, task.Name) - if err := servicesPresent(t, []string{service1ID, service2ID}, cs); err != nil { - t.Fatalf("err : %v", err) - } - if err := checksPresent(t, []string{check1.Hash(service1ID)}, cs); err != nil { - t.Fatalf("err : %v", err) - } -} - -func TestConsulServiceUpdateService(t *testing.T) { - allocID := "12" - cs, err := NewConsulService(&ConsulConfig{}, logger, allocID) - if err != nil { - t.Fatalf("Err: %v", err) - } - // Skipping the test if consul isn't present - if !cs.consulPresent() { - return - } - - task := mockTask() - if err := cs.SyncTask(task); err != nil { - t.Fatalf("err: %v", err) - } - defer cs.Shutdown() - - //Update Service defn 1 - newTags := []string{"tag3"} - task.Services[0].Tags = newTags - if err := cs.SyncTask(task); err != nil { - t.Fatalf("err: %v", err) - } - // Make sure all the services and checks are still present - service1ID := service1.ID(allocID, task.Name) - service2ID := service2.ID(allocID, task.Name) - if err := servicesPresent(t, []string{service1ID, service2ID}, cs); err != nil { - t.Fatalf("err : %v", err) - } - if err := checksPresent(t, []string{check1.Hash(service1ID)}, cs); err != nil { - t.Fatalf("err : %v", err) - } - - // check if service defn 1 has been updated - services, err := cs.client.Agent().Services() - if err != nil { - t.Fatalf("errL: %v", err) - } - srv, _ := services[service1ID] - if !reflect.DeepEqual(srv.Tags, newTags) { - t.Fatalf("expected tags: %v, actual: %v", newTags, srv.Tags) - } -} - -func servicesPresent(t *testing.T, serviceIDs []string, consulService *ConsulService) error { - var mErr multierror.Error - services, err := consulService.client.Agent().Services() - if err != nil { - t.Fatalf("err: %v", err) - } - - for _, serviceID := range serviceIDs { - if _, ok := services[serviceID]; !ok { - mErr.Errors = append(mErr.Errors, fmt.Errorf("service ID %q not synced", serviceID)) - } - } - return mErr.ErrorOrNil() -} - -func checksPresent(t *testing.T, checkIDs []string, consulService *ConsulService) error { - var mErr multierror.Error - checks, err := consulService.client.Agent().Checks() - if err != nil { - t.Fatalf("err: %v", err) - } - - for _, checkID := range checkIDs { - if _, ok := checks[checkID]; !ok { - mErr.Errors = append(mErr.Errors, fmt.Errorf("check ID %q not synced", checkID)) - } - } - return mErr.ErrorOrNil() -} - -func mockTask() *structs.Task { - task := structs.Task{ - Name: "foo", - Services: []*structs.Service{&service1, &service2}, - Resources: &structs.Resources{ - Networks: []*structs.NetworkResource{ - &structs.NetworkResource{ - IP: "10.10.11.5", - DynamicPorts: []structs.Port{ - structs.Port{ - Label: "port1", - Value: 20002, - }, - structs.Port{ - Label: "port2", - Value: 20003, - }, - }, - }, - }, - }, - } - return &task -} diff -Nru nomad-0.3.2+dfsg/client/driver/docker.go nomad-0.4.0+dfsg/client/driver/docker.go --- nomad-0.3.2+dfsg/client/driver/docker.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/docker.go 2016-06-28 21:26:34.000000000 +0000 @@ -9,6 +9,7 @@ "os/exec" "path/filepath" "regexp" + "runtime" "strconv" "strings" "sync" @@ -21,17 +22,31 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" + shelpers "github.com/hashicorp/nomad/helper/stats" "github.com/hashicorp/nomad/nomad/structs" "github.com/mitchellh/mapstructure" ) var ( - // We store the client globally to cache the connection to the docker daemon. - createClient sync.Once - client *docker.Client + // We store the clients globally to cache the connection to the docker daemon. + createClients sync.Once + + // client is a docker client with a timeout of 1 minute. This is for doing + // all operations with the docker daemon besides which are not long running + // such as creating, killing containers, etc. + client *docker.Client + + // waitClient is a docker client with no timeouts. This is used for long + // running operations such as waiting on containers and collect stats + waitClient *docker.Client + + // The statistics the Docker driver exposes + DockerMeasuredMemStats = []string{"RSS", "Cache", "Swap", "Max Usage"} + DockerMeasuredCpuStats = []string{"Throttled Periods", "Throttled Time", "Percent"} ) const ( @@ -70,7 +85,7 @@ UTSMode string `mapstructure:"uts_mode"` // The UTS mode of the container - host and none PortMapRaw []map[string]int `mapstructure:"port_map"` // PortMap map[string]int `mapstructure:"-"` // A map of host port labels and the ports exposed on the container - Privileged bool `mapstructure:"privileged"` // Flag to run the container in priviledged mode + Privileged bool `mapstructure:"privileged"` // Flag to run the container in privileged mode DNSServers []string `mapstructure:"dns_servers"` // DNS Server for containers DNSSearchDomains []string `mapstructure:"dns_search_domains"` // DNS Search domains for containers Hostname string `mapstructure:"hostname"` // Hostname for containers @@ -80,17 +95,10 @@ SSL bool `mapstructure:"ssl"` // Flag indicating repository is served via https TTY bool `mapstructure:"tty"` // Allocate a Pseudo-TTY Interactive bool `mapstructure:"interactive"` // Keep STDIN open even if not attached + ShmSize int64 `mapstructure:"shm_size"` // Size of /dev/shm of the container in bytes } -func (c *DockerDriverConfig) Init() error { - if strings.Contains(c.ImageName, "https://") { - c.SSL = true - c.ImageName = strings.Replace(c.ImageName, "https://", "", 1) - } - - return nil -} - +// Validate validates a docker driver config func (c *DockerDriverConfig) Validate() error { if c.ImageName == "" { return fmt.Errorf("Docker Driver needs an image name") @@ -102,6 +110,24 @@ return nil } +// NewDockerDriverConfig returns a docker driver config by parsing the HCL +// config +func NewDockerDriverConfig(task *structs.Task) (*DockerDriverConfig, error) { + var driverConfig DockerDriverConfig + driverConfig.SSL = true + if err := mapstructure.WeakDecode(task.Config, &driverConfig); err != nil { + return nil, err + } + if strings.Contains(driverConfig.ImageName, "https://") { + driverConfig.ImageName = strings.Replace(driverConfig.ImageName, "https://", "", 1) + } + + if err := driverConfig.Validate(); err != nil { + return nil, err + } + return &driverConfig, nil +} + type dockerPID struct { Version string ImageID string @@ -112,18 +138,22 @@ } type DockerHandle struct { - pluginClient *plugin.Client - executor executor.Executor - client *docker.Client - logger *log.Logger - cleanupImage bool - imageID string - containerID string - version string - killTimeout time.Duration - maxKillTimeout time.Duration - waitCh chan *cstructs.WaitResult - doneCh chan struct{} + pluginClient *plugin.Client + executor executor.Executor + client *docker.Client + waitClient *docker.Client + logger *log.Logger + cleanupImage bool + imageID string + containerID string + version string + clkSpeed float64 + killTimeout time.Duration + maxKillTimeout time.Duration + resourceUsageLock sync.RWMutex + resourceUsage *cstructs.TaskResourceUsage + waitCh chan *dstructs.WaitResult + doneCh chan bool } func NewDockerDriver(ctx *DriverContext) Driver { @@ -176,7 +206,7 @@ Type: fields.TypeString, }, "labels": &fields.FieldSchema{ - Type: fields.TypeMap, + Type: fields.TypeArray, }, "auth": &fields.FieldSchema{ Type: fields.TypeArray, @@ -190,6 +220,9 @@ "interactive": &fields.FieldSchema{ Type: fields.TypeBool, }, + "shm_size": &fields.FieldSchema{ + Type: fields.TypeInt, + }, }, } @@ -200,16 +233,23 @@ return nil } -// dockerClient creates *docker.Client. In test / dev mode we can use ENV vars -// to connect to the docker daemon. In production mode we will read -// docker.endpoint from the config file. -func (d *DockerDriver) dockerClient() (*docker.Client, error) { - if client != nil { - return client, nil +// dockerClients creates two *docker.Client, one for long running operations and +// the other for shorter operations. In test / dev mode we can use ENV vars to +// connect to the docker daemon. In production mode we will read docker.endpoint +// from the config file. +func (d *DockerDriver) dockerClients() (*docker.Client, *docker.Client, error) { + if client != nil && waitClient != nil { + return client, waitClient, nil } var err error - createClient.Do(func() { + var merr multierror.Error + createClients.Do(func() { + if err = shelpers.Init(); err != nil { + d.logger.Printf("[FATAL] driver.docker: unable to initialize stats: %v", err) + return + } + // Default to using whatever is configured in docker.endpoint. If this is // not specified we'll fall back on NewClientFromEnv which reads config from // the DOCKER_* environment variables DOCKER_HOST, DOCKER_TLS_VERIFY, and @@ -224,19 +264,41 @@ if cert+key+ca != "" { d.logger.Printf("[DEBUG] driver.docker: using TLS client connection to %s", dockerEndpoint) client, err = docker.NewTLSClient(dockerEndpoint, cert, key, ca) + if err != nil { + merr.Errors = append(merr.Errors, err) + } + waitClient, err = docker.NewTLSClient(dockerEndpoint, cert, key, ca) + if err != nil { + merr.Errors = append(merr.Errors, err) + } } else { d.logger.Printf("[DEBUG] driver.docker: using standard client connection to %s", dockerEndpoint) client, err = docker.NewClient(dockerEndpoint) + if err != nil { + merr.Errors = append(merr.Errors, err) + } + waitClient, err = docker.NewClient(dockerEndpoint) + if err != nil { + merr.Errors = append(merr.Errors, err) + } } - client.HTTPClient.Timeout = dockerTimeout + client.SetTimeout(dockerTimeout) return } d.logger.Println("[DEBUG] driver.docker: using client connection initialized from environment") client, err = docker.NewClientFromEnv() - client.HTTPClient.Timeout = dockerTimeout + if err != nil { + merr.Errors = append(merr.Errors, err) + } + client.SetTimeout(dockerTimeout) + + waitClient, err = docker.NewClientFromEnv() + if err != nil { + merr.Errors = append(merr.Errors, err) + } }) - return client, err + return client, waitClient, merr.ErrorOrNil() } func (d *DockerDriver) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { @@ -244,8 +306,8 @@ // state changes _, currentlyEnabled := node.Attributes[dockerDriverAttr] - // Initialize docker API client - client, err := d.dockerClient() + // Initialize docker API clients + client, _, err := d.dockerClients() if err != nil { delete(node.Attributes, dockerDriverAttr) if currentlyEnabled { @@ -283,11 +345,16 @@ return nil, fmt.Errorf("Failed to find task local directory: %v", task.Name) } + allocDirBind := fmt.Sprintf("%s:/%s", shared, allocdir.SharedAllocName) + taskLocalBind := fmt.Sprintf("%s:/%s", local, allocdir.TaskLocal) + + if selinuxLabel := d.config.Read("docker.volumes.selinuxlabel"); selinuxLabel != "" { + allocDirBind = fmt.Sprintf("%s:%s", allocDirBind, selinuxLabel) + taskLocalBind = fmt.Sprintf("%s:%s", taskLocalBind, selinuxLabel) + } return []string{ - // "z" and "Z" option is to allocate directory with SELinux label. - fmt.Sprintf("%s:/%s:rw,z", shared, allocdir.SharedAllocName), - // capital "Z" will label with Multi-Category Security (MCS) labels - fmt.Sprintf("%s:/%s:rw,Z", local, allocdir.TaskLocal), + allocDirBind, + taskLocalBind, }, nil } @@ -349,6 +416,11 @@ } hostConfig.Privileged = hostPrivileged + // set SHM size + if driverConfig.ShmSize != 0 { + hostConfig.ShmSize = driverConfig.ShmSize + } + // set DNS servers for _, ip := range driverConfig.DNSServers { if net.ParseIP(ip) != nil { @@ -472,7 +544,7 @@ d.logger.Printf("[DEBUG] driver.docker: setting container startup command to: %s", strings.Join(cmd, " ")) config.Cmd = cmd } else if len(driverConfig.Args) != 0 { - d.logger.Println("[DEBUG] driver.docker: ignoring command arguments because command is not specified") + config.Cmd = parsedArgs } if len(driverConfig.Labels) > 0 { @@ -505,7 +577,7 @@ if imageNotFoundMatcher.MatchString(err.Error()) { recoverable = false } - return cstructs.NewRecoverableError(fmt.Errorf("Failed to pull `%s`: %s", image, err), recoverable) + return dstructs.NewRecoverableError(fmt.Errorf("Failed to pull `%s`: %s", image, err), recoverable) } func (d *DockerDriver) Periodic() (bool, time.Duration) { @@ -609,16 +681,8 @@ } func (d *DockerDriver) Start(ctx *ExecContext, task *structs.Task) (DriverHandle, error) { - var driverConfig DockerDriverConfig - if err := mapstructure.WeakDecode(task.Config, &driverConfig); err != nil { - return nil, err - } - - if err := driverConfig.Init(); err != nil { - return nil, err - } - - if err := driverConfig.Validate(); err != nil { + driverConfig, err := NewDockerDriverConfig(task) + if err != nil { return nil, err } @@ -629,13 +693,13 @@ return nil, fmt.Errorf("Could not find task directory for task: %v", d.DriverContext.taskName) } - // Initialize docker API client - client, err := d.dockerClient() + // Initialize docker API clients + client, waitClient, err := d.dockerClients() if err != nil { return nil, fmt.Errorf("Failed to connect to docker daemon: %s", err) } - if err := d.createImage(&driverConfig, client, taskDir); err != nil { + if err := d.createImage(driverConfig, client, taskDir); err != nil { return nil, fmt.Errorf("failed to create image: %v", err) } @@ -675,7 +739,7 @@ return nil, fmt.Errorf("failed to start syslog collector: %v", err) } - config, err := d.createContainer(ctx, task, &driverConfig, ss.Addr) + config, err := d.createContainer(ctx, task, driverConfig, ss.Addr) if err != nil { d.logger.Printf("[ERR] driver.docker: failed to create container configuration for image %s: %s", image, err) pluginClient.Kill() @@ -750,6 +814,7 @@ maxKill := d.DriverContext.config.MaxKillTimeout h := &DockerHandle{ client: client, + waitClient: waitClient, executor: exec, pluginClient: pluginClient, cleanupImage: cleanupImage, @@ -759,12 +824,13 @@ version: d.config.Version, killTimeout: GetKillTimeout(task.KillTimeout, maxKill), maxKillTimeout: maxKill, - doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + doneCh: make(chan bool), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := exec.SyncServices(consulContext(d.config, container.ID)); err != nil { d.logger.Printf("[ERR] driver.docker: error registering services with consul for task: %q: %v", task.Name, err) } + go h.collectStats() go h.run() return h, nil } @@ -784,7 +850,7 @@ Reattach: pid.PluginConfig.PluginConfig(), } - client, err := d.dockerClient() + client, waitClient, err := d.dockerClients() if err != nil { return nil, fmt.Errorf("Failed to connect to docker daemon: %s", err) } @@ -811,7 +877,8 @@ exec, pluginClient, err := createExecutor(pluginConfig, d.config.LogOutput, d.config) if err != nil { d.logger.Printf("[INFO] driver.docker: couldn't re-attach to the plugin process: %v", err) - if e := client.StopContainer(pid.ContainerID, uint(pid.KillTimeout*time.Second)); e != nil { + d.logger.Printf("[DEBUG] driver.docker: stopping container %q", pid.ContainerID) + if e := client.StopContainer(pid.ContainerID, uint(pid.KillTimeout.Seconds())); e != nil { d.logger.Printf("[DEBUG] driver.docker: couldn't stop container: %v", e) } return nil, err @@ -823,6 +890,7 @@ // Return a driver handle h := &DockerHandle{ client: client, + waitClient: waitClient, executor: exec, pluginClient: pluginClient, cleanupImage: cleanupImage, @@ -832,13 +900,14 @@ version: pid.Version, killTimeout: pid.KillTimeout, maxKillTimeout: pid.MaxKillTimeout, - doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + doneCh: make(chan bool), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := exec.SyncServices(consulContext(d.config, pid.ContainerID)); err != nil { h.logger.Printf("[ERR] driver.docker: error registering services with consul: %v", err) } + go h.collectStats() go h.run() return h, nil } @@ -864,7 +933,7 @@ return h.containerID } -func (h *DockerHandle) WaitCh() chan *cstructs.WaitResult { +func (h *DockerHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -899,9 +968,19 @@ return nil } +func (h *DockerHandle) Stats() (*cstructs.TaskResourceUsage, error) { + h.resourceUsageLock.RLock() + defer h.resourceUsageLock.RUnlock() + var err error + if h.resourceUsage == nil { + err = fmt.Errorf("stats collection hasn't started yet") + } + return h.resourceUsage, err +} + func (h *DockerHandle) run() { // Wait for it... - exitCode, err := h.client.WaitContainer(h.containerID) + exitCode, err := h.waitClient.WaitContainer(h.containerID) if err != nil { h.logger.Printf("[ERR] driver.docker: failed to wait for %s; container already terminated", h.containerID) } @@ -911,7 +990,7 @@ } close(h.doneCh) - h.waitCh <- cstructs.NewWaitResult(exitCode, 0, err) + h.waitCh <- dstructs.NewWaitResult(exitCode, 0, err) close(h.waitCh) // Remove services @@ -947,3 +1026,71 @@ } } } + +// collectStats starts collecting resource usage stats of a docker container +func (h *DockerHandle) collectStats() { + statsCh := make(chan *docker.Stats) + statsOpts := docker.StatsOptions{ID: h.containerID, Done: h.doneCh, Stats: statsCh, Stream: true} + go func() { + //TODO handle Stats error + if err := h.waitClient.Stats(statsOpts); err != nil { + h.logger.Printf("[DEBUG] driver.docker: error collecting stats from container %s: %v", h.containerID, err) + } + }() + numCores := runtime.NumCPU() + for { + select { + case s := <-statsCh: + if s != nil { + ms := &cstructs.MemoryStats{ + RSS: s.MemoryStats.Stats.Rss, + Cache: s.MemoryStats.Stats.Cache, + Swap: s.MemoryStats.Stats.Swap, + MaxUsage: s.MemoryStats.MaxUsage, + Measured: DockerMeasuredMemStats, + } + + cs := &cstructs.CpuStats{ + ThrottledPeriods: s.CPUStats.ThrottlingData.ThrottledPeriods, + ThrottledTime: s.CPUStats.ThrottlingData.ThrottledTime, + Measured: DockerMeasuredCpuStats, + } + + // Calculate percentage + cores := len(s.CPUStats.CPUUsage.PercpuUsage) + cs.Percent = calculatePercent( + s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage, + s.CPUStats.SystemCPUUsage, s.PreCPUStats.SystemCPUUsage, cores) + cs.SystemMode = calculatePercent( + s.CPUStats.CPUUsage.UsageInKernelmode, s.PreCPUStats.CPUUsage.UsageInKernelmode, + s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage, cores) + cs.UserMode = calculatePercent( + s.CPUStats.CPUUsage.UsageInUsermode, s.PreCPUStats.CPUUsage.UsageInUsermode, + s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage, cores) + cs.TotalTicks = (cs.Percent / 100) * shelpers.TotalTicksAvailable() / float64(numCores) + + h.resourceUsageLock.Lock() + h.resourceUsage = &cstructs.TaskResourceUsage{ + ResourceUsage: &cstructs.ResourceUsage{ + MemoryStats: ms, + CpuStats: cs, + }, + Timestamp: s.Read.UTC().UnixNano(), + } + h.resourceUsageLock.Unlock() + } + case <-h.doneCh: + return + } + } +} + +func calculatePercent(newSample, oldSample, newTotal, oldTotal uint64, cores int) float64 { + numerator := newSample - oldSample + denom := newTotal - oldTotal + if numerator <= 0 || denom <= 0 { + return 0.0 + } + + return (float64(numerator) / float64(denom)) * float64(cores) * 100.0 +} diff -Nru nomad-0.3.2+dfsg/client/driver/docker_test.go nomad-0.4.0+dfsg/client/driver/docker_test.go --- nomad-0.3.2+dfsg/client/driver/docker_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/docker_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -143,7 +143,7 @@ containerID: "containerid", killTimeout: 5 * time.Nanosecond, maxKillTimeout: 15 * time.Nanosecond, - doneCh: make(chan struct{}), + doneCh: make(chan bool), waitCh: make(chan *cstructs.WaitResult, 1), } @@ -223,7 +223,7 @@ Name: "redis-demo", Config: map[string]interface{}{ "image": "redis", - "command": "redis-server", + "command": "/usr/local/bin/redis-server", "args": []string{"-v"}, }, Resources: &structs.Resources{ @@ -256,6 +256,10 @@ } func TestDockerDriver_Start_LoadImage(t *testing.T) { + t.Parallel() + if !testutil.DockerIsConnected(t) { + t.SkipNow() + } task := &structs.Task{ Name: "busybox-demo", Config: map[string]interface{}{ @@ -433,7 +437,7 @@ handles := make([]DriverHandle, len(taskList)) - t.Logf("==> Starting %d tasks", len(taskList)) + t.Logf("Starting %d tasks", len(taskList)) // Let's spin up a bunch of things var err error @@ -448,7 +452,7 @@ } } - t.Log("==> All tasks are started. Terminating...") + t.Log("All tasks are started. Terminating...") for idx, handle := range handles { if handle == nil { @@ -462,7 +466,7 @@ } } - t.Log("==> Test complete!") + t.Log("Test complete!") } func TestDocker_StartNVersions(t *testing.T) { @@ -484,7 +488,7 @@ handles := make([]DriverHandle, len(taskList)) - t.Logf("==> Starting %d tasks", len(taskList)) + t.Logf("Starting %d tasks", len(taskList)) // Let's spin up a bunch of things var err error @@ -499,7 +503,7 @@ } } - t.Log("==> All tasks are started. Terminating...") + t.Log("All tasks are started. Terminating...") for idx, handle := range handles { if handle == nil { @@ -513,7 +517,7 @@ } } - t.Log("==> Test complete!") + t.Log("Test complete!") } func TestDockerHostNet(t *testing.T) { @@ -752,9 +756,20 @@ handle.Kill() t.Fatalf("Should've failed") } - msg := "System error: Unable to find user alice" - if !strings.Contains(err.Error(), msg) { - t.Fatalf("Expecting '%v' in '%v'", msg, err) + + msgs := []string{ + "System error: Unable to find user alice", + "linux spec user: Unable to find user alice", + } + var found bool + for _, msg := range msgs { + if strings.Contains(err.Error(), msg) { + found = true + break + } + } + if !found { + t.Fatalf("Expected failure string not found, found %q instead", err.Error()) } } @@ -804,4 +819,50 @@ t.Fatalf("timeout") } +} + +func TestDockerDriver_Stats(t *testing.T) { + t.Parallel() + task := &structs.Task{ + Name: "sleep", + Config: map[string]interface{}{ + "image": "busybox", + "command": "/bin/sleep", + "args": []string{"100"}, + }, + LogConfig: &structs.LogConfig{ + MaxFiles: 10, + MaxFileSizeMB: 10, + }, + Resources: basicResources, + } + + _, handle, cleanup := dockerSetup(t, task) + defer cleanup() + + go func() { + time.Sleep(3 * time.Second) + ru, err := handle.Stats() + if err != nil { + t.Fatalf("err: %v", err) + } + if ru.ResourceUsage == nil { + handle.Kill() + t.Fatalf("expected resource usage") + } + err = handle.Kill() + if err != nil { + t.Fatalf("err: %v", err) + } + }() + + select { + case res := <-handle.WaitCh(): + if res.Successful() { + t.Fatalf("should err: %v", res) + } + case <-time.After(time.Duration(tu.TestMultiplier()*10) * time.Second): + t.Fatalf("timeout") + } + } diff -Nru nomad-0.3.2+dfsg/client/driver/driver.go nomad-0.4.0+dfsg/client/driver/driver.go --- nomad-0.3.2+dfsg/client/driver/driver.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/driver.go 2016-06-28 21:26:34.000000000 +0000 @@ -12,7 +12,8 @@ "github.com/hashicorp/nomad/client/fingerprint" "github.com/hashicorp/nomad/nomad/structs" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" + cstructs "github.com/hashicorp/nomad/client/structs" ) // BuiltinDrivers contains the built in registered drivers @@ -105,7 +106,7 @@ ID() string // WaitCh is used to return a channel used wait for task completion - WaitCh() chan *cstructs.WaitResult + WaitCh() chan *dstructs.WaitResult // Update is used to update the task if possible and update task related // configurations. @@ -113,6 +114,9 @@ // Kill is used to stop the task Kill() error + + // Stats returns aggregated stats of the driver + Stats() (*cstructs.TaskResourceUsage, error) } // ExecContext is shared between drivers within an allocation diff -Nru nomad-0.3.2+dfsg/client/driver/driver_test.go nomad-0.4.0+dfsg/client/driver/driver_test.go --- nomad-0.3.2+dfsg/client/driver/driver_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/driver_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -69,7 +69,7 @@ } func testConfig() *config.Config { - conf := &config.Config{} + conf := config.DefaultConfig() conf.StateDir = os.TempDir() conf.AllocDir = os.TempDir() conf.MaxKillTimeout = 10 * time.Second diff -Nru nomad-0.3.2+dfsg/client/driver/env/env.go nomad-0.4.0+dfsg/client/driver/env/env.go --- nomad-0.3.2+dfsg/client/driver/env/env.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/env/env.go 2016-06-28 21:26:34.000000000 +0000 @@ -24,19 +24,19 @@ // MemLimit is the environment variable with the tasks memory limit in MBs. MemLimit = "NOMAD_MEMORY_LIMIT" - // CpuLimit is the enviroment variable with the tasks CPU limit in MHz. + // CpuLimit is the environment variable with the tasks CPU limit in MHz. CpuLimit = "NOMAD_CPU_LIMIT" - // AllocID is the enviroment variable for passing the allocation ID. + // AllocID is the environment variable for passing the allocation ID. AllocID = "NOMAD_ALLOC_ID" - // AllocName is the enviroment variable for passing the allocation name. + // AllocName is the environment variable for passing the allocation name. AllocName = "NOMAD_ALLOC_NAME" - // TaskName is the enviroment variable for passing the task name. + // TaskName is the environment variable for passing the task name. TaskName = "NOMAD_TASK_NAME" - // AllocIndex is the enviroment variable for passing the allocation index. + // AllocIndex is the environment variable for passing the allocation index. AllocIndex = "NOMAD_ALLOC_INDEX" // AddrPrefix is the prefix for passing both dynamic and static port @@ -112,7 +112,7 @@ return replaced } -// ReplaceEnv takes an arg and replaces all occurences of environment variables +// ReplaceEnv takes an arg and replaces all occurrences of environment variables // and nomad variables. If the variable is found in the passed map it is // replaced, otherwise the original string is returned. func (t *TaskEnvironment) ReplaceEnv(arg string) string { diff -Nru nomad-0.3.2+dfsg/client/driver/exec_default.go nomad-0.4.0+dfsg/client/driver/exec_default.go --- nomad-0.3.2+dfsg/client/driver/exec_default.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/exec_default.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,12 @@ +// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris + +package driver + +import ( + "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/nomad/structs" +) + +func (d *ExecDriver) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { + return false, nil +} diff -Nru nomad-0.3.2+dfsg/client/driver/exec.go nomad-0.4.0+dfsg/client/driver/exec.go --- nomad-0.3.2+dfsg/client/driver/exec.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/exec.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,7 +7,6 @@ "os/exec" "path/filepath" "strings" - "syscall" "time" "github.com/hashicorp/go-multierror" @@ -15,7 +14,8 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" "github.com/hashicorp/nomad/nomad/structs" @@ -43,13 +43,13 @@ type execHandle struct { pluginClient *plugin.Client executor executor.Executor - isolationConfig *cstructs.IsolationConfig + isolationConfig *dstructs.IsolationConfig userPid int allocDir *allocdir.AllocDir killTimeout time.Duration maxKillTimeout time.Duration logger *log.Logger - waitCh chan *cstructs.WaitResult + waitCh chan *dstructs.WaitResult doneCh chan struct{} version string } @@ -81,33 +81,6 @@ return nil } -func (d *ExecDriver) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { - // Get the current status so that we can log any debug messages only if the - // state changes - _, currentlyEnabled := node.Attributes[execDriverAttr] - - // Only enable if cgroups are available and we are root - if _, ok := node.Attributes["unique.cgroup.mountpoint"]; !ok { - if currentlyEnabled { - d.logger.Printf("[DEBUG] driver.exec: cgroups unavailable, disabling") - } - delete(node.Attributes, execDriverAttr) - return false, nil - } else if syscall.Geteuid() != 0 { - if currentlyEnabled { - d.logger.Printf("[DEBUG] driver.exec: must run as root user, disabling") - } - delete(node.Attributes, execDriverAttr) - return false, nil - } - - if !currentlyEnabled { - d.logger.Printf("[DEBUG] driver.exec: exec driver is enabled") - } - node.Attributes[execDriverAttr] = "1" - return true, nil -} - func (d *ExecDriver) Periodic() (bool, time.Duration) { return true, 15 * time.Second } @@ -181,7 +154,7 @@ logger: d.logger, version: d.config.Version, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := exec.SyncServices(consulContext(d.config, "")); err != nil { d.logger.Printf("[ERR] driver.exec: error registering services with consul for task: %q: %v", task.Name, err) @@ -197,7 +170,7 @@ UserPid int TaskDir string AllocDir *allocdir.AllocDir - IsolationConfig *cstructs.IsolationConfig + IsolationConfig *dstructs.IsolationConfig PluginConfig *PluginReattachConfig } @@ -245,7 +218,7 @@ killTimeout: id.KillTimeout, maxKillTimeout: id.MaxKillTimeout, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := exec.SyncServices(consulContext(d.config, "")); err != nil { d.logger.Printf("[ERR] driver.exec: error registering services with consul: %v", err) @@ -272,7 +245,7 @@ return string(data) } -func (h *execHandle) WaitCh() chan *cstructs.WaitResult { +func (h *execHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -308,6 +281,10 @@ } } +func (h *execHandle) Stats() (*cstructs.TaskResourceUsage, error) { + return h.executor.Stats() +} + func (h *execHandle) run() { ps, err := h.executor.Wait() close(h.doneCh) @@ -329,7 +306,7 @@ h.logger.Printf("[ERR] driver.exec: unmounting dev,proc and alloc dirs failed: %v", e) } } - h.waitCh <- cstructs.NewWaitResult(ps.ExitCode, ps.Signal, err) + h.waitCh <- dstructs.NewWaitResult(ps.ExitCode, ps.Signal, err) close(h.waitCh) // Remove services if err := h.executor.DeregisterServices(); err != nil { diff -Nru nomad-0.3.2+dfsg/client/driver/exec_unix.go nomad-0.4.0+dfsg/client/driver/exec_unix.go --- nomad-0.3.2+dfsg/client/driver/exec_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/exec_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,36 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package driver + +import ( + "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/nomad/structs" + "golang.org/x/sys/unix" +) + +func (d *ExecDriver) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { + // Get the current status so that we can log any debug messages only if the + // state changes + _, currentlyEnabled := node.Attributes[execDriverAttr] + + // Only enable if cgroups are available and we are root + if _, ok := node.Attributes["unique.cgroup.mountpoint"]; !ok { + if currentlyEnabled { + d.logger.Printf("[DEBUG] driver.exec: cgroups unavailable, disabling") + } + delete(node.Attributes, execDriverAttr) + return false, nil + } else if unix.Geteuid() != 0 { + if currentlyEnabled { + d.logger.Printf("[DEBUG] driver.exec: must run as root user, disabling") + } + delete(node.Attributes, execDriverAttr) + return false, nil + } + + if !currentlyEnabled { + d.logger.Printf("[DEBUG] driver.exec: exec driver is enabled") + } + node.Attributes[execDriverAttr] = "1" + return true, nil +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/checks_basic.go nomad-0.4.0+dfsg/client/driver/executor/checks_basic.go --- nomad-0.3.2+dfsg/client/driver/executor/checks_basic.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/checks_basic.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,10 +0,0 @@ -// +build !linux - -package executor - -import ( - "os/exec" -) - -func (e *ExecScriptCheck) setChroot(cmd *exec.Cmd) { -} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/checks.go nomad-0.4.0+dfsg/client/driver/executor/checks.go --- nomad-0.3.2+dfsg/client/driver/executor/checks.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/checks.go 2016-06-28 21:26:34.000000000 +0000 @@ -10,7 +10,6 @@ "github.com/armon/circbuf" docker "github.com/fsouza/go-dockerclient" - cstructs "github.com/hashicorp/nomad/client/driver/structs" ) @@ -20,20 +19,26 @@ client *docker.Client ) +const ( + // The default check timeout + defaultCheckTimeout = 30 * time.Second +) + // DockerScriptCheck runs nagios compatible scripts in a docker container and // provides the check result type DockerScriptCheck struct { - id string - interval time.Duration - containerID string + id string // id of the check + interval time.Duration // interval of the check + timeout time.Duration // timeout of the check + containerID string // container id in which the check will be invoked logger *log.Logger - cmd string - args []string + cmd string // check command + args []string // check command arguments - dockerEndpoint string - tlsCert string - tlsCa string - tlsKey string + dockerEndpoint string // docker endpoint + tlsCert string // path to tls certificate + tlsCa string // path to tls ca + tlsKey string // path to tls key } // dockerClient creates the client to interact with the docker daemon @@ -117,15 +122,24 @@ return d.interval } +// Timeout returns the duration after which a check is timed out. +func (d *DockerScriptCheck) Timeout() time.Duration { + if d.timeout == 0 { + return defaultCheckTimeout + } + return d.timeout +} + // ExecScriptCheck runs a nagios compatible script and returns the check result type ExecScriptCheck struct { - id string - interval time.Duration - cmd string - args []string - taskDir string + id string // id of the script check + interval time.Duration // interval at which the check is invoked + timeout time.Duration // timeout duration of the check + cmd string // command of the check + args []string // args passed to the check + taskDir string // the root directory of the check - FSIsolation bool + FSIsolation bool // indicates whether the check has to be run within a chroot } // Run runs an exec script check @@ -146,6 +160,7 @@ for { select { case err := <-errCh: + endTime := time.Now() if err == nil { return &cstructs.CheckResult{ ExitCode: 0, @@ -163,8 +178,9 @@ ExitCode: exitCode, Output: string(buf.Bytes()), Timestamp: ts, + Duration: endTime.Sub(ts), } - case <-time.After(30 * time.Second): + case <-time.After(e.Timeout()): errCh <- fmt.Errorf("timed out after waiting 30s") } } @@ -180,3 +196,11 @@ func (e *ExecScriptCheck) Interval() time.Duration { return e.interval } + +// Timeout returns the duration after which a check is timed out. +func (e *ExecScriptCheck) Timeout() time.Duration { + if e.timeout == 0 { + return defaultCheckTimeout + } + return e.timeout +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/checks_linux.go nomad-0.4.0+dfsg/client/driver/executor/checks_linux.go --- nomad-0.3.2+dfsg/client/driver/executor/checks_linux.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/checks_linux.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,16 +0,0 @@ -package executor - -import ( - "os/exec" - "syscall" -) - -func (e *ExecScriptCheck) setChroot(cmd *exec.Cmd) { - if e.FSIsolation { - if cmd.SysProcAttr == nil { - cmd.SysProcAttr = &syscall.SysProcAttr{} - } - cmd.SysProcAttr.Chroot = e.taskDir - } - cmd.Dir = "/" -} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/checks_unix.go nomad-0.4.0+dfsg/client/driver/executor/checks_unix.go --- nomad-0.3.2+dfsg/client/driver/executor/checks_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/checks_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,18 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package executor + +import ( + "os/exec" + "syscall" +) + +func (e *ExecScriptCheck) setChroot(cmd *exec.Cmd) { + if e.FSIsolation { + if cmd.SysProcAttr == nil { + cmd.SysProcAttr = &syscall.SysProcAttr{} + } + cmd.SysProcAttr.Chroot = e.taskDir + } + cmd.Dir = "/" +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/checks_windows.go nomad-0.4.0+dfsg/client/driver/executor/checks_windows.go --- nomad-0.3.2+dfsg/client/driver/executor/checks_windows.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/checks_windows.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,8 @@ +// +build windows + +package executor + +import "os/exec" + +func (e *ExecScriptCheck) setChroot(cmd *exec.Cmd) { +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor_basic.go nomad-0.4.0+dfsg/client/driver/executor/executor_basic.go --- nomad-0.3.2+dfsg/client/driver/executor/executor_basic.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor_basic.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,7 +2,14 @@ package executor -import cgroupConfig "github.com/opencontainers/runc/libcontainer/configs" +import ( + "os" + + cstructs "github.com/hashicorp/nomad/client/structs" + "github.com/mitchellh/go-ps" + + cgroupConfig "github.com/opencontainers/runc/libcontainer/configs" +) func (e *UniversalExecutor) configureChroot() error { return nil @@ -27,3 +34,19 @@ func (e *UniversalExecutor) configureIsolation() error { return nil } + +func (e *UniversalExecutor) Stats() (*cstructs.TaskResourceUsage, error) { + pidStats, err := e.pidStats() + if err != nil { + return nil, err + } + return e.aggregatedResourceUsage(pidStats), nil +} + +func (e *UniversalExecutor) getAllPids() (map[int]*nomadPid, error) { + allProcesses, err := ps.Processes() + if err != nil { + return nil, err + } + return e.scanPids(os.Getpid(), allProcesses) +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor.go nomad-0.4.0+dfsg/client/driver/executor/executor.go --- nomad-0.3.2+dfsg/client/driver/executor/executor.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor.go 2016-06-28 21:26:34.000000000 +0000 @@ -9,20 +9,41 @@ "os/exec" "path/filepath" "runtime" + "strconv" "strings" "sync" "syscall" "time" "github.com/hashicorp/go-multierror" + "github.com/mitchellh/go-ps" cgroupConfig "github.com/opencontainers/runc/libcontainer/configs" + "github.com/shirou/gopsutil/process" "github.com/hashicorp/nomad/client/allocdir" - "github.com/hashicorp/nomad/client/consul" "github.com/hashicorp/nomad/client/driver/env" "github.com/hashicorp/nomad/client/driver/logging" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + "github.com/hashicorp/nomad/client/stats" + "github.com/hashicorp/nomad/command/agent/consul" + shelpers "github.com/hashicorp/nomad/helper/stats" "github.com/hashicorp/nomad/nomad/structs" + "github.com/hashicorp/nomad/nomad/structs/config" + + dstructs "github.com/hashicorp/nomad/client/driver/structs" + cstructs "github.com/hashicorp/nomad/client/structs" +) + +const ( + // pidScanInterval is the interval at which the executor scans the process + // tree for finding out the pids that the executor and it's child processes + // have forked + pidScanInterval = 5 * time.Second +) + +var ( + // The statistics the basic executor exposes + ExecutorBasicMeasuredMemStats = []string{"RSS", "Swap"} + ExecutorBasicMeasuredCpuStats = []string{"System Mode", "User Mode", "Percent"} ) // Executor is the interface which allows a driver to launch and supervise @@ -38,12 +59,14 @@ SyncServices(ctx *ConsulContext) error DeregisterServices() error Version() (*ExecutorVersion, error) + Stats() (*cstructs.TaskResourceUsage, error) } -// ConsulContext holds context to configure the consul client and run checks +// ConsulContext holds context to configure the Consul client and run checks type ConsulContext struct { - // ConsulConfig is the configuration used to create a consul client - ConsulConfig *consul.ConsulConfig + // ConsulConfig contains the configuration information for talking + // with this Nomad Agent's Consul Agent. + ConsulConfig *config.ConsulConfig // ContainerID is the ID of the container ContainerID string @@ -117,14 +140,22 @@ Pid int ExitCode int Signal int - IsolationConfig *cstructs.IsolationConfig + IsolationConfig *dstructs.IsolationConfig Time time.Time } +// nomadPid holds a pid and it's cpu percentage calculator +type nomadPid struct { + pid int + cpuStatsTotal *stats.CpuStats + cpuStatsUser *stats.CpuStats + cpuStatsSys *stats.CpuStats +} + // SyslogServerState holds the address and islation information of a launched // syslog server type SyslogServerState struct { - IsolationConfig *cstructs.IsolationConfig + IsolationConfig *dstructs.IsolationConfig Addr string } @@ -145,14 +176,19 @@ ctx *ExecutorContext command *ExecCommand - taskDir string - exitState *ProcessState - processExited chan interface{} + pids map[int]*nomadPid + pidLock sync.RWMutex + taskDir string + exitState *ProcessState + processExited chan interface{} + fsIsolationEnforced bool lre *logging.FileRotator lro *logging.FileRotator rotatorLock sync.Mutex + shutdownCh chan struct{} + syslogServer *logging.SyslogServer syslogChan chan *logging.SyslogMessage @@ -160,17 +196,31 @@ cgPaths map[string]string cgLock sync.Mutex - consulService *consul.ConsulService - consulCtx *ConsulContext - logger *log.Logger + consulSyncer *consul.Syncer + consulCtx *ConsulContext + totalCpuStats *stats.CpuStats + userCpuStats *stats.CpuStats + systemCpuStats *stats.CpuStats + logger *log.Logger } // NewExecutor returns an Executor func NewExecutor(logger *log.Logger) Executor { - return &UniversalExecutor{ - logger: logger, - processExited: make(chan interface{}), + if err := shelpers.Init(); err != nil { + logger.Printf("[FATAL] executor: unable to initialize stats: %v", err) + return nil } + + exec := &UniversalExecutor{ + logger: logger, + processExited: make(chan interface{}), + totalCpuStats: stats.NewCpuStats(), + userCpuStats: stats.NewCpuStats(), + systemCpuStats: stats.NewCpuStats(), + pids: make(map[int]*nomadPid), + } + + return exec } // Version returns the api version of the executor @@ -186,23 +236,30 @@ e.ctx = ctx e.command = command + // setting the user of the process + if command.User != "" { + e.logger.Printf("[DEBUG] executor: running command as %s", command.User) + if err := e.runAs(command.User); err != nil { + return nil, err + } + } + // configuring the task dir if err := e.configureTaskDir(); err != nil { return nil, err } + e.ctx.TaskEnv.Build() // configuring the chroot, cgroup and enters the plugin process in the // chroot if err := e.configureIsolation(); err != nil { return nil, err } - - // setting the user of the process - if command.User != "" { - e.logger.Printf("[DEBUG] executor: running command as %s", command.User) - if err := e.runAs(command.User); err != nil { - return nil, err - } + // Apply ourselves into the cgroup. The executor MUST be in the cgroup + // before the user task is started, otherwise we are subject to a fork + // attack in which a process escapes isolation by immediately forking. + if err := e.applyLimits(os.Getpid()); err != nil { + return nil, err } // Setup the loggers @@ -212,8 +269,6 @@ e.cmd.Stdout = e.lro e.cmd.Stderr = e.lre - e.ctx.TaskEnv.Build() - // Look up the binary path and make it executable absPath, err := e.lookupBin(ctx.TaskEnv.ReplaceEnv(command.Cmd)) if err != nil { @@ -224,10 +279,11 @@ return nil, err } - // Determine the path to run as it may have to be relative to the chroot. path := absPath - if e.command.FSIsolation { - rel, err := filepath.Rel(e.taskDir, absPath) + + // Determine the path to run as it may have to be relative to the chroot. + if e.fsIsolationEnforced { + rel, err := filepath.Rel(e.taskDir, path) if err != nil { return nil, err } @@ -236,22 +292,16 @@ // Set the commands arguments e.cmd.Path = path - e.cmd.Args = append([]string{path}, ctx.TaskEnv.ParseAndReplace(command.Args)...) + e.cmd.Args = append([]string{e.cmd.Path}, ctx.TaskEnv.ParseAndReplace(command.Args)...) e.cmd.Env = ctx.TaskEnv.EnvList() - // Apply ourselves into the cgroup. The executor MUST be in the cgroup - // before the user task is started, otherwise we are subject to a fork - // attack in which a process escapes isolation by immediately forking. - if err := e.applyLimits(os.Getpid()); err != nil { - return nil, err - } - // Start the process if err := e.cmd.Start(); err != nil { return nil, err } + go e.collectPids() go e.wait() - ic := &cstructs.IsolationConfig{Cgroup: e.groups, CgroupPaths: e.cgPaths} + ic := &dstructs.IsolationConfig{Cgroup: e.groups, CgroupPaths: e.cgPaths} return &ProcessState{Pid: e.cmd.Process.Pid, ExitCode: -1, IsolationConfig: ic, Time: time.Now()}, nil } @@ -315,19 +365,31 @@ e.lre.MaxFiles = task.LogConfig.MaxFiles e.lre.FileSize = fileSize - // Re-syncing task with consul service - if e.consulService != nil { - if err := e.consulService.SyncTask(task); err != nil { - return err - } + // Re-syncing task with Consul agent + if e.consulSyncer != nil { + e.interpolateServices(e.ctx.Task) + domain := consul.NewExecutorDomain(e.ctx.AllocID, task.Name) + serviceMap := generateServiceKeys(e.ctx.AllocID, task.Services) + e.consulSyncer.SetServices(domain, serviceMap) } return nil } +// generateServiceKeys takes a list of interpolated Nomad Services and returns a map +// of ServiceKeys to Nomad Services. +func generateServiceKeys(allocID string, services []*structs.Service) map[consul.ServiceKey]*structs.Service { + keys := make(map[consul.ServiceKey]*structs.Service, len(services)) + for _, service := range services { + key := consul.GenerateServiceKey(service) + keys[key] = service + } + return keys +} + func (e *UniversalExecutor) wait() { defer close(e.processExited) err := e.cmd.Wait() - ic := &cstructs.IsolationConfig{Cgroup: e.groups, CgroupPaths: e.cgPaths} + ic := &dstructs.IsolationConfig{Cgroup: e.groups, CgroupPaths: e.cgPaths} if err == nil { e.exitState = &ProcessState{Pid: 0, ExitCode: 0, IsolationConfig: ic, Time: time.Now()} return @@ -338,8 +400,16 @@ if status, ok := exitErr.Sys().(syscall.WaitStatus); ok { exitCode = status.ExitStatus() if status.Signaled() { + // bash(1) uses the lower 7 bits of a uint8 + // to indicate normal program failure (see + // ). If a process terminates due + // to a signal, encode the signal number to + // indicate which signal caused the process + // to terminate. Mirror this exit code + // encoding scheme. + const exitSignalBase = 128 signal = int(status.Signal()) - exitCode = 128 + signal + exitCode = exitSignalBase + signal } } } else { @@ -365,6 +435,10 @@ e.lre.Close() e.lro.Close() + if e.consulSyncer != nil { + e.consulSyncer.Shutdown() + } + // If the executor did not launch a process, return. if e.command == nil { return nil @@ -419,33 +493,75 @@ return nil } +// SyncServices syncs the services of the task that the executor is running with +// Consul func (e *UniversalExecutor) SyncServices(ctx *ConsulContext) error { e.logger.Printf("[INFO] executor: registering services") e.consulCtx = ctx - if e.consulService == nil { - cs, err := consul.NewConsulService(ctx.ConsulConfig, e.logger, e.ctx.AllocID) + if e.consulSyncer == nil { + cs, err := consul.NewSyncer(ctx.ConsulConfig, e.shutdownCh, e.logger) if err != nil { return err } - cs.SetDelegatedChecks(e.createCheckMap(), e.createCheck) - e.consulService = cs + e.consulSyncer = cs + go e.consulSyncer.Run() } - if e.ctx != nil { - e.interpolateServices(e.ctx.Task) - } - err := e.consulService.SyncTask(e.ctx.Task) - go e.consulService.PeriodicSync() - return err + e.interpolateServices(e.ctx.Task) + e.consulSyncer.SetDelegatedChecks(e.createCheckMap(), e.createCheck) + e.consulSyncer.SetAddrFinder(e.ctx.Task.FindHostAndPortFor) + domain := consul.NewExecutorDomain(e.ctx.AllocID, e.ctx.Task.Name) + serviceMap := generateServiceKeys(e.ctx.AllocID, e.ctx.Task.Services) + e.consulSyncer.SetServices(domain, serviceMap) + return nil } +// DeregisterServices removes the services of the task that the executor is +// running from Consul func (e *UniversalExecutor) DeregisterServices() error { e.logger.Printf("[INFO] executor: de-registering services and shutting down consul service") - if e.consulService != nil { - return e.consulService.Shutdown() + if e.consulSyncer != nil { + return e.consulSyncer.Shutdown() } return nil } +// pidStats returns the resource usage stats per pid +func (e *UniversalExecutor) pidStats() (map[string]*cstructs.ResourceUsage, error) { + stats := make(map[string]*cstructs.ResourceUsage) + e.pidLock.RLock() + pids := make(map[int]*nomadPid, len(e.pids)) + for k, v := range e.pids { + pids[k] = v + } + e.pidLock.RUnlock() + for pid, np := range pids { + p, err := process.NewProcess(int32(pid)) + if err != nil { + e.logger.Printf("[DEBUG] executor: unable to create new process with pid: %v", pid) + continue + } + ms := &cstructs.MemoryStats{} + if memInfo, err := p.MemoryInfo(); err == nil { + ms.RSS = memInfo.RSS + ms.Swap = memInfo.Swap + ms.Measured = ExecutorBasicMeasuredMemStats + } + + cs := &cstructs.CpuStats{} + if cpuStats, err := p.Times(); err == nil { + cs.SystemMode = np.cpuStatsSys.Percent(cpuStats.System * float64(time.Second)) + cs.UserMode = np.cpuStatsUser.Percent(cpuStats.User * float64(time.Second)) + cs.Measured = ExecutorBasicMeasuredCpuStats + + // calculate cpu usage percent + cs.Percent = np.cpuStatsTotal.Percent(cpuStats.Total() * float64(time.Second)) + } + stats[strconv.Itoa(pid)] = &cstructs.ResourceUsage{MemoryStats: ms, CpuStats: cs} + } + + return stats, nil +} + // configureTaskDir sets the task dir in the executor func (e *UniversalExecutor) configureTaskDir() error { taskDir, ok := e.ctx.AllocDir.TaskDirs[e.ctx.Task.Name] @@ -566,6 +682,7 @@ return &DockerScriptCheck{ id: checkID, interval: check.Interval, + timeout: check.Timeout, containerID: e.consulCtx.ContainerID, logger: e.logger, cmd: check.Command, @@ -573,10 +690,12 @@ }, nil } - if check.Type == structs.ServiceCheckScript && e.ctx.Driver == "exec" { + if check.Type == structs.ServiceCheckScript && (e.ctx.Driver == "exec" || + e.ctx.Driver == "raw_exec" || e.ctx.Driver == "java") { return &ExecScriptCheck{ id: checkID, interval: check.Interval, + timeout: check.Timeout, cmd: check.Command, args: check.Args, taskDir: e.taskDir, @@ -605,3 +724,127 @@ service.Tags = e.ctx.TaskEnv.ParseAndReplace(service.Tags) } } + +// collectPids collects the pids of the child processes that the executor is +// running every 5 seconds +func (e *UniversalExecutor) collectPids() { + // Fire the timer right away when the executor starts from there on the pids + // are collected every scan interval + timer := time.NewTimer(0) + defer timer.Stop() + for { + select { + case <-timer.C: + pids, err := e.getAllPids() + if err != nil { + e.logger.Printf("[DEBUG] executor: error collecting pids: %v", err) + } + e.pidLock.Lock() + + // Adding pids which are not being tracked + for pid, np := range pids { + if _, ok := e.pids[pid]; !ok { + e.pids[pid] = np + } + } + // Removing pids which are no longer present + for pid := range e.pids { + if _, ok := pids[pid]; !ok { + delete(e.pids, pid) + } + } + e.pidLock.Unlock() + timer.Reset(pidScanInterval) + case <-e.processExited: + return + } + } +} + +// scanPids scans all the pids on the machine running the current executor and +// returns the child processes of the executor. +func (e *UniversalExecutor) scanPids(parentPid int, allPids []ps.Process) (map[int]*nomadPid, error) { + processFamily := make(map[int]struct{}) + processFamily[parentPid] = struct{}{} + + // A buffer for holding pids which haven't matched with any parent pid + var pidsRemaining []ps.Process + for { + // flag to indicate if we have found a match + foundNewPid := false + + for _, pid := range allPids { + _, childPid := processFamily[pid.PPid()] + + // checking if the pid is a child of any of the parents + if childPid { + processFamily[pid.Pid()] = struct{}{} + foundNewPid = true + } else { + // if it is not, then we add the pid to the buffer + pidsRemaining = append(pidsRemaining, pid) + } + // scan only the pids which are left in the buffer + allPids = pidsRemaining + } + + // not scanning anymore if we couldn't find a single match + if !foundNewPid { + break + } + } + res := make(map[int]*nomadPid) + for pid := range processFamily { + np := nomadPid{ + pid: pid, + cpuStatsTotal: stats.NewCpuStats(), + cpuStatsUser: stats.NewCpuStats(), + cpuStatsSys: stats.NewCpuStats(), + } + res[pid] = &np + } + return res, nil +} + +// aggregatedResourceUsage aggregates the resource usage of all the pids and +// returns a TaskResourceUsage data point +func (e *UniversalExecutor) aggregatedResourceUsage(pidStats map[string]*cstructs.ResourceUsage) *cstructs.TaskResourceUsage { + ts := time.Now().UTC().UnixNano() + var ( + systemModeCPU, userModeCPU, percent float64 + totalRSS, totalSwap uint64 + ) + + for _, pidStat := range pidStats { + systemModeCPU += pidStat.CpuStats.SystemMode + userModeCPU += pidStat.CpuStats.UserMode + percent += pidStat.CpuStats.Percent + + totalRSS += pidStat.MemoryStats.RSS + totalSwap += pidStat.MemoryStats.Swap + } + + totalCPU := &cstructs.CpuStats{ + SystemMode: systemModeCPU, + UserMode: userModeCPU, + Percent: percent, + Measured: ExecutorBasicMeasuredCpuStats, + TotalTicks: e.systemCpuStats.TicksConsumed(percent), + } + + totalMemory := &cstructs.MemoryStats{ + RSS: totalRSS, + Swap: totalSwap, + Measured: ExecutorBasicMeasuredMemStats, + } + + resourceUsage := cstructs.ResourceUsage{ + MemoryStats: totalMemory, + CpuStats: totalCPU, + } + return &cstructs.TaskResourceUsage{ + ResourceUsage: &resourceUsage, + Timestamp: ts, + Pids: pidStats, + } +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor_linux.go nomad-0.4.0+dfsg/client/driver/executor/executor_linux.go --- nomad-0.3.2+dfsg/client/driver/executor/executor_linux.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor_linux.go 2016-06-28 21:26:34.000000000 +0000 @@ -8,13 +8,18 @@ "strconv" "strings" "syscall" + "time" "github.com/hashicorp/go-multierror" + "github.com/mitchellh/go-ps" "github.com/opencontainers/runc/libcontainer/cgroups" cgroupFs "github.com/opencontainers/runc/libcontainer/cgroups/fs" cgroupConfig "github.com/opencontainers/runc/libcontainer/configs" + "github.com/opencontainers/runc/libcontainer/system" "github.com/hashicorp/nomad/client/allocdir" + "github.com/hashicorp/nomad/client/stats" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/nomad/structs" ) @@ -31,6 +36,13 @@ "/sbin": "/sbin", "/usr": "/usr", } + + // clockTicks is the clocks per second of the machine + clockTicks = uint64(system.GetClockTicks()) + + // The statistics the executor exposes when using cgroups + ExecutorCgroupMeasuredMemStats = []string{"RSS", "Cache", "Swap", "Max Usage", "Kernel Usage", "Kernel Max Usage"} + ExecutorCgroupMeasuredCpuStats = []string{"System Mode", "User Mode", "Throttled Periods", "Throttled Time", "Percent"} ) // configureIsolation configures chroot and creates cgroups @@ -116,6 +128,67 @@ return nil } +// Stats reports the resource utilization of the cgroup. If there is no resource +// isolation we aggregate the resource utilization of all the pids launched by +// the executor. +func (e *UniversalExecutor) Stats() (*cstructs.TaskResourceUsage, error) { + if !e.command.ResourceLimits { + pidStats, err := e.pidStats() + if err != nil { + return nil, err + } + return e.aggregatedResourceUsage(pidStats), nil + } + ts := time.Now() + manager := getCgroupManager(e.groups, e.cgPaths) + stats, err := manager.GetStats() + if err != nil { + return nil, err + } + + // Memory Related Stats + swap := stats.MemoryStats.SwapUsage + maxUsage := stats.MemoryStats.Usage.MaxUsage + rss := stats.MemoryStats.Stats["rss"] + cache := stats.MemoryStats.Stats["cache"] + ms := &cstructs.MemoryStats{ + RSS: rss, + Cache: cache, + Swap: swap.Usage, + MaxUsage: maxUsage, + KernelUsage: stats.MemoryStats.KernelUsage.Usage, + KernelMaxUsage: stats.MemoryStats.KernelUsage.MaxUsage, + Measured: ExecutorCgroupMeasuredMemStats, + } + + // CPU Related Stats + totalProcessCPUUsage := float64(stats.CpuStats.CpuUsage.TotalUsage) + userModeTime := float64(stats.CpuStats.CpuUsage.UsageInUsermode) + kernelModeTime := float64(stats.CpuStats.CpuUsage.UsageInKernelmode) + + totalPercent := e.totalCpuStats.Percent(totalProcessCPUUsage) + cs := &cstructs.CpuStats{ + SystemMode: e.systemCpuStats.Percent(kernelModeTime), + UserMode: e.userCpuStats.Percent(userModeTime), + Percent: totalPercent, + ThrottledPeriods: stats.CpuStats.ThrottlingData.ThrottledPeriods, + ThrottledTime: stats.CpuStats.ThrottlingData.ThrottledTime, + TotalTicks: e.systemCpuStats.TicksConsumed(totalPercent), + Measured: ExecutorCgroupMeasuredCpuStats, + } + taskResUsage := cstructs.TaskResourceUsage{ + ResourceUsage: &cstructs.ResourceUsage{ + MemoryStats: ms, + CpuStats: cs, + }, + Timestamp: ts.UTC().UnixNano(), + } + if pidStats, err := e.pidStats(); err == nil { + taskResUsage.Pids = pidStats + } + return &taskResUsage, nil +} + // runAs takes a user id as a string and looks up the user, and sets the command // to execute as that user. func (e *UniversalExecutor) runAs(userid string) error { @@ -174,6 +247,7 @@ return err } + e.fsIsolationEnforced = true return nil } @@ -186,6 +260,35 @@ return e.ctx.AllocDir.UnmountAll() } +// getAllPids returns the pids of all the processes spun up by the executor. We +// use the libcontainer apis to get the pids when the user is using cgroup +// isolation and we scan the entire process table if the user is not using any +// isolation +func (e *UniversalExecutor) getAllPids() (map[int]*nomadPid, error) { + if e.command.ResourceLimits { + manager := getCgroupManager(e.groups, e.cgPaths) + pids, err := manager.GetAllPids() + if err != nil { + return nil, err + } + np := make(map[int]*nomadPid, len(pids)) + for _, pid := range pids { + np[pid] = &nomadPid{ + pid: pid, + cpuStatsTotal: stats.NewCpuStats(), + cpuStatsSys: stats.NewCpuStats(), + cpuStatsUser: stats.NewCpuStats(), + } + } + return np, nil + } + allProcesses, err := ps.Processes() + if err != nil { + return nil, err + } + return e.scanPids(os.Getpid(), allProcesses) +} + // destroyCgroup kills all processes in the cgroup and removes the cgroup // configuration from the host. This function is idempotent. func DestroyCgroup(groups *cgroupConfig.Cgroup, cgPaths map[string]string, executorPid int) error { diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor_posix.go nomad-0.4.0+dfsg/client/driver/executor/executor_posix.go --- nomad-0.3.2+dfsg/client/driver/executor/executor_posix.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor_posix.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,50 +0,0 @@ -// +build !windows - -package executor - -import ( - "fmt" - "io" - "log/syslog" - - "github.com/hashicorp/nomad/client/driver/logging" -) - -func (e *UniversalExecutor) LaunchSyslogServer(ctx *ExecutorContext) (*SyslogServerState, error) { - e.ctx = ctx - - // configuring the task dir - if err := e.configureTaskDir(); err != nil { - return nil, err - } - - e.syslogChan = make(chan *logging.SyslogMessage, 2048) - l, err := e.getListener(e.ctx.PortLowerBound, e.ctx.PortUpperBound) - if err != nil { - return nil, err - } - e.logger.Printf("[DEBUG] sylog-server: launching syslog server on addr: %v", l.Addr().String()) - if err := e.configureLoggers(); err != nil { - return nil, err - } - - e.syslogServer = logging.NewSyslogServer(l, e.syslogChan, e.logger) - go e.syslogServer.Start() - go e.collectLogs(e.lre, e.lro) - syslogAddr := fmt.Sprintf("%s://%s", l.Addr().Network(), l.Addr().String()) - return &SyslogServerState{Addr: syslogAddr}, nil -} - -func (e *UniversalExecutor) collectLogs(we io.Writer, wo io.Writer) { - for logParts := range e.syslogChan { - // If the severity of the log line is err then we write to stderr - // otherwise all messages go to stdout - if logParts.Severity == syslog.LOG_ERR { - e.lre.Write(logParts.Message) - e.lre.Write([]byte{'\n'}) - } else { - e.lro.Write(logParts.Message) - e.lro.Write([]byte{'\n'}) - } - } -} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor_test.go nomad-0.4.0+dfsg/client/driver/executor/executor_test.go --- nomad-0.3.2+dfsg/client/driver/executor/executor_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -12,6 +12,8 @@ "testing" "time" + "github.com/mitchellh/go-ps" + "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/driver/env" cstructs "github.com/hashicorp/nomad/client/driver/structs" @@ -131,7 +133,14 @@ } go func() { - time.Sleep(1 * time.Second) + time.Sleep(3 * time.Second) + ru, err := executor.Stats() + if err != nil { + t.Fatalf("err: %v", err) + } + if len(ru.Pids) != 2 { + t.Fatalf("expected number of pids: 2, actual: %v", len(ru.Pids)) + } proc, err := os.FindProcess(ps.Pid) if err != nil { t.Fatalf("err: %v", err) @@ -343,3 +352,45 @@ t.Fatalf("expected: %v, actual: %v", expectedCheckArgs, task.Services[0].Checks[0].Args) } } + +func TestScanPids(t *testing.T) { + p1 := NewFakeProcess(2, 5) + p2 := NewFakeProcess(10, 2) + p3 := NewFakeProcess(15, 6) + p4 := NewFakeProcess(3, 10) + p5 := NewFakeProcess(20, 18) + + // Make a fake exececutor + ctx := testExecutorContext(t) + defer ctx.AllocDir.Destroy() + executor := NewExecutor(log.New(os.Stdout, "", log.LstdFlags)).(*UniversalExecutor) + + nomadPids, err := executor.scanPids(5, []ps.Process{p1, p2, p3, p4, p5}) + if err != nil { + t.Fatalf("error: %v", err) + } + if len(nomadPids) != 4 { + t.Fatalf("expected: 4, actual: %v", len(nomadPids)) + } +} + +type FakeProcess struct { + pid int + ppid int +} + +func (f FakeProcess) Pid() int { + return f.pid +} + +func (f FakeProcess) PPid() int { + return f.ppid +} + +func (f FakeProcess) Executable() string { + return "fake" +} + +func NewFakeProcess(pid int, ppid int) ps.Process { + return FakeProcess{pid: pid, ppid: ppid} +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor/executor_unix.go nomad-0.4.0+dfsg/client/driver/executor/executor_unix.go --- nomad-0.3.2+dfsg/client/driver/executor/executor_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor/executor_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,50 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package executor + +import ( + "fmt" + "io" + "log/syslog" + + "github.com/hashicorp/nomad/client/driver/logging" +) + +func (e *UniversalExecutor) LaunchSyslogServer(ctx *ExecutorContext) (*SyslogServerState, error) { + e.ctx = ctx + + // configuring the task dir + if err := e.configureTaskDir(); err != nil { + return nil, err + } + + e.syslogChan = make(chan *logging.SyslogMessage, 2048) + l, err := e.getListener(e.ctx.PortLowerBound, e.ctx.PortUpperBound) + if err != nil { + return nil, err + } + e.logger.Printf("[DEBUG] sylog-server: launching syslog server on addr: %v", l.Addr().String()) + if err := e.configureLoggers(); err != nil { + return nil, err + } + + e.syslogServer = logging.NewSyslogServer(l, e.syslogChan, e.logger) + go e.syslogServer.Start() + go e.collectLogs(e.lre, e.lro) + syslogAddr := fmt.Sprintf("%s://%s", l.Addr().Network(), l.Addr().String()) + return &SyslogServerState{Addr: syslogAddr}, nil +} + +func (e *UniversalExecutor) collectLogs(we io.Writer, wo io.Writer) { + for logParts := range e.syslogChan { + // If the severity of the log line is err then we write to stderr + // otherwise all messages go to stdout + if logParts.Severity == syslog.LOG_ERR { + e.lre.Write(logParts.Message) + e.lre.Write([]byte{'\n'}) + } else { + e.lro.Write(logParts.Message) + e.lro.Write([]byte{'\n'}) + } + } +} diff -Nru nomad-0.3.2+dfsg/client/driver/executor_plugin.go nomad-0.4.0+dfsg/client/driver/executor_plugin.go --- nomad-0.3.2+dfsg/client/driver/executor_plugin.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/executor_plugin.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,6 +7,7 @@ "github.com/hashicorp/go-plugin" "github.com/hashicorp/nomad/client/driver/executor" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/nomad/structs" ) @@ -88,6 +89,12 @@ return &version, err } +func (e *ExecutorRPC) Stats() (*cstructs.TaskResourceUsage, error) { + var resourceUsage cstructs.TaskResourceUsage + err := e.client.Call("Plugin.Stats", new(interface{}), &resourceUsage) + return &resourceUsage, err +} + type ExecutorRPCServer struct { Impl executor.Executor logger *log.Logger @@ -148,6 +155,14 @@ } return err } + +func (e *ExecutorRPCServer) Stats(args interface{}, resourceUsage *cstructs.TaskResourceUsage) error { + ru, err := e.Impl.Stats() + if ru != nil { + *resourceUsage = *ru + } + return err +} type ExecutorPlugin struct { logger *log.Logger diff -Nru nomad-0.3.2+dfsg/client/driver/java.go nomad-0.4.0+dfsg/client/driver/java.go --- nomad-0.3.2+dfsg/client/driver/java.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/java.go 2016-06-28 21:26:34.000000000 +0000 @@ -19,8 +19,9 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" "github.com/hashicorp/nomad/client/fingerprint" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" "github.com/hashicorp/nomad/nomad/structs" @@ -50,7 +51,7 @@ pluginClient *plugin.Client userPid int executor executor.Executor - isolationConfig *cstructs.IsolationConfig + isolationConfig *dstructs.IsolationConfig taskDir string allocDir *allocdir.AllocDir @@ -58,7 +59,7 @@ maxKillTimeout time.Duration version string logger *log.Logger - waitCh chan *cstructs.WaitResult + waitCh chan *dstructs.WaitResult doneCh chan struct{} } @@ -241,7 +242,7 @@ version: d.config.Version, logger: d.logger, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { d.logger.Printf("[ERR] driver.java: error registering services with consul for task: %q: %v", task.Name, err) @@ -262,7 +263,7 @@ KillTimeout time.Duration MaxKillTimeout time.Duration PluginConfig *PluginReattachConfig - IsolationConfig *cstructs.IsolationConfig + IsolationConfig *dstructs.IsolationConfig TaskDir string AllocDir *allocdir.AllocDir UserPid int @@ -315,7 +316,7 @@ killTimeout: id.KillTimeout, maxKillTimeout: id.MaxKillTimeout, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { d.logger.Printf("[ERR] driver.java: error registering services with consul: %v", err) @@ -344,7 +345,7 @@ return string(data) } -func (h *javaHandle) WaitCh() chan *cstructs.WaitResult { +func (h *javaHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -380,6 +381,10 @@ } } +func (h *javaHandle) Stats() (*cstructs.TaskResourceUsage, error) { + return h.executor.Stats() +} + func (h *javaHandle) run() { ps, err := h.executor.Wait() close(h.doneCh) @@ -399,7 +404,7 @@ h.logger.Printf("[ERR] driver.java: unmounting dev,proc and alloc dirs failed: %v", e) } } - h.waitCh <- &cstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} + h.waitCh <- &dstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} close(h.waitCh) // Remove services diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_parser.go nomad-0.4.0+dfsg/client/driver/logging/syslog_parser.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_parser.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_parser.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,136 +0,0 @@ -// +build !windows - -package logging - -import ( - "fmt" - "log" - "log/syslog" - "strconv" -) - -// Errors related to parsing priority -var ( - ErrPriorityNoStart = fmt.Errorf("No start char found for priority") - ErrPriorityEmpty = fmt.Errorf("Priority field empty") - ErrPriorityNoEnd = fmt.Errorf("No end char found for priority") - ErrPriorityTooShort = fmt.Errorf("Priority field too short") - ErrPriorityTooLong = fmt.Errorf("Priority field too long") - ErrPriorityNonDigit = fmt.Errorf("Non digit found in priority") -) - -// Priority header and ending characters -const ( - PRI_PART_START = '<' - PRI_PART_END = '>' -) - -// SyslogMessage represents a log line received -type SyslogMessage struct { - Message []byte - Severity syslog.Priority -} - -// Priority holds all the priority bits in a syslog log line -type Priority struct { - Pri int - Facility syslog.Priority - Severity syslog.Priority -} - -// DockerLogParser parses a line of log message that the docker daemon ships -type DockerLogParser struct { - logger *log.Logger -} - -// NewDockerLogParser creates a new DockerLogParser -func NewDockerLogParser(logger *log.Logger) *DockerLogParser { - return &DockerLogParser{logger: logger} -} - -// Parse parses a syslog log line -func (d *DockerLogParser) Parse(line []byte) *SyslogMessage { - pri, _, _ := d.parsePriority(line) - msgIdx := d.logContentIndex(line) - return &SyslogMessage{ - Severity: pri.Severity, - Message: line[msgIdx:], - } -} - -// logContentIndex finds out the index of the start index of the content in a -// syslog line -func (d *DockerLogParser) logContentIndex(line []byte) int { - cursor := 0 - numSpace := 0 - for i := 0; i < len(line); i++ { - if line[i] == ' ' { - numSpace += 1 - if numSpace == 1 { - cursor = i - break - } - } - } - for i := cursor; i < len(line); i++ { - if line[i] == ':' { - cursor = i - break - } - } - return cursor + 1 -} - -// parsePriority parses the priority in a syslog message -func (d *DockerLogParser) parsePriority(line []byte) (Priority, int, error) { - cursor := 0 - pri := d.newPriority(0) - if len(line) <= 0 { - return pri, cursor, ErrPriorityEmpty - } - if line[cursor] != PRI_PART_START { - return pri, cursor, ErrPriorityNoStart - } - i := 1 - priDigit := 0 - for i < len(line) { - if i >= 5 { - return pri, cursor, ErrPriorityTooLong - } - c := line[i] - if c == PRI_PART_END { - if i == 1 { - return pri, cursor, ErrPriorityTooShort - } - cursor = i + 1 - return d.newPriority(priDigit), cursor, nil - } - if d.isDigit(c) { - v, e := strconv.Atoi(string(c)) - if e != nil { - return pri, cursor, e - } - priDigit = (priDigit * 10) + v - } else { - return pri, cursor, ErrPriorityNonDigit - } - i++ - } - return pri, cursor, ErrPriorityNoEnd -} - -// isDigit checks if a byte is a numeric char -func (d *DockerLogParser) isDigit(c byte) bool { - return c >= '0' && c <= '9' -} - -// newPriority creates a new default priority -func (d *DockerLogParser) newPriority(p int) Priority { - // The Priority value is calculated by first multiplying the Facility - // number by 8 and then adding the numerical value of the Severity. - return Priority{ - Pri: p, - Facility: syslog.Priority(p / 8), - Severity: syslog.Priority(p % 8), - } -} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_test.go nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_test.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,28 +0,0 @@ -// +build !windows - -package logging - -import ( - "log" - "log/syslog" - "os" - "testing" -) - -func TestLogParser_Priority(t *testing.T) { - line := []byte("<30>2016-02-10T10:16:43-08:00 d-thinkpad docker/e2a1e3ebd3a3[22950]: 1:C 10 Feb 18:16:43.391 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf") - d := NewDockerLogParser(log.New(os.Stdout, "", log.LstdFlags)) - p, _, err := d.parsePriority(line) - if err != nil { - t.Fatalf("got an err: %v", err) - } - if p.Severity != syslog.LOG_INFO { - t.Fatalf("expected serverity: %v, got: %v", syslog.LOG_INFO, p.Severity) - } - - idx := d.logContentIndex(line) - expected := 68 - if idx != expected { - t.Fatalf("expected idx: %v, got: %v", expected, idx) - } -} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_unix.go nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_unix.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,142 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package logging + +import ( + "fmt" + "log" + "log/syslog" + "strconv" +) + +// Errors related to parsing priority +var ( + ErrPriorityNoStart = fmt.Errorf("No start char found for priority") + ErrPriorityEmpty = fmt.Errorf("Priority field empty") + ErrPriorityNoEnd = fmt.Errorf("No end char found for priority") + ErrPriorityTooShort = fmt.Errorf("Priority field too short") + ErrPriorityTooLong = fmt.Errorf("Priority field too long") + ErrPriorityNonDigit = fmt.Errorf("Non digit found in priority") +) + +// Priority header and ending characters +const ( + PRI_PART_START = '<' + PRI_PART_END = '>' +) + +// SyslogMessage represents a log line received +type SyslogMessage struct { + Message []byte + Severity syslog.Priority +} + +// Priority holds all the priority bits in a syslog log line +type Priority struct { + Pri int + Facility syslog.Priority + Severity syslog.Priority +} + +// DockerLogParser parses a line of log message that the docker daemon ships +type DockerLogParser struct { + logger *log.Logger +} + +// NewDockerLogParser creates a new DockerLogParser +func NewDockerLogParser(logger *log.Logger) *DockerLogParser { + return &DockerLogParser{logger: logger} +} + +// Parse parses a syslog log line +func (d *DockerLogParser) Parse(line []byte) *SyslogMessage { + pri, _, _ := d.parsePriority(line) + msgIdx := d.logContentIndex(line) + + // Create a copy of the line so that subsequent Scans do not override the + // message + lineCopy := make([]byte, len(line[msgIdx:])) + copy(lineCopy, line[msgIdx:]) + + return &SyslogMessage{ + Severity: pri.Severity, + Message: lineCopy, + } +} + +// logContentIndex finds out the index of the start index of the content in a +// syslog line +func (d *DockerLogParser) logContentIndex(line []byte) int { + cursor := 0 + numSpace := 0 + for i := 0; i < len(line); i++ { + if line[i] == ' ' { + numSpace += 1 + if numSpace == 1 { + cursor = i + break + } + } + } + for i := cursor; i < len(line); i++ { + if line[i] == ':' { + cursor = i + break + } + } + return cursor + 1 +} + +// parsePriority parses the priority in a syslog message +func (d *DockerLogParser) parsePriority(line []byte) (Priority, int, error) { + cursor := 0 + pri := d.newPriority(0) + if len(line) <= 0 { + return pri, cursor, ErrPriorityEmpty + } + if line[cursor] != PRI_PART_START { + return pri, cursor, ErrPriorityNoStart + } + i := 1 + priDigit := 0 + for i < len(line) { + if i >= 5 { + return pri, cursor, ErrPriorityTooLong + } + c := line[i] + if c == PRI_PART_END { + if i == 1 { + return pri, cursor, ErrPriorityTooShort + } + cursor = i + 1 + return d.newPriority(priDigit), cursor, nil + } + if d.isDigit(c) { + v, e := strconv.Atoi(string(c)) + if e != nil { + return pri, cursor, e + } + priDigit = (priDigit * 10) + v + } else { + return pri, cursor, ErrPriorityNonDigit + } + i++ + } + return pri, cursor, ErrPriorityNoEnd +} + +// isDigit checks if a byte is a numeric char +func (d *DockerLogParser) isDigit(c byte) bool { + return c >= '0' && c <= '9' +} + +// newPriority creates a new default priority +func (d *DockerLogParser) newPriority(p int) Priority { + // The Priority value is calculated by first multiplying the Facility + // number by 8 and then adding the numerical value of the Severity. + return Priority{ + Pri: p, + Facility: syslog.Priority(p / 8), + Severity: syslog.Priority(p % 8), + } +} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_unix_test.go nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_unix_test.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_parser_unix_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_parser_unix_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,28 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package logging + +import ( + "log" + "log/syslog" + "os" + "testing" +) + +func TestLogParser_Priority(t *testing.T) { + line := []byte("<30>2016-02-10T10:16:43-08:00 d-thinkpad docker/e2a1e3ebd3a3[22950]: 1:C 10 Feb 18:16:43.391 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf") + d := NewDockerLogParser(log.New(os.Stdout, "", log.LstdFlags)) + p, _, err := d.parsePriority(line) + if err != nil { + t.Fatalf("got an err: %v", err) + } + if p.Severity != syslog.LOG_INFO { + t.Fatalf("expected serverity: %v, got: %v", syslog.LOG_INFO, p.Severity) + } + + idx := d.logContentIndex(line) + expected := 68 + if idx != expected { + t.Fatalf("expected idx: %v, got: %v", expected, idx) + } +} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_server.go nomad-0.4.0+dfsg/client/driver/logging/syslog_server.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_server.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_server.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,86 +0,0 @@ -// +build !windows - -package logging - -import ( - "bufio" - "log" - "net" - "sync" -) - -// SyslogServer is a server which listens to syslog messages and parses them -type SyslogServer struct { - listener net.Listener - messages chan *SyslogMessage - parser *DockerLogParser - - doneCh chan interface{} - done bool - doneLock sync.Mutex - - logger *log.Logger -} - -// NewSyslogServer creates a new syslog server -func NewSyslogServer(l net.Listener, messages chan *SyslogMessage, logger *log.Logger) *SyslogServer { - parser := NewDockerLogParser(logger) - return &SyslogServer{ - listener: l, - messages: messages, - parser: parser, - logger: logger, - doneCh: make(chan interface{}), - } -} - -// Start starts accepting syslog connections -func (s *SyslogServer) Start() { - for { - select { - case <-s.doneCh: - s.listener.Close() - return - default: - connection, err := s.listener.Accept() - if err != nil { - s.logger.Printf("[ERR] logcollector.server: error in accepting connection: %v", err) - continue - } - go s.read(connection) - } - } -} - -// read reads the bytes from a connection -func (s *SyslogServer) read(connection net.Conn) { - defer connection.Close() - scanner := bufio.NewScanner(bufio.NewReader(connection)) - - for { - select { - case <-s.doneCh: - return - default: - } - if scanner.Scan() { - b := scanner.Bytes() - msg := s.parser.Parse(b) - s.messages <- msg - } else { - return - } - } -} - -// Shutdown shutsdown the syslog server -func (s *SyslogServer) Shutdown() { - s.doneLock.Lock() - s.doneLock.Unlock() - - if !s.done { - close(s.doneCh) - close(s.messages) - s.done = true - } -} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/syslog_server_unix.go nomad-0.4.0+dfsg/client/driver/logging/syslog_server_unix.go --- nomad-0.3.2+dfsg/client/driver/logging/syslog_server_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/syslog_server_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,86 @@ +// +build !windows + +package logging + +import ( + "bufio" + "log" + "net" + "sync" +) + +// SyslogServer is a server which listens to syslog messages and parses them +type SyslogServer struct { + listener net.Listener + messages chan *SyslogMessage + parser *DockerLogParser + + doneCh chan interface{} + done bool + doneLock sync.Mutex + + logger *log.Logger +} + +// NewSyslogServer creates a new syslog server +func NewSyslogServer(l net.Listener, messages chan *SyslogMessage, logger *log.Logger) *SyslogServer { + parser := NewDockerLogParser(logger) + return &SyslogServer{ + listener: l, + messages: messages, + parser: parser, + logger: logger, + doneCh: make(chan interface{}), + } +} + +// Start starts accepting syslog connections +func (s *SyslogServer) Start() { + for { + select { + case <-s.doneCh: + s.listener.Close() + return + default: + connection, err := s.listener.Accept() + if err != nil { + s.logger.Printf("[ERR] logcollector.server: error in accepting connection: %v", err) + continue + } + go s.read(connection) + } + } +} + +// read reads the bytes from a connection +func (s *SyslogServer) read(connection net.Conn) { + defer connection.Close() + scanner := bufio.NewScanner(bufio.NewReader(connection)) + + for { + select { + case <-s.doneCh: + return + default: + } + if scanner.Scan() { + b := scanner.Bytes() + msg := s.parser.Parse(b) + s.messages <- msg + } else { + return + } + } +} + +// Shutdown shutsdown the syslog server +func (s *SyslogServer) Shutdown() { + s.doneLock.Lock() + s.doneLock.Unlock() + + if !s.done { + close(s.doneCh) + close(s.messages) + s.done = true + } +} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/universal_collector.go nomad-0.4.0+dfsg/client/driver/logging/universal_collector.go --- nomad-0.3.2+dfsg/client/driver/logging/universal_collector.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/universal_collector.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,207 +0,0 @@ -// +build !windows - -package logging - -import ( - "fmt" - "io" - "io/ioutil" - "log" - "log/syslog" - "net" - "os" - "runtime" - - "github.com/hashicorp/nomad/client/allocdir" - cstructs "github.com/hashicorp/nomad/client/driver/structs" - "github.com/hashicorp/nomad/nomad/structs" -) - -// LogCollectorContext holds context to configure the syslog server -type LogCollectorContext struct { - // TaskName is the name of the Task - TaskName string - - // AllocDir is the handle to do operations on the alloc dir of - // the task - AllocDir *allocdir.AllocDir - - // LogConfig provides configuration related to log rotation - LogConfig *structs.LogConfig - - // PortUpperBound is the upper bound of the ports that we can use to start - // the syslog server - PortUpperBound uint - - // PortLowerBound is the lower bound of the ports that we can use to start - // the syslog server - PortLowerBound uint -} - -// SyslogCollectorState holds the address and islation information of a launched -// syslog server -type SyslogCollectorState struct { - IsolationConfig *cstructs.IsolationConfig - Addr string -} - -// LogCollector is an interface which allows a driver to launch a log server -// and update log configuration -type LogCollector interface { - LaunchCollector(ctx *LogCollectorContext) (*SyslogCollectorState, error) - Exit() error - UpdateLogConfig(logConfig *structs.LogConfig) error -} - -// SyslogCollector is a LogCollector which starts a syslog server and does -// rotation to incoming stream -type SyslogCollector struct { - addr net.Addr - logConfig *structs.LogConfig - ctx *LogCollectorContext - - lro *FileRotator - lre *FileRotator - server *SyslogServer - syslogChan chan *SyslogMessage - taskDir string - - logger *log.Logger -} - -// NewSyslogCollector returns an implementation of the SyslogCollector -func NewSyslogCollector(logger *log.Logger) *SyslogCollector { - return &SyslogCollector{logger: logger, syslogChan: make(chan *SyslogMessage, 2048)} -} - -// LaunchCollector launches a new syslog server and starts writing log lines to -// files and rotates them -func (s *SyslogCollector) LaunchCollector(ctx *LogCollectorContext) (*SyslogCollectorState, error) { - l, err := s.getListener(ctx.PortLowerBound, ctx.PortUpperBound) - if err != nil { - return nil, err - } - s.logger.Printf("[DEBUG] sylog-server: launching syslog server on addr: %v", l.Addr().String()) - s.ctx = ctx - // configuring the task dir - if err := s.configureTaskDir(); err != nil { - return nil, err - } - - s.server = NewSyslogServer(l, s.syslogChan, s.logger) - go s.server.Start() - logFileSize := int64(ctx.LogConfig.MaxFileSizeMB * 1024 * 1024) - - lro, err := NewFileRotator(ctx.AllocDir.LogDir(), fmt.Sprintf("%v.stdout", ctx.TaskName), - ctx.LogConfig.MaxFiles, logFileSize, s.logger) - - if err != nil { - return nil, err - } - s.lro = lro - - lre, err := NewFileRotator(ctx.AllocDir.LogDir(), fmt.Sprintf("%v.stderr", ctx.TaskName), - ctx.LogConfig.MaxFiles, logFileSize, s.logger) - if err != nil { - return nil, err - } - s.lre = lre - - go s.collectLogs(lre, lro) - syslogAddr := fmt.Sprintf("%s://%s", l.Addr().Network(), l.Addr().String()) - return &SyslogCollectorState{Addr: syslogAddr}, nil -} - -func (s *SyslogCollector) collectLogs(we io.Writer, wo io.Writer) { - for logParts := range s.syslogChan { - // If the severity of the log line is err then we write to stderr - // otherwise all messages go to stdout - if logParts.Severity == syslog.LOG_ERR { - s.lre.Write(logParts.Message) - s.lre.Write([]byte{'\n'}) - } else { - s.lro.Write(logParts.Message) - s.lro.Write([]byte{'\n'}) - } - } -} - -// Exit kills the syslog server -func (s *SyslogCollector) Exit() error { - s.server.Shutdown() - s.lre.Close() - s.lro.Close() - return nil -} - -// UpdateLogConfig updates the log configuration -func (s *SyslogCollector) UpdateLogConfig(logConfig *structs.LogConfig) error { - s.ctx.LogConfig = logConfig - if s.lro == nil { - return fmt.Errorf("log rotator for stdout doesn't exist") - } - s.lro.MaxFiles = logConfig.MaxFiles - s.lro.FileSize = int64(logConfig.MaxFileSizeMB * 1024 * 1024) - - if s.lre == nil { - return fmt.Errorf("log rotator for stderr doesn't exist") - } - s.lre.MaxFiles = logConfig.MaxFiles - s.lre.FileSize = int64(logConfig.MaxFileSizeMB * 1024 * 1024) - return nil -} - -// configureTaskDir sets the task dir in the SyslogCollector -func (s *SyslogCollector) configureTaskDir() error { - taskDir, ok := s.ctx.AllocDir.TaskDirs[s.ctx.TaskName] - if !ok { - return fmt.Errorf("couldn't find task directory for task %v", s.ctx.TaskName) - } - s.taskDir = taskDir - return nil -} - -// getFreePort returns a free port ready to be listened on between upper and -// lower bounds -func (s *SyslogCollector) getListener(lowerBound uint, upperBound uint) (net.Listener, error) { - if runtime.GOOS == "windows" { - return s.listenerTCP(lowerBound, upperBound) - } - - return s.listenerUnix() -} - -// listenerTCP creates a TCP listener using an unused port between an upper and -// lower bound -func (s *SyslogCollector) listenerTCP(lowerBound uint, upperBound uint) (net.Listener, error) { - for i := lowerBound; i <= upperBound; i++ { - addr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("localhost:%v", i)) - if err != nil { - return nil, err - } - l, err := net.ListenTCP("tcp", addr) - if err != nil { - continue - } - return l, nil - } - return nil, fmt.Errorf("No free port found") -} - -// listenerUnix creates a Unix domain socket -func (s *SyslogCollector) listenerUnix() (net.Listener, error) { - f, err := ioutil.TempFile("", "plugin") - if err != nil { - return nil, err - } - path := f.Name() - - if err := f.Close(); err != nil { - return nil, err - } - if err := os.Remove(path); err != nil { - return nil, err - } - - return net.Listen("unix", path) -} diff -Nru nomad-0.3.2+dfsg/client/driver/logging/universal_collector_unix.go nomad-0.4.0+dfsg/client/driver/logging/universal_collector_unix.go --- nomad-0.3.2+dfsg/client/driver/logging/universal_collector_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/logging/universal_collector_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,207 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package logging + +import ( + "fmt" + "io" + "io/ioutil" + "log" + "log/syslog" + "net" + "os" + "runtime" + + "github.com/hashicorp/nomad/client/allocdir" + cstructs "github.com/hashicorp/nomad/client/driver/structs" + "github.com/hashicorp/nomad/nomad/structs" +) + +// LogCollectorContext holds context to configure the syslog server +type LogCollectorContext struct { + // TaskName is the name of the Task + TaskName string + + // AllocDir is the handle to do operations on the alloc dir of + // the task + AllocDir *allocdir.AllocDir + + // LogConfig provides configuration related to log rotation + LogConfig *structs.LogConfig + + // PortUpperBound is the upper bound of the ports that we can use to start + // the syslog server + PortUpperBound uint + + // PortLowerBound is the lower bound of the ports that we can use to start + // the syslog server + PortLowerBound uint +} + +// SyslogCollectorState holds the address and islation information of a launched +// syslog server +type SyslogCollectorState struct { + IsolationConfig *cstructs.IsolationConfig + Addr string +} + +// LogCollector is an interface which allows a driver to launch a log server +// and update log configuration +type LogCollector interface { + LaunchCollector(ctx *LogCollectorContext) (*SyslogCollectorState, error) + Exit() error + UpdateLogConfig(logConfig *structs.LogConfig) error +} + +// SyslogCollector is a LogCollector which starts a syslog server and does +// rotation to incoming stream +type SyslogCollector struct { + addr net.Addr + logConfig *structs.LogConfig + ctx *LogCollectorContext + + lro *FileRotator + lre *FileRotator + server *SyslogServer + syslogChan chan *SyslogMessage + taskDir string + + logger *log.Logger +} + +// NewSyslogCollector returns an implementation of the SyslogCollector +func NewSyslogCollector(logger *log.Logger) *SyslogCollector { + return &SyslogCollector{logger: logger, syslogChan: make(chan *SyslogMessage, 2048)} +} + +// LaunchCollector launches a new syslog server and starts writing log lines to +// files and rotates them +func (s *SyslogCollector) LaunchCollector(ctx *LogCollectorContext) (*SyslogCollectorState, error) { + l, err := s.getListener(ctx.PortLowerBound, ctx.PortUpperBound) + if err != nil { + return nil, err + } + s.logger.Printf("[DEBUG] sylog-server: launching syslog server on addr: %v", l.Addr().String()) + s.ctx = ctx + // configuring the task dir + if err := s.configureTaskDir(); err != nil { + return nil, err + } + + s.server = NewSyslogServer(l, s.syslogChan, s.logger) + go s.server.Start() + logFileSize := int64(ctx.LogConfig.MaxFileSizeMB * 1024 * 1024) + + lro, err := NewFileRotator(ctx.AllocDir.LogDir(), fmt.Sprintf("%v.stdout", ctx.TaskName), + ctx.LogConfig.MaxFiles, logFileSize, s.logger) + + if err != nil { + return nil, err + } + s.lro = lro + + lre, err := NewFileRotator(ctx.AllocDir.LogDir(), fmt.Sprintf("%v.stderr", ctx.TaskName), + ctx.LogConfig.MaxFiles, logFileSize, s.logger) + if err != nil { + return nil, err + } + s.lre = lre + + go s.collectLogs(lre, lro) + syslogAddr := fmt.Sprintf("%s://%s", l.Addr().Network(), l.Addr().String()) + return &SyslogCollectorState{Addr: syslogAddr}, nil +} + +func (s *SyslogCollector) collectLogs(we io.Writer, wo io.Writer) { + for logParts := range s.syslogChan { + // If the severity of the log line is err then we write to stderr + // otherwise all messages go to stdout + if logParts.Severity == syslog.LOG_ERR { + s.lre.Write(logParts.Message) + s.lre.Write([]byte{'\n'}) + } else { + s.lro.Write(logParts.Message) + s.lro.Write([]byte{'\n'}) + } + } +} + +// Exit kills the syslog server +func (s *SyslogCollector) Exit() error { + s.server.Shutdown() + s.lre.Close() + s.lro.Close() + return nil +} + +// UpdateLogConfig updates the log configuration +func (s *SyslogCollector) UpdateLogConfig(logConfig *structs.LogConfig) error { + s.ctx.LogConfig = logConfig + if s.lro == nil { + return fmt.Errorf("log rotator for stdout doesn't exist") + } + s.lro.MaxFiles = logConfig.MaxFiles + s.lro.FileSize = int64(logConfig.MaxFileSizeMB * 1024 * 1024) + + if s.lre == nil { + return fmt.Errorf("log rotator for stderr doesn't exist") + } + s.lre.MaxFiles = logConfig.MaxFiles + s.lre.FileSize = int64(logConfig.MaxFileSizeMB * 1024 * 1024) + return nil +} + +// configureTaskDir sets the task dir in the SyslogCollector +func (s *SyslogCollector) configureTaskDir() error { + taskDir, ok := s.ctx.AllocDir.TaskDirs[s.ctx.TaskName] + if !ok { + return fmt.Errorf("couldn't find task directory for task %v", s.ctx.TaskName) + } + s.taskDir = taskDir + return nil +} + +// getFreePort returns a free port ready to be listened on between upper and +// lower bounds +func (s *SyslogCollector) getListener(lowerBound uint, upperBound uint) (net.Listener, error) { + if runtime.GOOS == "windows" { + return s.listenerTCP(lowerBound, upperBound) + } + + return s.listenerUnix() +} + +// listenerTCP creates a TCP listener using an unused port between an upper and +// lower bound +func (s *SyslogCollector) listenerTCP(lowerBound uint, upperBound uint) (net.Listener, error) { + for i := lowerBound; i <= upperBound; i++ { + addr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("localhost:%v", i)) + if err != nil { + return nil, err + } + l, err := net.ListenTCP("tcp", addr) + if err != nil { + continue + } + return l, nil + } + return nil, fmt.Errorf("No free port found") +} + +// listenerUnix creates a Unix domain socket +func (s *SyslogCollector) listenerUnix() (net.Listener, error) { + f, err := ioutil.TempFile("", "plugin") + if err != nil { + return nil, err + } + path := f.Name() + + if err := f.Close(); err != nil { + return nil, err + } + if err := os.Remove(path); err != nil { + return nil, err + } + + return net.Listen("unix", path) +} diff -Nru nomad-0.3.2+dfsg/client/driver/qemu.go nomad-0.4.0+dfsg/client/driver/qemu.go --- nomad-0.3.2+dfsg/client/driver/qemu.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/qemu.go 2016-06-28 21:26:34.000000000 +0000 @@ -15,8 +15,9 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" "github.com/hashicorp/nomad/client/fingerprint" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" "github.com/hashicorp/nomad/nomad/structs" @@ -57,7 +58,7 @@ maxKillTimeout time.Duration logger *log.Logger version string - waitCh chan *cstructs.WaitResult + waitCh chan *dstructs.WaitResult doneCh chan struct{} } @@ -260,7 +261,7 @@ version: d.config.Version, logger: d.logger, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { @@ -311,7 +312,7 @@ maxKillTimeout: id.MaxKillTimeout, version: id.Version, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { h.logger.Printf("[ERR] driver.qemu: error registering services: %v", err) @@ -337,7 +338,7 @@ return string(data) } -func (h *qemuHandle) WaitCh() chan *cstructs.WaitResult { +func (h *qemuHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -375,6 +376,10 @@ } } +func (h *qemuHandle) Stats() (*cstructs.TaskResourceUsage, error) { + return h.executor.Stats() +} + func (h *qemuHandle) run() { ps, err := h.executor.Wait() if ps.ExitCode == 0 && err != nil { @@ -386,7 +391,7 @@ } } close(h.doneCh) - h.waitCh <- &cstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} + h.waitCh <- &dstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} close(h.waitCh) // Remove services if err := h.executor.DeregisterServices(); err != nil { diff -Nru nomad-0.3.2+dfsg/client/driver/raw_exec.go nomad-0.4.0+dfsg/client/driver/raw_exec.go --- nomad-0.3.2+dfsg/client/driver/raw_exec.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/raw_exec.go 2016-06-28 21:26:34.000000000 +0000 @@ -13,8 +13,9 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" "github.com/hashicorp/nomad/client/fingerprint" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" "github.com/hashicorp/nomad/nomad/structs" @@ -48,7 +49,7 @@ maxKillTimeout time.Duration allocDir *allocdir.AllocDir logger *log.Logger - waitCh chan *cstructs.WaitResult + waitCh chan *dstructs.WaitResult doneCh chan struct{} } @@ -165,7 +166,7 @@ version: d.config.Version, logger: d.logger, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { h.logger.Printf("[ERR] driver.raw_exec: error registering services with consul for task: %q: %v", task.Name, err) @@ -215,7 +216,7 @@ allocDir: id.AllocDir, version: id.Version, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil { h.logger.Printf("[ERR] driver.raw_exec: error registering services with consul: %v", err) @@ -241,7 +242,7 @@ return string(data) } -func (h *rawExecHandle) WaitCh() chan *cstructs.WaitResult { +func (h *rawExecHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -277,6 +278,10 @@ } } +func (h *rawExecHandle) Stats() (*cstructs.TaskResourceUsage, error) { + return h.executor.Stats() +} + func (h *rawExecHandle) run() { ps, err := h.executor.Wait() close(h.doneCh) @@ -288,7 +293,7 @@ h.logger.Printf("[ERR] driver.raw_exec: unmounting dev,proc and alloc dirs failed: %v", e) } } - h.waitCh <- &cstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} + h.waitCh <- &dstructs.WaitResult{ExitCode: ps.ExitCode, Signal: ps.Signal, Err: err} close(h.waitCh) // Remove services if err := h.executor.DeregisterServices(); err != nil { diff -Nru nomad-0.3.2+dfsg/client/driver/rkt.go nomad-0.4.0+dfsg/client/driver/rkt.go --- nomad-0.3.2+dfsg/client/driver/rkt.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/rkt.go 2016-06-28 21:26:34.000000000 +0000 @@ -19,8 +19,9 @@ "github.com/hashicorp/nomad/client/allocdir" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver/executor" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" "github.com/hashicorp/nomad/client/fingerprint" + cstructs "github.com/hashicorp/nomad/client/structs" "github.com/hashicorp/nomad/helper/discover" "github.com/hashicorp/nomad/helper/fields" "github.com/hashicorp/nomad/nomad/structs" @@ -70,7 +71,7 @@ logger *log.Logger killTimeout time.Duration maxKillTimeout time.Duration - waitCh chan *cstructs.WaitResult + waitCh chan *dstructs.WaitResult doneCh chan struct{} } @@ -207,12 +208,12 @@ cmdArgs = append(cmdArgs, "--insecure-options=all") } - // Inject enviornment variables + // Inject environment variables for k, v := range d.taskEnv.EnvMap() { cmdArgs = append(cmdArgs, fmt.Sprintf("--set-env=%v=%v", k, v)) } - // Check if the user has overriden the exec command. + // Check if the user has overridden the exec command. if execCmd, ok := task.Config["command"]; ok { cmdArgs = append(cmdArgs, fmt.Sprintf("--exec=%v", execCmd)) } @@ -308,7 +309,7 @@ killTimeout: GetKillTimeout(task.KillTimeout, maxKill), maxKillTimeout: maxKill, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if h.executor.SyncServices(consulContext(d.config, "")); err != nil { h.logger.Printf("[ERR] driver.rkt: error registering services for task: %q: %v", task.Name, err) @@ -349,7 +350,7 @@ killTimeout: id.KillTimeout, maxKillTimeout: id.MaxKillTimeout, doneCh: make(chan struct{}), - waitCh: make(chan *cstructs.WaitResult, 1), + waitCh: make(chan *dstructs.WaitResult, 1), } if h.executor.SyncServices(consulContext(d.config, "")); err != nil { h.logger.Printf("[ERR] driver.rkt: error registering services: %v", err) @@ -374,7 +375,7 @@ return fmt.Sprintf("Rkt:%s", string(data)) } -func (h *rktHandle) WaitCh() chan *cstructs.WaitResult { +func (h *rktHandle) WaitCh() chan *dstructs.WaitResult { return h.waitCh } @@ -399,6 +400,10 @@ } } +func (h *rktHandle) Stats() (*cstructs.TaskResourceUsage, error) { + return nil, fmt.Errorf("stats not implemented for rkt") +} + func (h *rktHandle) run() { ps, err := h.executor.Wait() close(h.doneCh) @@ -410,7 +415,7 @@ h.logger.Printf("[ERROR] driver.rkt: unmounting dev,proc and alloc dirs failed: %v", e) } } - h.waitCh <- cstructs.NewWaitResult(ps.ExitCode, 0, err) + h.waitCh <- dstructs.NewWaitResult(ps.ExitCode, 0, err) close(h.waitCh) // Remove services if err := h.executor.DeregisterServices(); err != nil { diff -Nru nomad-0.3.2+dfsg/client/driver/structs/structs.go nomad-0.4.0+dfsg/client/driver/structs/structs.go --- nomad-0.3.2+dfsg/client/driver/structs/structs.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/structs/structs.go 2016-06-28 21:26:34.000000000 +0000 @@ -68,8 +68,19 @@ // CheckResult encapsulates the result of a check type CheckResult struct { - ExitCode int - Output string + + // ExitCode is the exit code of the check + ExitCode int + + // Output is the output of the check script + Output string + + // Timestamp is the time at which the check was executed Timestamp time.Time - Err error + + // Duration is the time it took the check to run + Duration time.Duration + + // Err is the error that a check returned + Err error } diff -Nru nomad-0.3.2+dfsg/client/driver/utils.go nomad-0.4.0+dfsg/client/driver/utils.go --- nomad-0.3.2+dfsg/client/driver/utils.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/utils.go 2016-06-28 21:26:34.000000000 +0000 @@ -12,7 +12,6 @@ "github.com/hashicorp/go-multierror" "github.com/hashicorp/go-plugin" "github.com/hashicorp/nomad/client/config" - "github.com/hashicorp/nomad/client/consul" "github.com/hashicorp/nomad/client/driver/executor" "github.com/hashicorp/nomad/client/driver/logging" cstructs "github.com/hashicorp/nomad/client/driver/structs" @@ -73,18 +72,8 @@ } func consulContext(clientConfig *config.Config, containerID string) *executor.ConsulContext { - cfg := consul.ConsulConfig{ - Addr: clientConfig.ReadDefault("consul.address", "127.0.0.1:8500"), - Token: clientConfig.Read("consul.token"), - Auth: clientConfig.Read("consul.auth"), - EnableSSL: clientConfig.ReadBoolDefault("consul.ssl", false), - VerifySSL: clientConfig.ReadBoolDefault("consul.verifyssl", true), - CAFile: clientConfig.Read("consul.tls_ca_file"), - CertFile: clientConfig.Read("consul.tls_cert_file"), - KeyFile: clientConfig.Read("consul.tls_key_file"), - } return &executor.ConsulContext{ - ConsulConfig: &cfg, + ConsulConfig: clientConfig.ConsulConfig, ContainerID: containerID, DockerEndpoint: clientConfig.Read("docker.endpoint"), TLSCa: clientConfig.Read("docker.tls.ca"), diff -Nru nomad-0.3.2+dfsg/client/driver/utils_linux.go nomad-0.4.0+dfsg/client/driver/utils_linux.go --- nomad-0.3.2+dfsg/client/driver/utils_linux.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/utils_linux.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,16 +0,0 @@ -package driver - -import ( - "os/exec" - "syscall" -) - -// isolateCommand sets the setsid flag in exec.Cmd to true so that the process -// becomes the process leader in a new session and doesn't receive signals that -// are sent to the parent process. -func isolateCommand(cmd *exec.Cmd) { - if cmd.SysProcAttr == nil { - cmd.SysProcAttr = &syscall.SysProcAttr{} - } - cmd.SysProcAttr.Setsid = true -} diff -Nru nomad-0.3.2+dfsg/client/driver/utils_posix.go nomad-0.4.0+dfsg/client/driver/utils_posix.go --- nomad-0.3.2+dfsg/client/driver/utils_posix.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/utils_posix.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,18 +0,0 @@ -// +build !linux,!windows - -package driver - -import ( - "os/exec" - "syscall" -) - -// isolateCommand sets the setsid flag in exec.Cmd to true so that the process -// becomes the process leader in a new session and doesn't receive signals that -// are sent to the parent process. -func isolateCommand(cmd *exec.Cmd) { - if cmd.SysProcAttr == nil { - cmd.SysProcAttr = &syscall.SysProcAttr{} - } - cmd.SysProcAttr.Setsid = true -} diff -Nru nomad-0.3.2+dfsg/client/driver/utils_unix.go nomad-0.4.0+dfsg/client/driver/utils_unix.go --- nomad-0.3.2+dfsg/client/driver/utils_unix.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/driver/utils_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,18 @@ +// +build darwin dragonfly freebsd linux netbsd openbsd solaris + +package driver + +import ( + "os/exec" + "syscall" +) + +// isolateCommand sets the setsid flag in exec.Cmd to true so that the process +// becomes the process leader in a new session and doesn't receive signals that +// are sent to the parent process. +func isolateCommand(cmd *exec.Cmd) { + if cmd.SysProcAttr == nil { + cmd.SysProcAttr = &syscall.SysProcAttr{} + } + cmd.SysProcAttr.Setsid = true +} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/cgroup_default.go nomad-0.4.0+dfsg/client/fingerprint/cgroup_default.go --- nomad-0.3.2+dfsg/client/fingerprint/cgroup_default.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/cgroup_default.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,18 @@ +// +build !linux + +package fingerprint + +import ( + client "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/nomad/structs" +) + +// FindCgroupMountpointDir returns an empty path on non-Linux systems +func FindCgroupMountpointDir() (string, error) { + return "", nil +} + +// Fingerprint tries to find a valid cgroup moint point +func (f *CGroupFingerprint) Fingerprint(cfg *client.Config, node *structs.Node) (bool, error) { + return false, nil +} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/cgroup.go nomad-0.4.0+dfsg/client/fingerprint/cgroup.go --- nomad-0.3.2+dfsg/client/fingerprint/cgroup.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/cgroup.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,11 +1,9 @@ package fingerprint import ( - "fmt" "log" "time" - client "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/nomad/structs" ) @@ -47,35 +45,6 @@ return f } -// Fingerprint tries to find a valid cgroup moint point -func (f *CGroupFingerprint) Fingerprint(cfg *client.Config, node *structs.Node) (bool, error) { - mount, err := f.mountPointDetector.MountPoint() - if err != nil { - f.clearCGroupAttributes(node) - return false, fmt.Errorf("Failed to discover cgroup mount point: %s", err) - } - - // Check if a cgroup mount point was found - if mount == "" { - // Clear any attributes from the previous fingerprint. - f.clearCGroupAttributes(node) - - if f.lastState == cgroupAvailable { - f.logger.Printf("[INFO] fingerprint.cgroups: cgroups are unavailable") - } - f.lastState = cgroupUnavailable - return true, nil - } - - node.Attributes["unique.cgroup.mountpoint"] = mount - - if f.lastState == cgroupUnavailable { - f.logger.Printf("[INFO] fingerprint.cgroups: cgroups are available") - } - f.lastState = cgroupAvailable - return true, nil -} - // clearCGroupAttributes clears any node attributes related to cgroups that might // have been set in a previous fingerprint run. func (f *CGroupFingerprint) clearCGroupAttributes(n *structs.Node) { diff -Nru nomad-0.3.2+dfsg/client/fingerprint/cgroup_linux.go nomad-0.4.0+dfsg/client/fingerprint/cgroup_linux.go --- nomad-0.3.2+dfsg/client/fingerprint/cgroup_linux.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/cgroup_linux.go 2016-06-28 21:26:34.000000000 +0000 @@ -3,6 +3,10 @@ package fingerprint import ( + "fmt" + + client "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/nomad/structs" "github.com/opencontainers/runc/libcontainer/cgroups" ) @@ -22,3 +26,32 @@ } return mount, nil } + +// Fingerprint tries to find a valid cgroup moint point +func (f *CGroupFingerprint) Fingerprint(cfg *client.Config, node *structs.Node) (bool, error) { + mount, err := f.mountPointDetector.MountPoint() + if err != nil { + f.clearCGroupAttributes(node) + return false, fmt.Errorf("Failed to discover cgroup mount point: %s", err) + } + + // Check if a cgroup mount point was found + if mount == "" { + // Clear any attributes from the previous fingerprint. + f.clearCGroupAttributes(node) + + if f.lastState == cgroupAvailable { + f.logger.Printf("[INFO] fingerprint.cgroups: cgroups are unavailable") + } + f.lastState = cgroupUnavailable + return true, nil + } + + node.Attributes["unique.cgroup.mountpoint"] = mount + + if f.lastState == cgroupUnavailable { + f.logger.Printf("[INFO] fingerprint.cgroups: cgroups are available") + } + f.lastState = cgroupAvailable + return true, nil +} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/cgroup_universal.go nomad-0.4.0+dfsg/client/fingerprint/cgroup_universal.go --- nomad-0.3.2+dfsg/client/fingerprint/cgroup_universal.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/cgroup_universal.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,8 +0,0 @@ -// +build !linux - -package fingerprint - -// FindCgroupMountpointDir returns an empty path on non-Linux systems -func FindCgroupMountpointDir() (string, error) { - return "", nil -} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/consul.go nomad-0.4.0+dfsg/client/fingerprint/consul.go --- nomad-0.3.2+dfsg/client/fingerprint/consul.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/consul.go 2016-06-28 21:26:34.000000000 +0000 @@ -38,16 +38,11 @@ // Only create the client once to avoid creating too many connections to // Consul. if f.client == nil { - address := config.ReadDefault("consul.address", "127.0.0.1:8500") - timeout, err := time.ParseDuration(config.ReadDefault("consul.timeout", "10ms")) + consulConfig, err := config.ConsulConfig.ApiConfig() if err != nil { - return false, fmt.Errorf("Unable to parse consul.timeout: %s", err) + return false, fmt.Errorf("Failed to initialize the Consul client config: %v", err) } - consulConfig := consul.DefaultConfig() - consulConfig.Address = address - consulConfig.HttpClient.Timeout = timeout - f.client, err = consul.NewClient(consulConfig) if err != nil { return false, fmt.Errorf("Failed to initialize consul client: %s", err) diff -Nru nomad-0.3.2+dfsg/client/fingerprint/consul_test.go nomad-0.4.0+dfsg/client/fingerprint/consul_test.go --- nomad-0.3.2+dfsg/client/fingerprint/consul_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/consul_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,6 +4,7 @@ "fmt" "net/http" "net/http/httptest" + "os" "testing" "github.com/hashicorp/nomad/client/config" @@ -11,6 +12,11 @@ ) func TestConsulFingerprint(t *testing.T) { + addr := os.Getenv("CONSUL_HTTP_ADDR") + if addr == "" { + t.Skipf("No consul process running, skipping test") + } + fp := NewConsulFingerprint(testLogger()) node := &structs.Node{ Attributes: make(map[string]string), @@ -22,14 +28,9 @@ })) defer ts.Close() - consulConfig := &config.Config{ - Options: map[string]string{ - // Split off "http://" - "consul.address": ts.URL[7:], - }, - } + config := config.DefaultConfig() - ok, err := fp.Fingerprint(consulConfig, node) + ok, err := fp.Fingerprint(config, node) if err != nil { t.Fatalf("Failed to fingerprint: %s", err) } @@ -43,9 +44,8 @@ assertNodeAttributeContains(t, node, "unique.consul.name") assertNodeAttributeContains(t, node, "consul.datacenter") - expectedLink := "vagrant.consul2" - if node.Links["consul"] != expectedLink { - t.Errorf("Expected consul link: %s\nFound links: %#v", expectedLink, node.Links) + if _, ok := node.Links["consul"]; !ok { + t.Errorf("Expected a link to consul, none found") } } @@ -151,9 +151,7 @@ "expect": "3", "port": "8300", "role": "consul", - "vsn": "2", - "vsn_max": "2", - "vsn_min": "1" + "vsn": "2" }, "Status": 1, "ProtocolMin": 1, diff -Nru nomad-0.3.2+dfsg/client/fingerprint/cpu.go nomad-0.4.0+dfsg/client/fingerprint/cpu.go --- nomad-0.3.2+dfsg/client/fingerprint/cpu.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/cpu.go 2016-06-28 21:26:34.000000000 +0000 @@ -5,8 +5,8 @@ "log" "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/helper/stats" "github.com/hashicorp/nomad/nomad/structs" - "github.com/shirou/gopsutil/cpu" ) // CPUFingerprint is used to fingerprint the CPU @@ -22,52 +22,32 @@ } func (f *CPUFingerprint) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { - cpuInfo, err := cpu.CPUInfo() - if err != nil { - f.logger.Println("[WARN] Error reading CPU information:", err) + if err := stats.Init(); err != nil { + f.logger.Printf("[FATAL] fingerprint.cpu: unable to obtain CPU information: %v", err) return false, err } - var numCores int32 - var mhz float64 - var modelName string - - // Assume all CPUs found have same Model. Log if not. - // If CPUInfo() returns nil above, this loop is still safe - for _, c := range cpuInfo { - numCores += c.Cores - mhz += c.Mhz - - if modelName != "" && modelName != c.ModelName { - f.logger.Println("[WARN] Found different model names in the same CPU information. Recording last found") - } - modelName = c.ModelName + modelName := stats.CPUModelName() + if modelName != "" { + node.Attributes["cpu.modelname"] = modelName } - // Get average CPU frequency - mhz /= float64(len(cpuInfo)) - if mhz > 0 { - node.Attributes["cpu.frequency"] = fmt.Sprintf("%.6f", mhz) - } + mhz := stats.CPUMHzPerCore() + node.Attributes["cpu.frequency"] = fmt.Sprintf("%.0f", mhz) + f.logger.Printf("[DEBUG] fingerprint.cpu: frequency: %.0f MHz", mhz) - if numCores > 0 { - node.Attributes["cpu.numcores"] = fmt.Sprintf("%d", numCores) - } + numCores := stats.CPUNumCores() + node.Attributes["cpu.numcores"] = fmt.Sprintf("%d", numCores) + f.logger.Printf("[DEBUG] fingerprint.cpu: core count: %d", numCores) - if mhz > 0 && numCores > 0 { - tc := float64(numCores) * mhz - node.Attributes["cpu.totalcompute"] = fmt.Sprintf("%.6f", tc) - - if node.Resources == nil { - node.Resources = &structs.Resources{} - } + tt := stats.TotalTicksAvailable() + node.Attributes["cpu.totalcompute"] = fmt.Sprintf("%.0f", tt) - node.Resources.CPU = int(tc) + if node.Resources == nil { + node.Resources = &structs.Resources{} } - if modelName != "" { - node.Attributes["cpu.modelname"] = modelName - } + node.Resources.CPU = int(tt) return true, nil } diff -Nru nomad-0.3.2+dfsg/client/fingerprint/env_aws.go nomad-0.4.0+dfsg/client/fingerprint/env_aws.go --- nomad-0.3.2+dfsg/client/fingerprint/env_aws.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/env_aws.go 2016-06-28 21:26:34.000000000 +0000 @@ -209,7 +209,7 @@ } match, err := regexp.MatchString("ami-*", string(instanceID)) - if !match { + if err != nil || !match { return false } diff -Nru nomad-0.3.2+dfsg/client/fingerprint/env_gce.go nomad-0.4.0+dfsg/client/fingerprint/env_gce.go --- nomad-0.3.2+dfsg/client/fingerprint/env_gce.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/env_gce.go 2016-06-28 21:26:34.000000000 +0000 @@ -96,7 +96,7 @@ res, err := f.client.Do(req) if err != nil || res.StatusCode != http.StatusOK { - f.logger.Printf("[WARN] fingerprint.env_gce: Could not read value for attribute %q", attribute) + f.logger.Printf("[DEBUG] fingerprint.env_gce: Could not read value for attribute %q", attribute) return "", err } @@ -262,7 +262,7 @@ } match, err := regexp.MatchString("projects/.+/machineTypes/.+", machineType) - if !match { + if err != nil || !match { return false } diff -Nru nomad-0.3.2+dfsg/client/fingerprint/fingerprint.go nomad-0.4.0+dfsg/client/fingerprint/fingerprint.go --- nomad-0.3.2+dfsg/client/fingerprint/fingerprint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/fingerprint.go 2016-06-28 21:26:34.000000000 +0000 @@ -76,7 +76,7 @@ Periodic() (bool, time.Duration) } -// StaticFingerprinter can be embeded in a struct that has a Fingerprint method +// StaticFingerprinter can be embedded in a struct that has a Fingerprint method // to make it non-periodic. type StaticFingerprinter struct{} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/host.go nomad-0.4.0+dfsg/client/fingerprint/host.go --- nomad-0.3.2+dfsg/client/fingerprint/host.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/host.go 2016-06-28 21:26:34.000000000 +0000 @@ -25,7 +25,7 @@ } func (f *HostFingerprint) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) { - hostInfo, err := host.HostInfo() + hostInfo, err := host.Info() if err != nil { f.logger.Println("[WARN] Error retrieving host information: ", err) return false, err @@ -45,7 +45,7 @@ node.Attributes["kernel.version"] = strings.Trim(string(out), "\n") } - node.Attributes["hostname"] = hostInfo.Hostname + node.Attributes["unique.hostname"] = hostInfo.Hostname return true, nil } diff -Nru nomad-0.3.2+dfsg/client/fingerprint/host_test.go nomad-0.4.0+dfsg/client/fingerprint/host_test.go --- nomad-0.3.2+dfsg/client/fingerprint/host_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/host_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -21,7 +21,7 @@ } // Host info - for _, key := range []string{"os.name", "os.version", "hostname", "kernel.name"} { + for _, key := range []string{"os.name", "os.version", "unique.hostname", "kernel.name"} { assertNodeAttributeContains(t, node, key) } } diff -Nru nomad-0.3.2+dfsg/client/fingerprint/network_default.go nomad-0.4.0+dfsg/client/fingerprint/network_default.go --- nomad-0.3.2+dfsg/client/fingerprint/network_default.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/network_default.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,8 @@ +// +build !linux + +package fingerprint + +// linkSpeed returns the default link speed +func (f *NetworkFingerprint) linkSpeed(device string) int { + return 0 +} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/network.go nomad-0.4.0+dfsg/client/fingerprint/network.go --- nomad-0.3.2+dfsg/client/fingerprint/network.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/network.go 2016-06-28 21:26:34.000000000 +0000 @@ -3,13 +3,8 @@ import ( "errors" "fmt" - "io/ioutil" "log" "net" - "os/exec" - "regexp" - "strconv" - "strings" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/nomad/structs" @@ -78,10 +73,11 @@ newNetwork.IP = ip newNetwork.CIDR = newNetwork.IP + "/32" - f.logger.Printf("[DEBUG] fingerprint.network: Detected interface %v with IP %v during fingerprinting", intf.Name, ip) + f.logger.Printf("[DEBUG] fingerprint.network: Detected interface %v with IP %v during fingerprinting", intf.Name, ip) if throughput := f.linkSpeed(intf.Name); throughput > 0 { newNetwork.MBits = throughput + f.logger.Printf("[DEBUG] fingerprint.network: link speed for %v set to %v", intf.Name, newNetwork.MBits) } else { f.logger.Printf("[DEBUG] fingerprint.network: Unable to read link speed; setting to default %v", cfg.NetworkSpeed) newNetwork.MBits = cfg.NetworkSpeed @@ -97,74 +93,6 @@ return true, nil } -// linkSpeed returns link speed in Mb/s, or 0 when unable to determine it. -func (f *NetworkFingerprint) linkSpeed(device string) int { - // Use LookPath to find the ethtool in the systems $PATH - // If it's not found or otherwise errors, LookPath returns and empty string - // and an error we can ignore for our purposes - ethtoolPath, _ := exec.LookPath("ethtool") - if ethtoolPath != "" { - if speed := f.linkSpeedEthtool(ethtoolPath, device); speed > 0 { - return speed - } - } - - // Fall back on checking a system file for link speed. - return f.linkSpeedSys(device) -} - -// linkSpeedSys parses link speed in Mb/s from /sys. -func (f *NetworkFingerprint) linkSpeedSys(device string) int { - path := fmt.Sprintf("/sys/class/net/%s/speed", device) - - // Read contents of the device/speed file - content, err := ioutil.ReadFile(path) - if err != nil { - f.logger.Printf("[WARN] fingerprint.network: Unable to read link speed from %s", path) - return 0 - } - - lines := strings.Split(string(content), "\n") - mbs, err := strconv.Atoi(lines[0]) - if err != nil || mbs <= 0 { - f.logger.Printf("[WARN] fingerprint.network: Unable to parse link speed from %s", path) - return 0 - } - - return mbs -} - -// linkSpeedEthtool determines link speed in Mb/s with 'ethtool'. -func (f *NetworkFingerprint) linkSpeedEthtool(path, device string) int { - outBytes, err := exec.Command(path, device).Output() - if err != nil { - f.logger.Printf("[WARN] fingerprint.network: Error calling ethtool (%s %s): %v", path, device, err) - return 0 - } - - output := strings.TrimSpace(string(outBytes)) - re := regexp.MustCompile("Speed: [0-9]+[a-zA-Z]+/s") - m := re.FindString(output) - if m == "" { - // no matches found, output may be in a different format - f.logger.Printf("[WARN] fingerprint.network: Unable to parse Speed in output of '%s %s'", path, device) - return 0 - } - - // Split and trim the Mb/s unit from the string output - args := strings.Split(m, ": ") - raw := strings.TrimSuffix(args[1], "Mb/s") - - // convert to Mb/s - mbs, err := strconv.Atoi(raw) - if err != nil || mbs <= 0 { - f.logger.Printf("[WARN] fingerprint.network: Unable to parse Mb/s in output of '%s %s'", path, device) - return 0 - } - - return mbs -} - // Gets the ipv4 addr for a network interface func (f *NetworkFingerprint) ipAddress(intf *net.Interface) (string, error) { var addrs []net.Addr diff -Nru nomad-0.3.2+dfsg/client/fingerprint/network_linux.go nomad-0.4.0+dfsg/client/fingerprint/network_linux.go --- nomad-0.3.2+dfsg/client/fingerprint/network_linux.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/network_linux.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,78 @@ +package fingerprint + +import ( + "fmt" + "io/ioutil" + "os/exec" + "regexp" + "strconv" + "strings" +) + +// linkSpeedSys parses link speed in Mb/s from /sys. +func (f *NetworkFingerprint) linkSpeedSys(device string) int { + path := fmt.Sprintf("/sys/class/net/%s/speed", device) + + // Read contents of the device/speed file + content, err := ioutil.ReadFile(path) + if err != nil { + f.logger.Printf("[DEBUG] fingerprint.network: Unable to read link speed from %s", path) + return 0 + } + + lines := strings.Split(string(content), "\n") + mbs, err := strconv.Atoi(lines[0]) + if err != nil || mbs <= 0 { + f.logger.Printf("[DEBUG] fingerprint.network: Unable to parse link speed from %s", path) + return 0 + } + + return mbs +} + +// linkSpeed returns link speed in Mb/s, or 0 when unable to determine it. +func (f *NetworkFingerprint) linkSpeed(device string) int { + // Use LookPath to find the ethtool in the systems $PATH + // If it's not found or otherwise errors, LookPath returns and empty string + // and an error we can ignore for our purposes + ethtoolPath, _ := exec.LookPath("ethtool") + if ethtoolPath != "" { + if speed := f.linkSpeedEthtool(ethtoolPath, device); speed > 0 { + return speed + } + } + + // Fall back on checking a system file for link speed. + return f.linkSpeedSys(device) +} + +// linkSpeedEthtool determines link speed in Mb/s with 'ethtool'. +func (f *NetworkFingerprint) linkSpeedEthtool(path, device string) int { + outBytes, err := exec.Command(path, device).Output() + if err != nil { + f.logger.Printf("[WARN] fingerprint.network: Error calling ethtool (%s %s): %v", path, device, err) + return 0 + } + + output := strings.TrimSpace(string(outBytes)) + re := regexp.MustCompile("Speed: [0-9]+[a-zA-Z]+/s") + m := re.FindString(output) + if m == "" { + // no matches found, output may be in a different format + f.logger.Printf("[WARN] fingerprint.network: Unable to parse Speed in output of '%s %s'", path, device) + return 0 + } + + // Split and trim the Mb/s unit from the string output + args := strings.Split(m, ": ") + raw := strings.TrimSuffix(args[1], "Mb/s") + + // convert to Mb/s + mbs, err := strconv.Atoi(raw) + if err != nil || mbs <= 0 { + f.logger.Printf("[WARN] fingerprint.network: Unable to parse Mb/s in output of '%s %s'", path, device) + return 0 + } + + return mbs +} diff -Nru nomad-0.3.2+dfsg/client/fingerprint/storage_unix.go nomad-0.4.0+dfsg/client/fingerprint/storage_unix.go --- nomad-0.3.2+dfsg/client/fingerprint/storage_unix.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/fingerprint/storage_unix.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,4 +1,4 @@ -// +build darwin linux +// +build darwin dragonfly freebsd linux netbsd openbsd solaris package fingerprint diff -Nru nomad-0.3.2+dfsg/client/getter/getter_test.go nomad-0.4.0+dfsg/client/getter/getter_test.go --- nomad-0.3.2+dfsg/client/getter/getter_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/getter/getter_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -173,7 +173,7 @@ defer ts.Close() // Create a temp directory to download into and create some of the same - // files that exist in the artifact to ensure they are overriden + // files that exist in the artifact to ensure they are overridden taskDir, err := ioutil.TempDir("", "nomad-test") if err != nil { t.Fatalf("failed to make temp directory: %v", err) diff -Nru nomad-0.3.2+dfsg/client/rpcproxy/rpcproxy.go nomad-0.4.0+dfsg/client/rpcproxy/rpcproxy.go --- nomad-0.3.2+dfsg/client/rpcproxy/rpcproxy.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/rpcproxy/rpcproxy.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,779 @@ +// Package rpcproxy provides a proxy interface to Nomad Servers. The +// RPCProxy periodically shuffles which server a Nomad Client communicates +// with in order to redistribute load across Nomad Servers. Nomad Servers +// that fail an RPC request are automatically cycled to the end of the list +// until the server list is reshuffled. +// +// The rpcproxy package does not provide any external API guarantees and +// should be called only by `hashicorp/nomad`. +package rpcproxy + +import ( + "fmt" + "log" + "math/rand" + "strings" + "sync" + "sync/atomic" + "time" + + "github.com/hashicorp/consul/lib" + "github.com/hashicorp/nomad/nomad/structs" +) + +const ( + // clientRPCJitterFraction determines the amount of jitter added to + // clientRPCMinReuseDuration before a connection is expired and a new + // connection is established in order to rebalance load across Nomad + // servers. The cluster-wide number of connections per second from + // rebalancing is applied after this jitter to ensure the CPU impact + // is always finite. See newRebalanceConnsPerSecPerServer's comment + // for additional commentary. + // + // For example, in a 10K Nomad cluster with 5x servers, this default + // averages out to ~13 new connections from rebalancing per server + // per second. + clientRPCJitterFraction = 2 + + // clientRPCMinReuseDuration controls the minimum amount of time RPC + // queries are sent over an established connection to a single server + clientRPCMinReuseDuration = 600 * time.Second + + // Limit the number of new connections a server receives per second + // for connection rebalancing. This limit caps the load caused by + // continual rebalancing efforts when a cluster is in equilibrium. A + // lower value comes at the cost of increased recovery time after a + // partition. This parameter begins to take effect when there are + // more than ~48K clients querying 5x servers or at lower server + // counts when there is a partition. + // + // For example, in a 100K Nomad cluster with 5x servers, it will take + // ~5min for all servers to rebalance their connections. If 99,995 + // agents are in the minority talking to only one server, it will + // take ~26min for all servers to rebalance. A 10K cluster in the + // same scenario will take ~2.6min to rebalance. + newRebalanceConnsPerSecPerServer = 64 + + // rpcAPIMismatchLogRate determines the rate at which log entries are + // emitted when the client and server's API versions are mismatched. + rpcAPIMismatchLogRate = 3 * time.Hour +) + +// NomadConfigInfo is an interface wrapper around this Nomad Agent's +// configuration to prevents a cyclic import dependency. +type NomadConfigInfo interface { + Datacenter() string + RPCMajorVersion() int + RPCMinorVersion() int + Region() string +} + +// Pinger is an interface wrapping client.ConnPool to prevent a +// cyclic import dependency +type Pinger interface { + PingNomadServer(region string, apiMajorVersion int, s *ServerEndpoint) (bool, error) +} + +// serverList is an array of Nomad Servers. The first server in the list is +// the active server. +// +// NOTE(sean@): We are explicitly relying on the fact that serverList will be +// copied onto the stack by atomic.Value. Please keep this structure light. +type serverList struct { + L []*ServerEndpoint +} + +// RPCProxy is the manager type responsible for returning and managing Nomad +// addresses. +type RPCProxy struct { + // activatedList manages the list of Nomad Servers that are eligible + // to be queried by the Client agent. + activatedList atomic.Value + activatedListLock sync.Mutex + + // primaryServers is a list of servers found in the last heartbeat. + // primaryServers are periodically reshuffled. Covered by + // serverListLock. + primaryServers serverList + + // backupServers is a list of fallback servers. These servers are + // appended to the RPCProxy's serverList, but are never shuffled with + // the list of servers discovered via the Nomad heartbeat. Covered + // by serverListLock. + backupServers serverList + + // serverListLock covers both backupServers and primaryServers. If + // it is necessary to hold serverListLock and listLock, obtain an + // exclusive lock on serverListLock before listLock. + serverListLock sync.RWMutex + + leaderAddr string + numNodes int + + // rebalanceTimer controls the duration of the rebalance interval + rebalanceTimer *time.Timer + + // shutdownCh is a copy of the channel in nomad.Client + shutdownCh chan struct{} + + logger *log.Logger + + configInfo NomadConfigInfo + + // rpcAPIMismatchThrottle regulates the rate at which warning + // messages are emitted in the event of an API mismatch between the + // clients and servers. + rpcAPIMismatchThrottle map[string]time.Time + + // connPoolPinger is used to test the health of a server in the + // connection pool. Pinger is an interface that wraps + // client.ConnPool. + connPoolPinger Pinger +} + +// NewRPCProxy is the only way to safely create a new RPCProxy. +func NewRPCProxy(logger *log.Logger, shutdownCh chan struct{}, configInfo NomadConfigInfo, connPoolPinger Pinger) *RPCProxy { + p := &RPCProxy{ + logger: logger, + configInfo: configInfo, // can't pass *nomad.Client: import cycle + connPoolPinger: connPoolPinger, // can't pass *nomad.ConnPool: import cycle + rebalanceTimer: time.NewTimer(clientRPCMinReuseDuration), + shutdownCh: shutdownCh, + } + + l := serverList{} + l.L = make([]*ServerEndpoint, 0) + p.saveServerList(l) + return p +} + +// activateEndpoint adds an endpoint to the RPCProxy's active serverList. +// Returns true if the server was added, returns false if the server already +// existed in the RPCProxy's serverList. +func (p *RPCProxy) activateEndpoint(s *ServerEndpoint) bool { + l := p.getServerList() + + // Check if this server is known + found := false + for idx, existing := range l.L { + if existing.Name == s.Name { + newServers := make([]*ServerEndpoint, len(l.L)) + copy(newServers, l.L) + + // Overwrite the existing server details in order to + // possibly update metadata (e.g. server version) + newServers[idx] = s + + l.L = newServers + found = true + break + } + } + + // Add to the list if not known + if !found { + newServers := make([]*ServerEndpoint, len(l.L), len(l.L)+1) + copy(newServers, l.L) + newServers = append(newServers, s) + l.L = newServers + } + + p.saveServerList(l) + + return !found +} + +// SetBackupServers sets a list of Nomad Servers to be used in the event that +// the Nomad Agent lost contact with the list of Nomad Servers provided via +// the Nomad Agent's heartbeat. If available, the backup servers are +// populated via Consul. +func (p *RPCProxy) SetBackupServers(addrs []string) error { + l := make([]*ServerEndpoint, 0, len(addrs)) + for _, s := range addrs { + s, err := NewServerEndpoint(s) + if err != nil { + p.logger.Printf("[WARN] client.rpcproxy: unable to create backup server %+q: %v", s, err) + return fmt.Errorf("unable to create new backup server from %+q: %v", s, err) + } + l = append(l, s) + } + + p.serverListLock.Lock() + p.backupServers.L = l + p.serverListLock.Unlock() + + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + for _, s := range l { + p.activateEndpoint(s) + } + + return nil +} + +// AddPrimaryServer takes the RPC address of a Nomad server, creates a new +// endpoint, and adds it to both the primaryServers list and the active +// serverList used in the RPC Proxy. If the endpoint is not known by the +// RPCProxy, appends the endpoint to the list. The new endpoint will begin +// seeing use after the rebalance timer fires (or enough servers fail +// organically). Any values in the primary server list are overridden by the +// next successful heartbeat. +func (p *RPCProxy) AddPrimaryServer(rpcAddr string) *ServerEndpoint { + s, err := NewServerEndpoint(rpcAddr) + if err != nil { + p.logger.Printf("[WARN] client.rpcproxy: unable to create new primary server from endpoint %+q: %v", rpcAddr, err) + return nil + } + + k := s.Key() + p.serverListLock.Lock() + if serverExists := p.primaryServers.serverExistByKey(k); serverExists { + p.serverListLock.Unlock() + return s + } + p.primaryServers.L = append(p.primaryServers.L, s) + p.serverListLock.Unlock() + + p.activatedListLock.Lock() + p.activateEndpoint(s) + p.activatedListLock.Unlock() + + return s +} + +// cycleServers returns a new list of servers that has dequeued the first +// server and enqueued it at the end of the list. cycleServers assumes the +// caller is holding the listLock. cycleServer does not test or ping +// the next server inline. cycleServer may be called when the environment +// has just entered an unhealthy situation and blocking on a server test is +// less desirable than just returning the next server in the firing line. If +// the next server fails, it will fail fast enough and cycleServer will be +// called again. +func (l *serverList) cycleServer() (servers []*ServerEndpoint) { + numServers := len(l.L) + if numServers < 2 { + return servers // No action required + } + + newServers := make([]*ServerEndpoint, 0, numServers) + newServers = append(newServers, l.L[1:]...) + newServers = append(newServers, l.L[0]) + + return newServers +} + +// serverExistByKey performs a search to see if a server exists in the +// serverList. Assumes the caller is holding at least a read lock. +func (l *serverList) serverExistByKey(targetKey *EndpointKey) bool { + var found bool + for _, server := range l.L { + if targetKey.Equal(server.Key()) { + found = true + } + } + return found +} + +// removeServerByKey performs an inline removal of the first matching server +func (l *serverList) removeServerByKey(targetKey *EndpointKey) { + for i, s := range l.L { + if targetKey.Equal(s.Key()) { + copy(l.L[i:], l.L[i+1:]) + l.L[len(l.L)-1] = nil + l.L = l.L[:len(l.L)-1] + return + } + } +} + +// shuffleServers shuffles the server list in place +func (l *serverList) shuffleServers() { + for i := len(l.L) - 1; i > 0; i-- { + j := rand.Int31n(int32(i + 1)) + l.L[i], l.L[j] = l.L[j], l.L[i] + } +} + +// String returns a string representation of serverList +func (l *serverList) String() string { + if len(l.L) == 0 { + return fmt.Sprintf("empty server list") + } + + serverStrs := make([]string, 0, len(l.L)) + for _, server := range l.L { + serverStrs = append(serverStrs, server.String()) + } + + return fmt.Sprintf("[%s]", strings.Join(serverStrs, ", ")) +} + +// FindServer takes out an internal "read lock" and searches through the list +// of servers to find a "healthy" server. If the server is actually +// unhealthy, we rely on heartbeats to detect this and remove the node from +// the server list. If the server at the front of the list has failed or +// fails during an RPC call, it is rotated to the end of the list. If there +// are no servers available, return nil. +func (p *RPCProxy) FindServer() *ServerEndpoint { + l := p.getServerList() + numServers := len(l.L) + if numServers == 0 { + p.logger.Printf("[WARN] client.rpcproxy: No servers available") + return nil + } + + // Return whatever is at the front of the list because it is + // assumed to be the oldest in the server list (unless - + // hypothetically - the server list was rotated right after a + // server was added). + return l.L[0] +} + +// getServerList is a convenience method which hides the locking semantics +// of atomic.Value from the caller. +func (p *RPCProxy) getServerList() serverList { + return p.activatedList.Load().(serverList) +} + +// saveServerList is a convenience method which hides the locking semantics +// of atomic.Value from the caller. +func (p *RPCProxy) saveServerList(l serverList) { + p.activatedList.Store(l) +} + +// LeaderAddr returns the current leader address. If an empty string, then +// the Nomad Server for this Nomad Agent is in the minority or the Nomad +// Servers are in the middle of an election. +func (p *RPCProxy) LeaderAddr() string { + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + return p.leaderAddr +} + +// NotifyFailedServer marks the passed in server as "failed" by rotating it +// to the end of the server list. +func (p *RPCProxy) NotifyFailedServer(s *ServerEndpoint) { + l := p.getServerList() + + // If the server being failed is not the first server on the list, + // this is a noop. If, however, the server is failed and first on + // the list, acquire the lock, retest, and take the penalty of moving + // the server to the end of the list. + + // Only rotate the server list when there is more than one server + if len(l.L) > 1 && l.L[0] == s { + // Grab a lock, retest, and take the hit of cycling the first + // server to the end. + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + l = p.getServerList() + + if len(l.L) > 1 && l.L[0] == s { + l.L = l.cycleServer() + p.saveServerList(l) + } + } +} + +// NumNodes returns the estimated number of nodes according to the last Nomad +// Heartbeat. +func (p *RPCProxy) NumNodes() int { + return p.numNodes +} + +// NumServers takes out an internal "read lock" and returns the number of +// servers. numServers includes both healthy and unhealthy servers. +func (p *RPCProxy) NumServers() int { + l := p.getServerList() + return len(l.L) +} + +// RebalanceServers shuffles the list of servers on this agent. The server +// at the front of the list is selected for the next RPC. RPC calls that +// fail for a particular server are rotated to the end of the list. This +// method reshuffles the list periodically in order to redistribute work +// across all known Nomad servers (i.e. guarantee that the order of servers +// in the server list is not positively correlated with the age of a server +// in the Nomad cluster). Periodically shuffling the server list prevents +// long-lived clients from fixating on long-lived servers. +// +// Unhealthy servers are removed from the server list during the next client +// heartbeat. Before the newly shuffled server list is saved, the new remote +// endpoint is tested to ensure its responsive. +func (p *RPCProxy) RebalanceServers() { + var serverListLocked bool + p.serverListLock.Lock() + serverListLocked = true + defer func() { + if serverListLocked { + p.serverListLock.Unlock() + } + }() + + // Early abort if there is nothing to shuffle + if (len(p.primaryServers.L) + len(p.backupServers.L)) < 2 { + return + } + + // Shuffle server lists independently + p.primaryServers.shuffleServers() + p.backupServers.shuffleServers() + + // Create a new merged serverList + type targetServer struct { + server *ServerEndpoint + // 'p' == Primary Server + // 's' == Secondary/Backup Server + // 'b' == Both + state byte + } + mergedList := make(map[EndpointKey]*targetServer, len(p.primaryServers.L)+len(p.backupServers.L)) + for _, s := range p.primaryServers.L { + mergedList[*s.Key()] = &targetServer{server: s, state: 'p'} + } + for _, s := range p.backupServers.L { + k := s.Key() + _, found := mergedList[*k] + if found { + mergedList[*k].state = 'b' + } else { + mergedList[*k] = &targetServer{server: s, state: 's'} + } + } + + l := &serverList{L: make([]*ServerEndpoint, 0, len(mergedList))} + for _, s := range p.primaryServers.L { + l.L = append(l.L, s) + } + for _, v := range mergedList { + if v.state != 's' { + continue + } + l.L = append(l.L, v.server) + } + + // Release the lock before we begin transition to operations on the + // network timescale and attempt to ping servers. A copy of the + // servers has been made at this point. + p.serverListLock.Unlock() + serverListLocked = false + + // Iterate through the shuffled server list to find an assumed + // healthy server. NOTE: Do not iterate on the list directly because + // this loop mutates the server list in-place. + var foundHealthyServer bool + for i := 0; i < len(l.L); i++ { + // Always test the first server. Failed servers are cycled + // and eventually removed from the list when Nomad heartbeats + // detect the failed node. + selectedServer := l.L[0] + + ok, err := p.connPoolPinger.PingNomadServer(p.configInfo.Region(), p.configInfo.RPCMajorVersion(), selectedServer) + if ok { + foundHealthyServer = true + break + } + p.logger.Printf(`[DEBUG] client.rpcproxy: pinging server "%s" failed: %s`, selectedServer.String(), err) + + l.cycleServer() + } + + // If no healthy servers were found, sleep and wait for the admin to + // join this node to a server and begin receiving heartbeats with an + // updated list of Nomad servers. Or Consul will begin advertising a + // new server in the nomad service (Nomad server service). + if !foundHealthyServer { + p.logger.Printf("[DEBUG] client.rpcproxy: No healthy servers during rebalance, aborting") + return + } + + // Verify that all servers are present. Reconcile will save the + // final serverList. + if p.reconcileServerList(l) { + p.logger.Printf("[TRACE] client.rpcproxy: Rebalanced %d servers, next active server is %s", len(l.L), l.L[0].String()) + } else { + // reconcileServerList failed because Nomad removed the + // server that was at the front of the list that had + // successfully been Ping'ed. Between the Ping and + // reconcile, a Nomad heartbeat removed the node. + // + // Instead of doing any heroics, "freeze in place" and + // continue to use the existing connection until the next + // rebalance occurs. + } + + return +} + +// reconcileServerList returns true when the first server in serverList +// (l) exists in the receiver's serverList (p). If true, the merged +// serverList (l) is stored as the receiver's serverList (p). Returns +// false if the first server in p does not exist in the passed in list (l) +// (i.e. was removed by Nomad during a PingNomadServer() call. Newly added +// servers are appended to the list and other missing servers are removed +// from the list. +func (p *RPCProxy) reconcileServerList(l *serverList) bool { + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + + // newServerList is a serverList that has been kept up-to-date with + // join and leave events. + newServerList := p.getServerList() + + // If a Nomad heartbeat removed all nodes, or there is no selected + // server (zero nodes in serverList), abort early. + if len(newServerList.L) == 0 || len(l.L) == 0 { + return false + } + + type targetServer struct { + server *ServerEndpoint + + // 'b' == both + // 'o' == original + // 'n' == new + state byte + } + mergedList := make(map[EndpointKey]*targetServer, len(l.L)) + for _, s := range l.L { + mergedList[*s.Key()] = &targetServer{server: s, state: 'o'} + } + for _, s := range newServerList.L { + k := s.Key() + _, found := mergedList[*k] + if found { + mergedList[*k].state = 'b' + } else { + mergedList[*k] = &targetServer{server: s, state: 'n'} + } + } + + // Ensure the selected server has not been removed by a heartbeat + selectedServerKey := l.L[0].Key() + if v, found := mergedList[*selectedServerKey]; found && v.state == 'o' { + return false + } + + // Append any new servers and remove any old servers + for k, v := range mergedList { + switch v.state { + case 'b': + // Do nothing, server exists in both + case 'o': + // Server has been removed + l.removeServerByKey(&k) + case 'n': + // Server added + l.L = append(l.L, v.server) + default: + panic("unknown merge list state") + } + } + + p.saveServerList(*l) + return true +} + +// RemoveServer takes out an internal write lock and removes a server from +// the activated server list. +func (p *RPCProxy) RemoveServer(s *ServerEndpoint) { + // Lock hierarchy protocol dictates serverListLock is acquired first. + p.serverListLock.Lock() + defer p.serverListLock.Unlock() + + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + l := p.getServerList() + + k := s.Key() + l.removeServerByKey(k) + p.saveServerList(l) + + p.primaryServers.removeServerByKey(k) + p.backupServers.removeServerByKey(k) +} + +// refreshServerRebalanceTimer is only called once p.rebalanceTimer expires. +func (p *RPCProxy) refreshServerRebalanceTimer() time.Duration { + l := p.getServerList() + numServers := len(l.L) + // Limit this connection's life based on the size (and health) of the + // cluster. Never rebalance a connection more frequently than + // connReuseLowWatermarkDuration, and make sure we never exceed + // clusterWideRebalanceConnsPerSec operations/s across numLANMembers. + clusterWideRebalanceConnsPerSec := float64(numServers * newRebalanceConnsPerSecPerServer) + connReuseLowWatermarkDuration := clientRPCMinReuseDuration + lib.RandomStagger(clientRPCMinReuseDuration/clientRPCJitterFraction) + numLANMembers := p.numNodes + connRebalanceTimeout := lib.RateScaledInterval(clusterWideRebalanceConnsPerSec, connReuseLowWatermarkDuration, numLANMembers) + + p.rebalanceTimer.Reset(connRebalanceTimeout) + return connRebalanceTimeout +} + +// ResetRebalanceTimer resets the rebalance timer. This method exists for +// testing and should not be used directly. +func (p *RPCProxy) ResetRebalanceTimer() { + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + p.rebalanceTimer.Reset(clientRPCMinReuseDuration) +} + +// ServerRPCAddrs returns one RPC Address per server +func (p *RPCProxy) ServerRPCAddrs() []string { + l := p.getServerList() + serverAddrs := make([]string, 0, len(l.L)) + for _, s := range l.L { + serverAddrs = append(serverAddrs, s.Addr.String()) + } + return serverAddrs +} + +// Run is used to start and manage the task of automatically shuffling and +// rebalancing the list of Nomad servers. This maintenance only happens +// periodically based on the expiration of the timer. Failed servers are +// automatically cycled to the end of the list. New servers are appended to +// the list. The order of the server list must be shuffled periodically to +// distribute load across all known and available Nomad servers. +func (p *RPCProxy) Run() { + for { + select { + case <-p.rebalanceTimer.C: + p.RebalanceServers() + + p.refreshServerRebalanceTimer() + case <-p.shutdownCh: + p.logger.Printf("[INFO] client.rpcproxy: shutting down") + return + } + } +} + +// RefreshServerLists is called when the Client receives an update from a +// Nomad Server. The response from Nomad Client Heartbeats contain a list of +// Nomad Servers that the Nomad Client should use for RPC requests. +// RefreshServerLists does not rebalance its serverLists (that is handled +// elsewhere via a periodic timer). New Nomad Servers learned via the +// heartbeat are appended to the RPCProxy's activated serverList. Servers +// that are no longer present in the Heartbeat are removed immediately from +// all server lists. Nomad Servers speaking a newer major or minor API +// version are filtered from the serverList. +func (p *RPCProxy) RefreshServerLists(servers []*structs.NodeServerInfo, numNodes int32, leaderRPCAddr string) error { + // Merge all servers found in the response. Servers in the response + // with newer API versions are filtered from the list. If the list + // is missing an address found in the RPCProxy's server list, remove + // it from the RPCProxy. + + p.serverListLock.Lock() + defer p.serverListLock.Unlock() + + // Clear the backup server list when a heartbeat contains at least + // one server. + if len(servers) > 0 && len(p.backupServers.L) > 0 { + p.backupServers.L = make([]*ServerEndpoint, 0, len(servers)) + } + + // 1) Create a map to reconcile the difference between + // p.primaryServers and servers. + type targetServer struct { + server *ServerEndpoint + + // 'b' == both + // 'o' == original + // 'n' == new + state byte + } + mergedPrimaryMap := make(map[EndpointKey]*targetServer, len(p.primaryServers.L)+len(servers)) + numOldServers := 0 + for _, s := range p.primaryServers.L { + mergedPrimaryMap[*s.Key()] = &targetServer{server: s, state: 'o'} + numOldServers++ + } + numBothServers := 0 + var newServers bool + for _, s := range servers { + // Filter out servers using a newer API version. Prevent + // spamming the logs every heartbeat. + // + // TODO(sean@): Move the logging throttle logic into a + // dedicated logging package so RPCProxy does not have to + // perform this accounting. + if int32(p.configInfo.RPCMajorVersion()) < s.RPCMajorVersion || + (int32(p.configInfo.RPCMajorVersion()) == s.RPCMajorVersion && + int32(p.configInfo.RPCMinorVersion()) < s.RPCMinorVersion) { + now := time.Now() + t, ok := p.rpcAPIMismatchThrottle[s.RPCAdvertiseAddr] + if ok && t.After(now) { + continue + } + + p.logger.Printf("[WARN] client.rpcproxy: API mismatch between client version (v%d.%d) and server version (v%d.%d), ignoring server %+q", p.configInfo.RPCMajorVersion(), p.configInfo.RPCMinorVersion(), s.RPCMajorVersion, s.RPCMinorVersion, s.RPCAdvertiseAddr) + p.rpcAPIMismatchThrottle[s.RPCAdvertiseAddr] = now.Add(rpcAPIMismatchLogRate) + continue + } + + server, err := NewServerEndpoint(s.RPCAdvertiseAddr) + if err != nil { + p.logger.Printf("[WARN] client.rpcproxy: Unable to create a server from %+q: %v", s.RPCAdvertiseAddr, err) + continue + } + + // Nomad servers in different datacenters are automatically + // added to the backup server list. + if s.Datacenter != p.configInfo.Datacenter() { + p.backupServers.L = append(p.backupServers.L, server) + continue + } + + k := server.Key() + _, found := mergedPrimaryMap[*k] + if found { + mergedPrimaryMap[*k].state = 'b' + numBothServers++ + } else { + mergedPrimaryMap[*k] = &targetServer{server: server, state: 'n'} + newServers = true + } + } + + // Short-circuit acquiring listLock if nothing changed + if !newServers && numOldServers == numBothServers { + return nil + } + + p.activatedListLock.Lock() + defer p.activatedListLock.Unlock() + newServerCfg := p.getServerList() + for k, v := range mergedPrimaryMap { + switch v.state { + case 'b': + // Do nothing, server exists in both + case 'o': + // Server has been removed + + // TODO(sean@): Teach Nomad servers how to remove + // themselves from their heartbeat in order to + // gracefully drain their clients over the next + // cluster's max rebalanceTimer duration. Without + // this enhancement, if a server being shutdown and + // it is the first in serverList, the client will + // fail its next RPC connection. + p.primaryServers.removeServerByKey(&k) + newServerCfg.removeServerByKey(&k) + case 'n': + // Server added. Append it to both lists + // immediately. The server should only go into + // active use in the event of a failure or after a + // rebalance occurs. + p.primaryServers.L = append(p.primaryServers.L, v.server) + newServerCfg.L = append(newServerCfg.L, v.server) + default: + panic("unknown merge list state") + } + } + + p.numNodes = int(numNodes) + p.leaderAddr = leaderRPCAddr + p.saveServerList(newServerCfg) + + return nil +} diff -Nru nomad-0.3.2+dfsg/client/rpcproxy/rpcproxy_test.go nomad-0.4.0+dfsg/client/rpcproxy/rpcproxy_test.go --- nomad-0.3.2+dfsg/client/rpcproxy/rpcproxy_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/rpcproxy/rpcproxy_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,818 @@ +package rpcproxy + +import ( + "bytes" + "encoding/binary" + "fmt" + "log" + "math/rand" + "net" + "os" + "strings" + "sync/atomic" + "testing" + "time" +) + +const ( + ipv4len = 4 + nodeNameFmt = "s%03d" + defaultNomadPort = "4647" + + // Poached from RFC2544 and RFC3330 + testingNetworkCidr = "198.18.0.0/15" + testingNetworkUint32 = 3323068416 +) + +var ( + localLogger *log.Logger + localLogBuffer *bytes.Buffer + serverCount uint32 + validIp uint32 +) + +func init() { + localLogBuffer = new(bytes.Buffer) + localLogger = log.New(localLogBuffer, "", 0) +} + +func makeServerEndpointName() string { + serverNum := atomic.AddUint32(&serverCount, 1) + validIp := testingNetworkUint32 + serverNum + ipv4 := make(net.IP, ipv4len) + binary.BigEndian.PutUint32(ipv4, validIp) + return net.JoinHostPort(ipv4.String(), defaultNomadPort) +} + +func GetBufferedLogger() *log.Logger { + return localLogger +} + +type fauxConnPool struct { + // failPct between 0.0 and 1.0 == pct of time a Ping should fail + failPct float64 +} + +func (cp *fauxConnPool) PingNomadServer(region string, majorVersion int, s *ServerEndpoint) (bool, error) { + var success bool + successProb := rand.Float64() + if successProb > cp.failPct { + success = true + } + return success, nil +} + +type fauxSerf struct { + datacenter string + numNodes int + region string + rpcMinorVersion int + rpcMajorVersion int +} + +func (s *fauxSerf) NumNodes() int { + return s.numNodes +} + +func (s *fauxSerf) Region() string { + return s.region +} + +func (s *fauxSerf) Datacenter() string { + return s.datacenter +} + +func (s *fauxSerf) RPCMajorVersion() int { + return s.rpcMajorVersion +} + +func (s *fauxSerf) RPCMinorVersion() int { + return s.rpcMinorVersion +} + +func testRPCProxy() (p *RPCProxy) { + logger := GetBufferedLogger() + logger = log.New(os.Stderr, "", log.LstdFlags) + shutdownCh := make(chan struct{}) + p = NewRPCProxy(logger, shutdownCh, &fauxSerf{numNodes: 16384}, &fauxConnPool{}) + return p +} + +func testRPCProxyFailProb(failPct float64) (p *RPCProxy) { + logger := GetBufferedLogger() + logger = log.New(os.Stderr, "", log.LstdFlags) + shutdownCh := make(chan struct{}) + p = NewRPCProxy(logger, shutdownCh, &fauxSerf{}, &fauxConnPool{failPct: failPct}) + return p +} + +// func (p *RPCProxy) AddPrimaryServer(server *ServerEndpoint) { +func TestRPCProxy_AddPrimaryServer(t *testing.T) { + p := testRPCProxy() + var num int + num = p.NumServers() + if num != 0 { + t.Fatalf("Expected zero servers to start") + } + + s1Endpoint := makeServerEndpointName() + s1 := p.AddPrimaryServer(s1Endpoint) + num = p.NumServers() + if num != 1 { + t.Fatalf("Expected one server") + } + if s1 == nil { + t.Fatalf("bad") + } + if s1.Name != s1Endpoint { + t.Fatalf("bad") + } + + s1 = p.AddPrimaryServer(s1Endpoint) + num = p.NumServers() + if num != 1 { + t.Fatalf("Expected one server (still)") + } + if s1 == nil { + t.Fatalf("bad") + } + if s1.Name != s1Endpoint { + t.Fatalf("bad") + } + + s2Endpoint := makeServerEndpointName() + s2 := p.AddPrimaryServer(s2Endpoint) + num = p.NumServers() + if num != 2 { + t.Fatalf("Expected two servers") + } + if s2 == nil { + t.Fatalf("bad") + } + if s2.Name != s2Endpoint { + t.Fatalf("bad") + } +} + +// func (p *RPCProxy) FindServer() (server *ServerEndpoint) { +func TestRPCProxy_FindServer(t *testing.T) { + p := testRPCProxy() + + if p.FindServer() != nil { + t.Fatalf("Expected nil return") + } + + s1Endpoint := makeServerEndpointName() + p.AddPrimaryServer(s1Endpoint) + if p.NumServers() != 1 { + t.Fatalf("Expected one server") + } + + s1 := p.FindServer() + if s1 == nil { + t.Fatalf("Expected non-nil server") + } + if s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server") + } + + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server (still)") + } + + s2Endpoint := makeServerEndpointName() + p.AddPrimaryServer(s2Endpoint) + if p.NumServers() != 2 { + t.Fatalf("Expected two servers") + } + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server (still)") + } + + p.NotifyFailedServer(s1) + s2 := p.FindServer() + if s2 == nil || s2.Name != s2Endpoint { + t.Fatalf("Expected s2 server") + } + + p.NotifyFailedServer(s2) + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server") + } +} + +// func New(logger *log.Logger, shutdownCh chan struct{}) (p *RPCProxy) { +func TestRPCProxy_New(t *testing.T) { + logger := GetBufferedLogger() + logger = log.New(os.Stderr, "", log.LstdFlags) + shutdownCh := make(chan struct{}) + p := NewRPCProxy(logger, shutdownCh, &fauxSerf{}, &fauxConnPool{}) + if p == nil { + t.Fatalf("RPCProxy nil") + } +} + +// func (p *RPCProxy) NotifyFailedServer(server *ServerEndpoint) { +func TestRPCProxy_NotifyFailedServer(t *testing.T) { + p := testRPCProxy() + + if p.NumServers() != 0 { + t.Fatalf("Expected zero servers to start") + } + + // Try notifying for a server that is not managed by RPCProxy + s1Endpoint := makeServerEndpointName() + s1 := p.AddPrimaryServer(s1Endpoint) + if s1 == nil { + t.Fatalf("bad") + } + if p.NumServers() != 1 { + t.Fatalf("bad") + } + p.RemoveServer(s1) + if p.NumServers() != 0 { + t.Fatalf("bad") + } + p.NotifyFailedServer(s1) + s1 = p.AddPrimaryServer(s1Endpoint) + + // Test again w/ a server not in the list + s2Endpoint := makeServerEndpointName() + s2 := p.AddPrimaryServer(s2Endpoint) + if s2 == nil { + t.Fatalf("bad") + } + if p.NumServers() != 2 { + t.Fatalf("bad") + } + p.RemoveServer(s2) + if p.NumServers() != 1 { + t.Fatalf("bad") + } + p.NotifyFailedServer(s2) + if p.NumServers() != 1 { + t.Fatalf("Expected one server") + } + + // Re-add s2 so there are two servers in the RPCProxy server list + s2 = p.AddPrimaryServer(s2Endpoint) + if p.NumServers() != 2 { + t.Fatalf("Expected two servers") + } + + // Find the first server, it should be s1 + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server") + } + + // Notify s2 as failed, s1 should still be first + p.NotifyFailedServer(s2) + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server (still)") + } + + // Fail s1, s2 should be first + p.NotifyFailedServer(s1) + s2 = p.FindServer() + if s2 == nil || s2.Name != s2Endpoint { + t.Fatalf("Expected s2 server") + } + + // Fail s2, s1 should be first + p.NotifyFailedServer(s2) + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server") + } +} + +// func (p *RPCProxy) NumServers() (numServers int) { +func TestRPCProxy_NumServers(t *testing.T) { + p := testRPCProxy() + const maxNumServers = 100 + serverList := make([]*ServerEndpoint, 0, maxNumServers) + + // Add some servers + for i := 0; i < maxNumServers; i++ { + num := p.NumServers() + if num != i { + t.Fatalf("%d: Expected %d servers", i, num) + } + serverName := makeServerEndpointName() + s := p.AddPrimaryServer(serverName) + if s == nil { + t.Fatalf("Expected server from %+q", serverName) + } + serverList = append(serverList, s) + + num = p.NumServers() + if num != i+1 { + t.Fatalf("%d: Expected %d servers", i, num+1) + } + } + + // Remove some servers + for i := maxNumServers; i > 0; i-- { + num := p.NumServers() + if num != i { + t.Fatalf("%d: Expected %d servers", i, num) + } + p.RemoveServer(serverList[i-1]) + num = p.NumServers() + if num != i-1 { + t.Fatalf("%d: Expected %d servers", i, num-1) + } + } +} + +// func (p *RPCProxy) RebalanceServers() { +func TestRPCProxy_RebalanceServers(t *testing.T) { + const failPct = 0.5 + p := testRPCProxyFailProb(failPct) + const maxServers = 100 + const numShuffleTests = 100 + const uniquePassRate = 0.5 + + // Make a huge list of nodes. + for i := 0; i < maxServers; i++ { + p.AddPrimaryServer(makeServerEndpointName()) + } + + // Keep track of how many unique shuffles we get. + uniques := make(map[string]struct{}, maxServers) + for i := 0; i < numShuffleTests; i++ { + p.RebalanceServers() + + var names []string + for j := 0; j < maxServers; j++ { + server := p.FindServer() + p.NotifyFailedServer(server) + names = append(names, server.Name) + } + key := strings.Join(names, "|") + uniques[key] = struct{}{} + } + + // We have to allow for the fact that there won't always be a unique + // shuffle each pass, so we just look for smell here without the test + // being flaky. + if len(uniques) < int(maxServers*uniquePassRate) { + t.Fatalf("unique shuffle ratio too low: %d/%d", len(uniques), maxServers) + } +} + +// func (p *RPCProxy) RemoveServer(server *ServerEndpoint) { +func TestRPCProxy_RemoveServer(t *testing.T) { + p := testRPCProxy() + if p.NumServers() != 0 { + t.Fatalf("Expected zero servers to start") + } + + // Test removing server before its added + s1Endpoint := makeServerEndpointName() + s1 := p.AddPrimaryServer(s1Endpoint) + if p.NumServers() != 1 { + t.Fatalf("bad") + } + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server: %+q", s1.Name) + } + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 server: %+q", s1.Name) + } + p.RemoveServer(s1) + if p.NumServers() != 0 { + t.Fatalf("bad") + } + // Remove it a second time now that it doesn't exist + p.RemoveServer(s1) + if p.NumServers() != 0 { + t.Fatalf("bad") + } + p.AddPrimaryServer(s1Endpoint) + if p.NumServers() != 1 { + t.Fatalf("bad") + } + + s2Endpoint := makeServerEndpointName() + s2 := p.AddPrimaryServer(s2Endpoint) + if p.NumServers() != 2 { + t.Fatalf("bad") + } + if s2 == nil || s2.Name != s2Endpoint { + t.Fatalf("Expected s2 server: %+q", s2.Name) + } + s1 = p.FindServer() + if s1 == nil || s1.Name != s1Endpoint { + t.Fatalf("Expected s1 to be the front of the list: %+q==%+q", s1.Name, s1Endpoint) + } + // Move s1 to the back of the server list + p.NotifyFailedServer(s1) + s2 = p.FindServer() + if s2 == nil || s2.Name != s2Endpoint { + t.Fatalf("Expected s2 server: %+q", s2Endpoint) + } + p.RemoveServer(s2) + if p.NumServers() != 1 { + t.Fatalf("bad") + } + p.RemoveServer(s2) + if p.NumServers() != 1 { + t.Fatalf("bad") + } + p.AddPrimaryServer(s2Endpoint) + + const maxServers = 19 + servers := make([]*ServerEndpoint, 0, maxServers) + servers = append(servers, s1) + servers = append(servers, s2) + // Already added two servers above + for i := maxServers; i > 2; i-- { + server := p.AddPrimaryServer(makeServerEndpointName()) + servers = append(servers, server) + } + if p.NumServers() != maxServers { + t.Fatalf("Expected %d servers, received %d", maxServers, p.NumServers()) + } + + p.RebalanceServers() + + if p.NumServers() != maxServers { + t.Fatalf("Expected %d servers, received %d", maxServers, p.NumServers()) + } + + findServer := func(server *ServerEndpoint) bool { + for i := p.NumServers(); i > 0; i-- { + s := p.FindServer() + if s == server { + return true + } + } + return false + } + + expectedNumServers := maxServers + removedServers := make([]*ServerEndpoint, 0, maxServers) + + // Remove servers from the front of the list + for i := 3; i > 0; i-- { + server := p.FindServer() + if server == nil { + t.Fatalf("FindServer returned nil") + } + p.RemoveServer(server) + expectedNumServers-- + if p.NumServers() != expectedNumServers { + t.Fatalf("Expected %d servers (got %d)", expectedNumServers, p.NumServers()) + } + if findServer(server) == true { + t.Fatalf("Did not expect to find server %s after removal from the front", server.Name) + } + removedServers = append(removedServers, server) + } + + // Remove server from the end of the list + for i := 3; i > 0; i-- { + server := p.FindServer() + p.NotifyFailedServer(server) + p.RemoveServer(server) + expectedNumServers-- + if p.NumServers() != expectedNumServers { + t.Fatalf("Expected %d servers (got %d)", expectedNumServers, p.NumServers()) + } + if findServer(server) == true { + t.Fatalf("Did not expect to find server %s", server.Name) + } + removedServers = append(removedServers, server) + } + + // Remove server from the middle of the list + for i := 3; i > 0; i-- { + server := p.FindServer() + p.NotifyFailedServer(server) + server2 := p.FindServer() + p.NotifyFailedServer(server2) // server2 now at end of the list + + p.RemoveServer(server) + expectedNumServers-- + if p.NumServers() != expectedNumServers { + t.Fatalf("Expected %d servers (got %d)", expectedNumServers, p.NumServers()) + } + if findServer(server) == true { + t.Fatalf("Did not expect to find server %s", server.Name) + } + removedServers = append(removedServers, server) + } + + if p.NumServers()+len(removedServers) != maxServers { + t.Fatalf("Expected %d+%d=%d servers", p.NumServers(), len(removedServers), maxServers) + } + + // Drain the remaining servers from the middle + for i := p.NumServers(); i > 0; i-- { + server := p.FindServer() + p.NotifyFailedServer(server) + server2 := p.FindServer() + p.NotifyFailedServer(server2) // server2 now at end of the list + p.RemoveServer(server) + removedServers = append(removedServers, server) + } + + if p.NumServers() != 0 { + t.Fatalf("Expected an empty server list") + } + if len(removedServers) != maxServers { + t.Fatalf("Expected all servers to be in removed server list") + } +} + +// func (p *RPCProxy) Start() { + +// func (l *serverList) cycleServer() (servers []*Server) { +func TestRPCProxyInternal_cycleServer(t *testing.T) { + p := testRPCProxy() + l := p.getServerList() + + server0 := &ServerEndpoint{Name: "server1"} + server1 := &ServerEndpoint{Name: "server2"} + server2 := &ServerEndpoint{Name: "server3"} + l.L = append(l.L, server0, server1, server2) + p.saveServerList(l) + + l = p.getServerList() + if len(l.L) != 3 { + t.Fatalf("server length incorrect: %d/3", len(l.L)) + } + if l.L[0] != server0 && + l.L[1] != server1 && + l.L[2] != server2 { + t.Fatalf("initial server ordering not correct") + } + + l.L = l.cycleServer() + if len(l.L) != 3 { + t.Fatalf("server length incorrect: %d/3", len(l.L)) + } + if l.L[0] != server1 && + l.L[1] != server2 && + l.L[2] != server0 { + t.Fatalf("server ordering after one cycle not correct") + } + + l.L = l.cycleServer() + if len(l.L) != 3 { + t.Fatalf("server length incorrect: %d/3", len(l.L)) + } + if l.L[0] != server2 && + l.L[1] != server0 && + l.L[2] != server1 { + t.Fatalf("server ordering after two cycles not correct") + } + + l.L = l.cycleServer() + if len(l.L) != 3 { + t.Fatalf("server length incorrect: %d/3", len(l.L)) + } + if l.L[0] != server0 && + l.L[1] != server1 && + l.L[2] != server2 { + t.Fatalf("server ordering after three cycles not correct") + } +} + +// func (p *RPCProxy) getServerList() serverList { +func TestRPCProxyInternal_getServerList(t *testing.T) { + p := testRPCProxy() + l := p.getServerList() + if l.L == nil { + t.Fatalf("serverList.servers nil") + } + + if len(l.L) != 0 { + t.Fatalf("serverList.servers length not zero") + } +} + +func TestRPCProxyInternal_New(t *testing.T) { + p := testRPCProxy() + if p == nil { + t.Fatalf("bad") + } + + if p.logger == nil { + t.Fatalf("bad") + } + + if p.shutdownCh == nil { + t.Fatalf("bad") + } +} + +// func (p *RPCProxy) reconcileServerList(l *serverList) bool { +func TestRPCProxyInternal_reconcileServerList(t *testing.T) { + tests := []int{0, 1, 2, 3, 4, 5, 10, 100} + for _, n := range tests { + ok, err := test_reconcileServerList(n) + if !ok { + t.Errorf("Expected %d to pass: %v", n, err) + } + } +} + +func test_reconcileServerList(maxServers int) (bool, error) { + // Build a server list, reconcile, verify the missing servers are + // missing, the added have been added, and the original server is + // present. + const failPct = 0.5 + p := testRPCProxyFailProb(failPct) + + var failedServers, healthyServers []*ServerEndpoint + for i := 0; i < maxServers; i++ { + nodeName := fmt.Sprintf("s%02d", i) + + node := &ServerEndpoint{Name: nodeName} + // Add 66% of servers to RPCProxy + if rand.Float64() > 0.33 { + p.activateEndpoint(node) + + // Of healthy servers, (ab)use connPoolPinger to + // failPct of the servers for the reconcile. This + // allows for the selected server to no longer be + // healthy for the reconcile below. + if ok, _ := p.connPoolPinger.PingNomadServer(p.configInfo.Region(), p.configInfo.RPCMajorVersion(), node); ok { + // Will still be present + healthyServers = append(healthyServers, node) + } else { + // Will be missing + failedServers = append(failedServers, node) + } + } else { + // Will be added from the call to reconcile + healthyServers = append(healthyServers, node) + } + } + + // Randomize RPCProxy's server list + p.RebalanceServers() + selectedServer := p.FindServer() + + var selectedServerFailed bool + for _, s := range failedServers { + if selectedServer.Key().Equal(s.Key()) { + selectedServerFailed = true + break + } + } + + // Update RPCProxy's server list to be "healthy" based on Serf. + // Reconcile this with origServers, which is shuffled and has a live + // connection, but possibly out of date. + origServers := p.getServerList() + p.saveServerList(serverList{L: healthyServers}) + + // This should always succeed with non-zero server lists + if !selectedServerFailed && !p.reconcileServerList(&origServers) && + len(p.getServerList().L) != 0 && + len(origServers.L) != 0 { + // If the random gods are unfavorable and we end up with zero + // length lists, expect things to fail and retry the test. + return false, fmt.Errorf("Expected reconcile to succeed: %v %d %d", + selectedServerFailed, + len(p.getServerList().L), + len(origServers.L)) + } + + // If we have zero-length server lists, test succeeded in degenerate + // case. + if len(p.getServerList().L) == 0 && + len(origServers.L) == 0 { + // Failed as expected w/ zero length list + return true, nil + } + + resultingServerMap := make(map[EndpointKey]bool) + for _, s := range p.getServerList().L { + resultingServerMap[*s.Key()] = true + } + + // Test to make sure no failed servers are in the RPCProxy's + // list. Error if there are any failedServers in l.servers + for _, s := range failedServers { + _, ok := resultingServerMap[*s.Key()] + if ok { + return false, fmt.Errorf("Found failed server %v in merged list %v", s, resultingServerMap) + } + } + + // Test to make sure all healthy servers are in the healthy list. + if len(healthyServers) != len(p.getServerList().L) { + return false, fmt.Errorf("Expected healthy map and servers to match: %d/%d", len(healthyServers), len(healthyServers)) + } + + // Test to make sure all healthy servers are in the resultingServerMap list. + for _, s := range healthyServers { + _, ok := resultingServerMap[*s.Key()] + if !ok { + return false, fmt.Errorf("Server %v missing from healthy map after merged lists", s) + } + } + return true, nil +} + +// func (l *serverList) refreshServerRebalanceTimer() { +func TestRPCProxyInternal_refreshServerRebalanceTimer(t *testing.T) { + type clusterSizes struct { + numNodes int + numServers int + minRebalance time.Duration + } + clusters := []clusterSizes{ + {0, 3, 10 * time.Minute}, + {1, 0, 10 * time.Minute}, // partitioned cluster + {1, 3, 10 * time.Minute}, + {2, 3, 10 * time.Minute}, + {100, 0, 10 * time.Minute}, // partitioned + {100, 1, 10 * time.Minute}, // partitioned + {100, 3, 10 * time.Minute}, + {1024, 1, 10 * time.Minute}, // partitioned + {1024, 3, 10 * time.Minute}, // partitioned + {1024, 5, 10 * time.Minute}, + {16384, 1, 10 * time.Minute}, // partitioned + {16384, 2, 10 * time.Minute}, // partitioned + {16384, 3, 10 * time.Minute}, // partitioned + {16384, 5, 10 * time.Minute}, + {65535, 0, 10 * time.Minute}, // partitioned + {65535, 1, 10 * time.Minute}, // partitioned + {65535, 2, 10 * time.Minute}, // partitioned + {65535, 3, 10 * time.Minute}, // partitioned + {65535, 5, 10 * time.Minute}, // partitioned + {65535, 7, 10 * time.Minute}, + {1000000, 1, 10 * time.Minute}, // partitioned + {1000000, 2, 10 * time.Minute}, // partitioned + {1000000, 3, 10 * time.Minute}, // partitioned + {1000000, 5, 10 * time.Minute}, // partitioned + {1000000, 11, 10 * time.Minute}, // partitioned + {1000000, 19, 10 * time.Minute}, + } + + logger := log.New(os.Stderr, "", log.LstdFlags) + shutdownCh := make(chan struct{}) + + for i, s := range clusters { + p := NewRPCProxy(logger, shutdownCh, &fauxSerf{numNodes: s.numNodes}, &fauxConnPool{}) + for i := 0; i < s.numServers; i++ { + nodeName := fmt.Sprintf("s%02d", i) + p.activateEndpoint(&ServerEndpoint{Name: nodeName}) + } + + d := p.refreshServerRebalanceTimer() + if d < s.minRebalance { + t.Errorf("[%d] duration too short for cluster of size %d and %d servers (%s < %s)", i, s.numNodes, s.numServers, d, s.minRebalance) + } + } +} + +// func (p *RPCProxy) saveServerList(l serverList) { +func TestRPCProxyInternal_saveServerList(t *testing.T) { + p := testRPCProxy() + + // Initial condition + func() { + l := p.getServerList() + if len(l.L) != 0 { + t.Fatalf("RPCProxy.saveServerList failed to load init config") + } + + newServer := new(ServerEndpoint) + l.L = append(l.L, newServer) + p.saveServerList(l) + }() + + // Test that save works + func() { + l1 := p.getServerList() + t1NumServers := len(l1.L) + if t1NumServers != 1 { + t.Fatalf("RPCProxy.saveServerList failed to save mutated config") + } + }() + + // Verify mutation w/o a save doesn't alter the original + func() { + newServer := new(ServerEndpoint) + l := p.getServerList() + l.L = append(l.L, newServer) + + l_orig := p.getServerList() + origNumServers := len(l_orig.L) + if origNumServers >= len(l.L) { + t.Fatalf("RPCProxy.saveServerList unsaved config overwrote original") + } + }() +} diff -Nru nomad-0.3.2+dfsg/client/rpcproxy/server_endpoint.go nomad-0.4.0+dfsg/client/rpcproxy/server_endpoint.go --- nomad-0.3.2+dfsg/client/rpcproxy/server_endpoint.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/rpcproxy/server_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,84 @@ +package rpcproxy + +import ( + "fmt" + "net" + "strings" +) + +const ( + defaultNomadRPCPort = "4647" +) + +// EndpointKey is used in maps and for equality tests. A key is based on endpoints. +type EndpointKey struct { + name string +} + +// Equal compares two EndpointKey objects +func (k *EndpointKey) Equal(x *EndpointKey) bool { + return k.name == x.name +} + +// ServerEndpoint contains the address information for to connect to a Nomad +// server. +// +// TODO(sean@): Server is stubbed out so that in the future it can hold a +// reference to Node (and ultimately Node.ID). +type ServerEndpoint struct { + // Name is the unique lookup key for a Server instance + Name string + Host string + Port string + Addr net.Addr +} + +// Key returns the corresponding Key +func (s *ServerEndpoint) Key() *EndpointKey { + return &EndpointKey{ + name: s.Name, + } +} + +// NewServerEndpoint creates a new Server instance with a resolvable +// endpoint. `name` can be either an IP address or a DNS name. If `name` is +// a DNS name, it must be resolvable to an IP address (most inputs are IP +// addresses, not DNS names, but both work equally well when the name is +// resolvable). +func NewServerEndpoint(name string) (*ServerEndpoint, error) { + s := &ServerEndpoint{ + Name: name, + } + + var host, port string + var err error + host, port, err = net.SplitHostPort(name) + if err == nil { + s.Host = host + s.Port = port + } else { + if strings.Contains(err.Error(), "missing port") { + s.Host = name + s.Port = defaultNomadRPCPort + } else { + return nil, err + } + } + + if s.Addr, err = net.ResolveTCPAddr("tcp", net.JoinHostPort(s.Host, s.Port)); err != nil { + return nil, err + } + + return s, err +} + +// String returns a string representation of Server +func (s *ServerEndpoint) String() string { + var addrStr, networkStr string + if s.Addr != nil { + addrStr = s.Addr.String() + networkStr = s.Addr.Network() + } + + return fmt.Sprintf("%s (%s:%s)", s.Name, networkStr, addrStr) +} diff -Nru nomad-0.3.2+dfsg/client/rpcproxy/server_endpoint_test.go nomad-0.4.0+dfsg/client/rpcproxy/server_endpoint_test.go --- nomad-0.3.2+dfsg/client/rpcproxy/server_endpoint_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/rpcproxy/server_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,77 @@ +package rpcproxy + +import ( + "fmt" + "net" + "testing" +) + +// func (k *EndpointKey) Equal(x *EndpointKey) { +func TestServerEndpointKey_Equal(t *testing.T) { + tests := []struct { + name string + s1 *ServerEndpoint + s2 *ServerEndpoint + equal bool + }{ + { + name: "equal", + s1: &ServerEndpoint{Name: "k1"}, + s2: &ServerEndpoint{Name: "k1"}, + equal: true, + }, + { + name: "not equal", + s1: &ServerEndpoint{Name: "k1"}, + s2: &ServerEndpoint{Name: "k2"}, + equal: false, + }, + } + + for _, test := range tests { + if test.s1.Key().Equal(test.s2.Key()) != test.equal { + t.Errorf("fixture %s failed forward comparison", test.name) + } + + if test.s2.Key().Equal(test.s1.Key()) != test.equal { + t.Errorf("fixture %s failed reverse comparison", test.name) + } + } +} + +// func (k *ServerEndpoint) String() { +func TestServerEndpoint_String(t *testing.T) { + tests := []struct { + name string + s *ServerEndpoint + str string + }{ + { + name: "name", + s: &ServerEndpoint{Name: "s"}, + str: "s (:)", + }, + { + name: "name, host, port", + s: &ServerEndpoint{ + Name: "s", + Host: "127.0.0.1", + Port: "4647", + }, + str: "s (tcp:127.0.0.1:4647)", + }, + } + + for _, test := range tests { + if test.s.Addr == nil && (test.s.Host != "" && test.s.Port != "") { + fmt.Printf("Setting addr\n") + addr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(test.s.Host, test.s.Port)) + if err == nil { + test.s.Addr = addr + } + } + if test.s.String() != test.str { + t.Errorf("fixture %q failed: %q vs %q", test.name, test.s.String(), test.str) + } + } +} diff -Nru nomad-0.3.2+dfsg/client/stats/cpu.go nomad-0.4.0+dfsg/client/stats/cpu.go --- nomad-0.3.2+dfsg/client/stats/cpu.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/stats/cpu.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,62 @@ +package stats + +import ( + "runtime" + "time" + + shelpers "github.com/hashicorp/nomad/helper/stats" +) + +// CpuStats calculates cpu usage percentage +type CpuStats struct { + prevCpuTime float64 + prevTime time.Time + clkSpeed float64 + + totalCpus int +} + +// NewCpuStats returns a cpu stats calculator +func NewCpuStats() *CpuStats { + numCpus := runtime.NumCPU() + cpuStats := &CpuStats{ + totalCpus: numCpus, + } + return cpuStats +} + +// Percent calculates the cpu usage percentage based on the current cpu usage +// and the previous cpu usage where usage is given as time in nanoseconds spend +// in the cpu +func (c *CpuStats) Percent(cpuTime float64) float64 { + now := time.Now() + + if c.prevCpuTime == 0.0 { + // invoked first time + c.prevCpuTime = cpuTime + c.prevTime = now + return 0.0 + } + + timeDelta := now.Sub(c.prevTime).Nanoseconds() + ret := c.calculatePercent(c.prevCpuTime, cpuTime, timeDelta) + c.prevCpuTime = cpuTime + c.prevTime = now + return ret +} + +// TicksConsumed calculates the total ticks consumes by the process across all +// cpu cores +func (c *CpuStats) TicksConsumed(percent float64) float64 { + return (percent / 100) * shelpers.TotalTicksAvailable() / float64(c.totalCpus) +} + +func (c *CpuStats) calculatePercent(t1, t2 float64, timeDelta int64) float64 { + vDelta := t2 - t1 + if timeDelta <= 0 || vDelta <= 0.0 { + return 0.0 + } + + overall_percent := (vDelta / float64(timeDelta)) * 100.0 + return overall_percent +} diff -Nru nomad-0.3.2+dfsg/client/stats/cpu_test.go nomad-0.4.0+dfsg/client/stats/cpu_test.go --- nomad-0.3.2+dfsg/client/stats/cpu_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/stats/cpu_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,17 @@ +package stats + +import ( + "testing" + "time" +) + +func TestCpuStatsPercent(t *testing.T) { + cs := NewCpuStats() + cs.Percent(79.7) + time.Sleep(1 * time.Second) + percent := cs.Percent(80.69) + expectedPercent := 98.00 + if percent < expectedPercent && percent > (expectedPercent+1.00) { + t.Fatalf("expected: %v, actual: %v", expectedPercent, percent) + } +} diff -Nru nomad-0.3.2+dfsg/client/stats/host.go nomad-0.4.0+dfsg/client/stats/host.go --- nomad-0.3.2+dfsg/client/stats/host.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/stats/host.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,177 @@ +package stats + +import ( + "math" + "runtime" + "time" + + "github.com/shirou/gopsutil/cpu" + "github.com/shirou/gopsutil/disk" + "github.com/shirou/gopsutil/host" + "github.com/shirou/gopsutil/mem" + + shelpers "github.com/hashicorp/nomad/helper/stats" +) + +// HostStats represents resource usage stats of the host running a Nomad client +type HostStats struct { + Memory *MemoryStats + CPU []*CPUStats + DiskStats []*DiskStats + Uptime uint64 + Timestamp int64 + CPUTicksConsumed float64 +} + +// MemoryStats represnts stats related to virtual memory usage +type MemoryStats struct { + Total uint64 + Available uint64 + Used uint64 + Free uint64 +} + +// CPUStats represents stats related to cpu usage +type CPUStats struct { + CPU string + User float64 + System float64 + Idle float64 + Total float64 +} + +// DiskStats represents stats related to disk usage +type DiskStats struct { + Device string + Mountpoint string + Size uint64 + Used uint64 + Available uint64 + UsedPercent float64 + InodesUsedPercent float64 +} + +// HostStatsCollector collects host resource usage stats +type HostStatsCollector struct { + clkSpeed float64 + numCores int + statsCalculator map[string]*HostCpuStatsCalculator +} + +// NewHostStatsCollector returns a HostStatsCollector +func NewHostStatsCollector() *HostStatsCollector { + numCores := runtime.NumCPU() + statsCalculator := make(map[string]*HostCpuStatsCalculator) + collector := &HostStatsCollector{ + statsCalculator: statsCalculator, + numCores: numCores, + } + return collector +} + +// Collect collects stats related to resource usage of a host +func (h *HostStatsCollector) Collect() (*HostStats, error) { + hs := &HostStats{Timestamp: time.Now().UTC().UnixNano()} + if memStats, err := mem.VirtualMemory(); err == nil { + ms := &MemoryStats{ + Total: memStats.Total, + Available: memStats.Available, + Used: memStats.Used, + Free: memStats.Free, + } + hs.Memory = ms + } + + ticksConsumed := 0.0 + if cpuStats, err := cpu.Times(true); err == nil { + cs := make([]*CPUStats, len(cpuStats)) + for idx, cpuStat := range cpuStats { + percentCalculator, ok := h.statsCalculator[cpuStat.CPU] + if !ok { + percentCalculator = NewHostCpuStatsCalculator() + h.statsCalculator[cpuStat.CPU] = percentCalculator + } + idle, user, system, total := percentCalculator.Calculate(cpuStat) + cs[idx] = &CPUStats{ + CPU: cpuStat.CPU, + User: user, + System: system, + Idle: idle, + Total: total, + } + ticksConsumed += (total / 100) * (shelpers.TotalTicksAvailable() / float64(len(cpuStats))) + } + hs.CPU = cs + hs.CPUTicksConsumed = ticksConsumed + } + + if partitions, err := disk.Partitions(false); err == nil { + var diskStats []*DiskStats + for _, partition := range partitions { + if usage, err := disk.Usage(partition.Mountpoint); err == nil { + ds := DiskStats{ + Device: partition.Device, + Mountpoint: partition.Mountpoint, + Size: usage.Total, + Used: usage.Used, + Available: usage.Free, + UsedPercent: usage.UsedPercent, + InodesUsedPercent: usage.InodesUsedPercent, + } + if math.IsNaN(ds.UsedPercent) { + ds.UsedPercent = 0.0 + } + if math.IsNaN(ds.InodesUsedPercent) { + ds.InodesUsedPercent = 0.0 + } + diskStats = append(diskStats, &ds) + } + } + hs.DiskStats = diskStats + } + + if uptime, err := host.Uptime(); err == nil { + hs.Uptime = uptime + } + return hs, nil +} + +// HostCpuStatsCalculator calculates cpu usage percentages +type HostCpuStatsCalculator struct { + prevIdle float64 + prevUser float64 + prevSystem float64 + prevBusy float64 + prevTotal float64 +} + +// NewHostCpuStatsCalculator returns a HostCpuStatsCalculator +func NewHostCpuStatsCalculator() *HostCpuStatsCalculator { + return &HostCpuStatsCalculator{} +} + +// Calculate calculates the current cpu usage percentages +func (h *HostCpuStatsCalculator) Calculate(times cpu.TimesStat) (idle float64, user float64, system float64, total float64) { + currentIdle := times.Idle + currentUser := times.User + currentSystem := times.System + currentTotal := times.Total() + + deltaTotal := currentTotal - h.prevTotal + idle = ((currentIdle - h.prevIdle) / deltaTotal) * 100 + user = ((currentUser - h.prevUser) / deltaTotal) * 100 + system = ((currentSystem - h.prevSystem) / deltaTotal) * 100 + + currentBusy := times.User + times.System + times.Nice + times.Iowait + times.Irq + + times.Softirq + times.Steal + times.Guest + times.GuestNice + times.Stolen + + total = ((currentBusy - h.prevBusy) / deltaTotal) * 100 + + h.prevIdle = currentIdle + h.prevUser = currentUser + h.prevSystem = currentSystem + h.prevTotal = currentTotal + h.prevBusy = currentBusy + + return +} diff -Nru nomad-0.3.2+dfsg/client/structs/structs.go nomad-0.4.0+dfsg/client/structs/structs.go --- nomad-0.3.2+dfsg/client/structs/structs.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/client/structs/structs.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,97 @@ +package structs + +// MemoryStats holds memory usage related stats +type MemoryStats struct { + RSS uint64 + Cache uint64 + Swap uint64 + MaxUsage uint64 + KernelUsage uint64 + KernelMaxUsage uint64 + + // A list of fields whose values were actually sampled + Measured []string +} + +func (ms *MemoryStats) Add(other *MemoryStats) { + ms.RSS += other.RSS + ms.Cache += other.Cache + ms.Swap += other.Swap + ms.MaxUsage += other.MaxUsage + ms.KernelUsage += other.KernelUsage + ms.KernelMaxUsage += other.KernelMaxUsage + ms.Measured = joinStringSet(ms.Measured, other.Measured) +} + +// CpuStats holds cpu usage related stats +type CpuStats struct { + SystemMode float64 + UserMode float64 + TotalTicks float64 + ThrottledPeriods uint64 + ThrottledTime uint64 + Percent float64 + + // A list of fields whose values were actually sampled + Measured []string +} + +func (cs *CpuStats) Add(other *CpuStats) { + cs.SystemMode += other.SystemMode + cs.UserMode += other.UserMode + cs.TotalTicks += other.TotalTicks + cs.ThrottledPeriods += other.ThrottledPeriods + cs.ThrottledTime += other.ThrottledTime + cs.Percent += other.Percent + cs.Measured = joinStringSet(cs.Measured, other.Measured) +} + +// ResourceUsage holds information related to cpu and memory stats +type ResourceUsage struct { + MemoryStats *MemoryStats + CpuStats *CpuStats +} + +func (ru *ResourceUsage) Add(other *ResourceUsage) { + ru.MemoryStats.Add(other.MemoryStats) + ru.CpuStats.Add(other.CpuStats) +} + +// TaskResourceUsage holds aggregated resource usage of all processes in a Task +// and the resource usage of the individual pids +type TaskResourceUsage struct { + ResourceUsage *ResourceUsage + Timestamp int64 + Pids map[string]*ResourceUsage +} + +// AllocResourceUsage holds the aggregated task resource usage of the +// allocation. +type AllocResourceUsage struct { + // ResourceUsage is the summation of the task resources + ResourceUsage *ResourceUsage + + // Tasks contains the resource usage of each task + Tasks map[string]*TaskResourceUsage + + // The max timestamp of all the Tasks + Timestamp int64 +} + +// joinStringSet takes two slices of strings and joins them +func joinStringSet(s1, s2 []string) []string { + lookup := make(map[string]struct{}, len(s1)) + j := make([]string, 0, len(s1)) + for _, s := range s1 { + j = append(j, s) + lookup[s] = struct{}{} + } + + for _, s := range s2 { + if _, ok := lookup[s]; !ok { + j = append(j, s) + } + } + + return j +} diff -Nru nomad-0.3.2+dfsg/client/task_runner.go nomad-0.4.0+dfsg/client/task_runner.go --- nomad-0.3.2+dfsg/client/task_runner.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/task_runner.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,9 +7,12 @@ "log" "os" "path/filepath" + "strings" "sync" "time" + "github.com/armon/go-metrics" + "github.com/hashicorp/go-multierror" "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver" @@ -17,7 +20,8 @@ "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/nomad/client/driver/env" - cstructs "github.com/hashicorp/nomad/client/driver/structs" + dstructs "github.com/hashicorp/nomad/client/driver/structs" + cstructs "github.com/hashicorp/nomad/client/structs" ) const ( @@ -43,9 +47,17 @@ alloc *structs.Allocation restartTracker *RestartTracker - task *structs.Task - taskEnv *env.TaskEnvironment - updateCh chan *structs.Allocation + // running marks whether the task is running + running bool + runningLock sync.Mutex + + resourceUsage *cstructs.TaskResourceUsage + resourceUsageLock sync.RWMutex + + task *structs.Task + taskEnv *env.TaskEnvironment + updateCh chan *structs.Allocation + handle driver.DriverHandle handleLock sync.Mutex @@ -134,7 +146,13 @@ } // Restore fields - r.task = snap.Task + if snap.Task == nil { + err := fmt.Errorf("task runner snapshot include nil Task") + r.logger.Printf("[ERR] client: %v", err) + return err + } else { + r.task = snap.Task + } r.artifactsDownloaded = snap.ArtifactDownloaded if err := r.setTaskEnv(); err != nil { @@ -162,6 +180,10 @@ r.handleLock.Lock() r.handle = handle r.handleLock.Unlock() + + r.runningLock.Lock() + r.running = true + r.runningLock.Unlock() } return nil } @@ -200,7 +222,7 @@ // setTaskEnv sets the task environment. It returns an error if it could not be // created. func (r *TaskRunner) setTaskEnv() error { - taskEnv, err := driver.GetTaskEnv(r.ctx.AllocDir, r.config.Node, r.task, r.alloc) + taskEnv, err := driver.GetTaskEnv(r.ctx.AllocDir, r.config.Node, r.task.Copy(), r.alloc) if err != nil { return err } @@ -285,6 +307,7 @@ func (r *TaskRunner) run() { // Predeclare things so we an jump to the RESTART var handleEmpty bool + var stopCollection chan struct{} for { // Download the task's artifacts @@ -303,7 +326,7 @@ if err := getter.GetArtifact(r.taskEnv, artifact, taskDir, r.logger); err != nil { r.setState(structs.TaskStateDead, structs.NewTaskEvent(structs.TaskArtifactDownloadFailed).SetDownloadError(err)) - r.restartTracker.SetStartError(cstructs.NewRecoverableError(err, true)) + r.restartTracker.SetStartError(dstructs.NewRecoverableError(err, true)) goto RESTART } } @@ -317,6 +340,7 @@ r.handleLock.Lock() handleEmpty = r.handle == nil r.handleLock.Unlock() + if handleEmpty { startErr := r.startTask() r.restartTracker.SetStartError(startErr) @@ -324,10 +348,18 @@ r.setState(structs.TaskStateDead, structs.NewTaskEvent(structs.TaskDriverFailure).SetDriverError(startErr)) goto RESTART } + + // Mark the task as started + r.setState(structs.TaskStateRunning, structs.NewTaskEvent(structs.TaskStarted)) + r.runningLock.Lock() + r.running = true + r.runningLock.Unlock() } - // Mark the task as started - r.setState(structs.TaskStateRunning, structs.NewTaskEvent(structs.TaskStarted)) + if stopCollection == nil { + stopCollection = make(chan struct{}) + go r.collectResourceUsageStats(stopCollection) + } // Wait for updates WAIT: @@ -338,6 +370,13 @@ panic("nil wait") } + r.runningLock.Lock() + r.running = false + r.runningLock.Unlock() + + // Stop collection of the task's resource usage + close(stopCollection) + // Log whether the task was successful or not. r.restartTracker.SetWaitResult(waitRes) r.setState(structs.TaskStateDead, r.waitErrorToEvent(waitRes)) @@ -360,6 +399,9 @@ r.logger.Printf("[ERR] client: failed to kill task %q. Resources may have been leaked: %v", r.task.Name, err) } + // Stop collection of the task's resource usage + close(stopCollection) + // Store that the task has been destroyed and any associated error. r.setState(structs.TaskStateDead, structs.NewTaskEvent(structs.TaskKilled).SetKillError(err)) return @@ -409,10 +451,12 @@ // Clear the handle so a new driver will be created. r.handleLock.Lock() r.handle = nil + stopCollection = nil r.handleLock.Unlock() } } +// startTask creates the driver and start the task. func (r *TaskRunner) startTask() error { // Create a driver driver, err := r.createDriver() @@ -436,6 +480,54 @@ return nil } +// collectResourceUsageStats starts collecting resource usage stats of a Task. +// Collection ends when the passed channel is closed +func (r *TaskRunner) collectResourceUsageStats(stopCollection <-chan struct{}) { + // start collecting the stats right away and then start collecting every + // collection interval + next := time.NewTimer(0) + defer next.Stop() + for { + select { + case <-next.C: + ru, err := r.handle.Stats() + next.Reset(r.config.StatsCollectionInterval) + + if err != nil { + // We do not log when the plugin is shutdown as this is simply a + // race between the stopCollection channel being closed and calling + // Stats on the handle. + if !strings.Contains(err.Error(), "connection is shut down") { + r.logger.Printf("[WARN] client: error fetching stats of task %v: %v", r.task.Name, err) + } + continue + } + + r.resourceUsageLock.Lock() + r.resourceUsage = ru + r.resourceUsageLock.Unlock() + r.emitStats(ru) + case <-stopCollection: + return + } + } +} + +// LatestResourceUsage returns the last resource utilization datapoint collected +func (r *TaskRunner) LatestResourceUsage() *cstructs.TaskResourceUsage { + r.resourceUsageLock.RLock() + defer r.resourceUsageLock.RUnlock() + r.runningLock.Lock() + defer r.runningLock.Unlock() + + // If the task is not running there can be no latest resource + if !r.running { + return nil + } + + return r.resourceUsage +} + // handleUpdate takes an updated allocation and updates internal state to // reflect the new config for the task. func (r *TaskRunner) handleUpdate(update *structs.Allocation) error { @@ -506,7 +598,7 @@ } // Helper function for converting a WaitResult into a TaskTerminated event. -func (r *TaskRunner) waitErrorToEvent(res *cstructs.WaitResult) *structs.TaskEvent { +func (r *TaskRunner) waitErrorToEvent(res *dstructs.WaitResult) *structs.TaskEvent { return structs.NewTaskEvent(structs.TaskTerminated). SetExitCode(res.ExitCode). SetSignal(res.Signal). @@ -534,3 +626,27 @@ r.destroy = true close(r.destroyCh) } + +// emitStats emits resource usage stats of tasks to remote metrics collector +// sinks +func (r *TaskRunner) emitStats(ru *cstructs.TaskResourceUsage) { + if ru.ResourceUsage.MemoryStats != nil { + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "rss"}, float32(ru.ResourceUsage.MemoryStats.RSS)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "cache"}, float32(ru.ResourceUsage.MemoryStats.Cache)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "swap"}, float32(ru.ResourceUsage.MemoryStats.Swap)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "max_usage"}, float32(ru.ResourceUsage.MemoryStats.MaxUsage)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "kernel_usage"}, float32(ru.ResourceUsage.MemoryStats.KernelUsage)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "memory", "kernel_max_usage"}, float32(ru.ResourceUsage.MemoryStats.KernelMaxUsage)) + } + + if ru.ResourceUsage.CpuStats != nil { + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "total_percent"}, float32(ru.ResourceUsage.CpuStats.Percent)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "system"}, float32(ru.ResourceUsage.CpuStats.SystemMode)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "user"}, float32(ru.ResourceUsage.CpuStats.UserMode)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "throttled_time"}, float32(ru.ResourceUsage.CpuStats.ThrottledTime)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "throttled_periods"}, float32(ru.ResourceUsage.CpuStats.ThrottledPeriods)) + metrics.SetGauge([]string{"client", "allocs", r.alloc.Job.Name, r.alloc.TaskGroup, r.alloc.ID, r.task.Name, "cpu", "total_ticks"}, float32(ru.ResourceUsage.CpuStats.TotalTicks)) + } + + //TODO Add Pid stats when we add an API to enable/disable them +} diff -Nru nomad-0.3.2+dfsg/client/task_runner_test.go nomad-0.4.0+dfsg/client/task_runner_test.go --- nomad-0.3.2+dfsg/client/task_runner_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/task_runner_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -11,6 +11,7 @@ "time" "github.com/hashicorp/nomad/client/allocdir" + "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/client/driver" "github.com/hashicorp/nomad/nomad/mock" "github.com/hashicorp/nomad/nomad/structs" @@ -45,7 +46,7 @@ // the passed allocation. func testTaskRunnerFromAlloc(restarts bool, alloc *structs.Allocation) (*MockTaskStateUpdater, *TaskRunner) { logger := testLogger() - conf := DefaultConfig() + conf := config.DefaultConfig() conf.StateDir = os.TempDir() conf.AllocDir = os.TempDir() upd := &MockTaskStateUpdater{} @@ -129,6 +130,13 @@ t.Fatalf("err: %v", err) }) + // Make sure we are collecting afew stats + time.Sleep(2 * time.Second) + stats := tr.LatestResourceUsage() + if len(stats.Pids) == 0 || stats.ResourceUsage == nil || stats.ResourceUsage.MemoryStats.RSS == 0 { + t.Fatalf("expected task runner to have some stats") + } + // Begin the tear down tr.Destroy() @@ -395,5 +403,4 @@ if err := tr.validateTask(); err != nil { t.Fatalf("unexpected error: %v", err) } - } diff -Nru nomad-0.3.2+dfsg/client/util.go nomad-0.4.0+dfsg/client/util.go --- nomad-0.3.2+dfsg/client/util.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/util.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,7 +7,6 @@ "math/rand" "os" "path/filepath" - "time" "github.com/hashicorp/nomad/nomad/structs" ) @@ -69,11 +68,6 @@ return result } -// Returns a random stagger interval between 0 and the duration -func randomStagger(intv time.Duration) time.Duration { - return time.Duration(uint64(rand.Int63()) % uint64(intv)) -} - // shuffleStrings randomly shuffles the list of strings func shuffleStrings(list []string) { for i := range list { @@ -91,8 +85,12 @@ if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil { return fmt.Errorf("failed to make dirs for %s: %v", path, err) } - if err := ioutil.WriteFile(path, buf, 0600); err != nil { - return fmt.Errorf("failed to save state: %v", err) + tmpPath := path + ".tmp" + if err := ioutil.WriteFile(tmpPath, buf, 0600); err != nil { + return fmt.Errorf("failed to save state to tmp: %v", err) + } + if err := os.Rename(tmpPath, path); err != nil { + return fmt.Errorf("failed to rename tmp to path: %v", err) } return nil } diff -Nru nomad-0.3.2+dfsg/client/util_test.go nomad-0.4.0+dfsg/client/util_test.go --- nomad-0.3.2+dfsg/client/util_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/client/util_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -6,7 +6,6 @@ "path/filepath" "reflect" "testing" - "time" "github.com/hashicorp/nomad/nomad/mock" "github.com/hashicorp/nomad/nomad/structs" @@ -56,17 +55,6 @@ } } -func TestRandomStagger(t *testing.T) { - t.Parallel() - intv := time.Minute - for i := 0; i < 10; i++ { - stagger := randomStagger(intv) - if stagger < 0 || stagger >= intv { - t.Fatalf("Bad: %v", stagger) - } - } -} - func TestShuffleStrings(t *testing.T) { t.Parallel() // Generate input diff -Nru nomad-0.3.2+dfsg/command/agent/agent_endpoint.go nomad-0.4.0+dfsg/command/agent/agent_endpoint.go --- nomad-0.3.2+dfsg/command/agent/agent_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/agent_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -119,6 +119,9 @@ return nil, err } +// AgentServersRequest is used to query the list of servers used by the Nomad +// Client for RPCs. This endpoint can also be used to update the list of +// servers for a given agent. func (s *HTTPServer) AgentServersRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) { switch req.Method { case "PUT", "POST": @@ -136,8 +139,8 @@ return nil, CodedError(501, ErrInvalidMethod) } - // Get the current list of servers - return client.Servers(), nil + peers := s.agent.client.RPCProxy().ServerRPCAddrs() + return peers, nil } func (s *HTTPServer) updateServers(resp http.ResponseWriter, req *http.Request) (interface{}, error) { @@ -153,7 +156,13 @@ } // Set the servers list into the client - client.SetServers(servers) + for _, server := range servers { + s.agent.logger.Printf("[TRACE] Adding server %s to the client's primary server list", server) + se := client.AddPrimaryServerToRPCProxy(server) + if se == nil { + s.agent.logger.Printf("[ERR] Attempt to add server %q to client failed", server) + } + } return nil, nil } diff -Nru nomad-0.3.2+dfsg/command/agent/agent_endpoint_test.go nomad-0.4.0+dfsg/command/agent/agent_endpoint_test.go --- nomad-0.3.2+dfsg/command/agent/agent_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/agent_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -107,21 +107,35 @@ func TestHTTP_AgentSetServers(t *testing.T) { httpTest(t, nil, func(s *TestServer) { + // Establish a baseline number of servers + req, err := http.NewRequest("GET", "/v1/agent/servers", nil) + if err != nil { + t.Fatalf("err: %s", err) + } + respW := httptest.NewRecorder() + + // Make the request and check the result + out, err := s.Server.AgentServersRequest(respW, req) + if err != nil { + t.Fatalf("err: %s", err) + } + numServers := len(out.([]string)) + // Create the request - req, err := http.NewRequest("PUT", "/v1/agent/servers", nil) + req, err = http.NewRequest("PUT", "/v1/agent/servers", nil) if err != nil { t.Fatalf("err: %s", err) } // Send the request - respW := httptest.NewRecorder() + respW = httptest.NewRecorder() _, err = s.Server.AgentServersRequest(respW, req) if err == nil || !strings.Contains(err.Error(), "missing server address") { t.Fatalf("expected missing servers error, got: %#v", err) } // Create a valid request - req, err = http.NewRequest("PUT", "/v1/agent/servers?address=foo&address=bar", nil) + req, err = http.NewRequest("PUT", "/v1/agent/servers?address=127.0.0.1%3A4647&address=127.0.0.2%3A4647", nil) if err != nil { t.Fatalf("err: %s", err) } @@ -141,16 +155,31 @@ respW = httptest.NewRecorder() // Make the request and check the result - out, err := s.Server.AgentServersRequest(respW, req) + expected := map[string]bool{ + "127.0.0.1:4647": true, + "127.0.0.2:4647": true, + } + out, err = s.Server.AgentServersRequest(respW, req) if err != nil { t.Fatalf("err: %s", err) } servers := out.([]string) - if n := len(servers); n != 2 { - t.Fatalf("expected 2 servers, got: %d", n) + if n := len(servers); n != numServers+2 { + t.Fatalf("expected %d servers, got: %d: %v", numServers+2, n, servers) + } + received := make(map[string]bool, len(servers)) + for _, server := range servers { + received[server] = true + } + foundCount := 0 + for k, _ := range received { + _, found := expected[k] + if found { + foundCount++ + } } - if servers[0] != "foo:4647" || servers[1] != "bar:4647" { - t.Fatalf("bad servers result: %v", servers) + if foundCount != len(expected) { + t.Fatalf("bad servers result") } }) } diff -Nru nomad-0.3.2+dfsg/command/agent/agent.go nomad-0.4.0+dfsg/command/agent/agent.go --- nomad-0.3.2+dfsg/command/agent/agent.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/agent.go 2016-06-28 21:26:34.000000000 +0000 @@ -5,18 +5,32 @@ "io" "log" "net" - "os" "path/filepath" "runtime" + "strconv" + "strings" "sync" + "sync/atomic" "time" "github.com/hashicorp/nomad/client" clientconfig "github.com/hashicorp/nomad/client/config" + "github.com/hashicorp/nomad/command/agent/consul" "github.com/hashicorp/nomad/nomad" "github.com/hashicorp/nomad/nomad/structs" ) +const ( + clientHttpCheckInterval = 10 * time.Second + clientHttpCheckTimeout = 3 * time.Second + serverHttpCheckInterval = 10 * time.Second + serverHttpCheckTimeout = 3 * time.Second + serverRpcCheckInterval = 10 * time.Second + serverRpcCheckTimeout = 3 * time.Second + serverSerfCheckInterval = 10 * time.Second + serverSerfCheckTimeout = 3 * time.Second +) + // Agent is a long running daemon that is used to run both // clients and servers. Servers are responsible for managing // state and making scheduling decisions. Clients can be @@ -27,8 +41,16 @@ logger *log.Logger logOutput io.Writer - server *nomad.Server - client *client.Client + // consulSyncer registers the Nomad agent with the Consul Agent + consulSyncer *consul.Syncer + + client *client.Client + clientHTTPAddr string + + server *nomad.Server + serverHTTPAddr string + serverRPCAddr string + serverSerfAddr string shutdown bool shutdownCh chan struct{} @@ -37,18 +59,16 @@ // NewAgent is used to create a new agent with the given configuration func NewAgent(config *Config, logOutput io.Writer) (*Agent, error) { - // Ensure we have a log sink - if logOutput == nil { - logOutput = os.Stderr - } - a := &Agent{ config: config, - logger: log.New(logOutput, "", log.LstdFlags), + logger: log.New(logOutput, "", log.LstdFlags|log.Lmicroseconds), logOutput: logOutput, shutdownCh: make(chan struct{}), } + if err := a.setupConsulSyncer(); err != nil { + return nil, fmt.Errorf("Failed to initialize Consul syncer task: %v", err) + } if err := a.setupServer(); err != nil { return nil, err } @@ -58,6 +78,16 @@ if a.client == nil && a.server == nil { return nil, fmt.Errorf("must have at least client or server mode enabled") } + + // The Nomad Agent runs the consul.Syncer regardless of whether or not the + // Agent is running in Client or Server mode (or both), and regardless of + // the consul.auto_advertise parameter. The Client and Server both reuse the + // same consul.Syncer instance. This Syncer task periodically executes + // callbacks that update Consul. The reason the Syncer is always running is + // because one of the callbacks is attempts to self-bootstrap Nomad using + // information found in Consul. + go a.consulSyncer.Run() + return a, nil } @@ -84,7 +114,7 @@ if a.config.Server.BootstrapExpect == 1 { conf.Bootstrap = true } else { - conf.BootstrapExpect = a.config.Server.BootstrapExpect + atomic.StoreInt32(&conf.BootstrapExpect, int32(a.config.Server.BootstrapExpect)) } } if a.config.DataDir != "" { @@ -141,6 +171,54 @@ conf.SerfConfig.MemberlistConfig.BindPort = port } + // Resolve the Server's HTTP Address + if a.config.AdvertiseAddrs.HTTP != "" { + a.serverHTTPAddr = a.config.AdvertiseAddrs.HTTP + } else if a.config.Addresses.HTTP != "" { + a.serverHTTPAddr = fmt.Sprintf("%v:%v", a.config.Addresses.HTTP, a.config.Ports.HTTP) + } else if a.config.BindAddr != "" { + a.serverHTTPAddr = fmt.Sprintf("%v:%v", a.config.BindAddr, a.config.Ports.HTTP) + } else { + a.serverHTTPAddr = fmt.Sprintf("%v:%v", "127.0.0.1", a.config.Ports.HTTP) + } + addr, err := net.ResolveTCPAddr("tcp", a.serverHTTPAddr) + if err != nil { + return nil, fmt.Errorf("error resolving HTTP addr %+q: %v", a.serverHTTPAddr, err) + } + a.serverHTTPAddr = fmt.Sprintf("%s:%d", addr.IP.String(), addr.Port) + + // Resolve the Server's RPC Address + if a.config.AdvertiseAddrs.RPC != "" { + a.serverRPCAddr = a.config.AdvertiseAddrs.RPC + } else if a.config.Addresses.RPC != "" { + a.serverRPCAddr = fmt.Sprintf("%v:%v", a.config.Addresses.RPC, a.config.Ports.RPC) + } else if a.config.BindAddr != "" { + a.serverRPCAddr = fmt.Sprintf("%v:%v", a.config.BindAddr, a.config.Ports.RPC) + } else { + a.serverRPCAddr = fmt.Sprintf("%v:%v", "127.0.0.1", a.config.Ports.RPC) + } + addr, err = net.ResolveTCPAddr("tcp", a.serverRPCAddr) + if err != nil { + return nil, fmt.Errorf("error resolving RPC addr %+q: %v", a.serverRPCAddr, err) + } + a.serverRPCAddr = fmt.Sprintf("%s:%d", addr.IP.String(), addr.Port) + + // Resolve the Server's Serf Address + if a.config.AdvertiseAddrs.Serf != "" { + a.serverSerfAddr = a.config.AdvertiseAddrs.Serf + } else if a.config.Addresses.Serf != "" { + a.serverSerfAddr = fmt.Sprintf("%v:%v", a.config.Addresses.Serf, a.config.Ports.Serf) + } else if a.config.BindAddr != "" { + a.serverSerfAddr = fmt.Sprintf("%v:%v", a.config.BindAddr, a.config.Ports.Serf) + } else { + a.serverSerfAddr = fmt.Sprintf("%v:%v", "127.0.0.1", a.config.Ports.Serf) + } + addr, err = net.ResolveTCPAddr("tcp", a.serverSerfAddr) + if err != nil { + return nil, fmt.Errorf("error resolving Serf addr %+q: %v", a.serverSerfAddr, err) + } + a.serverSerfAddr = fmt.Sprintf("%s:%d", addr.IP.String(), addr.Port) + if gcThreshold := a.config.Server.NodeGCThreshold; gcThreshold != "" { dur, err := time.ParseDuration(gcThreshold) if err != nil { @@ -157,16 +235,22 @@ conf.HeartbeatGrace = dur } + if a.config.Consul.AutoAdvertise && a.config.Consul.ServerServiceName == "" { + return nil, fmt.Errorf("server_service_name must be set when auto_advertise is enabled") + } + + conf.ConsulConfig = a.config.Consul + return conf, nil } // clientConfig is used to generate a new client configuration struct -// for initializing a nomad client. +// for initializing a Nomad client. func (a *Agent) clientConfig() (*clientconfig.Config, error) { // Setup the configuration conf := a.config.ClientConfig if conf == nil { - conf = client.DefaultConfig() + conf = clientconfig.DefaultConfig() } if a.server != nil { conf.RPCHandler = a.server @@ -191,6 +275,21 @@ conf.NetworkInterface = a.config.Client.NetworkInterface } conf.Options = a.config.Client.Options + // Logging deprecation messages about consul related configuration in client + // options + var invalidConsulKeys []string + for key := range conf.Options { + if strings.HasPrefix(key, "consul") { + invalidConsulKeys = append(invalidConsulKeys, fmt.Sprintf("options.%s", key)) + } + } + if len(invalidConsulKeys) > 0 { + a.logger.Printf("[WARN] agent: Invalid keys: %v", strings.Join(invalidConsulKeys, ",")) + a.logger.Printf(`Nomad client ignores consul related configuration in client options. + Please refer to the guide https://www.nomadproject.io/docs/agent/config.html#consul_options + to configure Nomad to work with Consul.`) + } + if a.config.Client.NetworkSpeed != 0 { conf.NetworkSpeed = a.config.Client.NetworkSpeed } @@ -211,21 +310,23 @@ conf.Node.Meta = a.config.Client.Meta conf.Node.NodeClass = a.config.Client.NodeClass - // Setting the proper HTTP Addr - httpAddr := fmt.Sprintf("%s:%d", a.config.BindAddr, a.config.Ports.HTTP) - if a.config.Addresses.HTTP != "" && a.config.AdvertiseAddrs.HTTP == "" { - httpAddr = fmt.Sprintf("%s:%d", a.config.Addresses.HTTP, a.config.Ports.HTTP) - if _, err := net.ResolveTCPAddr("tcp", httpAddr); err != nil { - return nil, fmt.Errorf("error resolving http addr: %v:", err) - } - } else if a.config.AdvertiseAddrs.HTTP != "" { - addr, err := net.ResolveTCPAddr("tcp", a.config.AdvertiseAddrs.HTTP) - if err != nil { - return nil, fmt.Errorf("error resolving advertise http addr: %v", err) - } - httpAddr = fmt.Sprintf("%s:%d", addr.IP.String(), addr.Port) + // Resolve the Client's HTTP address + if a.config.AdvertiseAddrs.HTTP != "" { + a.clientHTTPAddr = a.config.AdvertiseAddrs.HTTP + } else if a.config.Addresses.HTTP != "" { + a.clientHTTPAddr = fmt.Sprintf("%v:%v", a.config.Addresses.HTTP, a.config.Ports.HTTP) + } else if a.config.BindAddr != "" { + a.clientHTTPAddr = fmt.Sprintf("%v:%v", a.config.BindAddr, a.config.Ports.HTTP) + } else { + a.clientHTTPAddr = fmt.Sprintf("%v:%v", "127.0.0.1", a.config.Ports.HTTP) + } + addr, err := net.ResolveTCPAddr("tcp", a.clientHTTPAddr) + if err != nil { + return nil, fmt.Errorf("error resolving HTTP addr %+q: %v", a.clientHTTPAddr, err) } + httpAddr := fmt.Sprintf("%s:%d", addr.IP.String(), addr.Port) conf.Node.HTTPAddr = httpAddr + a.clientHTTPAddr = httpAddr // Reserve resources on the node. r := conf.Node.Reserved @@ -242,6 +343,12 @@ conf.Version = fmt.Sprintf("%s%s", a.config.Version, a.config.VersionPrerelease) conf.Revision = a.config.Revision + if a.config.Consul.AutoAdvertise && a.config.Consul.ClientServiceName == "" { + return nil, fmt.Errorf("client_service_name must be set when auto_advertise is enabled") + } + + conf.ConsulConfig = a.config.Consul + conf.StatsCollectionInterval = a.config.Telemetry.collectionInterval return conf, nil } @@ -258,12 +365,62 @@ } // Create the server - server, err := nomad.NewServer(conf) + server, err := nomad.NewServer(conf, a.consulSyncer, a.logger) if err != nil { return fmt.Errorf("server setup failed: %v", err) } - a.server = server + + // Create the Nomad Server services for Consul + if a.config.Consul.AutoAdvertise { + httpServ := &structs.Service{ + Name: a.config.Consul.ServerServiceName, + PortLabel: a.serverHTTPAddr, + Tags: []string{consul.ServiceTagHTTP}, + Checks: []*structs.ServiceCheck{ + &structs.ServiceCheck{ + Name: "Nomad Server HTTP Check", + Type: "http", + Path: "/v1/status/peers", + Protocol: "http", // TODO TLS + Interval: serverHttpCheckInterval, + Timeout: serverHttpCheckTimeout, + }, + }, + } + rpcServ := &structs.Service{ + Name: a.config.Consul.ServerServiceName, + PortLabel: a.serverRPCAddr, + Tags: []string{consul.ServiceTagRPC}, + Checks: []*structs.ServiceCheck{ + &structs.ServiceCheck{ + Name: "Nomad Server RPC Check", + Type: "tcp", + Interval: serverRpcCheckInterval, + Timeout: serverRpcCheckTimeout, + }, + }, + } + serfServ := &structs.Service{ + PortLabel: a.serverSerfAddr, + Name: a.config.Consul.ServerServiceName, + Tags: []string{consul.ServiceTagSerf}, + Checks: []*structs.ServiceCheck{ + &structs.ServiceCheck{ + Name: "Nomad Server Serf Check", + Type: "tcp", + Interval: serverSerfCheckInterval, + Timeout: serverSerfCheckTimeout, + }, + }, + } + a.consulSyncer.SetServices(consul.ServerDomain, map[consul.ServiceKey]*structs.Service{ + consul.GenerateServiceKey(httpServ): httpServ, + consul.GenerateServiceKey(rpcServ): rpcServ, + consul.GenerateServiceKey(serfServ): serfServ, + }) + } + return nil } @@ -287,15 +444,38 @@ } // Create the client - client, err := client.NewClient(conf) + client, err := client.NewClient(conf, a.consulSyncer, a.logger) if err != nil { return fmt.Errorf("client setup failed: %v", err) } a.client = client + + // Create the Nomad Client services for Consul + if a.config.Consul.AutoAdvertise { + httpServ := &structs.Service{ + Name: a.config.Consul.ClientServiceName, + PortLabel: a.clientHTTPAddr, + Tags: []string{consul.ServiceTagHTTP}, + Checks: []*structs.ServiceCheck{ + &structs.ServiceCheck{ + Name: "Nomad Client HTTP Check", + Type: "http", + Path: "/v1/agent/servers", + Protocol: "http", // TODO TLS + Interval: clientHttpCheckInterval, + Timeout: clientHttpCheckTimeout, + }, + }, + } + a.consulSyncer.SetServices(consul.ClientDomain, map[consul.ServiceKey]*structs.Service{ + consul.GenerateServiceKey(httpServ): httpServ, + }) + } + return nil } -// reservePortsForClient reservers a range of ports for the client to use when +// reservePortsForClient reserves a range of ports for the client to use when // it creates various plugins for log collection, executors, drivers, etc func (a *Agent) reservePortsForClient(conf *clientconfig.Config) error { // finding the device name for loopback @@ -403,6 +583,10 @@ } } + if err := a.consulSyncer.Shutdown(); err != nil { + a.logger.Printf("[ERR] agent: shutting down consul service failed: %v", err) + } + a.logger.Println("[INFO] agent: shutdown complete") a.shutdown = true close(a.shutdownCh) @@ -445,3 +629,47 @@ } return stats } + +// setupConsulSyncer creates the Consul tasks used by this Nomad Agent +// (either Client or Server mode). +func (a *Agent) setupConsulSyncer() error { + var err error + a.consulSyncer, err = consul.NewSyncer(a.config.Consul, a.shutdownCh, a.logger) + if err != nil { + return err + } + + a.consulSyncer.SetAddrFinder(func(portLabel string) (string, int) { + host, port, err := net.SplitHostPort(portLabel) + if err != nil { + p, err := strconv.Atoi(port) + if err != nil { + return "", 0 + } + return "", p + } + + // If the addr for the service is ":port", then we fall back + // to Nomad's default address resolution protocol. + // + // TODO(sean@): This should poll Consul to figure out what + // its advertise address is and use that in order to handle + // the case where there is something funky like NAT on this + // host. For now we just use the BindAddr if set, otherwise + // we fall back to a loopback addr. + if host == "" { + if a.config.BindAddr != "" { + host = a.config.BindAddr + } else { + host = "127.0.0.1" + } + } + p, err := strconv.Atoi(port) + if err != nil { + return host, 0 + } + return host, p + }) + + return nil +} diff -Nru nomad-0.3.2+dfsg/command/agent/agent_test.go nomad-0.4.0+dfsg/command/agent/agent_test.go --- nomad-0.3.2+dfsg/command/agent/agent_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/agent_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -10,6 +10,7 @@ "time" "github.com/hashicorp/nomad/nomad" + sconfig "github.com/hashicorp/nomad/nomad/structs/config" ) var nextPort uint32 = 17000 @@ -18,7 +19,7 @@ return int(atomic.AddUint32(&nextPort, 1)) } -func tmpDir(t *testing.T) string { +func tmpDir(t testing.TB) string { dir, err := ioutil.TempDir("", "nomad") if err != nil { t.Fatalf("err: %v", err) @@ -26,7 +27,7 @@ return dir } -func makeAgent(t *testing.T, cb func(*Config)) (string, *Agent) { +func makeAgent(t testing.TB, cb func(*Config)) (string, *Agent) { dir := tmpDir(t) conf := DevConfig() @@ -42,6 +43,7 @@ Serf: getPort(), } conf.NodeName = fmt.Sprintf("Node %d", conf.Ports.RPC) + conf.Consul = sconfig.DefaultConsulConfig() // Tighten the Serf timing config.SerfConfig.MemberlistConfig.SuspicionMult = 2 @@ -99,6 +101,7 @@ t.Fatalf("expected rpc address error, got: %#v", err) } conf.AdvertiseAddrs.RPC = "127.0.0.1:4001" + conf.AdvertiseAddrs.HTTP = "10.10.11.1:4005" // Parses the advertise addrs correctly out, err := a.serverConfig() @@ -116,6 +119,12 @@ if addr := out.RPCAdvertise; addr.IP.String() != "127.0.0.1" || addr.Port != 4001 { t.Fatalf("bad rpc advertise addr: %#v", addr) } + if addr := a.serverHTTPAddr; addr != "10.10.11.1:4005" { + t.Fatalf("expect 10.11.11.1:4005, got: %v", addr) + } + if addr := a.serverRPCAddr; addr != "127.0.0.1:4001" { + t.Fatalf("expect 127.0.0.1:4001, got: %v", addr) + } // Sets up the ports properly conf.Ports.RPC = 4003 @@ -132,10 +141,12 @@ t.Fatalf("expect 4004, got: %d", port) } - // Prefers the most specific bind addrs + // Prefers advertise over bind addr conf.BindAddr = "127.0.0.3" conf.Addresses.RPC = "127.0.0.2" conf.Addresses.Serf = "127.0.0.2" + conf.Addresses.HTTP = "127.0.0.2" + conf.AdvertiseAddrs.HTTP = "" out, err = a.serverConfig() if err != nil { @@ -147,6 +158,16 @@ if addr := out.SerfConfig.MemberlistConfig.BindAddr; addr != "127.0.0.2" { t.Fatalf("expect 127.0.0.2, got: %s", addr) } + if addr := a.serverHTTPAddr; addr != "127.0.0.2:4646" { + t.Fatalf("expect 127.0.0.2:4646, got: %s", addr) + } + // NOTE: AdvertiseAddr > Addresses > BindAddr > Defaults + if addr := a.serverRPCAddr; addr != "127.0.0.1:4001" { + t.Fatalf("expect 127.0.0.1:4001, got: %s", addr) + } + if addr := a.serverSerfAddr; addr != "127.0.0.1:4000" { + t.Fatalf("expect 127.0.0.1:4000, got: %s", addr) + } conf.Server.NodeGCThreshold = "42g" out, err = a.serverConfig() @@ -173,6 +194,13 @@ // Defaults to the global bind addr conf.Addresses.RPC = "" conf.Addresses.Serf = "" + conf.Addresses.HTTP = "" + conf.AdvertiseAddrs.RPC = "" + conf.AdvertiseAddrs.HTTP = "" + conf.AdvertiseAddrs.Serf = "" + conf.Ports.HTTP = 4646 + conf.Ports.RPC = 4647 + conf.Ports.Serf = 4648 out, err = a.serverConfig() if err != nil { t.Fatalf("err: %s", err) @@ -183,6 +211,15 @@ if addr := out.SerfConfig.MemberlistConfig.BindAddr; addr != "127.0.0.3" { t.Fatalf("expect 127.0.0.3, got: %s", addr) } + if addr := a.serverHTTPAddr; addr != "127.0.0.3:4646" { + t.Fatalf("expect 127.0.0.3:4646, got: %s", addr) + } + if addr := a.serverRPCAddr; addr != "127.0.0.3:4647" { + t.Fatalf("expect 127.0.0.3:4647, got: %s", addr) + } + if addr := a.serverSerfAddr; addr != "127.0.0.3:4648" { + t.Fatalf("expect 127.0.0.3:4648, got: %s", addr) + } // Properly handles the bootstrap flags conf.Server.BootstrapExpect = 1 diff -Nru nomad-0.3.2+dfsg/command/agent/alloc_endpoint.go nomad-0.4.0+dfsg/command/agent/alloc_endpoint.go --- nomad-0.3.2+dfsg/command/agent/alloc_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/alloc_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,6 +7,10 @@ "github.com/hashicorp/nomad/nomad/structs" ) +const ( + allocNotFoundErr = "allocation not found" +) + func (s *HTTPServer) AllocsRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) { if req.Method != "GET" { return nil, CodedError(405, ErrInvalidMethod) @@ -53,3 +57,29 @@ } return out.Alloc, nil } + +func (s *HTTPServer) ClientAllocRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) { + if s.agent.client == nil { + return nil, clientNotRunning + } + + reqSuffix := strings.TrimPrefix(req.URL.Path, "/v1/client/allocation/") + + // tokenize the suffix of the path to get the alloc id and find the action + // invoked on the alloc id + tokens := strings.Split(reqSuffix, "/") + if len(tokens) == 1 || tokens[1] != "stats" { + return nil, CodedError(404, allocNotFoundErr) + } + allocID := tokens[0] + + // Get the stats reporter + clientStats := s.agent.client.StatsReporter() + aStats, err := clientStats.GetAllocStats(allocID) + if err != nil { + return nil, err + } + + task := req.URL.Query().Get("task") + return aStats.LatestAllocStats(task) +} diff -Nru nomad-0.3.2+dfsg/command/agent/alloc_endpoint_test.go nomad-0.4.0+dfsg/command/agent/alloc_endpoint_test.go --- nomad-0.3.2+dfsg/command/agent/alloc_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/alloc_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -3,6 +3,7 @@ import ( "net/http" "net/http/httptest" + "strings" "testing" "github.com/hashicorp/nomad/nomad/mock" @@ -146,3 +147,20 @@ } }) } + +func TestHTTP_AllocStats(t *testing.T) { + httpTest(t, nil, func(s *TestServer) { + // Make the HTTP request + req, err := http.NewRequest("GET", "/v1/client/allocation/123/foo", nil) + if err != nil { + t.Fatalf("err: %v", err) + } + respW := httptest.NewRecorder() + + // Make the request + _, err = s.Server.ClientAllocRequest(respW, req) + if !strings.Contains(err.Error(), allocNotFoundErr) { + t.Fatalf("err: %v", err) + } + }) +} diff -Nru nomad-0.3.2+dfsg/command/agent/command.go nomad-0.4.0+dfsg/command/agent/command.go --- nomad-0.3.2+dfsg/command/agent/command.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/command.go 2016-06-28 21:26:34.000000000 +0000 @@ -16,12 +16,13 @@ "time" "github.com/armon/go-metrics" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/go-checkpoint" "github.com/hashicorp/go-syslog" "github.com/hashicorp/logutils" "github.com/hashicorp/nomad/helper/flag-slice" "github.com/hashicorp/nomad/helper/gated-writer" - scada "github.com/hashicorp/scada-client" + "github.com/hashicorp/scada-client/scada" "github.com/mitchellh/cli" ) @@ -325,7 +326,7 @@ // Do an immediate check within the next 30 seconds go func() { - time.Sleep(randomStagger(30 * time.Second)) + time.Sleep(lib.RandomStagger(30 * time.Second)) c.checkpointResults(checkpoint.Check(updateParams)) }() } @@ -339,7 +340,12 @@ return } if results.Outdated { - c.Ui.Error(fmt.Sprintf("Newer Nomad version available: %s", results.CurrentVersion)) + versionStr := c.Version + if c.VersionPrerelease != "" { + versionStr += fmt.Sprintf("-%s", c.VersionPrerelease) + } + + c.Ui.Error(fmt.Sprintf("Newer Nomad version available: %s (currently running: %s)", results.CurrentVersion, versionStr)) } for _, alert := range results.Alerts { switch alert.Level { @@ -608,7 +614,26 @@ // Create the new provider and listener c.Ui.Output("Connecting to Atlas: " + config.Atlas.Infrastructure) - provider, list, err := NewProvider(config, c.logOutput) + + scadaConfig := &scada.Config{ + Service: "nomad", + Version: fmt.Sprintf("%s%s", config.Version, config.VersionPrerelease), + ResourceType: "nomad-cluster", + Meta: map[string]string{ + "auto-join": strconv.FormatBool(config.Atlas.Join), + "region": config.Region, + "datacenter": config.Datacenter, + "client": strconv.FormatBool(config.Client != nil && config.Client.Enabled), + "server": strconv.FormatBool(config.Server != nil && config.Server.Enabled), + }, + Atlas: scada.AtlasConfig{ + Endpoint: config.Atlas.Endpoint, + Infrastructure: config.Atlas.Infrastructure, + Token: config.Atlas.Token, + }, + } + + provider, list, err := scada.NewHTTPProvider(scadaConfig, c.logOutput) if err != nil { return err } diff -Nru nomad-0.3.2+dfsg/command/agent/config.go nomad-0.4.0+dfsg/command/agent/config.go --- nomad-0.3.2+dfsg/command/agent/config.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/config.go 2016-06-28 21:26:34.000000000 +0000 @@ -14,6 +14,7 @@ client "github.com/hashicorp/nomad/client/config" "github.com/hashicorp/nomad/nomad" + "github.com/hashicorp/nomad/nomad/structs/config" ) // Config is the configuration for the Nomad agent. @@ -82,6 +83,11 @@ // AtlasConfig is used to configure Atlas Atlas *AtlasConfig `mapstructure:"atlas"` + // Consul contains the configuration for the Consul Agent and + // parameters necessary to register services, their checks, and + // discover the current Nomad servers. + Consul *config.ConsulConfig `mapstructure:"consul"` + // NomadConfig is used to override the default config. // This is largly used for testing purposes. NomadConfig *nomad.Config `mapstructure:"-" json:"-"` @@ -179,7 +185,7 @@ Enabled bool `mapstructure:"enabled"` // BootstrapExpect tries to automatically bootstrap the Consul cluster, - // by witholding peers until enough servers join. + // by withholding peers until enough servers join. BootstrapExpect int `mapstructure:"bootstrap_expect"` // DataDir is the directory to store our state in @@ -234,9 +240,11 @@ // Telemetry is the telemetry configuration for the server type Telemetry struct { - StatsiteAddr string `mapstructure:"statsite_address"` - StatsdAddr string `mapstructure:"statsd_address"` - DisableHostname bool `mapstructure:"disable_hostname"` + StatsiteAddr string `mapstructure:"statsite_address"` + StatsdAddr string `mapstructure:"statsd_address"` + DisableHostname bool `mapstructure:"disable_hostname"` + CollectionInterval string `mapstructure:"collection_interval"` + collectionInterval time.Duration `mapstructure:"-"` } // Ports is used to encapsulate the various ports we bind to for network @@ -341,6 +349,7 @@ conf.DevMode = true conf.EnableDebug = true conf.DisableAnonymousSignature = true + conf.Consul.AutoAdvertise = true if runtime.GOOS == "darwin" { conf.Client.NetworkInterface = "lo0" } else if runtime.GOOS == "linux" { @@ -368,6 +377,7 @@ Addresses: &Addresses{}, AdvertiseAddrs: &AdvertiseAddrs{}, Atlas: &AtlasConfig{}, + Consul: config.DefaultConsulConfig(), Client: &ClientConfig{ Enabled: false, NetworkSpeed: 100, @@ -384,6 +394,10 @@ RetryMaxAttempts: 0, }, SyslogFacility: "LOCAL0", + Telemetry: &Telemetry{ + CollectionInterval: "1s", + collectionInterval: 1 * time.Second, + }, } } @@ -512,9 +526,25 @@ result.Atlas = result.Atlas.Merge(b.Atlas) } + // Apply the Consul Configuration + if result.Consul == nil && b.Consul != nil { + consulConfig := *b.Consul + result.Consul = &consulConfig + } else if b.Consul != nil { + result.Consul = result.Consul.Merge(b.Consul) + } + // Merge config files lists result.Files = append(result.Files, b.Files...) + // Add the http API response header map values + if result.HTTPAPIResponseHeaders == nil { + result.HTTPAPIResponseHeaders = make(map[string]string) + } + for k, v := range b.HTTPAPIResponseHeaders { + result.HTTPAPIResponseHeaders[k] = v + } + return &result } @@ -640,6 +670,12 @@ if b.DisableHostname { result.DisableHostname = true } + if b.CollectionInterval != "" { + result.CollectionInterval = b.CollectionInterval + } + if b.collectionInterval != 0 { + result.collectionInterval = b.collectionInterval + } return &result } diff -Nru nomad-0.3.2+dfsg/command/agent/config_parse.go nomad-0.4.0+dfsg/command/agent/config_parse.go --- nomad-0.3.2+dfsg/command/agent/config_parse.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/config_parse.go 2016-06-28 21:26:34.000000000 +0000 @@ -6,10 +6,12 @@ "io" "os" "path/filepath" + "time" "github.com/hashicorp/go-multierror" "github.com/hashicorp/hcl" "github.com/hashicorp/hcl/hcl/ast" + "github.com/hashicorp/nomad/nomad/structs/config" "github.com/mitchellh/mapstructure" ) @@ -90,6 +92,7 @@ "disable_update_check", "disable_anonymous_signature", "atlas", + "consul", "http_api_response_headers", } if err := checkHCLKeys(list, valid); err != nil { @@ -109,6 +112,7 @@ delete(m, "server") delete(m, "telemetry") delete(m, "atlas") + delete(m, "consul") delete(m, "http_api_response_headers") // Decode the rest @@ -165,6 +169,13 @@ } } + // Parse the consul config + if o := list.Filter("consul"); len(o.Items) > 0 { + if err := parseConsulConfig(&result.Consul, o); err != nil { + return multierror.Prefix(err, "consul ->") + } + } + // Parse out http_api_response_headers fields. These are in HCL as a list so // we need to iterate over them and merge them. if headersO := list.Filter("http_api_response_headers"); len(headersO.Items) > 0 { @@ -310,6 +321,7 @@ "client_max_port", "client_min_port", "reserved", + "stats", } if err := checkHCLKeys(listVal, valid); err != nil { return err @@ -323,6 +335,7 @@ delete(m, "options") delete(m, "meta") delete(m, "reserved") + delete(m, "stats") var config ClientConfig if err := mapstructure.WeakDecode(m, &config); err != nil { @@ -479,6 +492,7 @@ "statsite_address", "statsd_address", "disable_hostname", + "collection_interval", } if err := checkHCLKeys(listVal, valid); err != nil { return err @@ -493,6 +507,13 @@ if err := mapstructure.WeakDecode(m, &telemetry); err != nil { return err } + if telemetry.CollectionInterval != "" { + if dur, err := time.ParseDuration(telemetry.CollectionInterval); err != nil { + return fmt.Errorf("error parsing value of %q: %v", "collection_interval", err) + } else { + telemetry.collectionInterval = dur + } + } *result = &telemetry return nil } @@ -530,6 +551,59 @@ return nil } +func parseConsulConfig(result **config.ConsulConfig, list *ast.ObjectList) error { + list = list.Elem() + if len(list.Items) > 1 { + return fmt.Errorf("only one 'consul' block allowed") + } + + // Get our Consul object + listVal := list.Items[0].Val + + // Check for invalid keys + valid := []string{ + "address", + "auth", + "auto_advertise", + "ca_file", + "cert_file", + "client_auto_join", + "client_service_name", + "key_file", + "server_auto_join", + "server_service_name", + "ssl", + "timeout", + "token", + "verify_ssl", + } + + if err := checkHCLKeys(listVal, valid); err != nil { + return err + } + + var m map[string]interface{} + if err := hcl.DecodeObject(&m, listVal); err != nil { + return err + } + + consulConfig := config.DefaultConsulConfig() + dec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{ + DecodeHook: mapstructure.StringToTimeDurationHookFunc(), + WeaklyTypedInput: true, + Result: &consulConfig, + }) + if err != nil { + return err + } + if err := dec.Decode(m); err != nil { + return err + } + + *result = consulConfig + return nil +} + func checkHCLKeys(node ast.Node, valid []string) error { var list *ast.ObjectList switch n := node.(type) { diff -Nru nomad-0.3.2+dfsg/command/agent/config_parse_test.go nomad-0.4.0+dfsg/command/agent/config_parse_test.go --- nomad-0.3.2+dfsg/command/agent/config_parse_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/config_parse_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,6 +4,9 @@ "path/filepath" "reflect" "testing" + "time" + + "github.com/hashicorp/nomad/nomad/structs/config" ) func TestConfig_Parse(t *testing.T) { @@ -80,9 +83,11 @@ RetryMaxAttempts: 3, }, Telemetry: &Telemetry{ - StatsiteAddr: "127.0.0.1:1234", - StatsdAddr: "127.0.0.1:2345", - DisableHostname: true, + StatsiteAddr: "127.0.0.1:1234", + StatsdAddr: "127.0.0.1:2345", + DisableHostname: true, + CollectionInterval: "3s", + collectionInterval: 3 * time.Second, }, LeaveOnInt: true, LeaveOnTerm: true, @@ -96,6 +101,21 @@ Join: true, Endpoint: "127.0.0.1:1234", }, + Consul: &config.ConsulConfig{ + ServerServiceName: "nomad", + ClientServiceName: "nomad-client", + Addr: "127.0.0.1:9500", + Token: "token1", + Auth: "username:pass", + EnableSSL: true, + VerifySSL: false, + CAFile: "/path/to/ca/file", + CertFile: "/path/to/cert/file", + KeyFile: "/path/to/key/file", + ServerAutoJoin: false, + ClientAutoJoin: false, + AutoAdvertise: false, + }, HTTPAPIResponseHeaders: map[string]string{ "Access-Control-Allow-Origin": "*", }, diff -Nru nomad-0.3.2+dfsg/command/agent/config-test-fixtures/basic.hcl nomad-0.4.0+dfsg/command/agent/config-test-fixtures/basic.hcl --- nomad-0.3.2+dfsg/command/agent/config-test-fixtures/basic.hcl 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/config-test-fixtures/basic.hcl 2016-06-28 21:26:34.000000000 +0000 @@ -45,6 +45,10 @@ client_min_port = 1000 client_max_port = 2000 max_kill_timeout = "10s" + stats { + data_points = 35 + collection_interval = "5s" + } } server { enabled = true @@ -65,6 +69,7 @@ statsite_address = "127.0.0.1:1234" statsd_address = "127.0.0.1:2345" disable_hostname = true + collection_interval = "3s" } leave_on_interrupt = true leave_on_terminate = true @@ -81,3 +86,18 @@ http_api_response_headers { Access-Control-Allow-Origin = "*" } +consul { + server_service_name = "nomad" + client_service_name = "nomad-client" + address = "127.0.0.1:9500" + token = "token1" + auth = "username:pass" + ssl = true + verify_ssl = false + ca_file = "/path/to/ca/file" + cert_file = "/path/to/cert/file" + key_file = "/path/to/key/file" + server_auto_join = false + client_auto_join = false + auto_advertise = false +} diff -Nru nomad-0.3.2+dfsg/command/agent/config_test.go nomad-0.4.0+dfsg/command/agent/config_test.go --- nomad-0.3.2+dfsg/command/agent/config_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/config_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -80,6 +80,9 @@ Join: false, Endpoint: "foo", }, + HTTPAPIResponseHeaders: map[string]string{ + "Access-Control-Allow-Origin": "*", + }, } c2 := &Config{ @@ -162,6 +165,10 @@ Join: true, Endpoint: "bar", }, + HTTPAPIResponseHeaders: map[string]string{ + "Access-Control-Allow-Origin": "*", + "Access-Control-Allow-Methods": "GET, POST, OPTIONS", + }, } result := c1.Merge(c2) diff -Nru nomad-0.3.2+dfsg/command/agent/consul/check.go nomad-0.4.0+dfsg/command/agent/consul/check.go --- nomad-0.3.2+dfsg/command/agent/consul/check.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/consul/check.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,84 @@ +package consul + +import ( + "log" + "sync" + "time" + + "github.com/hashicorp/consul/lib" + cstructs "github.com/hashicorp/nomad/client/driver/structs" +) + +// CheckRunner runs a given check in a specific interval and update a +// corresponding Consul TTL check +type CheckRunner struct { + check Check + runCheck func(Check) + logger *log.Logger + stop bool + stopCh chan struct{} + stopLock sync.Mutex + + started bool + startedLock sync.Mutex +} + +// NewCheckRunner configures and returns a CheckRunner +func NewCheckRunner(check Check, runCheck func(Check), logger *log.Logger) *CheckRunner { + cr := CheckRunner{ + check: check, + runCheck: runCheck, + logger: logger, + stopCh: make(chan struct{}), + } + return &cr +} + +// Start is used to start the check. The check runs until stop is called +func (r *CheckRunner) Start() { + r.startedLock.Lock() + defer r.startedLock.Unlock() + if r.started { + return + } + r.stopLock.Lock() + defer r.stopLock.Unlock() + go r.run() + r.started = true +} + +// Stop is used to stop the check. +func (r *CheckRunner) Stop() { + r.stopLock.Lock() + defer r.stopLock.Unlock() + if !r.stop { + r.stop = true + close(r.stopCh) + } +} + +// run is invoked by a goroutine to run until Stop() is called +func (r *CheckRunner) run() { + // Get the randomized initial pause time + initialPauseTime := lib.RandomStagger(r.check.Interval()) + r.logger.Printf("[DEBUG] agent: pausing %v before first invocation of %s", initialPauseTime, r.check.ID()) + next := time.NewTimer(initialPauseTime) + for { + select { + case <-next.C: + r.runCheck(r.check) + next.Reset(r.check.Interval()) + case <-r.stopCh: + next.Stop() + return + } + } +} + +// Check is an interface which check providers can implement for Nomad to run +type Check interface { + Run() *cstructs.CheckResult + ID() string + Interval() time.Duration + Timeout() time.Duration +} diff -Nru nomad-0.3.2+dfsg/command/agent/consul/syncer.go nomad-0.4.0+dfsg/command/agent/consul/syncer.go --- nomad-0.3.2+dfsg/command/agent/consul/syncer.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/consul/syncer.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,972 @@ +// Package consul is used by Nomad to register all services both static services +// and dynamic via allocations. +// +// Consul Service IDs have the following format: ${nomadServicePrefix}-${groupName}-${serviceKey} +// groupName takes on one of the following values: +// - server +// - client +// - executor-${alloc-id}-${task-name} +// +// serviceKey should be generated by service registrators. +// If the serviceKey is being generated by the executor for a Nomad Task.Services +// the following helper should be used: +// NOTE: Executor should interpolate the service prior to calling +// func GenerateTaskServiceKey(service *structs.Service) string +// +// The Nomad Client reaps services registered from dead allocations that were +// not properly cleaned up by the executor (this is not the expected case). +// +// TODO fix this comment +// The Consul ServiceIDs generated by the executor will contain the allocation +// ID. Thus the client can generate the list of Consul ServiceIDs to keep by +// calling the following method on all running allocations the client is aware +// of: +// func GenerateExecutorServiceKeyPrefixFromAlloc(allocID string) string +package consul + +import ( + "fmt" + "log" + "net/url" + "strings" + "sync" + "time" + + consul "github.com/hashicorp/consul/api" + "github.com/hashicorp/consul/lib" + "github.com/hashicorp/go-multierror" + + "github.com/hashicorp/nomad/nomad/structs" + "github.com/hashicorp/nomad/nomad/structs/config" + "github.com/hashicorp/nomad/nomad/types" +) + +const ( + // initialSyncBuffer is the max time an initial sync will sleep + // before syncing. + initialSyncBuffer = 30 * time.Second + + // initialSyncDelay is the delay before an initial sync. + initialSyncDelay = 5 * time.Second + + // nomadServicePrefix is the first prefix that scopes all Nomad registered + // services + nomadServicePrefix = "_nomad" + + // The periodic time interval for syncing services and checks with Consul + syncInterval = 5 * time.Second + + // syncJitter provides a little variance in the frequency at which + // Syncer polls Consul. + syncJitter = 8 + + // ttlCheckBuffer is the time interval that Nomad can take to report Consul + // the check result + ttlCheckBuffer = 31 * time.Second + + // DefaultQueryWaitDuration is the max duration the Consul Agent will + // spend waiting for a response from a Consul Query. + DefaultQueryWaitDuration = 2 * time.Second + + // ServiceTagHTTP is the tag assigned to HTTP services + ServiceTagHTTP = "http" + + // ServiceTagRPC is the tag assigned to RPC services + ServiceTagRPC = "rpc" + + // ServiceTagSerf is the tag assigned to Serf services + ServiceTagSerf = "serf" +) + +// consulServiceID and consulCheckID are the IDs registered with Consul +type consulServiceID string +type consulCheckID string + +// ServiceKey is the generated service key that is used to build the Consul +// ServiceID +type ServiceKey string + +// ServiceDomain is the domain of services registered by Nomad +type ServiceDomain string + +const ( + ClientDomain ServiceDomain = "client" + ServerDomain ServiceDomain = "server" +) + +// NewExecutorDomain returns a domain specific to the alloc ID and task +func NewExecutorDomain(allocID, task string) ServiceDomain { + return ServiceDomain(fmt.Sprintf("executor-%s-%s", allocID, task)) +} + +// Syncer allows syncing of services and checks with Consul +type Syncer struct { + client *consul.Client + consulAvailable bool + + // servicesGroups and checkGroups are named groups of services and checks + // respectively that will be flattened and reconciled with Consul when + // SyncServices() is called. The key to the servicesGroups map is unique + // per handler and is used to allow the Agent's services to be maintained + // independently of the Client or Server's services. + servicesGroups map[ServiceDomain]map[ServiceKey]*consul.AgentServiceRegistration + checkGroups map[ServiceDomain]map[ServiceKey][]*consul.AgentCheckRegistration + groupsLock sync.RWMutex + + // The "Consul Registry" is a collection of Consul Services and + // Checks all guarded by the registryLock. + registryLock sync.RWMutex + + // trackedChecks and trackedServices are registered with consul + trackedChecks map[consulCheckID]*consul.AgentCheckRegistration + trackedServices map[consulServiceID]*consul.AgentServiceRegistration + + // checkRunners are delegated Consul checks being ran by the Syncer + checkRunners map[consulCheckID]*CheckRunner + + addrFinder func(portLabel string) (string, int) + createDelegatedCheck func(*structs.ServiceCheck, string) (Check, error) + delegateChecks map[string]struct{} // delegateChecks are the checks that the Nomad client runs and reports to Consul + // End registryLock guarded attributes. + + logger *log.Logger + + shutdownCh chan struct{} + shutdown bool + shutdownLock sync.Mutex + + // notifyShutdownCh is used to notify a Syncer it needs to shutdown. + // This can happen because there was an explicit call to the Syncer's + // Shutdown() method, or because the calling task signaled the + // program is going to exit by closing its shutdownCh. + notifyShutdownCh chan struct{} + + // periodicCallbacks is walked sequentially when the timer in Run + // fires. + periodicCallbacks map[string]types.PeriodicCallback + notifySyncCh chan struct{} + periodicLock sync.RWMutex +} + +// NewSyncer returns a new consul.Syncer +func NewSyncer(consulConfig *config.ConsulConfig, shutdownCh chan struct{}, logger *log.Logger) (*Syncer, error) { + var consulClientConfig *consul.Config + var err error + consulClientConfig, err = consulConfig.ApiConfig() + if err != nil { + return nil, err + } + + var consulClient *consul.Client + if consulClient, err = consul.NewClient(consulClientConfig); err != nil { + return nil, err + } + consulSyncer := Syncer{ + client: consulClient, + logger: logger, + consulAvailable: true, + shutdownCh: shutdownCh, + servicesGroups: make(map[ServiceDomain]map[ServiceKey]*consul.AgentServiceRegistration), + checkGroups: make(map[ServiceDomain]map[ServiceKey][]*consul.AgentCheckRegistration), + trackedServices: make(map[consulServiceID]*consul.AgentServiceRegistration), + trackedChecks: make(map[consulCheckID]*consul.AgentCheckRegistration), + checkRunners: make(map[consulCheckID]*CheckRunner), + periodicCallbacks: make(map[string]types.PeriodicCallback), + } + + return &consulSyncer, nil +} + +// SetDelegatedChecks sets the checks that nomad is going to run and report the +// result back to consul +func (c *Syncer) SetDelegatedChecks(delegateChecks map[string]struct{}, createDelegatedCheckFn func(*structs.ServiceCheck, string) (Check, error)) *Syncer { + c.delegateChecks = delegateChecks + c.createDelegatedCheck = createDelegatedCheckFn + return c +} + +// SetAddrFinder sets a function to find the host and port for a Service given its port label +func (c *Syncer) SetAddrFinder(addrFinder func(string) (string, int)) *Syncer { + c.addrFinder = addrFinder + return c +} + +// GenerateServiceKey should be called to generate a serviceKey based on the +// Service. +func GenerateServiceKey(service *structs.Service) ServiceKey { + var key string + numTags := len(service.Tags) + switch numTags { + case 0: + key = fmt.Sprintf("%s", service.Name) + default: + tags := strings.Join(service.Tags, "-") + key = fmt.Sprintf("%s-%s", service.Name, tags) + } + return ServiceKey(key) +} + +// SetServices stores the map of Nomad Services to the provided service +// domain name. +func (c *Syncer) SetServices(domain ServiceDomain, services map[ServiceKey]*structs.Service) error { + var mErr multierror.Error + numServ := len(services) + registeredServices := make(map[ServiceKey]*consul.AgentServiceRegistration, numServ) + registeredChecks := make(map[ServiceKey][]*consul.AgentCheckRegistration, numServ) + for serviceKey, service := range services { + serviceReg, err := c.createService(service, domain, serviceKey) + if err != nil { + mErr.Errors = append(mErr.Errors, err) + continue + } + registeredServices[serviceKey] = serviceReg + + // Register the check(s) for this service + for _, chk := range service.Checks { + // Create a Consul check registration + chkReg, err := c.createCheckReg(chk, serviceReg) + if err != nil { + mErr.Errors = append(mErr.Errors, err) + continue + } + + // creating a nomad check if we have to handle this particular check type + c.registryLock.RLock() + if _, ok := c.delegateChecks[chk.Type]; ok { + _, ok := c.checkRunners[consulCheckID(chkReg.ID)] + c.registryLock.RUnlock() + if ok { + continue + } + + nc, err := c.createDelegatedCheck(chk, chkReg.ID) + if err != nil { + mErr.Errors = append(mErr.Errors, err) + continue + } + + cr := NewCheckRunner(nc, c.runCheck, c.logger) + c.registryLock.Lock() + // TODO type the CheckRunner + c.checkRunners[consulCheckID(nc.ID())] = cr + c.registryLock.Unlock() + } else { + c.registryLock.RUnlock() + } + + registeredChecks[serviceKey] = append(registeredChecks[serviceKey], chkReg) + } + } + + if len(mErr.Errors) > 0 { + return mErr.ErrorOrNil() + } + + c.groupsLock.Lock() + for serviceKey, service := range registeredServices { + serviceKeys, ok := c.servicesGroups[domain] + if !ok { + serviceKeys = make(map[ServiceKey]*consul.AgentServiceRegistration, len(registeredServices)) + c.servicesGroups[domain] = serviceKeys + } + serviceKeys[serviceKey] = service + } + for serviceKey, checks := range registeredChecks { + serviceKeys, ok := c.checkGroups[domain] + if !ok { + serviceKeys = make(map[ServiceKey][]*consul.AgentCheckRegistration, len(registeredChecks)) + c.checkGroups[domain] = serviceKeys + } + serviceKeys[serviceKey] = checks + } + c.groupsLock.Unlock() + + // Sync immediately + c.SyncNow() + + return nil +} + +// SyncNow expires the current timer forcing the list of periodic callbacks +// to be synced immediately. +func (c *Syncer) SyncNow() { + select { + case c.notifySyncCh <- struct{}{}: + default: + } +} + +// flattenedServices returns a flattened list of services that are registered +// locally +func (c *Syncer) flattenedServices() []*consul.AgentServiceRegistration { + const initialNumServices = 8 + services := make([]*consul.AgentServiceRegistration, 0, initialNumServices) + c.groupsLock.RLock() + defer c.groupsLock.RUnlock() + for _, servicesGroup := range c.servicesGroups { + for _, service := range servicesGroup { + services = append(services, service) + } + } + return services +} + +// flattenedChecks returns a flattened list of checks that are registered +// locally +func (c *Syncer) flattenedChecks() []*consul.AgentCheckRegistration { + const initialNumChecks = 8 + checks := make([]*consul.AgentCheckRegistration, 0, initialNumChecks) + c.groupsLock.RLock() + for _, checkGroup := range c.checkGroups { + for _, check := range checkGroup { + checks = append(checks, check...) + } + } + c.groupsLock.RUnlock() + return checks +} + +func (c *Syncer) signalShutdown() { + select { + case c.notifyShutdownCh <- struct{}{}: + default: + } +} + +// Shutdown de-registers the services and checks and shuts down periodic syncing +func (c *Syncer) Shutdown() error { + var mErr multierror.Error + + c.shutdownLock.Lock() + if !c.shutdown { + c.shutdown = true + } + c.shutdownLock.Unlock() + + c.signalShutdown() + + // Stop all the checks that nomad is running + c.registryLock.RLock() + defer c.registryLock.RUnlock() + for _, cr := range c.checkRunners { + cr.Stop() + } + + // De-register all the services from Consul + for serviceID := range c.trackedServices { + convertedID := string(serviceID) + if err := c.client.Agent().ServiceDeregister(convertedID); err != nil { + c.logger.Printf("[WARN] consul.syncer: failed to deregister service ID %+q: %v", convertedID, err) + mErr.Errors = append(mErr.Errors, err) + } + } + return mErr.ErrorOrNil() +} + +// queryChecks queries the Consul Agent for a list of Consul checks that +// have been registered with this Consul Syncer. +func (c *Syncer) queryChecks() (map[consulCheckID]*consul.AgentCheck, error) { + checks, err := c.client.Agent().Checks() + if err != nil { + return nil, err + } + return c.filterConsulChecks(checks), nil +} + +// queryAgentServices queries the Consul Agent for a list of Consul services that +// have been registered with this Consul Syncer. +func (c *Syncer) queryAgentServices() (map[consulServiceID]*consul.AgentService, error) { + services, err := c.client.Agent().Services() + if err != nil { + return nil, err + } + return c.filterConsulServices(services), nil +} + +// syncChecks synchronizes this Syncer's Consul Checks with the Consul Agent. +func (c *Syncer) syncChecks() error { + var mErr multierror.Error + consulChecks, err := c.queryChecks() + if err != nil { + return err + } + + // Synchronize checks with Consul + missingChecks, _, changedChecks, staleChecks := c.calcChecksDiff(consulChecks) + for _, check := range missingChecks { + if err := c.registerCheck(check); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + c.registryLock.Lock() + c.trackedChecks[consulCheckID(check.ID)] = check + c.registryLock.Unlock() + } + for _, check := range changedChecks { + // NOTE(sean@): Do we need to deregister the check before + // re-registering it? Not deregistering to avoid missing the + // TTL but doesn't correct reconcile any possible drift with + // the check. + // + // if err := c.deregisterCheck(check.ID); err != nil { + // mErr.Errors = append(mErr.Errors, err) + // } + if err := c.registerCheck(check); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + } + for _, check := range staleChecks { + if err := c.deregisterCheck(consulCheckID(check.ID)); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + c.registryLock.Lock() + delete(c.trackedChecks, consulCheckID(check.ID)) + c.registryLock.Unlock() + } + return mErr.ErrorOrNil() +} + +// compareConsulCheck takes a consul.AgentCheckRegistration instance and +// compares it with a consul.AgentCheck. Returns true if they are equal +// according to consul.AgentCheck, otherwise false. +func compareConsulCheck(localCheck *consul.AgentCheckRegistration, consulCheck *consul.AgentCheck) bool { + if consulCheck.CheckID != localCheck.ID || + consulCheck.Name != localCheck.Name || + consulCheck.Notes != localCheck.Notes || + consulCheck.ServiceID != localCheck.ServiceID { + return false + } + return true +} + +// calcChecksDiff takes the argument (consulChecks) and calculates the delta +// between the consul.Syncer's list of known checks (c.trackedChecks). Three +// arrays are returned: +// +// 1) a slice of checks that exist only locally in the Syncer and are missing +// from the Consul Agent (consulChecks) and therefore need to be registered. +// +// 2) a slice of checks that exist in both the local consul.Syncer's +// tracked list and Consul Agent (consulChecks). +// +// 3) a slice of checks that exist in both the local consul.Syncer's +// tracked list and Consul Agent (consulServices) but have diverged state. +// +// 4) a slice of checks that exist only in the Consul Agent (consulChecks) +// and should be removed because the Consul Agent has drifted from the +// Syncer. +func (c *Syncer) calcChecksDiff(consulChecks map[consulCheckID]*consul.AgentCheck) ( + missingChecks []*consul.AgentCheckRegistration, + equalChecks []*consul.AgentCheckRegistration, + changedChecks []*consul.AgentCheckRegistration, + staleChecks []*consul.AgentCheckRegistration) { + + type mergedCheck struct { + check *consul.AgentCheckRegistration + // 'l' == Nomad local only + // 'e' == equal + // 'c' == changed + // 'a' == Consul agent only + state byte + } + var ( + localChecksCount = 0 + equalChecksCount = 0 + changedChecksCount = 0 + agentChecks = 0 + ) + c.registryLock.RLock() + localChecks := make(map[string]*mergedCheck, len(c.trackedChecks)+len(consulChecks)) + for _, localCheck := range c.flattenedChecks() { + localChecksCount++ + localChecks[localCheck.ID] = &mergedCheck{localCheck, 'l'} + } + c.registryLock.RUnlock() + for _, consulCheck := range consulChecks { + if localCheck, found := localChecks[consulCheck.CheckID]; found { + localChecksCount-- + if compareConsulCheck(localCheck.check, consulCheck) { + equalChecksCount++ + localChecks[consulCheck.CheckID].state = 'e' + } else { + changedChecksCount++ + localChecks[consulCheck.CheckID].state = 'c' + } + } else { + agentChecks++ + agentCheckReg := &consul.AgentCheckRegistration{ + ID: consulCheck.CheckID, + Name: consulCheck.Name, + Notes: consulCheck.Notes, + ServiceID: consulCheck.ServiceID, + } + localChecks[consulCheck.CheckID] = &mergedCheck{agentCheckReg, 'a'} + } + } + + missingChecks = make([]*consul.AgentCheckRegistration, 0, localChecksCount) + equalChecks = make([]*consul.AgentCheckRegistration, 0, equalChecksCount) + changedChecks = make([]*consul.AgentCheckRegistration, 0, changedChecksCount) + staleChecks = make([]*consul.AgentCheckRegistration, 0, agentChecks) + for _, check := range localChecks { + switch check.state { + case 'l': + missingChecks = append(missingChecks, check.check) + case 'e': + equalChecks = append(equalChecks, check.check) + case 'c': + changedChecks = append(changedChecks, check.check) + case 'a': + staleChecks = append(staleChecks, check.check) + } + } + + return missingChecks, equalChecks, changedChecks, staleChecks +} + +// compareConsulService takes a consul.AgentServiceRegistration instance and +// compares it with a consul.AgentService. Returns true if they are equal +// according to consul.AgentService, otherwise false. +func compareConsulService(localService *consul.AgentServiceRegistration, consulService *consul.AgentService) bool { + if consulService.ID != localService.ID || + consulService.Service != localService.Name || + consulService.Port != localService.Port || + consulService.Address != localService.Address || + consulService.EnableTagOverride != localService.EnableTagOverride { + return false + } + + serviceTags := make(map[string]byte, len(localService.Tags)) + for _, tag := range localService.Tags { + serviceTags[tag] = 'l' + } + for _, tag := range consulService.Tags { + if _, found := serviceTags[tag]; !found { + return false + } + serviceTags[tag] = 'b' + } + for _, state := range serviceTags { + if state == 'l' { + return false + } + } + + return true +} + +// calcServicesDiff takes the argument (consulServices) and calculates the +// delta between the consul.Syncer's list of known services +// (c.trackedServices). Four arrays are returned: +// +// 1) a slice of services that exist only locally in the Syncer and are +// missing from the Consul Agent (consulServices) and therefore need to be +// registered. +// +// 2) a slice of services that exist in both the local consul.Syncer's +// tracked list and Consul Agent (consulServices) *AND* are identical. +// +// 3) a slice of services that exist in both the local consul.Syncer's +// tracked list and Consul Agent (consulServices) but have diverged state. +// +// 4) a slice of services that exist only in the Consul Agent +// (consulServices) and should be removed because the Consul Agent has +// drifted from the Syncer. +func (c *Syncer) calcServicesDiff(consulServices map[consulServiceID]*consul.AgentService) (missingServices []*consul.AgentServiceRegistration, equalServices []*consul.AgentServiceRegistration, changedServices []*consul.AgentServiceRegistration, staleServices []*consul.AgentServiceRegistration) { + type mergedService struct { + service *consul.AgentServiceRegistration + // 'l' == Nomad local only + // 'e' == equal + // 'c' == changed + // 'a' == Consul agent only + state byte + } + var ( + localServicesCount = 0 + equalServicesCount = 0 + changedServicesCount = 0 + agentServices = 0 + ) + c.registryLock.RLock() + localServices := make(map[string]*mergedService, len(c.trackedServices)+len(consulServices)) + c.registryLock.RUnlock() + for _, localService := range c.flattenedServices() { + localServicesCount++ + localServices[localService.ID] = &mergedService{localService, 'l'} + } + for _, consulService := range consulServices { + if localService, found := localServices[consulService.ID]; found { + localServicesCount-- + if compareConsulService(localService.service, consulService) { + equalServicesCount++ + localServices[consulService.ID].state = 'e' + } else { + changedServicesCount++ + localServices[consulService.ID].state = 'c' + } + } else { + agentServices++ + agentServiceReg := &consul.AgentServiceRegistration{ + ID: consulService.ID, + Name: consulService.Service, + Tags: consulService.Tags, + Port: consulService.Port, + Address: consulService.Address, + } + localServices[consulService.ID] = &mergedService{agentServiceReg, 'a'} + } + } + + missingServices = make([]*consul.AgentServiceRegistration, 0, localServicesCount) + equalServices = make([]*consul.AgentServiceRegistration, 0, equalServicesCount) + changedServices = make([]*consul.AgentServiceRegistration, 0, changedServicesCount) + staleServices = make([]*consul.AgentServiceRegistration, 0, agentServices) + for _, service := range localServices { + switch service.state { + case 'l': + missingServices = append(missingServices, service.service) + case 'e': + equalServices = append(equalServices, service.service) + case 'c': + changedServices = append(changedServices, service.service) + case 'a': + staleServices = append(staleServices, service.service) + } + } + + return missingServices, equalServices, changedServices, staleServices +} + +// syncServices synchronizes this Syncer's Consul Services with the Consul +// Agent. +func (c *Syncer) syncServices() error { + consulServices, err := c.queryAgentServices() + if err != nil { + return err + } + + // Synchronize services with Consul + var mErr multierror.Error + missingServices, _, changedServices, removedServices := c.calcServicesDiff(consulServices) + for _, service := range missingServices { + if err := c.client.Agent().ServiceRegister(service); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + c.registryLock.Lock() + c.trackedServices[consulServiceID(service.ID)] = service + c.registryLock.Unlock() + } + for _, service := range changedServices { + // Re-register the local service + if err := c.client.Agent().ServiceRegister(service); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + } + for _, service := range removedServices { + if err := c.deregisterService(service.ID); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + c.registryLock.Lock() + delete(c.trackedServices, consulServiceID(service.ID)) + c.registryLock.Unlock() + } + return mErr.ErrorOrNil() +} + +// registerCheck registers a check definition with Consul +func (c *Syncer) registerCheck(chkReg *consul.AgentCheckRegistration) error { + c.registryLock.RLock() + if cr, ok := c.checkRunners[consulCheckID(chkReg.ID)]; ok { + cr.Start() + } + c.registryLock.RUnlock() + return c.client.Agent().CheckRegister(chkReg) +} + +// createCheckReg creates a Check that can be registered with Nomad. It also +// creates a Nomad check for the check types that it can handle. +func (c *Syncer) createCheckReg(check *structs.ServiceCheck, service *consul.AgentServiceRegistration) (*consul.AgentCheckRegistration, error) { + chkReg := consul.AgentCheckRegistration{ + ID: check.Hash(service.ID), + Name: check.Name, + ServiceID: service.ID, + } + chkReg.Timeout = check.Timeout.String() + chkReg.Interval = check.Interval.String() + switch check.Type { + case structs.ServiceCheckHTTP: + if check.Protocol == "" { + check.Protocol = "http" + } + url := url.URL{ + Scheme: check.Protocol, + Host: fmt.Sprintf("%s:%d", service.Address, service.Port), + Path: check.Path, + } + chkReg.HTTP = url.String() + case structs.ServiceCheckTCP: + chkReg.TCP = fmt.Sprintf("%s:%d", service.Address, service.Port) + case structs.ServiceCheckScript: + chkReg.TTL = (check.Interval + ttlCheckBuffer).String() + default: + return nil, fmt.Errorf("check type %+q not valid", check.Type) + } + return &chkReg, nil +} + +// generateConsulServiceID takes the domain and service key and returns a Consul +// ServiceID +func generateConsulServiceID(domain ServiceDomain, key ServiceKey) consulServiceID { + return consulServiceID(fmt.Sprintf("%s-%s-%s", nomadServicePrefix, domain, key)) +} + +// createService creates a Consul AgentService from a Nomad ConsulService. +func (c *Syncer) createService(service *structs.Service, domain ServiceDomain, key ServiceKey) (*consul.AgentServiceRegistration, error) { + c.registryLock.RLock() + defer c.registryLock.RUnlock() + + srv := consul.AgentServiceRegistration{ + ID: string(generateConsulServiceID(domain, key)), + Name: service.Name, + Tags: service.Tags, + } + host, port := c.addrFinder(service.PortLabel) + if host != "" { + srv.Address = host + } + + if port != 0 { + srv.Port = port + } + + return &srv, nil +} + +// deregisterService de-registers a service with the given ID from consul +func (c *Syncer) deregisterService(serviceID string) error { + return c.client.Agent().ServiceDeregister(serviceID) +} + +// deregisterCheck de-registers a check from Consul +func (c *Syncer) deregisterCheck(id consulCheckID) error { + c.registryLock.Lock() + defer c.registryLock.Unlock() + + // Deleting from Consul Agent + if err := c.client.Agent().CheckDeregister(string(id)); err != nil { + // CheckDeregister() will be reattempted again in a future + // sync. + return err + } + + // Remove the check from the local registry + if cr, ok := c.checkRunners[id]; ok { + cr.Stop() + delete(c.checkRunners, id) + } + + return nil +} + +// Run triggers periodic syncing of services and checks with Consul. This is +// a long lived go-routine which is stopped during shutdown. +func (c *Syncer) Run() { + sync := time.NewTimer(0) + for { + select { + case <-sync.C: + d := syncInterval - lib.RandomStagger(syncInterval/syncJitter) + sync.Reset(d) + + if err := c.SyncServices(); err != nil { + if c.consulAvailable { + c.logger.Printf("[DEBUG] consul.syncer: error in syncing: %v", err) + } + c.consulAvailable = false + } else { + if !c.consulAvailable { + c.logger.Printf("[DEBUG] consul.syncer: syncs succesful") + } + c.consulAvailable = true + } + case <-c.notifySyncCh: + sync.Reset(syncInterval) + case <-c.shutdownCh: + c.Shutdown() + case <-c.notifyShutdownCh: + sync.Stop() + c.logger.Printf("[INFO] consul.syncer: shutting down syncer ") + return + } + } +} + +// RunHandlers executes each handler (randomly) +func (c *Syncer) RunHandlers() error { + c.periodicLock.RLock() + handlers := make(map[string]types.PeriodicCallback, len(c.periodicCallbacks)) + for name, fn := range c.periodicCallbacks { + handlers[name] = fn + } + c.periodicLock.RUnlock() + + var mErr multierror.Error + for _, fn := range handlers { + if err := fn(); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + } + return mErr.ErrorOrNil() +} + +// SyncServices sync the services with the Consul Agent +func (c *Syncer) SyncServices() error { + if err := c.RunHandlers(); err != nil { + return err + } + if err := c.syncServices(); err != nil { + return err + } + if err := c.syncChecks(); err != nil { + return err + } + + return nil +} + +// filterConsulServices prunes out all the service who were not registered with +// the syncer +func (c *Syncer) filterConsulServices(consulServices map[string]*consul.AgentService) map[consulServiceID]*consul.AgentService { + localServices := make(map[consulServiceID]*consul.AgentService, len(consulServices)) + c.registryLock.RLock() + defer c.registryLock.RUnlock() + for serviceID, service := range consulServices { + for domain := range c.servicesGroups { + if strings.HasPrefix(service.ID, fmt.Sprintf("%s-%s", nomadServicePrefix, domain)) { + localServices[consulServiceID(serviceID)] = service + break + } + } + } + return localServices +} + +// filterConsulChecks prunes out all the consul checks which do not have +// services with Syncer's idPrefix. +func (c *Syncer) filterConsulChecks(consulChecks map[string]*consul.AgentCheck) map[consulCheckID]*consul.AgentCheck { + localChecks := make(map[consulCheckID]*consul.AgentCheck, len(consulChecks)) + c.registryLock.RLock() + defer c.registryLock.RUnlock() + for checkID, check := range consulChecks { + for domain := range c.checkGroups { + if strings.HasPrefix(check.ServiceID, fmt.Sprintf("%s-%s", nomadServicePrefix, domain)) { + localChecks[consulCheckID(checkID)] = check + break + } + } + } + return localChecks +} + +// consulPresent indicates whether the Consul Agent is responding +func (c *Syncer) consulPresent() bool { + _, err := c.client.Agent().Self() + return err == nil +} + +// runCheck runs a check and updates the corresponding ttl check in consul +func (c *Syncer) runCheck(check Check) { + res := check.Run() + if res.Duration >= check.Timeout() { + c.logger.Printf("[DEBUG] consul.syncer: check took time: %v, timeout: %v", res.Duration, check.Timeout()) + } + state := consul.HealthCritical + output := res.Output + switch res.ExitCode { + case 0: + state = consul.HealthPassing + case 1: + state = consul.HealthWarning + default: + state = consul.HealthCritical + } + if res.Err != nil { + state = consul.HealthCritical + output = res.Err.Error() + } + if err := c.client.Agent().UpdateTTL(check.ID(), output, state); err != nil { + if c.consulAvailable { + c.logger.Printf("[DEBUG] consul.syncer: check %+q failed, disabling Consul checks until until next successful sync: %v", check.ID(), err) + c.consulAvailable = false + } else { + c.consulAvailable = true + } + } +} + +// ReapUnmatched prunes all services that do not exist in the passed domains +func (c *Syncer) ReapUnmatched(domains []ServiceDomain) error { + servicesInConsul, err := c.ConsulClient().Agent().Services() + if err != nil { + return err + } + + var mErr multierror.Error + for serviceID := range servicesInConsul { + // Skip any service that was not registered by Nomad + if !strings.HasPrefix(serviceID, nomadServicePrefix) { + continue + } + + // Filter services that do not exist in the desired domains + match := false + for _, domain := range domains { + // Include the hyphen so it is explicit to that domain otherwise it + // maybe a subset match + desired := fmt.Sprintf("%s-%s-", nomadServicePrefix, domain) + if strings.HasPrefix(serviceID, desired) { + match = true + break + } + } + + if !match { + if err := c.deregisterService(serviceID); err != nil { + mErr.Errors = append(mErr.Errors, err) + } + } + } + + return mErr.ErrorOrNil() +} + +// AddPeriodicHandler adds a uniquely named callback. Returns true if +// successful, false if a handler with the same name already exists. +func (c *Syncer) AddPeriodicHandler(name string, fn types.PeriodicCallback) bool { + c.periodicLock.Lock() + defer c.periodicLock.Unlock() + if _, found := c.periodicCallbacks[name]; found { + c.logger.Printf("[ERROR] consul.syncer: failed adding handler %+q", name) + return false + } + c.periodicCallbacks[name] = fn + return true +} + +// NumHandlers returns the number of callbacks registered with the syncer +func (c *Syncer) NumHandlers() int { + c.periodicLock.RLock() + defer c.periodicLock.RUnlock() + return len(c.periodicCallbacks) +} + +// RemovePeriodicHandler removes a handler with a given name. +func (c *Syncer) RemovePeriodicHandler(name string) { + c.periodicLock.Lock() + defer c.periodicLock.Unlock() + delete(c.periodicCallbacks, name) +} + +// ConsulClient returns the Consul client used by the Syncer. +func (c *Syncer) ConsulClient() *consul.Client { + return c.client +} diff -Nru nomad-0.3.2+dfsg/command/agent/consul/syncer_test.go nomad-0.4.0+dfsg/command/agent/consul/syncer_test.go --- nomad-0.3.2+dfsg/command/agent/consul/syncer_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/consul/syncer_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,186 @@ +package consul + +import ( + "fmt" + "log" + "os" + "testing" + "time" + + "github.com/hashicorp/go-multierror" + "github.com/hashicorp/nomad/nomad/structs" + "github.com/hashicorp/nomad/nomad/structs/config" +) + +const ( + allocID = "12" + serviceRegPrefix = "test" + serviceGroupName = "executor" +) + +var ( + logger = log.New(os.Stdout, "", log.LstdFlags) + check1 = structs.ServiceCheck{ + Name: "check-foo-1", + Type: structs.ServiceCheckTCP, + Interval: 30 * time.Second, + Timeout: 5 * time.Second, + } + service1 = structs.Service{ + Name: "foo-1", + Tags: []string{"tag1", "tag2"}, + PortLabel: "port1", + Checks: []*structs.ServiceCheck{ + &check1, + }, + } + + service2 = structs.Service{ + Name: "foo-2", + Tags: []string{"tag1", "tag2"}, + PortLabel: "port2", + } +) + +func TestConsulServiceRegisterServices(t *testing.T) { + t.Skip() + + shutdownCh := make(chan struct{}) + cs, err := NewSyncer(config.DefaultConsulConfig(), shutdownCh, logger) + if err != nil { + t.Fatalf("Err: %v", err) + } + // Skipping the test if consul isn't present + if !cs.consulPresent() { + return + } + task := mockTask() + //cs.SetServiceRegPrefix(serviceRegPrefix) + cs.SetAddrFinder(task.FindHostAndPortFor) + if err := cs.SyncServices(); err != nil { + t.Fatalf("err: %v", err) + } + defer cs.Shutdown() + + // service1 := &structs.Service{Name: task.Name} + // service2 := &structs.Service{Name: task.Name} + //services := []*structs.Service{service1, service2} + //service1.ServiceID = fmt.Sprintf("%s-%s:%s/%s", cs.GenerateServiceID(serviceGroupName, service1), task.Name, allocID) + //service2.ServiceID = fmt.Sprintf("%s-%s:%s/%s", cs.GenerateServiceID(serviceGroupName, service2), task.Name, allocID) + + //cs.SetServices(serviceGroupName, services) + // if err := servicesPresent(t, services, cs); err != nil { + // t.Fatalf("err : %v", err) + // } + // FIXME(sean@) + // if err := checksPresent(t, []string{check1.Hash(service1ID)}, cs); err != nil { + // t.Fatalf("err : %v", err) + // } +} + +func TestConsulServiceUpdateService(t *testing.T) { + t.Skip() + + shutdownCh := make(chan struct{}) + cs, err := NewSyncer(config.DefaultConsulConfig(), shutdownCh, logger) + if err != nil { + t.Fatalf("Err: %v", err) + } + // Skipping the test if consul isn't present + if !cs.consulPresent() { + return + } + + task := mockTask() + //cs.SetServiceRegPrefix(serviceRegPrefix) + cs.SetAddrFinder(task.FindHostAndPortFor) + if err := cs.SyncServices(); err != nil { + t.Fatalf("err: %v", err) + } + defer cs.Shutdown() + + //Update Service defn 1 + newTags := []string{"tag3"} + task.Services[0].Tags = newTags + if err := cs.SyncServices(); err != nil { + t.Fatalf("err: %v", err) + } + // Make sure all the services and checks are still present + // service1 := &structs.Service{Name: task.Name} + // service2 := &structs.Service{Name: task.Name} + //services := []*structs.Service{service1, service2} + //service1.ServiceID = fmt.Sprintf("%s-%s:%s/%s", cs.GenerateServiceID(serviceGroupName, service1), task.Name, allocID) + //service2.ServiceID = fmt.Sprintf("%s-%s:%s/%s", cs.GenerateServiceID(serviceGroupName, service2), task.Name, allocID) + // if err := servicesPresent(t, services, cs); err != nil { + // t.Fatalf("err : %v", err) + // } + // FIXME(sean@) + // if err := checksPresent(t, []string{check1.Hash(service1ID)}, cs); err != nil { + // t.Fatalf("err : %v", err) + // } + + // check if service defn 1 has been updated + // consulServices, err := cs.client.Agent().Services() + // if err != nil { + // t.Fatalf("errL: %v", err) + // } + // srv, _ := consulServices[service1.ServiceID] + // if !reflect.DeepEqual(srv.Tags, newTags) { + // t.Fatalf("expected tags: %v, actual: %v", newTags, srv.Tags) + // } +} + +// func servicesPresent(t *testing.T, configuredServices []*structs.Service, syncer *Syncer) error { +// var mErr multierror.Error +// // services, err := syncer.client.Agent().Services() +// // if err != nil { +// // t.Fatalf("err: %v", err) +// // } + +// // for _, configuredService := range configuredServices { +// // if _, ok := services[configuredService.ServiceID]; !ok { +// // mErr.Errors = append(mErr.Errors, fmt.Errorf("service ID %q not synced", configuredService.ServiceID)) +// // } +// // } +// return mErr.ErrorOrNil() +// } + +func checksPresent(t *testing.T, checkIDs []string, syncer *Syncer) error { + var mErr multierror.Error + checks, err := syncer.client.Agent().Checks() + if err != nil { + t.Fatalf("err: %v", err) + } + + for _, checkID := range checkIDs { + if _, ok := checks[checkID]; !ok { + mErr.Errors = append(mErr.Errors, fmt.Errorf("check ID %q not synced", checkID)) + } + } + return mErr.ErrorOrNil() +} + +func mockTask() *structs.Task { + task := structs.Task{ + Name: "foo", + Services: []*structs.Service{&service1, &service2}, + Resources: &structs.Resources{ + Networks: []*structs.NetworkResource{ + &structs.NetworkResource{ + IP: "10.10.11.5", + DynamicPorts: []structs.Port{ + structs.Port{ + Label: "port1", + Value: 20002, + }, + structs.Port{ + Label: "port2", + Value: 20003, + }, + }, + }, + }, + }, + } + return &task +} diff -Nru nomad-0.3.2+dfsg/command/agent/fs_endpoint.go nomad-0.4.0+dfsg/command/agent/fs_endpoint.go --- nomad-0.3.2+dfsg/command/agent/fs_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/fs_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -123,6 +123,9 @@ } r, err := fs.ReadAt(path, int64(0), fileInfo.Size) + if err != nil { + return nil, err + } io.Copy(resp, r) return nil, nil } diff -Nru nomad-0.3.2+dfsg/command/agent/http.go nomad-0.4.0+dfsg/command/agent/http.go --- nomad-0.3.2+dfsg/command/agent/http.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/http.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,6 +1,7 @@ package agent import ( + "bytes" "encoding/json" "fmt" "io" @@ -11,7 +12,9 @@ "strconv" "time" + "github.com/NYTimes/gziphandler" "github.com/hashicorp/nomad/nomad/structs" + "github.com/ugorji/go/codec" ) const ( @@ -25,6 +28,13 @@ scadaHTTPAddr = "SCADA" ) +var ( + // jsonHandle and jsonHandlePretty are the codec handles to JSON encode + // structs. The pretty handle will add indents for easier human consumption. + jsonHandle = &codec.JsonHandle{} + jsonHandlePretty = &codec.JsonHandle{Indent: 4} +) + // HTTPServer is used to wrap an Agent and expose it over an HTTP interface type HTTPServer struct { agent *Agent @@ -56,7 +66,7 @@ srv.registerHandlers(config.EnableDebug) // Start the server - go http.Serve(ln, mux) + go http.Serve(ln, gziphandler.GzipHandler(mux)) return srv, nil } @@ -77,7 +87,7 @@ srv.registerHandlers(false) // Never allow debug for SCADA // Start the server - go http.Serve(list, mux) + go http.Serve(list, gziphandler.GzipHandler(mux)) return srv } @@ -104,6 +114,8 @@ s.mux.HandleFunc("/v1/evaluation/", s.wrap(s.EvalSpecificRequest)) s.mux.HandleFunc("/v1/client/fs/", s.wrap(s.FsRequest)) + s.mux.HandleFunc("/v1/client/stats", s.wrap(s.ClientStatsRequest)) + s.mux.HandleFunc("/v1/client/allocation/", s.wrap(s.ClientAllocRequest)) s.mux.HandleFunc("/v1/agent/self", s.wrap(s.AgentSelfRequest)) s.mux.HandleFunc("/v1/agent/join", s.wrap(s.AgentJoinRequest)) @@ -175,23 +187,30 @@ } prettyPrint := false - if _, ok := req.URL.Query()["pretty"]; ok { - prettyPrint = true + if v, ok := req.URL.Query()["pretty"]; ok { + if len(v) > 0 && (len(v[0]) == 0 || v[0] != "0") { + prettyPrint = true + } } // Write out the JSON object if obj != nil { - var buf []byte + var buf bytes.Buffer if prettyPrint { - buf, err = json.MarshalIndent(obj, "", " ") + enc := codec.NewEncoder(&buf, jsonHandlePretty) + err = enc.Encode(obj) + if err == nil { + buf.Write([]byte("\n")) + } } else { - buf, err = json.Marshal(obj) + enc := codec.NewEncoder(&buf, jsonHandle) + err = enc.Encode(obj) } if err != nil { goto HAS_ERR } resp.Header().Set("Content-Type", "application/json") - resp.Write(buf) + resp.Write(buf.Bytes()) } } return f diff -Nru nomad-0.3.2+dfsg/command/agent/http_test.go nomad-0.4.0+dfsg/command/agent/http_test.go --- nomad-0.3.2+dfsg/command/agent/http_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/http_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -13,12 +13,13 @@ "testing" "time" + "github.com/hashicorp/nomad/nomad/mock" "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/nomad/testutil" ) type TestServer struct { - T *testing.T + T testing.TB Dir string Agent *Agent Server *HTTPServer @@ -30,9 +31,25 @@ os.RemoveAll(s.Dir) } -func makeHTTPServer(t *testing.T, cb func(c *Config)) *TestServer { +// makeHTTPServerNoLogs returns a test server with full logging. +func makeHTTPServer(t testing.TB, cb func(c *Config)) *TestServer { + return makeHTTPServerWithWriter(t, nil, cb) +} + +// makeHTTPServerNoLogs returns a test server which only prints agent logs and +// no http server logs +func makeHTTPServerNoLogs(t testing.TB, cb func(c *Config)) *TestServer { + return makeHTTPServerWithWriter(t, ioutil.Discard, cb) +} + +// makeHTTPServerWithWriter returns a test server whose logs will be written to +// the passed writer. If the writer is nil, the logs are written to stderr. +func makeHTTPServerWithWriter(t testing.TB, w io.Writer, cb func(c *Config)) *TestServer { dir, agent := makeAgent(t, cb) - srv, err := NewHTTPServer(agent, agent.config, agent.logOutput) + if w == nil { + w = agent.logOutput + } + srv, err := NewHTTPServer(agent, agent.config, w) if err != nil { t.Fatalf("err: %v", err) } @@ -45,6 +62,37 @@ return s } +func BenchmarkHTTPRequests(b *testing.B) { + s := makeHTTPServerNoLogs(b, func(c *Config) { + c.Client.Enabled = false + }) + defer s.Cleanup() + + job := mock.Job() + var allocs []*structs.Allocation + count := 1000 + for i := 0; i < count; i++ { + alloc := mock.Alloc() + alloc.Job = job + alloc.JobID = job.ID + alloc.Name = fmt.Sprintf("my-job.web[%d]", i) + allocs = append(allocs, alloc) + } + + handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { + return allocs[:count], nil + } + b.ResetTimer() + + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + resp := httptest.NewRecorder() + req, _ := http.NewRequest("GET", "/v1/kv/key", nil) + s.Server.wrap(handler)(resp, req) + } + }) +} + func TestSetIndex(t *testing.T) { resp := httptest.NewRecorder() setIndex(resp, 1000) @@ -145,14 +193,18 @@ } func TestPrettyPrint(t *testing.T) { - testPrettyPrint("pretty=1", t) + testPrettyPrint("pretty=1", true, t) +} + +func TestPrettyPrintOff(t *testing.T) { + testPrettyPrint("pretty=0", false, t) } func TestPrettyPrintBare(t *testing.T) { - testPrettyPrint("pretty", t) + testPrettyPrint("pretty", true, t) } -func testPrettyPrint(pretty string, t *testing.T) { +func testPrettyPrint(pretty string, prettyFmt bool, t *testing.T) { s := makeHTTPServer(t, nil) defer s.Cleanup() @@ -167,14 +219,20 @@ req, _ := http.NewRequest("GET", urlStr, nil) s.Server.wrap(handler)(resp, req) - expected, _ := json.MarshalIndent(r, "", " ") + var expected []byte + if prettyFmt { + expected, _ = json.MarshalIndent(r, "", " ") + expected = append(expected, "\n"...) + } else { + expected, _ = json.Marshal(r) + } actual, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatalf("err: %s", err) } if !bytes.Equal(expected, actual) { - t.Fatalf("bad: %q", string(actual)) + t.Fatalf("bad:\nexpected:\t%q\nactual:\t\t%q", string(expected), string(actual)) } } diff -Nru nomad-0.3.2+dfsg/command/agent/job_endpoint.go nomad-0.4.0+dfsg/command/agent/job_endpoint.go --- nomad-0.3.2+dfsg/command/agent/job_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/job_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -51,6 +51,9 @@ case strings.HasSuffix(path, "/periodic/force"): jobName := strings.TrimSuffix(path, "/periodic/force") return s.periodicForceRequest(resp, req, jobName) + case strings.HasSuffix(path, "/plan"): + jobName := strings.TrimSuffix(path, "/plan") + return s.jobPlan(resp, req, jobName) default: return s.jobCRUD(resp, req, path) } @@ -71,6 +74,32 @@ return nil, err } setIndex(resp, out.Index) + return out, nil +} + +func (s *HTTPServer) jobPlan(resp http.ResponseWriter, req *http.Request, + jobName string) (interface{}, error) { + if req.Method != "PUT" && req.Method != "POST" { + return nil, CodedError(405, ErrInvalidMethod) + } + + var args structs.JobPlanRequest + if err := decodeBody(req, &args); err != nil { + return nil, CodedError(400, err.Error()) + } + if args.Job == nil { + return nil, CodedError(400, "Job must be specified") + } + if jobName != "" && args.Job.ID != jobName { + return nil, CodedError(400, "Job ID does not match") + } + s.parseRegion(req, &args.Region) + + var out structs.JobPlanResponse + if err := s.agent.RPC("Job.Plan", &args, &out); err != nil { + return nil, err + } + setIndex(resp, out.Index) return out, nil } diff -Nru nomad-0.3.2+dfsg/command/agent/job_endpoint_test.go nomad-0.4.0+dfsg/command/agent/job_endpoint_test.go --- nomad-0.3.2+dfsg/command/agent/job_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/job_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -483,3 +483,39 @@ } }) } + +func TestHTTP_JobPlan(t *testing.T) { + httpTest(t, nil, func(s *TestServer) { + // Create the job + job := mock.Job() + args := structs.JobPlanRequest{ + Job: job, + Diff: true, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + buf := encodeReq(args) + + // Make the HTTP request + req, err := http.NewRequest("PUT", "/v1/job/"+job.ID+"/plan", buf) + if err != nil { + t.Fatalf("err: %v", err) + } + respW := httptest.NewRecorder() + + // Make the request + obj, err := s.Server.JobSpecificRequest(respW, req) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Check the response + plan := obj.(structs.JobPlanResponse) + if plan.Annotations == nil { + t.Fatalf("bad: %v", plan) + } + + if plan.Diff == nil { + t.Fatalf("bad: %v", plan) + } + }) +} diff -Nru nomad-0.3.2+dfsg/command/agent/scada.go nomad-0.4.0+dfsg/command/agent/scada.go --- nomad-0.3.2+dfsg/command/agent/scada.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/scada.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,195 +0,0 @@ -package agent - -import ( - "crypto/tls" - "errors" - "fmt" - "io" - "net" - "os" - "strconv" - "sync" - "time" - - "github.com/hashicorp/scada-client" -) - -const ( - // providerService is the service name we use - providerService = "nomad" - - // resourceType is the type of resource we represent - // when connecting to SCADA - resourceType = "nomad-cluster" -) - -// ProviderService returns the service information for the provider -func ProviderService(c *Config) *client.ProviderService { - return &client.ProviderService{ - Service: providerService, - ServiceVersion: fmt.Sprintf("%s%s", c.Version, c.VersionPrerelease), - Capabilities: map[string]int{ - "http": 1, - }, - Meta: map[string]string{ - "auto-join": strconv.FormatBool(c.Atlas.Join), - "region": c.Region, - "datacenter": c.Datacenter, - "client": strconv.FormatBool(c.Client != nil && c.Client.Enabled), - "server": strconv.FormatBool(c.Server != nil && c.Server.Enabled), - }, - ResourceType: resourceType, - } -} - -// ProviderConfig returns the configuration for the SCADA provider -func ProviderConfig(c *Config) *client.ProviderConfig { - return &client.ProviderConfig{ - Service: ProviderService(c), - Handlers: map[string]client.CapabilityProvider{ - "http": nil, - }, - Endpoint: c.Atlas.Endpoint, - ResourceGroup: c.Atlas.Infrastructure, - Token: c.Atlas.Token, - } -} - -// NewProvider creates a new SCADA provider using the -// given configuration. Requests for the HTTP capability -// are passed off to the listener that is returned. -func NewProvider(c *Config, logOutput io.Writer) (*client.Provider, net.Listener, error) { - // Get the configuration of the provider - config := ProviderConfig(c) - config.LogOutput = logOutput - - // SCADA_INSECURE env variable is used for testing to disable - // TLS certificate verification. - if os.Getenv("SCADA_INSECURE") != "" { - config.TLSConfig = &tls.Config{ - InsecureSkipVerify: true, - } - } - - // Create an HTTP listener and handler - list := newScadaListener(c.Atlas.Infrastructure) - config.Handlers["http"] = func(capability string, meta map[string]string, - conn io.ReadWriteCloser) error { - return list.PushRWC(conn) - } - - // Create the provider - provider, err := client.NewProvider(config) - if err != nil { - list.Close() - return nil, nil, err - } - return provider, list, nil -} - -// scadaListener is used to return a net.Listener for -// incoming SCADA connections -type scadaListener struct { - addr *scadaAddr - pending chan net.Conn - - closed bool - closedCh chan struct{} - l sync.Mutex -} - -// newScadaListener returns a new listener -func newScadaListener(infra string) *scadaListener { - l := &scadaListener{ - addr: &scadaAddr{infra}, - pending: make(chan net.Conn), - closedCh: make(chan struct{}), - } - return l -} - -// PushRWC is used to push a io.ReadWriteCloser as a net.Conn -func (s *scadaListener) PushRWC(conn io.ReadWriteCloser) error { - // Check if this already implements net.Conn - if nc, ok := conn.(net.Conn); ok { - return s.Push(nc) - } - - // Wrap to implement the interface - wrapped := &scadaRWC{conn, s.addr} - return s.Push(wrapped) -} - -// Push is used to add a connection to the queu -func (s *scadaListener) Push(conn net.Conn) error { - select { - case s.pending <- conn: - return nil - case <-time.After(time.Second): - return fmt.Errorf("accept timed out") - case <-s.closedCh: - return fmt.Errorf("scada listener closed") - } -} - -func (s *scadaListener) Accept() (net.Conn, error) { - select { - case conn := <-s.pending: - return conn, nil - case <-s.closedCh: - return nil, fmt.Errorf("scada listener closed") - } -} - -func (s *scadaListener) Close() error { - s.l.Lock() - defer s.l.Unlock() - if s.closed { - return nil - } - s.closed = true - close(s.closedCh) - return nil -} - -func (s *scadaListener) Addr() net.Addr { - return s.addr -} - -// scadaAddr is used to return a net.Addr for SCADA -type scadaAddr struct { - infra string -} - -func (s *scadaAddr) Network() string { - return "SCADA" -} - -func (s *scadaAddr) String() string { - return fmt.Sprintf("SCADA::Atlas::%s", s.infra) -} - -type scadaRWC struct { - io.ReadWriteCloser - addr *scadaAddr -} - -func (s *scadaRWC) LocalAddr() net.Addr { - return s.addr -} - -func (s *scadaRWC) RemoteAddr() net.Addr { - return s.addr -} - -func (s *scadaRWC) SetDeadline(t time.Time) error { - return errors.New("SCADA.Conn does not support deadlines") -} - -func (s *scadaRWC) SetReadDeadline(t time.Time) error { - return errors.New("SCADA.Conn does not support deadlines") -} - -func (s *scadaRWC) SetWriteDeadline(t time.Time) error { - return errors.New("SCADA.Conn does not support deadlines") -} diff -Nru nomad-0.3.2+dfsg/command/agent/scada_test.go nomad-0.4.0+dfsg/command/agent/scada_test.go --- nomad-0.3.2+dfsg/command/agent/scada_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/scada_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,112 +0,0 @@ -package agent - -import ( - "net" - "reflect" - "testing" - - "github.com/hashicorp/scada-client" -) - -func TestProviderService(t *testing.T) { - conf := DefaultConfig() - conf.Version = "0.5.0" - conf.VersionPrerelease = "rc1" - conf.Atlas = &AtlasConfig{} - conf.Atlas.Join = true - conf.Server.Enabled = true - ps := ProviderService(conf) - - expect := &client.ProviderService{ - Service: "nomad", - ServiceVersion: "0.5.0rc1", - Capabilities: map[string]int{ - "http": 1, - }, - Meta: map[string]string{ - "auto-join": "true", - "region": "global", - "datacenter": "dc1", - "client": "false", - "server": "true", - }, - ResourceType: "nomad-cluster", - } - - if !reflect.DeepEqual(ps, expect) { - t.Fatalf("bad: %v", ps) - } -} - -func TestProviderConfig(t *testing.T) { - conf := DefaultConfig() - conf.Version = "0.5.0" - conf.VersionPrerelease = "rc1" - conf.Atlas = &AtlasConfig{} - conf.Atlas.Join = true - conf.Atlas.Infrastructure = "armon/test" - conf.Atlas.Token = "foobarbaz" - conf.Atlas.Endpoint = "foo.bar:1111" - conf.Server.Enabled = true - pc := ProviderConfig(conf) - - expect := &client.ProviderConfig{ - Service: &client.ProviderService{ - Service: "nomad", - ServiceVersion: "0.5.0rc1", - Capabilities: map[string]int{ - "http": 1, - }, - Meta: map[string]string{ - "auto-join": "true", - "region": "global", - "datacenter": "dc1", - "client": "false", - "server": "true", - }, - ResourceType: "nomad-cluster", - }, - Handlers: map[string]client.CapabilityProvider{ - "http": nil, - }, - Endpoint: "foo.bar:1111", - ResourceGroup: "armon/test", - Token: "foobarbaz", - } - - if !reflect.DeepEqual(pc, expect) { - t.Fatalf("bad: %v", pc) - } -} - -func TestSCADAListener(t *testing.T) { - list := newScadaListener("armon/test") - defer list.Close() - - var raw interface{} = list - _, ok := raw.(net.Listener) - if !ok { - t.Fatalf("bad") - } - - a, b := net.Pipe() - defer a.Close() - defer b.Close() - - go list.Push(a) - out, err := list.Accept() - if err != nil { - t.Fatalf("err: %v", err) - } - if out != a { - t.Fatalf("bad") - } -} - -func TestSCADAAddr(t *testing.T) { - var addr interface{} = &scadaAddr{"armon/test"} - _, ok := addr.(net.Addr) - if !ok { - t.Fatalf("bad") - } -} diff -Nru nomad-0.3.2+dfsg/command/agent/stats_endpoint.go nomad-0.4.0+dfsg/command/agent/stats_endpoint.go --- nomad-0.3.2+dfsg/command/agent/stats_endpoint.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/stats_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,12 @@ +package agent + +import "net/http" + +func (s *HTTPServer) ClientStatsRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) { + if s.agent.client == nil { + return nil, clientNotRunning + } + + clientStats := s.agent.client.StatsReporter() + return clientStats.LatestHostStats(), nil +} diff -Nru nomad-0.3.2+dfsg/command/agent/stats_endpoint_test.go nomad-0.4.0+dfsg/command/agent/stats_endpoint_test.go --- nomad-0.3.2+dfsg/command/agent/stats_endpoint_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/stats_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,22 @@ +package agent + +import ( + "net/http" + "net/http/httptest" + "testing" +) + +func TestClientStatsRequest(t *testing.T) { + httpTest(t, nil, func(s *TestServer) { + req, err := http.NewRequest("GET", "/v1/client/stats/?since=foo", nil) + if err != nil { + t.Fatalf("err: %v", err) + } + + respW := httptest.NewRecorder() + _, err = s.Server.ClientStatsRequest(respW, req) + if err != nil { + t.Fatalf("unexpected err: %v", err) + } + }) +} diff -Nru nomad-0.3.2+dfsg/command/agent/util.go nomad-0.4.0+dfsg/command/agent/util.go --- nomad-0.3.2+dfsg/command/agent/util.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/util.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,16 +2,9 @@ import ( "fmt" - "math/rand" "net" - "time" ) -// Returns a random stagger interval between 0 and the duration -func randomStagger(intv time.Duration) time.Duration { - return time.Duration(uint64(rand.Int63()) % uint64(intv)) -} - // IpOfDevice returns a routable ip addr of a device func ipOfDevice(name string) (net.IP, error) { intf, err := net.InterfaceByName(name) diff -Nru nomad-0.3.2+dfsg/command/agent/util_test.go nomad-0.4.0+dfsg/command/agent/util_test.go --- nomad-0.3.2+dfsg/command/agent/util_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/agent/util_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,16 +0,0 @@ -package agent - -import ( - "testing" - "time" -) - -func TestRandomStagger(t *testing.T) { - intv := time.Minute - for i := 0; i < 10; i++ { - stagger := randomStagger(intv) - if stagger < 0 || stagger >= intv { - t.Fatalf("Bad: %v", stagger) - } - } -} diff -Nru nomad-0.3.2+dfsg/command/alloc_status.go nomad-0.4.0+dfsg/command/alloc_status.go --- nomad-0.3.2+dfsg/command/alloc_status.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/alloc_status.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,16 +2,22 @@ import ( "fmt" + "math" "sort" + "strconv" "strings" "time" + "github.com/dustin/go-humanize" + "github.com/mitchellh/colorstring" + "github.com/hashicorp/nomad/api" "github.com/hashicorp/nomad/client" ) type AllocStatusCommand struct { Meta + color *colorstring.Colorize } func (c *AllocStatusCommand) Help() string { @@ -27,10 +33,14 @@ ` + generalOptionsUsage() + ` +Alloc Status Options: -short Display short output. Shows only the most recent task event. + -stats + Display detailed resource usage statistics + -verbose Show full information. ` @@ -43,12 +53,13 @@ } func (c *AllocStatusCommand) Run(args []string) int { - var short, verbose bool + var short, displayStats, verbose bool flags := c.Meta.FlagSet("alloc-status", FlagSetClient) flags.Usage = func() { c.Ui.Output(c.Help()) } flags.BoolVar(&short, "short", false, "") flags.BoolVar(&verbose, "verbose", false, "") + flags.BoolVar(&displayStats, "stats", false, "") if err := flags.Parse(args); err != nil { return 1 @@ -119,6 +130,14 @@ return 1 } + var statsErr error + var stats *api.AllocResourceUsage + stats, statsErr = client.Allocations().Stats(alloc, nil) + if statsErr != nil { + c.Ui.Output("") + c.Ui.Error(fmt.Sprintf("couldn't retrieve stats (HINT: ensure Client.Advertise.HTTP is set): %v", statsErr)) + } + // Format the allocation data basic := []string{ fmt.Sprintf("ID|%s", limit(alloc.ID, length)), @@ -139,26 +158,229 @@ } c.Ui.Output(formatKV(basic)) - if !short { - c.taskResources(alloc) - } - - // Print the state of each task. if short { c.shortTaskStatus(alloc) } else { - c.taskStatus(alloc) + c.outputTaskDetails(alloc, stats, displayStats) } // Format the detailed status - if verbose || alloc.DesiredStatus == "failed" { - c.Ui.Output("\n==> Status") - dumpAllocStatus(c.Ui, alloc, length) + if verbose { + c.Ui.Output(c.Colorize().Color("\n[bold]Placement Metrics[reset]")) + c.Ui.Output(formatAllocMetrics(alloc.Metrics, true, " ")) } return 0 } +// outputTaskDetails prints task details for each task in the allocation, +// optionally printing verbose statistics if displayStats is set +func (c *AllocStatusCommand) outputTaskDetails(alloc *api.Allocation, stats *api.AllocResourceUsage, displayStats bool) { + for task := range c.sortedTaskStateIterator(alloc.TaskStates) { + state := alloc.TaskStates[task] + c.Ui.Output(c.Colorize().Color(fmt.Sprintf("\n[bold]Task %q is %q[reset]", task, state.State))) + c.outputTaskResources(alloc, task, stats, displayStats) + c.Ui.Output("") + c.outputTaskStatus(state) + } +} + +// outputTaskStatus prints out a list of the most recent events for the given +// task state. +func (c *AllocStatusCommand) outputTaskStatus(state *api.TaskState) { + c.Ui.Output("Recent Events:") + events := make([]string, len(state.Events)+1) + events[0] = "Time|Type|Description" + + size := len(state.Events) + for i, event := range state.Events { + formatedTime := c.formatUnixNanoTime(event.Time) + + // Build up the description based on the event type. + var desc string + switch event.Type { + case api.TaskStarted: + desc = "Task started by client" + case api.TaskReceived: + desc = "Task received by client" + case api.TaskFailedValidation: + if event.ValidationError != "" { + desc = event.ValidationError + } else { + desc = "Validation of task failed" + } + case api.TaskDriverFailure: + if event.DriverError != "" { + desc = event.DriverError + } else { + desc = "Failed to start task" + } + case api.TaskDownloadingArtifacts: + desc = "Client is downloading artifacts" + case api.TaskArtifactDownloadFailed: + if event.DownloadError != "" { + desc = event.DownloadError + } else { + desc = "Failed to download artifacts" + } + case api.TaskKilled: + if event.KillError != "" { + desc = event.KillError + } else { + desc = "Task successfully killed" + } + case api.TaskTerminated: + var parts []string + parts = append(parts, fmt.Sprintf("Exit Code: %d", event.ExitCode)) + + if event.Signal != 0 { + parts = append(parts, fmt.Sprintf("Signal: %d", event.Signal)) + } + + if event.Message != "" { + parts = append(parts, fmt.Sprintf("Exit Message: %q", event.Message)) + } + desc = strings.Join(parts, ", ") + case api.TaskRestarting: + in := fmt.Sprintf("Task restarting in %v", time.Duration(event.StartDelay)) + if event.RestartReason != "" && event.RestartReason != client.ReasonWithinPolicy { + desc = fmt.Sprintf("%s - %s", event.RestartReason, in) + } else { + desc = in + } + case api.TaskNotRestarting: + if event.RestartReason != "" { + desc = event.RestartReason + } else { + desc = "Task exceeded restart policy" + } + } + + // Reverse order so we are sorted by time + events[size-i] = fmt.Sprintf("%s|%s|%s", formatedTime, event.Type, desc) + } + c.Ui.Output(formatList(events)) +} + +// outputTaskResources prints the task resources for the passed task and if +// displayStats is set, verbose resource usage statistics +func (c *AllocStatusCommand) outputTaskResources(alloc *api.Allocation, task string, stats *api.AllocResourceUsage, displayStats bool) { + resource, ok := alloc.TaskResources[task] + if !ok { + return + } + + c.Ui.Output("Task Resources") + var addr []string + for _, nw := range resource.Networks { + ports := append(nw.DynamicPorts, nw.ReservedPorts...) + for _, port := range ports { + addr = append(addr, fmt.Sprintf("%v: %v:%v\n", port.Label, nw.IP, port.Value)) + } + } + var resourcesOutput []string + resourcesOutput = append(resourcesOutput, "CPU|Memory|Disk|IOPS|Addresses") + firstAddr := "" + if len(addr) > 0 { + firstAddr = addr[0] + } + + // Display the rolled up stats. If possible prefer the live stastics + cpuUsage := strconv.Itoa(resource.CPU) + memUsage := humanize.IBytes(uint64(resource.MemoryMB * bytesPerMegabyte)) + if ru, ok := stats.Tasks[task]; ok && ru != nil && ru.ResourceUsage != nil { + if cs := ru.ResourceUsage.CpuStats; cs != nil { + cpuUsage = fmt.Sprintf("%v/%v", math.Floor(cs.TotalTicks), resource.CPU) + } + if ms := ru.ResourceUsage.MemoryStats; ms != nil { + memUsage = fmt.Sprintf("%v/%v", humanize.IBytes(ms.RSS), memUsage) + } + } + resourcesOutput = append(resourcesOutput, fmt.Sprintf("%v|%v|%v|%v|%v", + cpuUsage, + memUsage, + humanize.IBytes(uint64(resource.DiskMB*bytesPerMegabyte)), + resource.IOPS, + firstAddr)) + for i := 1; i < len(addr); i++ { + resourcesOutput = append(resourcesOutput, fmt.Sprintf("||||%v", addr[i])) + } + c.Ui.Output(formatListWithSpaces(resourcesOutput)) + + if ru, ok := stats.Tasks[task]; ok && ru != nil && displayStats && ru.ResourceUsage != nil { + c.Ui.Output("") + c.outputVerboseResourceUsage(task, ru.ResourceUsage) + } +} + +// outputVerboseResourceUsage outputs the verbose resource usage for the passed +// task +func (c *AllocStatusCommand) outputVerboseResourceUsage(task string, resourceUsage *api.ResourceUsage) { + memoryStats := resourceUsage.MemoryStats + cpuStats := resourceUsage.CpuStats + if memoryStats != nil && len(memoryStats.Measured) > 0 { + c.Ui.Output("Memory Stats") + + // Sort the measured stats + sort.Strings(memoryStats.Measured) + + var measuredStats []string + for _, measured := range memoryStats.Measured { + switch measured { + case "RSS": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.RSS)) + case "Cache": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.Cache)) + case "Swap": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.Swap)) + case "Max Usage": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.MaxUsage)) + case "Kernel Usage": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.KernelUsage)) + case "Kernel Max Usage": + measuredStats = append(measuredStats, humanize.IBytes(memoryStats.KernelMaxUsage)) + } + } + + out := make([]string, 2) + out[0] = strings.Join(memoryStats.Measured, "|") + out[1] = strings.Join(measuredStats, "|") + c.Ui.Output(formatList(out)) + c.Ui.Output("") + } + + if cpuStats != nil && len(cpuStats.Measured) > 0 { + c.Ui.Output("CPU Stats") + + // Sort the measured stats + sort.Strings(cpuStats.Measured) + + var measuredStats []string + for _, measured := range cpuStats.Measured { + switch measured { + case "Percent": + percent := strconv.FormatFloat(cpuStats.Percent, 'f', 2, 64) + measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent)) + case "Throttled Periods": + measuredStats = append(measuredStats, fmt.Sprintf("%v", cpuStats.ThrottledPeriods)) + case "Throttled Time": + measuredStats = append(measuredStats, fmt.Sprintf("%v", cpuStats.ThrottledTime)) + case "User Mode": + percent := strconv.FormatFloat(cpuStats.UserMode, 'f', 2, 64) + measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent)) + case "System Mode": + percent := strconv.FormatFloat(cpuStats.SystemMode, 'f', 2, 64) + measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent)) + } + } + + out := make([]string, 2) + out[0] = strings.Join(cpuStats.Measured, "|") + out[1] = strings.Join(measuredStats, "|") + c.Ui.Output(formatList(out)) + } +} + // shortTaskStatus prints out the current state of each task. func (c *AllocStatusCommand) shortTaskStatus(alloc *api.Allocation) { tasks := make([]string, 0, len(alloc.TaskStates)+1) @@ -179,96 +401,10 @@ task, lastState, lastEvent, lastTime)) } - c.Ui.Output("\n==> Tasks") + c.Ui.Output(c.Colorize().Color("\n[bold]Tasks[reset]")) c.Ui.Output(formatList(tasks)) } -// taskStatus prints out the most recent events for each task. -func (c *AllocStatusCommand) taskStatus(alloc *api.Allocation) { - for task := range c.sortedTaskStateIterator(alloc.TaskStates) { - state := alloc.TaskStates[task] - events := make([]string, len(state.Events)+1) - events[0] = "Time|Type|Description" - - size := len(state.Events) - for i, event := range state.Events { - formatedTime := c.formatUnixNanoTime(event.Time) - - // Build up the description based on the event type. - var desc string - switch event.Type { - case api.TaskStarted: - desc = "Task started by client" - case api.TaskReceived: - desc = "Task received by client" - case api.TaskFailedValidation: - if event.ValidationError != "" { - desc = event.ValidationError - } else { - desc = "Validation of task failed" - } - case api.TaskDriverFailure: - if event.DriverError != "" { - desc = event.DriverError - } else { - desc = "Failed to start task" - } - case api.TaskDownloadingArtifacts: - desc = "Client is downloading artifacts" - case api.TaskArtifactDownloadFailed: - if event.DownloadError != "" { - desc = event.DownloadError - } else { - desc = "Failed to download artifacts" - } - case api.TaskKilled: - if event.KillError != "" { - desc = event.KillError - } else { - desc = "Task successfully killed" - } - case api.TaskTerminated: - var parts []string - parts = append(parts, fmt.Sprintf("Exit Code: %d", event.ExitCode)) - - if event.Signal != 0 { - parts = append(parts, fmt.Sprintf("Signal: %d", event.Signal)) - } - - if event.Message != "" { - parts = append(parts, fmt.Sprintf("Exit Message: %q", event.Message)) - } - desc = strings.Join(parts, ", ") - case api.TaskRestarting: - in := fmt.Sprintf("Task restarting in %v", time.Duration(event.StartDelay)) - if event.RestartReason != "" && event.RestartReason != client.ReasonWithinPolicy { - desc = fmt.Sprintf("%s - %s", event.RestartReason, in) - } else { - desc = in - } - case api.TaskNotRestarting: - if event.RestartReason != "" { - desc = event.RestartReason - } else { - desc = "Task exceeded restart policy" - } - } - - // Reverse order so we are sorted by time - events[size-i] = fmt.Sprintf("%s|%s|%s", formatedTime, event.Type, desc) - } - - c.Ui.Output(fmt.Sprintf("\n==> Task %q is %q\nRecent Events:", task, state.State)) - c.Ui.Output(formatList(events)) - } -} - -// formatUnixNanoTime is a helper for formating time for output. -func (c *AllocStatusCommand) formatUnixNanoTime(nano int64) string { - t := time.Unix(0, nano) - return formatTime(t) -} - // sortedTaskStateIterator is a helper that takes the task state map and returns a // channel that returns the keys in a sorted order. func (c *AllocStatusCommand) sortedTaskStateIterator(m map[string]*api.TaskState) <-chan string { @@ -289,64 +425,8 @@ return output } -// allocResources prints out the allocation current resource usage -func (c *AllocStatusCommand) allocResources(alloc *api.Allocation) { - resources := make([]string, 2) - resources[0] = "CPU|Memory MB|Disk MB|IOPS" - resources[1] = fmt.Sprintf("%v|%v|%v|%v", - alloc.Resources.CPU, - alloc.Resources.MemoryMB, - alloc.Resources.DiskMB, - alloc.Resources.IOPS) - c.Ui.Output(formatList(resources)) -} - -// taskResources prints out the tasks current resource usage -func (c *AllocStatusCommand) taskResources(alloc *api.Allocation) { - if len(alloc.TaskResources) == 0 { - return - } - - // Sort the tasks. - tasks := make([]string, 0, len(alloc.TaskResources)) - for task := range alloc.TaskResources { - tasks = append(tasks, task) - } - sort.Strings(tasks) - - c.Ui.Output("\n==> Task Resources") - firstLine := true - for _, task := range tasks { - resource := alloc.TaskResources[task] - - header := fmt.Sprintf("\nTask: %q", task) - if firstLine { - header = fmt.Sprintf("Task: %q", task) - firstLine = false - } - c.Ui.Output(header) - var addr []string - for _, nw := range resource.Networks { - ports := append(nw.DynamicPorts, nw.ReservedPorts...) - for _, port := range ports { - addr = append(addr, fmt.Sprintf("%v: %v:%v\n", port.Label, nw.IP, port.Value)) - } - } - var resourcesOutput []string - resourcesOutput = append(resourcesOutput, "CPU|Memory MB|Disk MB|IOPS|Addresses") - firstAddr := "" - if len(addr) > 0 { - firstAddr = addr[0] - } - resourcesOutput = append(resourcesOutput, fmt.Sprintf("%v|%v|%v|%v|%v", - resource.CPU, - resource.MemoryMB, - resource.DiskMB, - resource.IOPS, - firstAddr)) - for i := 1; i < len(addr); i++ { - resourcesOutput = append(resourcesOutput, fmt.Sprintf("||||%v", addr[i])) - } - c.Ui.Output(formatListWithSpaces(resourcesOutput)) - } +// formatUnixNanoTime is a helper for formating time for output. +func (c *AllocStatusCommand) formatUnixNanoTime(nano int64) string { + t := time.Unix(0, nano) + return formatTime(t) } diff -Nru nomad-0.3.2+dfsg/command/check.go nomad-0.4.0+dfsg/command/check.go --- nomad-0.3.2+dfsg/command/check.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/check.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,135 @@ +package command + +import ( + "fmt" + "reflect" + "strconv" + "strings" + "time" +) + +const ( + HealthCritical = 2 + HealthWarn = 1 + HealthPass = 0 + HealthUnknown = 3 +) + +type AgentCheckCommand struct { + Meta +} + +func (c *AgentCheckCommand) Help() string { + helpText := ` +Usage: nomad check + + Display state of the Nomad agent. The exit code of the command is Nagios + compatible and could be used with alerting systems. + +General Options: + + ` + generalOptionsUsage() + ` + +Agent Check Options: + + -min-peers + Minimum number of peers that a server is expected to know. + + -min-servers + Minumum number of servers that a client is expected to know. +` + + return strings.TrimSpace(helpText) +} + +func (c *AgentCheckCommand) Synopsis() string { + return "Displays health of the local Nomad agent" +} + +func (c *AgentCheckCommand) Run(args []string) int { + var minPeers, minServers int + + flags := c.Meta.FlagSet("check", FlagSetClient) + flags.Usage = func() { c.Ui.Output(c.Help()) } + flags.IntVar(&minPeers, "min-peers", 0, "") + flags.IntVar(&minServers, "min-servers", 1, "") + + if err := flags.Parse(args); err != nil { + return 1 + } + + client, err := c.Meta.Client() + if err != nil { + c.Ui.Error(fmt.Sprintf("error initializing client: %s", err)) + return HealthCritical + } + + info, err := client.Agent().Self() + if err != nil { + c.Ui.Output(fmt.Sprintf("unable to query agent info: %v", err)) + return HealthCritical + } + if stats, ok := info["stats"]; !ok && (reflect.TypeOf(stats).Kind() == reflect.Map) { + c.Ui.Error("error getting stats from the agent api") + return 1 + } + if _, ok := info["stats"]["nomad"]; ok { + return c.checkServerHealth(info["stats"], minPeers) + } + + if _, ok := info["stats"]["client"]; ok { + return c.checkClientHealth(info["stats"], minServers) + } + return HealthWarn +} + +// checkServerHealth returns the health of a server. +// TODO Add more rules for determining server health +func (c *AgentCheckCommand) checkServerHealth(info map[string]interface{}, minPeers int) int { + raft := info["raft"].(map[string]interface{}) + knownPeers, err := strconv.Atoi(raft["num_peers"].(string)) + if err != nil { + c.Ui.Output(fmt.Sprintf("unable to get known peers: %v", err)) + return HealthCritical + } + + if knownPeers < minPeers { + c.Ui.Output(fmt.Sprintf("known peers: %v, is less than expected number of peers: %v", knownPeers, minPeers)) + return HealthCritical + } + return HealthPass +} + +// checkClientHealth returns the health of a client +func (c *AgentCheckCommand) checkClientHealth(info map[string]interface{}, minServers int) int { + clientStats := info["client"].(map[string]interface{}) + knownServers, err := strconv.Atoi(clientStats["known_servers"].(string)) + if err != nil { + c.Ui.Output(fmt.Sprintf("unable to get known servers: %v", err)) + return HealthCritical + } + + heartbeatTTL, err := time.ParseDuration(clientStats["heartbeat_ttl"].(string)) + if err != nil { + c.Ui.Output(fmt.Sprintf("unable to parse heartbeat TTL: %v", err)) + return HealthCritical + } + + lastHeartbeat, err := time.ParseDuration(clientStats["last_heartbeat"].(string)) + if err != nil { + c.Ui.Output(fmt.Sprintf("unable to parse last heartbeat: %v", err)) + return HealthCritical + } + + if lastHeartbeat > heartbeatTTL { + c.Ui.Output(fmt.Sprintf("last heartbeat was %q time ago, expected heartbeat ttl: %q", lastHeartbeat, heartbeatTTL)) + return HealthCritical + } + + if knownServers < minServers { + c.Ui.Output(fmt.Sprintf("known servers: %v, is less than expected number of servers: %v", knownServers, minServers)) + return HealthCritical + } + + return HealthPass +} diff -Nru nomad-0.3.2+dfsg/command/check_test.go nomad-0.4.0+dfsg/command/check_test.go --- nomad-0.3.2+dfsg/command/check_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/check_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,29 @@ +package command + +import ( + "fmt" + "testing" + + "github.com/mitchellh/cli" +) + +func TestAgentCheckCommand_ServerHealth(t *testing.T) { + srv, _, url := testServer(t, nil) + defer srv.Stop() + + ui := new(cli.MockUi) + cmd := &AgentCheckCommand{Meta: Meta{Ui: ui}} + address := fmt.Sprintf("-address=%s", url) + + code := cmd.Run([]string{address}) + if code != HealthPass { + t.Fatalf("expected exit: %v, actual: %d", HealthPass, code) + } + + minPeers := fmt.Sprintf("-min-peers=%v", 3) + code = cmd.Run([]string{address, minPeers}) + if code != HealthCritical { + t.Fatalf("expected exitcode: %v, actual: %v", HealthCritical, code) + } + +} diff -Nru nomad-0.3.2+dfsg/command/client_config_test.go nomad-0.4.0+dfsg/command/client_config_test.go --- nomad-0.3.2+dfsg/command/client_config_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/client_config_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -33,7 +33,7 @@ ui.ErrorWriter.Reset() // Set the servers list - code = cmd.Run([]string{"-address=" + url, "-update-servers", "foo", "bar"}) + code = cmd.Run([]string{"-address=" + url, "-update-servers", "127.0.0.42", "198.18.5.5"}) if code != 0 { t.Fatalf("expected exit 0, got: %d", code) } @@ -44,11 +44,11 @@ t.Fatalf("expect exit 0, got: %d", code) } out := ui.OutputWriter.String() - if !strings.Contains(out, "foo") { - t.Fatalf("missing foo") + if !strings.Contains(out, "127.0.0.42") { + t.Fatalf("missing 127.0.0.42") } - if !strings.Contains(out, "bar") { - t.Fatalf("missing bar") + if !strings.Contains(out, "198.18.5.5") { + t.Fatalf("missing 198.18.5.5") } } diff -Nru nomad-0.3.2+dfsg/command/eval_monitor.go nomad-0.4.0+dfsg/command/eval_monitor.go --- nomad-0.3.2+dfsg/command/eval_monitor.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/eval_monitor.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,81 +0,0 @@ -package command - -import ( - "fmt" - "strings" -) - -type EvalMonitorCommand struct { - Meta -} - -func (c *EvalMonitorCommand) Help() string { - helpText := ` -Usage: nomad eval-monitor [options] - - Start an interactive monitoring session for an existing evaluation. - The monitor command periodically polls for information about the - provided evaluation, including status updates, new allocations, - updates to allocations, and failures. Status is printed in near - real-time to the terminal. - - The command will exit when the given evaluation reaches a terminal - state (completed or failed). Exit code 0 is returned on successful - evaluation, and if there are no scheduling problems. If there are - job placement issues encountered (unsatisfiable constraints, - resource exhaustion, etc), then the exit code will be 2. Any other - errors, including client connection issues or internal errors, are - indicated by exit code 1. - -General Options: - - ` + generalOptionsUsage() + ` - -Eval Monitor Options: - - -verbose - Show full information. -` - return strings.TrimSpace(helpText) -} - -func (c *EvalMonitorCommand) Synopsis() string { - return "Monitor an evaluation interactively" -} - -func (c *EvalMonitorCommand) Run(args []string) int { - var verbose bool - - flags := c.Meta.FlagSet("eval-monitor", FlagSetClient) - flags.Usage = func() { c.Ui.Output(c.Help()) } - flags.BoolVar(&verbose, "verbose", false, "") - - if err := flags.Parse(args); err != nil { - return 1 - } - - // Truncate the id unless full length is requested - length := shortId - if verbose { - length = fullId - } - - // Check that we got exactly one eval ID - args = flags.Args() - if len(args) != 1 { - c.Ui.Error(c.Help()) - return 1 - } - evalID := args[0] - - // Get the HTTP client - client, err := c.Meta.Client() - if err != nil { - c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err)) - return 1 - } - - // Start monitoring - mon := newMonitor(c.Ui, client, length) - return mon.monitor(evalID, true) -} diff -Nru nomad-0.3.2+dfsg/command/eval_monitor_test.go nomad-0.4.0+dfsg/command/eval_monitor_test.go --- nomad-0.3.2+dfsg/command/eval_monitor_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/eval_monitor_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,46 +0,0 @@ -package command - -import ( - "strings" - "testing" - - "github.com/mitchellh/cli" -) - -func TestEvalMonitorCommand_Implements(t *testing.T) { - var _ cli.Command = &EvalMonitorCommand{} -} - -func TestEvalMonitorCommand_Fails(t *testing.T) { - srv, _, url := testServer(t, nil) - defer srv.Stop() - - ui := new(cli.MockUi) - cmd := &EvalMonitorCommand{Meta: Meta{Ui: ui}} - - // Fails on misuse - if code := cmd.Run([]string{"some", "bad", "args"}); code != 1 { - t.Fatalf("expected exit code 1, got: %d", code) - } - if out := ui.ErrorWriter.String(); !strings.Contains(out, cmd.Help()) { - t.Fatalf("expected help output, got: %s", out) - } - ui.ErrorWriter.Reset() - - // Fails on eval lookup failure - if code := cmd.Run([]string{"-address=" + url, "3E55C771-76FC-423B-BCED-3E5314F433B1"}); code != 1 { - t.Fatalf("expect exit 1, got: %d", code) - } - if out := ui.ErrorWriter.String(); !strings.Contains(out, "No evaluation(s) with prefix or id") { - t.Fatalf("expect not found error, got: %s", out) - } - ui.ErrorWriter.Reset() - - // Fails on connection failure - if code := cmd.Run([]string{"-address=nope", "12345678-abcd-efab-cdef-123456789abc"}); code != 1 { - t.Fatalf("expected exit code 1, got: %d", code) - } - if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error reading evaluation") { - t.Fatalf("expected failed query error, got: %s", out) - } -} diff -Nru nomad-0.3.2+dfsg/command/eval_status.go nomad-0.4.0+dfsg/command/eval_status.go --- nomad-0.3.2+dfsg/command/eval_status.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/eval_status.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,199 @@ +package command + +import ( + "fmt" + "sort" + "strings" + + "github.com/hashicorp/nomad/api" +) + +type EvalStatusCommand struct { + Meta +} + +func (c *EvalStatusCommand) Help() string { + helpText := ` +Usage: nomad eval-status [options] + + Display information about evaluations. This command can be used to inspect the + current status of an evaluation as well as determine the reason an evaluation + did not place all allocations. + +General Options: + + ` + generalOptionsUsage() + ` + +Eval Status Options: + + -monitor + Monitor an outstanding evaluation + + -verbose + Show full information. +` + + return strings.TrimSpace(helpText) +} + +func (c *EvalStatusCommand) Synopsis() string { + return "Display evaluation status and placement failure reasons" +} + +func (c *EvalStatusCommand) Run(args []string) int { + var monitor, verbose bool + + flags := c.Meta.FlagSet("eval-status", FlagSetClient) + flags.Usage = func() { c.Ui.Output(c.Help()) } + flags.BoolVar(&monitor, "monitor", false, "") + flags.BoolVar(&verbose, "verbose", false, "") + + if err := flags.Parse(args); err != nil { + return 1 + } + + // Check that we got exactly one evaluation ID + args = flags.Args() + if len(args) != 1 { + c.Ui.Error(c.Help()) + return 1 + } + evalID := args[0] + + // Get the HTTP client + client, err := c.Meta.Client() + if err != nil { + c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err)) + return 1 + } + + // Truncate the id unless full length is requested + length := shortId + if verbose { + length = fullId + } + + // Query the allocation info + if len(evalID) == 1 { + c.Ui.Error(fmt.Sprintf("Identifier must contain at least two characters.")) + return 1 + } + if len(evalID)%2 == 1 { + // Identifiers must be of even length, so we strip off the last byte + // to provide a consistent user experience. + evalID = evalID[:len(evalID)-1] + } + + evals, _, err := client.Evaluations().PrefixList(evalID) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error querying evaluation: %v", err)) + return 1 + } + if len(evals) == 0 { + c.Ui.Error(fmt.Sprintf("No evaluation(s) with prefix or id %q found", evalID)) + return 1 + } + if len(evals) > 1 { + // Format the evals + out := make([]string, len(evals)+1) + out[0] = "ID|Priority|Triggered By|Status|Placement Failures" + for i, eval := range evals { + failures, _ := evalFailureStatus(eval) + out[i+1] = fmt.Sprintf("%s|%d|%s|%s|%s", + limit(eval.ID, length), + eval.Priority, + eval.TriggeredBy, + eval.Status, + failures, + ) + } + c.Ui.Output(fmt.Sprintf("Prefix matched multiple evaluations\n\n%s", formatList(out))) + return 0 + } + + // If we are in monitor mode, monitor and exit + if monitor { + mon := newMonitor(c.Ui, client, length) + return mon.monitor(evals[0].ID, true) + } + + // Prefix lookup matched a single evaluation + eval, _, err := client.Evaluations().Info(evals[0].ID, nil) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error querying evaluation: %s", err)) + return 1 + } + + failureString, failures := evalFailureStatus(eval) + triggerNoun, triggerSubj := getTriggerDetails(eval) + statusDesc := eval.StatusDescription + if statusDesc == "" { + statusDesc = eval.Status + } + + // Format the evaluation data + basic := []string{ + fmt.Sprintf("ID|%s", limit(eval.ID, length)), + fmt.Sprintf("Status|%s", eval.Status), + fmt.Sprintf("Status Description|%s", statusDesc), + fmt.Sprintf("Type|%s", eval.Type), + fmt.Sprintf("TriggeredBy|%s", eval.TriggeredBy), + fmt.Sprintf("%s|%s", triggerNoun, triggerSubj), + fmt.Sprintf("Priority|%d", eval.Priority), + fmt.Sprintf("Placement Failures|%s", failureString), + } + + if verbose { + // NextEval, PreviousEval, BlockedEval + basic = append(basic, + fmt.Sprintf("Previous Eval|%s", eval.PreviousEval), + fmt.Sprintf("Next Eval|%s", eval.NextEval), + fmt.Sprintf("Blocked Eval|%s", eval.BlockedEval)) + } + c.Ui.Output(formatKV(basic)) + + if failures { + c.Ui.Output(c.Colorize().Color("\n[bold]Failed Placements[reset]")) + sorted := sortedTaskGroupFromMetrics(eval.FailedTGAllocs) + for _, tg := range sorted { + metrics := eval.FailedTGAllocs[tg] + + noun := "allocation" + if metrics.CoalescedFailures > 0 { + noun += "s" + } + c.Ui.Output(fmt.Sprintf("Task Group %q (failed to place %d %s):", tg, metrics.CoalescedFailures+1, noun)) + c.Ui.Output(formatAllocMetrics(metrics, false, " ")) + c.Ui.Output("") + } + + if eval.BlockedEval != "" { + c.Ui.Output(fmt.Sprintf("Evaluation %q waiting for additional capacity to place remainder", + limit(eval.BlockedEval, length))) + } + } + + return 0 +} + +func sortedTaskGroupFromMetrics(groups map[string]*api.AllocationMetric) []string { + tgs := make([]string, 0, len(groups)) + for tg, _ := range groups { + tgs = append(tgs, tg) + } + sort.Strings(tgs) + return tgs +} + +func getTriggerDetails(eval *api.Evaluation) (noun, subject string) { + switch eval.TriggeredBy { + case "job-register", "job-deregister", "periodic-job", "rolling-update": + return "Job ID", eval.JobID + case "node-update": + return "Node ID", eval.NodeID + case "max-plan-attempts": + return "Previous Eval", eval.PreviousEval + default: + return "", "" + } +} diff -Nru nomad-0.3.2+dfsg/command/eval_status_test.go nomad-0.4.0+dfsg/command/eval_status_test.go --- nomad-0.3.2+dfsg/command/eval_status_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/eval_status_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,46 @@ +package command + +import ( + "strings" + "testing" + + "github.com/mitchellh/cli" +) + +func TestEvalStatusCommand_Implements(t *testing.T) { + var _ cli.Command = &EvalStatusCommand{} +} + +func TestEvalStatusCommand_Fails(t *testing.T) { + srv, _, url := testServer(t, nil) + defer srv.Stop() + + ui := new(cli.MockUi) + cmd := &EvalStatusCommand{Meta: Meta{Ui: ui}} + + // Fails on misuse + if code := cmd.Run([]string{"some", "bad", "args"}); code != 1 { + t.Fatalf("expected exit code 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, cmd.Help()) { + t.Fatalf("expected help output, got: %s", out) + } + ui.ErrorWriter.Reset() + + // Fails on eval lookup failure + if code := cmd.Run([]string{"-address=" + url, "3E55C771-76FC-423B-BCED-3E5314F433B1"}); code != 1 { + t.Fatalf("expect exit 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "No evaluation(s) with prefix or id") { + t.Fatalf("expect not found error, got: %s", out) + } + ui.ErrorWriter.Reset() + + // Fails on connection failure + if code := cmd.Run([]string{"-address=nope", "12345678-abcd-efab-cdef-123456789abc"}); code != 1 { + t.Fatalf("expected exit code 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error querying evaluation") { + t.Fatalf("expected failed query error, got: %s", out) + } +} diff -Nru nomad-0.3.2+dfsg/command/fs_cat.go nomad-0.4.0+dfsg/command/fs_cat.go --- nomad-0.3.2+dfsg/command/fs_cat.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/fs_cat.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,143 +0,0 @@ -package command - -import ( - "fmt" - "io" - "os" - "strings" -) - -type FSCatCommand struct { - Meta -} - -func (f *FSCatCommand) Help() string { - helpText := ` - Usage: nomad fs cat - - Dispays a file in an allocation directory at the given path. - The path is relative to the allocation directory and defaults to root if unspecified. - - General Options: - - ` + generalOptionsUsage() + ` - -Cat Options: - - -verbose - Show full information. - - -job - Use a random allocation from a specified job-id. -` - return strings.TrimSpace(helpText) -} - -func (f *FSCatCommand) Synopsis() string { - return "Cat a file in an allocation directory" -} - -func (f *FSCatCommand) Run(args []string) int { - var verbose, job bool - flags := f.Meta.FlagSet("fs-list", FlagSetClient) - flags.Usage = func() { f.Ui.Output(f.Help()) } - flags.BoolVar(&verbose, "verbose", false, "") - flags.BoolVar(&job, "job", false, "") - - if err := flags.Parse(args); err != nil { - return 1 - } - args = flags.Args() - - if len(args) < 1 { - f.Ui.Error("allocation id is a required parameter") - return 1 - } - - path := "/" - if len(args) == 2 { - path = args[1] - } - - client, err := f.Meta.Client() - if err != nil { - f.Ui.Error(fmt.Sprintf("Error initializing client: %v", err)) - return 1 - } - - // If -job is specified, use random allocation, otherwise use provided allocation - allocID := args[0] - if job { - allocID, err = getRandomJobAlloc(client, args[0]) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying API: %v", err)) - return 1 - } - } - - // Truncate the id unless full length is requested - length := shortId - if verbose { - length = fullId - } - // Query the allocation info - if len(allocID) == 1 { - f.Ui.Error(fmt.Sprintf("Alloc ID must contain at least two characters.")) - return 1 - } - if len(allocID)%2 == 1 { - // Identifiers must be of even length, so we strip off the last byte - // to provide a consistent user experience. - allocID = allocID[:len(allocID)-1] - } - - allocs, _, err := client.Allocations().PrefixList(allocID) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %v", err)) - return 1 - } - if len(allocs) == 0 { - f.Ui.Error(fmt.Sprintf("No allocation(s) with prefix or id %q found", allocID)) - return 1 - } - if len(allocs) > 1 { - // Format the allocs - out := make([]string, len(allocs)+1) - out[0] = "ID|Eval ID|Job ID|Task Group|Desired Status|Client Status" - for i, alloc := range allocs { - out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", - limit(alloc.ID, length), - limit(alloc.EvalID, length), - alloc.JobID, - alloc.TaskGroup, - alloc.DesiredStatus, - alloc.ClientStatus, - ) - } - f.Ui.Output(fmt.Sprintf("Prefix matched multiple allocations\n\n%s", formatList(out))) - return 0 - } - // Prefix lookup matched a single allocation - alloc, _, err := client.Allocations().Info(allocs[0].ID, nil) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %s", err)) - return 1 - } - - if alloc.DesiredStatus == "failed" { - allocID := limit(alloc.ID, length) - msg := fmt.Sprintf(`The allocation %q failed to be placed. To see the cause, run: -nomad alloc-status %s`, allocID, allocID) - f.Ui.Error(msg) - return 0 - } - - // Get the contents of the file - r, _, err := client.AllocFS().Cat(alloc, path, nil) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error reading file: %v", err)) - return 1 - } - io.Copy(os.Stdout, r) - return 0 -} diff -Nru nomad-0.3.2+dfsg/command/fs.go nomad-0.4.0+dfsg/command/fs.go --- nomad-0.3.2+dfsg/command/fs.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/fs.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,11 +2,14 @@ import ( "fmt" + "io" "math/rand" + "os" + "strings" "time" + humanize "github.com/dustin/go-humanize" "github.com/hashicorp/nomad/api" - "github.com/mitchellh/cli" ) type FSCommand struct { @@ -14,7 +17,33 @@ } func (f *FSCommand) Help() string { - return "This command is accessed by using one of the subcommands below." + helpText := ` +Usage: nomad fs + + fs displays either the contents of an allocation directory for the passed allocation, + or displays the file at the given path. The path is relative to the root of the alloc + dir and defaults to root if unspecified. + +General Options: + + ` + generalOptionsUsage() + ` + +FS Specific Options: + + -H + Machine friendly output. + + -verbose + Show full information. + + -job + Use a random allocation from a specified job-id. + + -stat + Show file stat information instead of displaying the file, or listing the directory. + +` + return strings.TrimSpace(helpText) } func (f *FSCommand) Synopsis() string { @@ -22,7 +51,178 @@ } func (f *FSCommand) Run(args []string) int { - return cli.RunResultHelp + var verbose, machine, job, stat bool + flags := f.Meta.FlagSet("fs-list", FlagSetClient) + flags.Usage = func() { f.Ui.Output(f.Help()) } + flags.BoolVar(&verbose, "verbose", false, "") + flags.BoolVar(&machine, "H", false, "") + flags.BoolVar(&job, "job", false, "") + flags.BoolVar(&stat, "stat", false, "") + + if err := flags.Parse(args); err != nil { + return 1 + } + args = flags.Args() + + if len(args) < 1 { + if job { + f.Ui.Error("job ID is required") + } else { + f.Ui.Error("allocation ID is required") + } + + return 1 + } + + path := "/" + if len(args) == 2 { + path = args[1] + } + + client, err := f.Meta.Client() + if err != nil { + f.Ui.Error(fmt.Sprintf("Error initializing client: %v", err)) + return 1 + } + + // If -job is specified, use random allocation, otherwise use provided allocation + allocID := args[0] + if job { + allocID, err = getRandomJobAlloc(client, args[0]) + if err != nil { + f.Ui.Error(fmt.Sprintf("Error fetching allocations: %v", err)) + return 1 + } + } + + // Truncate the id unless full length is requested + length := shortId + if verbose { + length = fullId + } + // Query the allocation info + if len(allocID) == 1 { + f.Ui.Error(fmt.Sprintf("Alloc ID must contain at least two characters.")) + return 1 + } + if len(allocID)%2 == 1 { + // Identifiers must be of even length, so we strip off the last byte + // to provide a consistent user experience. + allocID = allocID[:len(allocID)-1] + } + + allocs, _, err := client.Allocations().PrefixList(allocID) + if err != nil { + f.Ui.Error(fmt.Sprintf("Error querying allocation: %v", err)) + return 1 + } + if len(allocs) == 0 { + f.Ui.Error(fmt.Sprintf("No allocation(s) with prefix or id %q found", allocID)) + return 1 + } + if len(allocs) > 1 { + // Format the allocs + out := make([]string, len(allocs)+1) + out[0] = "ID|Eval ID|Job ID|Task Group|Desired Status|Client Status" + for i, alloc := range allocs { + out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", + limit(alloc.ID, length), + limit(alloc.EvalID, length), + alloc.JobID, + alloc.TaskGroup, + alloc.DesiredStatus, + alloc.ClientStatus, + ) + } + f.Ui.Output(fmt.Sprintf("Prefix matched multiple allocations\n\n%s", formatList(out))) + return 0 + } + // Prefix lookup matched a single allocation + alloc, _, err := client.Allocations().Info(allocs[0].ID, nil) + if err != nil { + f.Ui.Error(fmt.Sprintf("Error querying allocation: %s", err)) + return 1 + } + + if alloc.DesiredStatus == "failed" { + allocID := limit(alloc.ID, length) + msg := fmt.Sprintf(`The allocation %q failed to be placed. To see the cause, run: +nomad alloc-status %s`, allocID, allocID) + f.Ui.Error(msg) + return 0 + } + + // Get file stat info + file, _, err := client.AllocFS().Stat(alloc, path, nil) + if err != nil { + f.Ui.Error(err.Error()) + return 1 + } + + // If we want file stats, print those and exit. + if stat { + // Display the file information + out := make([]string, 2) + out[0] = "Mode|Size|Modified Time|Name" + if file != nil { + fn := file.Name + if file.IsDir { + fn = fmt.Sprintf("%s/", fn) + } + var size string + if machine { + size = fmt.Sprintf("%d", file.Size) + } else { + size = humanize.IBytes(uint64(file.Size)) + } + out[1] = fmt.Sprintf("%s|%s|%s|%s", file.FileMode, size, + formatTime(file.ModTime), fn) + } + f.Ui.Output(formatList(out)) + return 0 + } + + // Determine if the path is a file or a directory. + if file.IsDir { + // We have a directory, list it. + files, _, err := client.AllocFS().List(alloc, path, nil) + if err != nil { + f.Ui.Error(fmt.Sprintf("Error listing alloc dir: %s", err)) + return 1 + } + // Display the file information in a tabular format + out := make([]string, len(files)+1) + out[0] = "Mode|Size|Modified Time|Name" + for i, file := range files { + fn := file.Name + if file.IsDir { + fn = fmt.Sprintf("%s/", fn) + } + var size string + if machine { + size = fmt.Sprintf("%d", file.Size) + } else { + size = humanize.IBytes(uint64(file.Size)) + } + out[i+1] = fmt.Sprintf("%s|%s|%s|%s", + file.FileMode, + size, + formatTime(file.ModTime), + fn, + ) + } + f.Ui.Output(formatList(out)) + } else { + // We have a file, cat it. + r, _, err := client.AllocFS().Cat(alloc, path, nil) + if err != nil { + f.Ui.Error(fmt.Sprintf("Error reading file: %s", err)) + return 1 + } + io.Copy(os.Stdout, r) + } + + return 0 } // Get Random Allocation ID from a known jobID. Prefer to use a running allocation, diff -Nru nomad-0.3.2+dfsg/command/fs_ls.go nomad-0.4.0+dfsg/command/fs_ls.go --- nomad-0.3.2+dfsg/command/fs_ls.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/fs_ls.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,172 +0,0 @@ -package command - -import ( - "fmt" - "strings" - - humanize "github.com/dustin/go-humanize" -) - -type FSListCommand struct { - Meta -} - -func (f *FSListCommand) Help() string { - helpText := ` -Usage: nomad fs ls - - ls displays the contents of the allocation directory for the passed allocation. The path - is relative to the root of the alloc dir and defaults to root if unspecified. - - General Options: - - ` + generalOptionsUsage() + ` - -Ls Options: - - -H - Machine friendly output. - - -verbose - Show full information. - - -job - Use a random allocation from a specified job-id. - -` - return strings.TrimSpace(helpText) -} - -func (f *FSListCommand) Synopsis() string { - return "List files in an allocation directory" -} - -func (f *FSListCommand) Run(args []string) int { - var verbose bool - var machine bool - var job bool - flags := f.Meta.FlagSet("fs-list", FlagSetClient) - flags.Usage = func() { f.Ui.Output(f.Help()) } - flags.BoolVar(&verbose, "verbose", false, "") - flags.BoolVar(&machine, "H", false, "") - flags.BoolVar(&job, "job", false, "") - - if err := flags.Parse(args); err != nil { - return 1 - } - args = flags.Args() - - if len(args) < 1 { - f.Ui.Error("allocation id is a required parameter") - return 1 - } - - path := "/" - if len(args) == 2 { - path = args[1] - } - - client, err := f.Meta.Client() - if err != nil { - f.Ui.Error(fmt.Sprintf("Error initializing client: %v", err)) - return 1 - } - - // If -job is specified, use random allocation, otherwise use provided allocation - allocID := args[0] - if job { - allocID, err = getRandomJobAlloc(client, args[0]) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error fetching allocations: %v", err)) - return 1 - } - } - - // Truncate the id unless full length is requested - length := shortId - if verbose { - length = fullId - } - // Query the allocation info - if len(allocID) == 1 { - f.Ui.Error(fmt.Sprintf("Alloc ID must contain at least two characters.")) - return 1 - } - if len(allocID)%2 == 1 { - // Identifiers must be of even length, so we strip off the last byte - // to provide a consistent user experience. - allocID = allocID[:len(allocID)-1] - } - - allocs, _, err := client.Allocations().PrefixList(allocID) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %v", err)) - return 1 - } - if len(allocs) == 0 { - f.Ui.Error(fmt.Sprintf("No allocation(s) with prefix or id %q found", allocID)) - return 1 - } - if len(allocs) > 1 { - // Format the allocs - out := make([]string, len(allocs)+1) - out[0] = "ID|Eval ID|Job ID|Task Group|Desired Status|Client Status" - for i, alloc := range allocs { - out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", - limit(alloc.ID, length), - limit(alloc.EvalID, length), - alloc.JobID, - alloc.TaskGroup, - alloc.DesiredStatus, - alloc.ClientStatus, - ) - } - f.Ui.Output(fmt.Sprintf("Prefix matched multiple allocations\n\n%s", formatList(out))) - return 0 - } - // Prefix lookup matched a single allocation - alloc, _, err := client.Allocations().Info(allocs[0].ID, nil) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %s", err)) - return 1 - } - - if alloc.DesiredStatus == "failed" { - allocID := limit(alloc.ID, length) - msg := fmt.Sprintf(`The allocation %q failed to be placed. To see the cause, run: -nomad alloc-status %s`, allocID, allocID) - f.Ui.Error(msg) - return 0 - } - // Get the file at the given path - files, _, err := client.AllocFS().List(alloc, path, nil) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error listing alloc dir: %v", err)) - return 1 - } - - // Display the file information in a tabular format - out := make([]string, len(files)+1) - out[0] = "Mode|Size|Modfied Time|Name" - for i, file := range files { - fn := file.Name - if file.IsDir { - fn = fmt.Sprintf("%s/", fn) - } - var size string - if machine { - size = fmt.Sprintf("%d", file.Size) - } else { - size = humanize.Bytes(uint64(file.Size)) - } - out[i+1] = fmt.Sprintf("%s|%s|%s|%s", - file.FileMode, - size, - formatTime(file.ModTime), - fn, - ) - } - - f.Ui.Output(formatList(out)) - return 0 -} diff -Nru nomad-0.3.2+dfsg/command/fs_stat.go nomad-0.4.0+dfsg/command/fs_stat.go --- nomad-0.3.2+dfsg/command/fs_stat.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/fs_stat.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,165 +0,0 @@ -package command - -import ( - "fmt" - "strings" - - humanize "github.com/dustin/go-humanize" -) - -type FSStatCommand struct { - Meta -} - -func (f *FSStatCommand) Help() string { - helpText := ` -Usage: nomad fs stat - - Displays information about an entry in an allocation directory at the given path. - The path is relative to the allocation directory and defaults to root if unspecified. - - General Options: - - ` + generalOptionsUsage() + ` - -Stat Options: - - -H - Machine friendly output. - - -verbose - Show full information. - - -job - Use a random allocation from a specified job-id. -` - return strings.TrimSpace(helpText) -} - -func (f *FSStatCommand) Synopsis() string { - return "Stat an entry in an allocation directory" -} - -func (f *FSStatCommand) Run(args []string) int { - var verbose bool - var machine bool - var job bool - flags := f.Meta.FlagSet("fs-list", FlagSetClient) - flags.Usage = func() { f.Ui.Output(f.Help()) } - flags.BoolVar(&verbose, "verbose", false, "") - flags.BoolVar(&machine, "H", false, "") - flags.BoolVar(&job, "job", false, "") - - if err := flags.Parse(args); err != nil { - return 1 - } - args = flags.Args() - - if len(args) < 1 { - f.Ui.Error("allocation id is a required parameter") - return 1 - } - - path := "/" - if len(args) == 2 { - path = args[1] - } - - client, err := f.Meta.Client() - if err != nil { - f.Ui.Error(fmt.Sprintf("Error initializing client: %v", err)) - return 1 - } - - allocID := args[0] - if job { - allocID, err = getRandomJobAlloc(client, args[0]) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying API: %v", err)) - return 1 - } - } - - // Truncate the id unless full length is requested - length := shortId - if verbose { - length = fullId - } - // Query the allocation info - if len(allocID) == 1 { - f.Ui.Error(fmt.Sprintf("Alloc ID must contain at least two characters.")) - return 1 - } - if len(allocID)%2 == 1 { - // Identifiers must be of even length, so we strip off the last byte - // to provide a consistent user experience. - allocID = allocID[:len(allocID)-1] - } - - allocs, _, err := client.Allocations().PrefixList(allocID) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %v", err)) - return 1 - } - if len(allocs) == 0 { - f.Ui.Error(fmt.Sprintf("No allocation(s) with prefix or id %q found", allocID)) - return 1 - } - if len(allocs) > 1 { - // Format the allocs - out := make([]string, len(allocs)+1) - out[0] = "ID|Eval ID|Job ID|Task Group|Desired Status|Client Status" - for i, alloc := range allocs { - out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", - limit(alloc.ID, length), - limit(alloc.EvalID, length), - alloc.JobID, - alloc.TaskGroup, - alloc.DesiredStatus, - alloc.ClientStatus, - ) - } - f.Ui.Output(fmt.Sprintf("Prefix matched multiple allocations\n\n%s", formatList(out))) - return 0 - } - // Prefix lookup matched a single allocation - alloc, _, err := client.Allocations().Info(allocs[0].ID, nil) - if err != nil { - f.Ui.Error(fmt.Sprintf("Error querying allocation: %s", err)) - return 1 - } - - if alloc.DesiredStatus == "failed" { - allocID := limit(alloc.ID, length) - msg := fmt.Sprintf(`The allocation %q failed to be placed. To see the cause, run: -nomad alloc-status %s`, allocID, allocID) - f.Ui.Error(msg) - return 0 - } - // Get the file information - file, _, err := client.AllocFS().Stat(alloc, path, nil) - if err != nil { - f.Ui.Error(err.Error()) - return 1 - } - - // Display the file information - out := make([]string, 2) - out[0] = "Mode|Size|Modified Time|Name" - if file != nil { - fn := file.Name - if file.IsDir { - fn = fmt.Sprintf("%s/", fn) - } - var size string - if machine { - size = fmt.Sprintf("%d", file.Size) - } else { - size = humanize.Bytes(uint64(file.Size)) - } - out[1] = fmt.Sprintf("%s|%s|%s|%s", file.FileMode, size, - formatTime(file.ModTime), fn) - } - f.Ui.Output(formatList(out)) - return 0 -} diff -Nru nomad-0.3.2+dfsg/command/helpers.go nomad-0.4.0+dfsg/command/helpers.go --- nomad-0.3.2+dfsg/command/helpers.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/helpers.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,6 +2,7 @@ import ( "fmt" + "strconv" "time" "github.com/hashicorp/nomad/api" @@ -45,7 +46,14 @@ // formatTime formats the time to string based on RFC822 func formatTime(t time.Time) string { - return t.Format("02/01/06 15:04:05 MST") + return t.Format("01/02/06 15:04:05 MST") +} + +// formatTimeDifference takes two times and determines their duration difference +// truncating to a passed unit. +// E.g. formatTimeDifference(first=1m22s33ms, second=1m28s55ms, time.Second) -> 6s +func formatTimeDifference(first, second time.Time, d time.Duration) string { + return second.Truncate(d).Sub(first.Truncate(d)).String() } // getLocalNodeID returns the node ID of the local Nomad Client and an error if @@ -69,3 +77,19 @@ return nodeID, nil } + +// evalFailureStatus returns whether the evaluation has failures and a string to +// display when presenting users with whether there are failures for the eval +func evalFailureStatus(eval *api.Evaluation) (string, bool) { + if eval == nil { + return "", false + } + + hasFailures := len(eval.FailedTGAllocs) != 0 + text := strconv.FormatBool(hasFailures) + if eval.Status == "blocked" { + text = "N/A - In Progress" + } + + return text, hasFailures +} diff -Nru nomad-0.3.2+dfsg/command/inspect.go nomad-0.4.0+dfsg/command/inspect.go --- nomad-0.3.2+dfsg/command/inspect.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/inspect.go 2016-06-28 21:26:34.000000000 +0000 @@ -84,7 +84,7 @@ } // Print the contents of the job - req := api.RegisterJobRequest{job} + req := api.RegisterJobRequest{Job: job} buf, err := json.MarshalIndent(req, "", " ") if err != nil { c.Ui.Error(fmt.Sprintf("Error converting job: %s", err)) diff -Nru nomad-0.3.2+dfsg/command/meta.go nomad-0.4.0+dfsg/command/meta.go --- nomad-0.3.2+dfsg/command/meta.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/meta.go 2016-06-28 21:26:34.000000000 +0000 @@ -9,12 +9,14 @@ "github.com/hashicorp/nomad/api" "github.com/mitchellh/cli" + "github.com/mitchellh/colorstring" ) const ( // Names of environment variables used to supply various // config options to the Nomad CLI. EnvNomadAddress = "NOMAD_ADDR" + EnvNomadRegion = "NOMAD_REGION" // Constants for CLI identifier length shortId = 8 @@ -38,6 +40,12 @@ // These are set by the command line flags. flagAddress string + + // Whether to not-colorize output + noColor bool + + // The region to send API requests + region string } // FlagSet returns a FlagSet with the common flags that every @@ -51,6 +59,8 @@ // client connectivity options. if fs&FlagSetClient != 0 { f.StringVar(&m.flagAddress, "address", "", "") + f.StringVar(&m.region, "region", "", "") + f.BoolVar(&m.noColor, "no-color", false, "") } // Create an io.Writer that writes to our UI properly for errors. @@ -79,9 +89,23 @@ if m.flagAddress != "" { config.Address = m.flagAddress } + if v := os.Getenv(EnvNomadRegion); v != "" { + config.Region = v + } + if m.region != "" { + config.Region = m.region + } return api.NewClient(config) } +func (m *Meta) Colorize() *colorstring.Colorize { + return &colorstring.Colorize{ + Colors: colorstring.DefaultColors, + Disable: m.noColor, + Reset: true, + } +} + // generalOptionsUsage returns the help string for the global options. func generalOptionsUsage() string { helpText := ` @@ -89,6 +113,14 @@ The address of the Nomad server. Overrides the NOMAD_ADDR environment variable if set. Default = http://127.0.0.1:4646 + + -region= + The region of the Nomad servers to forward commands to. + Overrides the NOMAD_REGION environment variable if set. + Defaults to the Agent's local region. + + -no-color + Disables colored command output. ` return strings.TrimSpace(helpText) } diff -Nru nomad-0.3.2+dfsg/command/meta_test.go nomad-0.4.0+dfsg/command/meta_test.go --- nomad-0.3.2+dfsg/command/meta_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/meta_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -18,7 +18,7 @@ }, { FlagSetClient, - []string{"address"}, + []string{"address", "no-color", "region"}, }, } diff -Nru nomad-0.3.2+dfsg/command/monitor.go nomad-0.4.0+dfsg/command/monitor.go --- nomad-0.3.2+dfsg/command/monitor.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/monitor.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,6 +2,7 @@ import ( "fmt" + "strings" "sync" "time" @@ -147,10 +148,14 @@ } else { switch { case existing.client != alloc.client: + description := "" + if alloc.clientDesc != "" { + description = fmt.Sprintf(" (%s)", alloc.clientDesc) + } // Allocation status has changed m.ui.Output(fmt.Sprintf( - "Allocation %q status changed: %q -> %q (%s)", - limit(alloc.id, m.length), existing.client, alloc.client, alloc.clientDesc)) + "Allocation %q status changed: %q -> %q%s", + limit(alloc.id, m.length), existing.client, alloc.client, description)) } } } @@ -288,9 +293,34 @@ m.update(state) switch eval.Status { - case structs.EvalStatusComplete, structs.EvalStatusFailed: - m.ui.Info(fmt.Sprintf("Evaluation %q finished with status %q", - limit(eval.ID, m.length), eval.Status)) + case structs.EvalStatusComplete, structs.EvalStatusFailed, structs.EvalStatusCancelled: + if len(eval.FailedTGAllocs) == 0 { + m.ui.Info(fmt.Sprintf("Evaluation %q finished with status %q", + limit(eval.ID, m.length), eval.Status)) + } else { + // There were failures making the allocations + schedFailure = true + m.ui.Info(fmt.Sprintf("Evaluation %q finished with status %q but failed to place all allocations:", + limit(eval.ID, m.length), eval.Status)) + + // Print the failures per task group + for tg, metrics := range eval.FailedTGAllocs { + noun := "allocation" + if metrics.CoalescedFailures > 0 { + noun += "s" + } + m.ui.Output(fmt.Sprintf("Task Group %q (failed to place %d %s):", tg, metrics.CoalescedFailures+1, noun)) + metrics := formatAllocMetrics(metrics, false, " ") + for _, line := range strings.Split(metrics, "\n") { + m.ui.Output(line) + } + } + + if eval.BlockedEval != "" { + m.ui.Output(fmt.Sprintf("Evaluation %q waiting for additional capacity to place remainder", + limit(eval.BlockedEval, m.length))) + } + } default: // Wait for the next update time.Sleep(updateWait) @@ -332,41 +362,50 @@ ui.Output(fmt.Sprintf("Allocation %q status %q (%d/%d nodes filtered)", limit(alloc.ID, length), alloc.ClientStatus, alloc.Metrics.NodesFiltered, alloc.Metrics.NodesEvaluated)) + ui.Output(formatAllocMetrics(alloc.Metrics, true, " ")) +} +func formatAllocMetrics(metrics *api.AllocationMetric, scores bool, prefix string) string { // Print a helpful message if we have an eligibility problem - if alloc.Metrics.NodesEvaluated == 0 { - ui.Output(" * No nodes were eligible for evaluation") + var out string + if metrics.NodesEvaluated == 0 { + out += fmt.Sprintf("%s* No nodes were eligible for evaluation\n", prefix) } // Print a helpful message if the user has asked for a DC that has no // available nodes. - for dc, available := range alloc.Metrics.NodesAvailable { + for dc, available := range metrics.NodesAvailable { if available == 0 { - ui.Output(fmt.Sprintf(" * No nodes are available in datacenter %q", dc)) + out += fmt.Sprintf("%s* No nodes are available in datacenter %q\n", prefix, dc) } } // Print filter info - for class, num := range alloc.Metrics.ClassFiltered { - ui.Output(fmt.Sprintf(" * Class %q filtered %d nodes", class, num)) + for class, num := range metrics.ClassFiltered { + out += fmt.Sprintf("%s* Class %q filtered %d nodes\n", prefix, class, num) } - for cs, num := range alloc.Metrics.ConstraintFiltered { - ui.Output(fmt.Sprintf(" * Constraint %q filtered %d nodes", cs, num)) + for cs, num := range metrics.ConstraintFiltered { + out += fmt.Sprintf("%s* Constraint %q filtered %d nodes\n", prefix, cs, num) } // Print exhaustion info - if ne := alloc.Metrics.NodesExhausted; ne > 0 { - ui.Output(fmt.Sprintf(" * Resources exhausted on %d nodes", ne)) + if ne := metrics.NodesExhausted; ne > 0 { + out += fmt.Sprintf("%s* Resources exhausted on %d nodes\n", prefix, ne) } - for class, num := range alloc.Metrics.ClassExhausted { - ui.Output(fmt.Sprintf(" * Class %q exhausted on %d nodes", class, num)) + for class, num := range metrics.ClassExhausted { + out += fmt.Sprintf("%s* Class %q exhausted on %d nodes\n", prefix, class, num) } - for dim, num := range alloc.Metrics.DimensionExhausted { - ui.Output(fmt.Sprintf(" * Dimension %q exhausted on %d nodes", dim, num)) + for dim, num := range metrics.DimensionExhausted { + out += fmt.Sprintf("%s* Dimension %q exhausted on %d nodes\n", prefix, dim, num) } // Print scores - for name, score := range alloc.Metrics.Scores { - ui.Output(fmt.Sprintf(" * Score %q = %f", name, score)) + if scores { + for name, score := range metrics.Scores { + out += fmt.Sprintf("%s* Score %q = %f\n", prefix, name, score) + } } + + out = strings.TrimSuffix(out, "\n") + return out } diff -Nru nomad-0.3.2+dfsg/command/node_status.go nomad-0.4.0+dfsg/command/node_status.go --- nomad-0.3.2+dfsg/command/node_status.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/node_status.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,14 +2,34 @@ import ( "fmt" + "math" "sort" "strings" + "time" + + "github.com/dustin/go-humanize" + "github.com/mitchellh/colorstring" "github.com/hashicorp/nomad/api" ) +const ( + // floatFormat is a format string for formatting floats. + floatFormat = "#,###.##" + + // bytesPerMegabyte is the number of bytes per MB + bytesPerMegabyte = 1024 * 1024 +) + type NodeStatusCommand struct { Meta + color *colorstring.Colorize + length int + short bool + verbose bool + list_allocs bool + self bool + stats bool } func (c *NodeStatusCommand) Help() string { @@ -20,9 +40,9 @@ returned includes only nodes which jobs may be scheduled to, and includes status and other high-level information. - If a node ID is passed, information for that specific node will - be displayed. If no node ID's are passed, then a short-hand - list of all nodes will be displayed. The -self flag is useful to + If a node ID is passed, information for that specific node will be displayed, + including resource usage statistics. If no node ID's are passed, then a + short-hand list of all nodes will be displayed. The -self flag is useful to quickly access the status of the local node. General Options: @@ -31,18 +51,21 @@ Node Status Options: + -self + Query the status of the local node. + + -stats + Display detailed resource usage statistics. + + -allocs + Display a count of running allocations for each node. + -short Display short output. Used only when a single node is being queried, and drops verbose output about node allocations. -verbose Display full information. - - -self - Query the status of the local node. - - -allocs - Display a count of running allocations for each node. ` return strings.TrimSpace(helpText) } @@ -52,14 +75,14 @@ } func (c *NodeStatusCommand) Run(args []string) int { - var short, verbose, list_allocs, self bool flags := c.Meta.FlagSet("node-status", FlagSetClient) flags.Usage = func() { c.Ui.Output(c.Help()) } - flags.BoolVar(&short, "short", false, "") - flags.BoolVar(&verbose, "verbose", false, "") - flags.BoolVar(&list_allocs, "allocs", false, "") - flags.BoolVar(&self, "self", false, "") + flags.BoolVar(&c.short, "short", false, "") + flags.BoolVar(&c.verbose, "verbose", false, "") + flags.BoolVar(&c.list_allocs, "allocs", false, "") + flags.BoolVar(&c.self, "self", false, "") + flags.BoolVar(&c.stats, "stats", false, "") if err := flags.Parse(args); err != nil { return 1 @@ -73,9 +96,9 @@ } // Truncate the id unless full length is requested - length := shortId - if verbose { - length = fullId + c.length = shortId + if c.verbose { + c.length = fullId } // Get the HTTP client @@ -86,7 +109,7 @@ } // Use list mode if no node name was provided - if len(args) == 0 && !self { + if len(args) == 0 && !c.self { // Query the node info nodes, _, err := client.Nodes().List(nil) if err != nil { @@ -101,20 +124,20 @@ // Format the nodes list out := make([]string, len(nodes)+1) - if list_allocs { + if c.list_allocs { out[0] = "ID|DC|Name|Class|Drain|Status|Running Allocs" } else { out[0] = "ID|DC|Name|Class|Drain|Status" } for i, node := range nodes { - if list_allocs { + if c.list_allocs { numAllocs, err := getRunningAllocs(client, node.ID) if err != nil { c.Ui.Error(fmt.Sprintf("Error querying node allocations: %s", err)) return 1 } out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%v|%s|%v", - limit(node.ID, length), + limit(node.ID, c.length), node.Datacenter, node.Name, node.NodeClass, @@ -123,7 +146,7 @@ len(numAllocs)) } else { out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%v|%s", - limit(node.ID, length), + limit(node.ID, c.length), node.Datacenter, node.Name, node.NodeClass, @@ -139,7 +162,7 @@ // Query the specific node nodeID := "" - if !self { + if !c.self { nodeID = args[0] } else { var err error @@ -175,7 +198,7 @@ out[0] = "ID|DC|Name|Class|Drain|Status" for i, node := range nodes { out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%v|%s", - limit(node.ID, length), + limit(node.ID, c.length), node.Datacenter, node.Name, node.NodeClass, @@ -193,57 +216,147 @@ return 1 } - // Format the output + return c.formatNode(client, node) +} + +func (c *NodeStatusCommand) formatNode(client *api.Client, node *api.Node) int { + // Get the host stats + hostStats, nodeStatsErr := client.Nodes().Stats(node.ID, nil) + if nodeStatsErr != nil { + c.Ui.Output("") + c.Ui.Error(fmt.Sprintf("error fetching node stats (HINT: ensure Client.Advertise.HTTP is set): %v", nodeStatsErr)) + } + + // Format the header output basic := []string{ - fmt.Sprintf("ID|%s", limit(node.ID, length)), + fmt.Sprintf("ID|%s", limit(node.ID, c.length)), fmt.Sprintf("Name|%s", node.Name), fmt.Sprintf("Class|%s", node.NodeClass), fmt.Sprintf("DC|%s", node.Datacenter), fmt.Sprintf("Drain|%v", node.Drain), fmt.Sprintf("Status|%s", node.Status), } - c.Ui.Output(formatKV(basic)) - - if !short { - resources, err := getResources(client, node) + if hostStats != nil { + uptime := time.Duration(hostStats.Uptime * uint64(time.Second)) + basic = append(basic, fmt.Sprintf("Uptime|%s", uptime.String())) + } + c.Ui.Output(c.Colorize().Color(formatKV(basic))) + + if !c.short { + // Get list of running allocations on the node + runningAllocs, err := getRunningAllocs(client, node.ID) if err != nil { - c.Ui.Error(fmt.Sprintf("Error querying node resources: %s", err)) + c.Ui.Error(fmt.Sprintf("Error querying node for running allocations: %s", err)) return 1 } - c.Ui.Output("\n==> Resource Utilization") - c.Ui.Output(formatList(resources)) - allocs, err := getAllocs(client, node, length) + allocatedResources := getAllocatedResources(client, runningAllocs, node) + c.Ui.Output(c.Colorize().Color("\n[bold]Allocated Resources[reset]")) + c.Ui.Output(formatList(allocatedResources)) + + actualResources, err := getActualResources(client, runningAllocs, node) + if err == nil { + c.Ui.Output(c.Colorize().Color("\n[bold]Allocation Resource Utilization[reset]")) + c.Ui.Output(formatList(actualResources)) + } + + hostResources, err := getHostResources(hostStats, node) if err != nil { - c.Ui.Error(fmt.Sprintf("Error querying node allocations: %s", err)) - return 1 + c.Ui.Output("") + c.Ui.Error(fmt.Sprintf("error fetching node stats (HINT: ensure Client.Advertise.HTTP is set): %v", err)) + } + if err == nil { + c.Ui.Output(c.Colorize().Color("\n[bold]Host Resource Utilization[reset]")) + c.Ui.Output(formatList(hostResources)) } - if len(allocs) > 1 { - c.Ui.Output("\n==> Allocations") - c.Ui.Output(formatList(allocs)) + if hostStats != nil && c.stats { + c.Ui.Output(c.Colorize().Color("\n[bold]CPU Stats[reset]")) + c.printCpuStats(hostStats) + c.Ui.Output(c.Colorize().Color("\n[bold]Memory Stats[reset]")) + c.printMemoryStats(hostStats) + c.Ui.Output(c.Colorize().Color("\n[bold]Disk Stats[reset]")) + c.printDiskStats(hostStats) } } - if verbose { - // Print the attributes - keys := make([]string, len(node.Attributes)) - for k := range node.Attributes { - keys = append(keys, k) + allocs, err := getAllocs(client, node, c.length) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error querying node allocations: %s", err)) + return 1 + } + + if len(allocs) > 1 { + c.Ui.Output(c.Colorize().Color("\n[bold]Allocations[reset]")) + c.Ui.Output(formatList(allocs)) + } + + if c.verbose { + c.formatAttributes(node) + } + return 0 + +} + +func (c *NodeStatusCommand) formatAttributes(node *api.Node) { + // Print the attributes + keys := make([]string, len(node.Attributes)) + for k := range node.Attributes { + keys = append(keys, k) + } + sort.Strings(keys) + + var attributes []string + for _, k := range keys { + if k != "" { + attributes = append(attributes, fmt.Sprintf("%s|%s", k, node.Attributes[k])) } - sort.Strings(keys) + } + c.Ui.Output(c.Colorize().Color("\n[bold]Attributes[reset]")) + c.Ui.Output(formatKV(attributes)) +} - var attributes []string - for _, k := range keys { - if k != "" { - attributes = append(attributes, fmt.Sprintf("%s|%s", k, node.Attributes[k])) - } +func (c *NodeStatusCommand) printCpuStats(hostStats *api.HostStats) { + l := len(hostStats.CPU) + for i, cpuStat := range hostStats.CPU { + cpuStatsAttr := make([]string, 4) + cpuStatsAttr[0] = fmt.Sprintf("CPU|%v", cpuStat.CPU) + cpuStatsAttr[1] = fmt.Sprintf("User|%v%%", humanize.FormatFloat(floatFormat, cpuStat.User)) + cpuStatsAttr[2] = fmt.Sprintf("System|%v%%", humanize.FormatFloat(floatFormat, cpuStat.System)) + cpuStatsAttr[3] = fmt.Sprintf("Idle|%v%%", humanize.FormatFloat(floatFormat, cpuStat.Idle)) + c.Ui.Output(formatKV(cpuStatsAttr)) + if i+1 < l { + c.Ui.Output("") } - c.Ui.Output("\n==> Attributes") - c.Ui.Output(formatKV(attributes)) } +} - return 0 +func (c *NodeStatusCommand) printMemoryStats(hostStats *api.HostStats) { + memoryStat := hostStats.Memory + memStatsAttr := make([]string, 4) + memStatsAttr[0] = fmt.Sprintf("Total|%v", humanize.IBytes(memoryStat.Total)) + memStatsAttr[1] = fmt.Sprintf("Available|%v", humanize.IBytes(memoryStat.Available)) + memStatsAttr[2] = fmt.Sprintf("Used|%v", humanize.IBytes(memoryStat.Used)) + memStatsAttr[3] = fmt.Sprintf("Free|%v", humanize.IBytes(memoryStat.Free)) + c.Ui.Output(formatKV(memStatsAttr)) +} + +func (c *NodeStatusCommand) printDiskStats(hostStats *api.HostStats) { + l := len(hostStats.DiskStats) + for i, diskStat := range hostStats.DiskStats { + diskStatsAttr := make([]string, 7) + diskStatsAttr[0] = fmt.Sprintf("Device|%s", diskStat.Device) + diskStatsAttr[1] = fmt.Sprintf("MountPoint|%s", diskStat.Mountpoint) + diskStatsAttr[2] = fmt.Sprintf("Size|%s", humanize.IBytes(diskStat.Size)) + diskStatsAttr[3] = fmt.Sprintf("Used|%s", humanize.IBytes(diskStat.Used)) + diskStatsAttr[4] = fmt.Sprintf("Available|%s", humanize.IBytes(diskStat.Available)) + diskStatsAttr[5] = fmt.Sprintf("Used Percent|%v%%", humanize.FormatFloat(floatFormat, diskStat.UsedPercent)) + diskStatsAttr[6] = fmt.Sprintf("Inodes Percent|%v%%", humanize.FormatFloat(floatFormat, diskStat.InodesUsedPercent)) + c.Ui.Output(formatKV(diskStatsAttr)) + if i+1 < l { + c.Ui.Output("") + } + } } // getRunningAllocs returns a slice of allocation id's running on the node @@ -281,27 +394,13 @@ return allocs, err } -// getResources returns the resource usage of the node. -func getResources(client *api.Client, node *api.Node) ([]string, error) { - var resources []string - var cpu, mem, disk, iops int - var totalCpu, totalMem, totalDisk, totalIops int - +// getAllocatedResources returns the resource usage of the node. +func getAllocatedResources(client *api.Client, runningAllocs []*api.Allocation, node *api.Node) []string { // Compute the total - r := node.Resources - res := node.Reserved - if res == nil { - res = &api.Resources{} - } - totalCpu = r.CPU - res.CPU - totalMem = r.MemoryMB - res.MemoryMB - totalDisk = r.DiskMB - res.DiskMB - totalIops = r.IOPS - res.IOPS - - // Get list of running allocations on the node - runningAllocs, err := getRunningAllocs(client, node.ID) + total := computeNodeTotalResources(node) // Get Resources + var cpu, mem, disk, iops int for _, alloc := range runningAllocs { cpu += alloc.Resources.CPU mem += alloc.Resources.MemoryMB @@ -309,17 +408,94 @@ iops += alloc.Resources.IOPS } - resources = make([]string, 2) - resources[0] = "CPU|Memory MB|Disk MB|IOPS" + resources := make([]string, 2) + resources[0] = "CPU|Memory|Disk|IOPS" resources[1] = fmt.Sprintf("%v/%v|%v/%v|%v/%v|%v/%v", cpu, - totalCpu, - mem, - totalMem, - disk, - totalDisk, + total.CPU, + humanize.IBytes(uint64(mem*bytesPerMegabyte)), + humanize.IBytes(uint64(total.MemoryMB*bytesPerMegabyte)), + humanize.IBytes(uint64(disk*bytesPerMegabyte)), + humanize.IBytes(uint64(total.DiskMB*bytesPerMegabyte)), iops, - totalIops) + total.IOPS) + + return resources +} + +// computeNodeTotalResources returns the total allocatable resources (resources +// minus reserved) +func computeNodeTotalResources(node *api.Node) api.Resources { + total := api.Resources{} - return resources, err + r := node.Resources + res := node.Reserved + if res == nil { + res = &api.Resources{} + } + total.CPU = r.CPU - res.CPU + total.MemoryMB = r.MemoryMB - res.MemoryMB + total.DiskMB = r.DiskMB - res.DiskMB + total.IOPS = r.IOPS - res.IOPS + return total +} + +// getActualResources returns the actual resource usage of the allocations. +func getActualResources(client *api.Client, runningAllocs []*api.Allocation, node *api.Node) ([]string, error) { + // Compute the total + total := computeNodeTotalResources(node) + + // Get Resources + var cpu float64 + var mem uint64 + for _, alloc := range runningAllocs { + // Make the call to the client to get the actual usage. + stats, err := client.Allocations().Stats(alloc, nil) + if err != nil { + return nil, err + } + + cpu += stats.ResourceUsage.CpuStats.TotalTicks + mem += stats.ResourceUsage.MemoryStats.RSS + } + + resources := make([]string, 2) + resources[0] = "CPU|Memory" + resources[1] = fmt.Sprintf("%v/%v|%v/%v", + math.Floor(cpu), + total.CPU, + humanize.IBytes(mem), + humanize.IBytes(uint64(total.MemoryMB*bytesPerMegabyte))) + + return resources, nil +} + +// getHostResources returns the actual resource usage of the node. +func getHostResources(hostStats *api.HostStats, node *api.Node) ([]string, error) { + if hostStats == nil { + return nil, fmt.Errorf("actual resource usage not present") + } + var resources []string + + // calculate disk usage + storageDevice := node.Attributes["unique.storage.volume"] + var diskUsed, diskSize uint64 + for _, disk := range hostStats.DiskStats { + if disk.Device == storageDevice { + diskUsed = disk.Used + diskSize = disk.Size + } + } + + resources = make([]string, 2) + resources[0] = "CPU|Memory|Disk" + resources[1] = fmt.Sprintf("%v/%v|%v/%v|%v/%v", + math.Floor(hostStats.CPUTicksConsumed), + node.Resources.CPU, + humanize.IBytes(hostStats.Memory.Used), + humanize.IBytes(hostStats.Memory.Total), + humanize.IBytes(diskUsed), + humanize.IBytes(diskSize), + ) + return resources, nil } diff -Nru nomad-0.3.2+dfsg/command/plan.go nomad-0.4.0+dfsg/command/plan.go --- nomad-0.3.2+dfsg/command/plan.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/plan.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,474 @@ +package command + +import ( + "fmt" + "sort" + "strings" + "time" + + "github.com/hashicorp/nomad/api" + "github.com/hashicorp/nomad/jobspec" + "github.com/hashicorp/nomad/scheduler" + "github.com/mitchellh/colorstring" +) + +const ( + jobModifyIndexHelp = `To submit the job with version verification run: + +nomad run -check-index %d %s + +When running the job with the check-index flag, the job will only be run if the +server side version matches the the job modify index returned. If the index has +changed, another user has modified the job and the plan's results are +potentially invalid.` +) + +type PlanCommand struct { + Meta + color *colorstring.Colorize +} + +func (c *PlanCommand) Help() string { + helpText := ` +Usage: nomad plan [options] + + Plan invokes a dry-run of the scheduler to determine the effects of submitting + either a new or updated version of a job. The plan will not result in any + changes to the cluster but gives insight into whether the job could be run + successfully and how it would affect existing allocations. + + A job modify index is returned with the plan. This value can be used when + submitting the job using "nomad run -check-index", which will check that the job + was not modified between the plan and run command before invoking the + scheduler. This ensures the job has not been modified since the plan. + + A structured diff between the local and remote job is displayed to + give insight into what the scheduler will attempt to do and why. + + If the job has specified the region, the -region flag and NOMAD_REGION + environment variable are overridden and the the job's region is used. + +General Options: + + ` + generalOptionsUsage() + ` + +Plan Options: + + -diff + Determines whether the diff between the remote job and planned job is shown. + Defaults to true. + + -verbose + Increase diff verbosity. +` + return strings.TrimSpace(helpText) +} + +func (c *PlanCommand) Synopsis() string { + return "Dry-run a job update to determine its effects" +} + +func (c *PlanCommand) Run(args []string) int { + var diff, verbose bool + + flags := c.Meta.FlagSet("plan", FlagSetClient) + flags.Usage = func() { c.Ui.Output(c.Help()) } + flags.BoolVar(&diff, "diff", true, "") + flags.BoolVar(&verbose, "verbose", false, "") + + if err := flags.Parse(args); err != nil { + return 1 + } + + // Check that we got exactly one job + args = flags.Args() + if len(args) != 1 { + c.Ui.Error(c.Help()) + return 1 + } + file := args[0] + + // Parse the job file + job, err := jobspec.ParseFile(file) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error parsing job file %s: %s", file, err)) + return 1 + } + + // Initialize any fields that need to be. + job.InitFields() + + // Check that the job is valid + if err := job.Validate(); err != nil { + c.Ui.Error(fmt.Sprintf("Error validating job: %s", err)) + return 1 + } + + // Convert it to something we can use + apiJob, err := convertStructJob(job) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error converting job: %s", err)) + return 1 + } + + // Get the HTTP client + client, err := c.Meta.Client() + if err != nil { + c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err)) + return 1 + } + + // Force the region to be that of the job. + if r := job.Region; r != "" { + client.SetRegion(r) + } + + // Submit the job + resp, _, err := client.Jobs().Plan(apiJob, diff, nil) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error during plan: %s", err)) + return 1 + } + + // Print the diff if not disabled + if diff { + c.Ui.Output(fmt.Sprintf("%s\n", + c.Colorize().Color(strings.TrimSpace(formatJobDiff(resp.Diff, verbose))))) + } + + // Print the scheduler dry-run output + c.Ui.Output(c.Colorize().Color("[bold]Scheduler dry-run:[reset]")) + c.Ui.Output(c.Colorize().Color(formatDryRun(resp))) + c.Ui.Output("") + + // Print the job index info + c.Ui.Output(c.Colorize().Color(formatJobModifyIndex(resp.JobModifyIndex, file))) + return 0 +} + +// formatJobModifyIndex produces a help string that displays the job modify +// index and how to submit a job with it. +func formatJobModifyIndex(jobModifyIndex uint64, jobName string) string { + help := fmt.Sprintf(jobModifyIndexHelp, jobModifyIndex, jobName) + out := fmt.Sprintf("[reset][bold]Job Modify Index: %d[reset]\n%s", jobModifyIndex, help) + return out +} + +// formatDryRun produces a string explaining the results of the dry run. +func formatDryRun(resp *api.JobPlanResponse) string { + var rolling *api.Evaluation + for _, eval := range resp.CreatedEvals { + if eval.TriggeredBy == "rolling-update" { + rolling = eval + } + } + + var out string + if len(resp.FailedTGAllocs) == 0 { + out = "[bold][green]- All tasks successfully allocated.[reset]\n" + } else { + out = "[bold][yellow]- WARNING: Failed to place all allocations.[reset]\n" + sorted := sortedTaskGroupFromMetrics(resp.FailedTGAllocs) + for _, tg := range sorted { + metrics := resp.FailedTGAllocs[tg] + + noun := "allocation" + if metrics.CoalescedFailures > 0 { + noun += "s" + } + out += fmt.Sprintf("%s[yellow]Task Group %q (failed to place %d %s):\n[reset]", strings.Repeat(" ", 2), tg, metrics.CoalescedFailures+1, noun) + out += fmt.Sprintf("[yellow]%s[reset]\n\n", formatAllocMetrics(metrics, false, strings.Repeat(" ", 4))) + } + if rolling == nil { + out = strings.TrimSuffix(out, "\n") + } + } + + if rolling != nil { + out += fmt.Sprintf("[green]- Rolling update, next evaluation will be in %s.\n", rolling.Wait) + } + + if next := resp.NextPeriodicLaunch; !next.IsZero() { + out += fmt.Sprintf("[green]- If submitted now, next periodic launch would be at %s (%s from now).\n", + formatTime(next), formatTimeDifference(time.Now().UTC(), next, time.Second)) + } + + out = strings.TrimSuffix(out, "\n") + return out +} + +// formatJobDiff produces an annoted diff of the the job. If verbose mode is +// set, added or deleted task groups and tasks are expanded. +func formatJobDiff(job *api.JobDiff, verbose bool) string { + marker, _ := getDiffString(job.Type) + out := fmt.Sprintf("%s[bold]Job: %q\n", marker, job.ID) + + // Determine the longest markers and fields so that the output can be + // properly aligned. + longestField, longestMarker := getLongestPrefixes(job.Fields, job.Objects) + for _, tg := range job.TaskGroups { + if _, l := getDiffString(tg.Type); l > longestMarker { + longestMarker = l + } + } + + // Only show the job's field and object diffs if the job is edited or + // verbose mode is set. + if job.Type == "Edited" || verbose { + fo := alignedFieldAndObjects(job.Fields, job.Objects, 0, longestField, longestMarker) + out += fo + if len(fo) > 0 { + out += "\n" + } + } + + // Print the task groups + for _, tg := range job.TaskGroups { + _, mLength := getDiffString(tg.Type) + kPrefix := longestMarker - mLength + out += fmt.Sprintf("%s\n", formatTaskGroupDiff(tg, kPrefix, verbose)) + } + + return out +} + +// formatTaskGroupDiff produces an annotated diff of a task group. If the +// verbose field is set, the task groups fields and objects are expanded even if +// the full object is an addition or removal. tgPrefix is the number of spaces to prefix +// the output of the task group. +func formatTaskGroupDiff(tg *api.TaskGroupDiff, tgPrefix int, verbose bool) string { + marker, _ := getDiffString(tg.Type) + out := fmt.Sprintf("%s%s[bold]Task Group: %q[reset]", marker, strings.Repeat(" ", tgPrefix), tg.Name) + + // Append the updates and colorize them + if l := len(tg.Updates); l > 0 { + order := make([]string, 0, l) + for updateType := range tg.Updates { + order = append(order, updateType) + } + + sort.Strings(order) + updates := make([]string, 0, l) + for _, updateType := range order { + count := tg.Updates[updateType] + var color string + switch updateType { + case scheduler.UpdateTypeIgnore: + case scheduler.UpdateTypeCreate: + color = "[green]" + case scheduler.UpdateTypeDestroy: + color = "[red]" + case scheduler.UpdateTypeMigrate: + color = "[blue]" + case scheduler.UpdateTypeInplaceUpdate: + color = "[cyan]" + case scheduler.UpdateTypeDestructiveUpdate: + color = "[yellow]" + } + updates = append(updates, fmt.Sprintf("[reset]%s%d %s", color, count, updateType)) + } + out += fmt.Sprintf(" (%s[reset])\n", strings.Join(updates, ", ")) + } else { + out += "[reset]\n" + } + + // Determine the longest field and markers so the output is properly + // aligned + longestField, longestMarker := getLongestPrefixes(tg.Fields, tg.Objects) + for _, task := range tg.Tasks { + if _, l := getDiffString(task.Type); l > longestMarker { + longestMarker = l + } + } + + // Only show the task groups's field and object diffs if the group is edited or + // verbose mode is set. + subStartPrefix := tgPrefix + 2 + if tg.Type == "Edited" || verbose { + fo := alignedFieldAndObjects(tg.Fields, tg.Objects, subStartPrefix, longestField, longestMarker) + out += fo + if len(fo) > 0 { + out += "\n" + } + } + + // Output the tasks + for _, task := range tg.Tasks { + _, mLength := getDiffString(task.Type) + prefix := longestMarker - mLength + out += fmt.Sprintf("%s\n", formatTaskDiff(task, subStartPrefix, prefix, verbose)) + } + + return out +} + +// formatTaskDiff produces an annotated diff of a task. If the verbose field is +// set, the tasks fields and objects are expanded even if the full object is an +// addition or removal. startPrefix is the number of spaces to prefix the output of +// the task and taskPrefix is the number of spaces to put between the marker and +// task name output. +func formatTaskDiff(task *api.TaskDiff, startPrefix, taskPrefix int, verbose bool) string { + marker, _ := getDiffString(task.Type) + out := fmt.Sprintf("%s%s%s[bold]Task: %q", + strings.Repeat(" ", startPrefix), marker, strings.Repeat(" ", taskPrefix), task.Name) + if len(task.Annotations) != 0 { + out += fmt.Sprintf(" [reset](%s)", colorAnnotations(task.Annotations)) + } + + if task.Type == "None" { + return out + } else if (task.Type == "Deleted" || task.Type == "Added") && !verbose { + // Exit early if the job was not edited and it isn't verbose output + return out + } else { + out += "\n" + } + + subStartPrefix := startPrefix + 2 + longestField, longestMarker := getLongestPrefixes(task.Fields, task.Objects) + out += alignedFieldAndObjects(task.Fields, task.Objects, subStartPrefix, longestField, longestMarker) + return out +} + +// formatObjectDiff produces an annotated diff of an object. startPrefix is the +// number of spaces to prefix the output of the object and keyPrefix is the number +// of spaces to put between the marker and object name output. +func formatObjectDiff(diff *api.ObjectDiff, startPrefix, keyPrefix int) string { + start := strings.Repeat(" ", startPrefix) + marker, _ := getDiffString(diff.Type) + out := fmt.Sprintf("%s%s%s%s {\n", start, marker, strings.Repeat(" ", keyPrefix), diff.Name) + + // Determine the length of the longest name and longest diff marker to + // properly align names and values + longestField, longestMarker := getLongestPrefixes(diff.Fields, diff.Objects) + subStartPrefix := startPrefix + 2 + out += alignedFieldAndObjects(diff.Fields, diff.Objects, subStartPrefix, longestField, longestMarker) + return fmt.Sprintf("%s\n%s}", out, start) +} + +// formatFieldDiff produces an annotated diff of a field. startPrefix is the +// number of spaces to prefix the output of the field, keyPrefix is the number +// of spaces to put between the marker and field name output and valuePrefix is +// the number of spaces to put infront of the value for aligning values. +func formatFieldDiff(diff *api.FieldDiff, startPrefix, keyPrefix, valuePrefix int) string { + marker, _ := getDiffString(diff.Type) + out := fmt.Sprintf("%s%s%s%s: %s", + strings.Repeat(" ", startPrefix), + marker, strings.Repeat(" ", keyPrefix), + diff.Name, + strings.Repeat(" ", valuePrefix)) + + switch diff.Type { + case "Added": + out += fmt.Sprintf("%q", diff.New) + case "Deleted": + out += fmt.Sprintf("%q", diff.Old) + case "Edited": + out += fmt.Sprintf("%q => %q", diff.Old, diff.New) + default: + out += fmt.Sprintf("%q", diff.New) + } + + // Color the annotations where possible + if l := len(diff.Annotations); l != 0 { + out += fmt.Sprintf(" (%s)", colorAnnotations(diff.Annotations)) + } + + return out +} + +// alignedFieldAndObjects is a helper method that prints fields and objects +// properly aligned. +func alignedFieldAndObjects(fields []*api.FieldDiff, objects []*api.ObjectDiff, + startPrefix, longestField, longestMarker int) string { + + var out string + numFields := len(fields) + numObjects := len(objects) + haveObjects := numObjects != 0 + for i, field := range fields { + _, mLength := getDiffString(field.Type) + kPrefix := longestMarker - mLength + vPrefix := longestField - len(field.Name) + out += formatFieldDiff(field, startPrefix, kPrefix, vPrefix) + + // Avoid a dangling new line + if i+1 != numFields || haveObjects { + out += "\n" + } + } + + for i, object := range objects { + _, mLength := getDiffString(object.Type) + kPrefix := longestMarker - mLength + out += formatObjectDiff(object, startPrefix, kPrefix) + + // Avoid a dangling new line + if i+1 != numObjects { + out += "\n" + } + } + + return out +} + +// getLongestPrefixes takes a list of fields and objects and determines the +// longest field name and the longest marker. +func getLongestPrefixes(fields []*api.FieldDiff, objects []*api.ObjectDiff) (longestField, longestMarker int) { + for _, field := range fields { + if l := len(field.Name); l > longestField { + longestField = l + } + if _, l := getDiffString(field.Type); l > longestMarker { + longestMarker = l + } + } + for _, obj := range objects { + if _, l := getDiffString(obj.Type); l > longestMarker { + longestMarker = l + } + } + return longestField, longestMarker +} + +// getDiffString returns a colored diff marker and the length of the string +// without color annotations. +func getDiffString(diffType string) (string, int) { + switch diffType { + case "Added": + return "[green]+[reset] ", 2 + case "Deleted": + return "[red]-[reset] ", 2 + case "Edited": + return "[light_yellow]+/-[reset] ", 4 + default: + return "", 0 + } +} + +// colorAnnotations returns a comma concatonated list of the annotations where +// the annotations are colored where possible. +func colorAnnotations(annotations []string) string { + l := len(annotations) + if l == 0 { + return "" + } + + colored := make([]string, l) + for i, annotation := range annotations { + switch annotation { + case "forces create": + colored[i] = fmt.Sprintf("[green]%s[reset]", annotation) + case "forces destroy": + colored[i] = fmt.Sprintf("[red]%s[reset]", annotation) + case "forces in-place update": + colored[i] = fmt.Sprintf("[cyan]%s[reset]", annotation) + case "forces create/destroy update": + colored[i] = fmt.Sprintf("[yellow]%s[reset]", annotation) + default: + colored[i] = annotation + } + } + + return strings.Join(colored, ", ") +} diff -Nru nomad-0.3.2+dfsg/command/plan_test.go nomad-0.4.0+dfsg/command/plan_test.go --- nomad-0.3.2+dfsg/command/plan_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/command/plan_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,103 @@ +package command + +import ( + "io/ioutil" + "os" + "strings" + "testing" + + "github.com/mitchellh/cli" +) + +func TestPlanCommand_Implements(t *testing.T) { + var _ cli.Command = &RunCommand{} +} + +func TestPlanCommand_Fails(t *testing.T) { + ui := new(cli.MockUi) + cmd := &PlanCommand{Meta: Meta{Ui: ui}} + + // Fails on misuse + if code := cmd.Run([]string{"some", "bad", "args"}); code != 1 { + t.Fatalf("expected exit code 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, cmd.Help()) { + t.Fatalf("expected help output, got: %s", out) + } + ui.ErrorWriter.Reset() + + // Fails when specified file does not exist + if code := cmd.Run([]string{"/unicorns/leprechauns"}); code != 1 { + t.Fatalf("expect exit 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error parsing") { + t.Fatalf("expect parsing error, got: %s", out) + } + ui.ErrorWriter.Reset() + + // Fails on invalid HCL + fh1, err := ioutil.TempFile("", "nomad") + if err != nil { + t.Fatalf("err: %s", err) + } + defer os.Remove(fh1.Name()) + if _, err := fh1.WriteString("nope"); err != nil { + t.Fatalf("err: %s", err) + } + if code := cmd.Run([]string{fh1.Name()}); code != 1 { + t.Fatalf("expect exit 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error parsing") { + t.Fatalf("expect parsing error, got: %s", err) + } + ui.ErrorWriter.Reset() + + // Fails on invalid job spec + fh2, err := ioutil.TempFile("", "nomad") + if err != nil { + t.Fatalf("err: %s", err) + } + defer os.Remove(fh2.Name()) + if _, err := fh2.WriteString(`job "job1" {}`); err != nil { + t.Fatalf("err: %s", err) + } + if code := cmd.Run([]string{fh2.Name()}); code != 1 { + t.Fatalf("expect exit 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error validating") { + t.Fatalf("expect validation error, got: %s", out) + } + ui.ErrorWriter.Reset() + + // Fails on connection failure (requires a valid job) + fh3, err := ioutil.TempFile("", "nomad") + if err != nil { + t.Fatalf("err: %s", err) + } + defer os.Remove(fh3.Name()) + _, err = fh3.WriteString(` +job "job1" { + type = "service" + datacenters = [ "dc1" ] + group "group1" { + count = 1 + task "task1" { + driver = "exec" + resources = { + cpu = 1000 + disk = 150 + memory = 512 + } + } + } +}`) + if err != nil { + t.Fatalf("err: %s", err) + } + if code := cmd.Run([]string{"-address=nope", fh3.Name()}); code != 1 { + t.Fatalf("expected exit code 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error during plan") { + t.Fatalf("expected failed query error, got: %s", out) + } +} diff -Nru nomad-0.3.2+dfsg/command/run.go nomad-0.4.0+dfsg/command/run.go --- nomad-0.3.2+dfsg/command/run.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/run.go 2016-06-28 21:26:34.000000000 +0000 @@ -5,6 +5,10 @@ "encoding/gob" "encoding/json" "fmt" + "io" + "os" + "regexp" + "strconv" "strings" "time" @@ -13,18 +17,29 @@ "github.com/hashicorp/nomad/nomad/structs" ) +var ( + // enforceIndexRegex is a regular expression which extracts the enforcement error + enforceIndexRegex = regexp.MustCompile(`\((Enforcing job modify index.*)\)`) +) + type RunCommand struct { Meta + + // The fields below can be overwritten for tests + testStdin io.Reader } func (c *RunCommand) Help() string { helpText := ` -Usage: nomad run [options] +Usage: nomad run [options] Starts running a new job or updates an existing job using - the specification located at . This is the main command + the specification located at . This is the main command used to interact with Nomad. + If the supplied path is "-", the jobfile is read from stdin. Otherwise + it is read from the file at the supplied path. + Upon successful job submission, this command will immediately enter an interactive monitor. This is useful to watch Nomad's internals make scheduling decisions and place the submitted work @@ -37,17 +52,27 @@ exit code will be 2. Any other errors, including client connection issues or internal errors, are indicated by exit code 1. + If the job has specified the region, the -region flag and NOMAD_REGION + environment variable are overridden and the the job's region is used. + General Options: ` + generalOptionsUsage() + ` Run Options: + -check-index + If set, the job is only registered or updated if the the passed + job modify index matches the server side version. If a check-index value of + zero is passed, the job is only registered if it does not yet exist. If a + non-zero value is passed, it ensures that the job is being updated from a + known state. The use of this flag is most common in conjunction with plan + command. + -detach - Return immediately instead of entering monitor mode. After job - submission, the evaluation ID will be printed to the screen. - You can use this ID to start a monitor using the eval-monitor - command later if needed. + Return immediately instead of entering monitor mode. After job submission, + the evaluation ID will be printed to the screen, which can be used to + examine the evaluation using the eval-status command. -verbose Display full information. @@ -65,12 +90,14 @@ func (c *RunCommand) Run(args []string) int { var detach, verbose, output bool + var checkIndexStr string flags := c.Meta.FlagSet("run", FlagSetClient) flags.Usage = func() { c.Ui.Output(c.Help()) } flags.BoolVar(&detach, "detach", false, "") flags.BoolVar(&verbose, "verbose", false, "") flags.BoolVar(&output, "output", false, "") + flags.StringVar(&checkIndexStr, "check-index", "", "") if err := flags.Parse(args); err != nil { return 1 @@ -88,12 +115,32 @@ c.Ui.Error(c.Help()) return 1 } - file := args[0] - // Parse the job file - job, err := jobspec.ParseFile(file) + // Read the Jobfile + path := args[0] + + var f io.Reader + switch path { + case "-": + if c.testStdin != nil { + f = c.testStdin + } else { + f = os.Stdin + } + default: + file, err := os.Open(path) + defer file.Close() + if err != nil { + c.Ui.Error(fmt.Sprintf("Error opening file %q: %v", path, err)) + return 1 + } + f = file + } + + // Parse the JobFile + job, err := jobspec.Parse(f) if err != nil { - c.Ui.Error(fmt.Sprintf("Error parsing job file %s: %s", file, err)) + c.Ui.Error(fmt.Sprintf("Error parsing job file %s: %v", f, err)) return 1 } @@ -102,7 +149,7 @@ // Check that the job is valid if err := job.Validate(); err != nil { - c.Ui.Error(fmt.Sprintf("Error validating job: %s", err)) + c.Ui.Error(fmt.Sprintf("Error validating job: %v", err)) return 1 } @@ -117,7 +164,7 @@ } if output { - req := api.RegisterJobRequest{apiJob} + req := api.RegisterJobRequest{Job: apiJob} buf, err := json.MarshalIndent(req, "", " ") if err != nil { c.Ui.Error(fmt.Sprintf("Error converting job: %s", err)) @@ -135,9 +182,37 @@ return 1 } + // Force the region to be that of the job. + if r := job.Region; r != "" { + client.SetRegion(r) + } + + // Parse the check-index + checkIndex, enforce, err := parseCheckIndex(checkIndexStr) + if err != nil { + c.Ui.Error(fmt.Sprintf("Error parsing check-index value %q: %v", checkIndexStr, err)) + return 1 + } + // Submit the job - evalID, _, err := client.Jobs().Register(apiJob, nil) + var evalID string + if enforce { + evalID, _, err = client.Jobs().EnforceRegister(apiJob, checkIndex, nil) + } else { + evalID, _, err = client.Jobs().Register(apiJob, nil) + } if err != nil { + if strings.Contains(err.Error(), api.RegisterEnforceIndexErrPrefix) { + // Format the error specially if the error is due to index + // enforcement + matches := enforceIndexRegex.FindStringSubmatch(err.Error()) + if len(matches) == 2 { + c.Ui.Error(matches[1]) // The matched group + c.Ui.Error("Job not updated") + return 1 + } + } + c.Ui.Error(fmt.Sprintf("Error submitting job: %s", err)) return 1 } @@ -146,7 +221,10 @@ if detach || periodic { c.Ui.Output("Job registration successful") if periodic { - c.Ui.Output(fmt.Sprintf("Approximate next launch time: %v", job.Periodic.Next(time.Now().UTC()))) + now := time.Now().UTC() + next := job.Periodic.Next(now) + c.Ui.Output(fmt.Sprintf("Approximate next launch time: %s (%s from now)", + formatTime(next), formatTimeDifference(now, next, time.Second))) } else { c.Ui.Output("Evaluation ID: " + evalID) } @@ -160,6 +238,17 @@ } +// parseCheckIndex parses the check-index flag and returns the index, whether it +// was set and potentially an error during parsing. +func parseCheckIndex(input string) (uint64, bool, error) { + if input == "" { + return 0, false, nil + } + + u, err := strconv.ParseUint(input, 10, 64) + return u, true, err +} + // convertStructJob is used to take a *structs.Job and convert it to an *api.Job. // This function is just a hammer and probably needs to be revisited. func convertStructJob(in *structs.Job) (*api.Job, error) { diff -Nru nomad-0.3.2+dfsg/command/run_test.go nomad-0.4.0+dfsg/command/run_test.go --- nomad-0.3.2+dfsg/command/run_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/run_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -66,7 +66,7 @@ if code := cmd.Run([]string{"/unicorns/leprechauns"}); code != 1 { t.Fatalf("expect exit 1, got: %d", code) } - if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error parsing") { + if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error opening") { t.Fatalf("expect parsing error, got: %s", out) } ui.ErrorWriter.Reset() @@ -136,4 +136,57 @@ if out := ui.ErrorWriter.String(); !strings.Contains(out, "Error submitting job") { t.Fatalf("expected failed query error, got: %s", out) } + + // Fails on invalid check-index (requires a valid job) + if code := cmd.Run([]string{"-check-index=bad", fh3.Name()}); code != 1 { + t.Fatalf("expected exit code 1, got: %d", code) + } + if out := ui.ErrorWriter.String(); !strings.Contains(out, "parsing check-index") { + t.Fatalf("expected parse error, got: %s", out) + } + ui.ErrorWriter.Reset() + +} + +func TestRunCommand_From_STDIN(t *testing.T) { + stdinR, stdinW, err := os.Pipe() + if err != nil { + t.Fatalf("err: %s", err) + } + + ui := new(cli.MockUi) + cmd := &RunCommand{ + Meta: Meta{Ui: ui}, + testStdin: stdinR, + } + + go func() { + stdinW.WriteString(` +job "job1" { + type = "service" + datacenters = [ "dc1" ] + group "group1" { + count = 1 + task "task1" { + driver = "exec" + resources = { + cpu = 1000 + disk = 150 + memory = 512 + } + } + } +}`) + stdinW.Close() + }() + + args := []string{"-"} + if code := cmd.Run(args); code != 1 { + t.Fatalf("expected exit code 1, got %d: %q", code, ui.ErrorWriter.String()) + } + + if out := ui.ErrorWriter.String(); !strings.Contains(out, "connection refused") { + t.Fatalf("expected runtime error, got: %s", out) + } + ui.ErrorWriter.Reset() } diff -Nru nomad-0.3.2+dfsg/command/server_members.go nomad-0.4.0+dfsg/command/server_members.go --- nomad-0.3.2+dfsg/command/server_members.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/server_members.go 2016-06-28 21:26:34.000000000 +0000 @@ -23,7 +23,7 @@ ` + generalOptionsUsage() + ` -Agent Members Options: +Server Members Options: -detailed Show detailed information about each member. This dumps diff -Nru nomad-0.3.2+dfsg/command/status.go nomad-0.4.0+dfsg/command/status.go --- nomad-0.3.2+dfsg/command/status.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/status.go 2016-06-28 21:26:34.000000000 +0000 @@ -11,9 +11,16 @@ "github.com/hashicorp/nomad/nomad/structs" ) +const ( + // maxFailedTGs is the maximum number of task groups we show failure reasons + // for before defering to eval-status + maxFailedTGs = 5 +) + type StatusCommand struct { Meta - length int + length int + showEvals, verbose bool } func (c *StatusCommand) Help() string { @@ -31,8 +38,10 @@ -short Display short output. Used only when a single job is being - queried, and drops verbose information about allocations - and evaluations. + queried, and drops verbose information about allocations. + + -evals + Display the evaluations associated with the job. -verbose Display full information. @@ -45,12 +54,13 @@ } func (c *StatusCommand) Run(args []string) int { - var short, verbose bool + var short bool flags := c.Meta.FlagSet("status", FlagSetClient) flags.Usage = func() { c.Ui.Output(c.Help()) } flags.BoolVar(&short, "short", false, "") - flags.BoolVar(&verbose, "verbose", false, "") + flags.BoolVar(&c.showEvals, "evals", false, "") + flags.BoolVar(&c.verbose, "verbose", false, "") if err := flags.Parse(args); err != nil { return 1 @@ -65,7 +75,7 @@ // Truncate the id unless full length is requested c.length = shortId - if verbose { + if c.verbose { c.length = fullId } @@ -154,8 +164,11 @@ } if periodic { - basic = append(basic, fmt.Sprintf("Next Periodic Launch|%v", - sJob.Periodic.Next(time.Now().UTC()))) + now := time.Now().UTC() + next := sJob.Periodic.Next(now) + basic = append(basic, fmt.Sprintf("Next Periodic Launch|%s", + fmt.Sprintf("%s (%s from now)", + formatTime(next), formatTimeDifference(now, next, time.Second)))) } c.Ui.Output(formatKV(basic)) @@ -221,49 +234,108 @@ func (c *StatusCommand) outputJobInfo(client *api.Client, job *api.Job) error { var evals, allocs []string + // Query the allocations + jobAllocs, _, err := client.Jobs().Allocations(job.ID, nil) + if err != nil { + return fmt.Errorf("Error querying job allocations: %s", err) + } + // Query the evaluations jobEvals, _, err := client.Jobs().Evaluations(job.ID, nil) if err != nil { return fmt.Errorf("Error querying job evaluations: %s", err) } - // Query the allocations - jobAllocs, _, err := client.Jobs().Allocations(job.ID, nil) - if err != nil { - return fmt.Errorf("Error querying job allocations: %s", err) - } + // Determine latest evaluation with failures whose follow up hasn't + // completed, this is done while formatting + var latestFailedPlacement *api.Evaluation + blockedEval := false // Format the evals evals = make([]string, len(jobEvals)+1) - evals[0] = "ID|Priority|Triggered By|Status" + evals[0] = "ID|Priority|Triggered By|Status|Placement Failures" for i, eval := range jobEvals { - evals[i+1] = fmt.Sprintf("%s|%d|%s|%s", + failures, _ := evalFailureStatus(eval) + evals[i+1] = fmt.Sprintf("%s|%d|%s|%s|%s", limit(eval.ID, c.length), eval.Priority, eval.TriggeredBy, - eval.Status) + eval.Status, + failures, + ) + + if eval.Status == "blocked" { + blockedEval = true + } + + if len(eval.FailedTGAllocs) == 0 { + // Skip evals without failures + continue + } + + if latestFailedPlacement == nil || latestFailedPlacement.CreateIndex < eval.CreateIndex { + latestFailedPlacement = eval + } + } + + if c.verbose || c.showEvals { + c.Ui.Output(c.Colorize().Color("\n[bold]Evaluations[reset]")) + c.Ui.Output(formatList(evals)) + } + + if blockedEval && latestFailedPlacement != nil { + c.outputFailedPlacements(latestFailedPlacement) } // Format the allocs - allocs = make([]string, len(jobAllocs)+1) - allocs[0] = "ID|Eval ID|Node ID|Task Group|Desired|Status" - for i, alloc := range jobAllocs { - allocs[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", - limit(alloc.ID, c.length), - limit(alloc.EvalID, c.length), - limit(alloc.NodeID, c.length), - alloc.TaskGroup, - alloc.DesiredStatus, - alloc.ClientStatus) - } - - c.Ui.Output("\n==> Evaluations") - c.Ui.Output(formatList(evals)) - c.Ui.Output("\n==> Allocations") - c.Ui.Output(formatList(allocs)) + c.Ui.Output(c.Colorize().Color("\n[bold]Allocations[reset]")) + if len(jobAllocs) > 0 { + allocs = make([]string, len(jobAllocs)+1) + allocs[0] = "ID|Eval ID|Node ID|Task Group|Desired|Status" + for i, alloc := range jobAllocs { + allocs[i+1] = fmt.Sprintf("%s|%s|%s|%s|%s|%s", + limit(alloc.ID, c.length), + limit(alloc.EvalID, c.length), + limit(alloc.NodeID, c.length), + alloc.TaskGroup, + alloc.DesiredStatus, + alloc.ClientStatus) + } + + c.Ui.Output(formatList(allocs)) + } else { + c.Ui.Output("No allocations placed") + } return nil } +func (c *StatusCommand) outputFailedPlacements(failedEval *api.Evaluation) { + if failedEval == nil || len(failedEval.FailedTGAllocs) == 0 { + return + } + + c.Ui.Output(c.Colorize().Color("\n[bold]Placement Failure[reset]")) + + sorted := sortedTaskGroupFromMetrics(failedEval.FailedTGAllocs) + for i, tg := range sorted { + if i >= maxFailedTGs { + break + } + + c.Ui.Output(fmt.Sprintf("Task Group %q:", tg)) + metrics := failedEval.FailedTGAllocs[tg] + c.Ui.Output(formatAllocMetrics(metrics, false, " ")) + if i != len(sorted)-1 { + c.Ui.Output("") + } + } + + if len(sorted) > maxFailedTGs { + trunc := fmt.Sprintf("\nPlacement failures truncated. To see remainder run:\nnomad eval-status %s", failedEval.ID) + c.Ui.Output(trunc) + } +} + // convertApiJob is used to take a *api.Job and convert it to an *struct.Job. // This function is just a hammer and probably needs to be revisited. func convertApiJob(in *api.Job) (*structs.Job, error) { diff -Nru nomad-0.3.2+dfsg/command/status_test.go nomad-0.4.0+dfsg/command/status_test.go --- nomad-0.3.2+dfsg/command/status_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/status_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -60,6 +60,35 @@ if strings.Contains(out, "job1_sfx") || !strings.Contains(out, "job2_sfx") { t.Fatalf("expected only job2_sfx, got: %s", out) } + if !strings.Contains(out, "Allocations") { + t.Fatalf("should dump allocations") + } + ui.OutputWriter.Reset() + + // Query a single job showing evals + if code := cmd.Run([]string{"-address=" + url, "-evals", "job2_sfx"}); code != 0 { + t.Fatalf("expected exit 0, got: %d", code) + } + out = ui.OutputWriter.String() + if strings.Contains(out, "job1_sfx") || !strings.Contains(out, "job2_sfx") { + t.Fatalf("expected only job2_sfx, got: %s", out) + } + if !strings.Contains(out, "Evaluations") { + t.Fatalf("should dump evaluations") + } + if !strings.Contains(out, "Allocations") { + t.Fatalf("should dump allocations") + } + ui.OutputWriter.Reset() + + // Query a single job in verbose mode + if code := cmd.Run([]string{"-address=" + url, "-verbose", "job2_sfx"}); code != 0 { + t.Fatalf("expected exit 0, got: %d", code) + } + out = ui.OutputWriter.String() + if strings.Contains(out, "job1_sfx") || !strings.Contains(out, "job2_sfx") { + t.Fatalf("expected only job2_sfx, got: %s", out) + } if !strings.Contains(out, "Evaluations") { t.Fatalf("should dump evaluations") } diff -Nru nomad-0.3.2+dfsg/command/stop.go nomad-0.4.0+dfsg/command/stop.go --- nomad-0.3.2+dfsg/command/stop.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/command/stop.go 2016-06-28 21:26:34.000000000 +0000 @@ -27,9 +27,9 @@ -detach Return immediately instead of entering monitor mode. After the - deregister command is submitted, a new evaluation ID is printed - to the screen, which can be used to call up a monitor later if - needed using the eval-monitor command. + deregister command is submitted, a new evaluation ID is printed to the + screen, which can be used to examine the evaluation using the eval-status + command. -yes Automatic yes to prompts. diff -Nru nomad-0.3.2+dfsg/commands.go nomad-0.4.0+dfsg/commands.go --- nomad-0.3.2+dfsg/commands.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/commands.go 2016-06-28 21:26:34.000000000 +0000 @@ -30,7 +30,6 @@ Meta: meta, }, nil }, - "agent": func() (cli.Command, error) { return &agent.Command{ Revision: GitCommit, @@ -40,21 +39,23 @@ ShutdownCh: make(chan struct{}), }, nil }, - "agent-info": func() (cli.Command, error) { return &command.AgentInfoCommand{ Meta: meta, }, nil }, - + "check": func() (cli.Command, error) { + return &command.AgentCheckCommand{ + Meta: meta, + }, nil + }, "client-config": func() (cli.Command, error) { return &command.ClientConfigCommand{ Meta: meta, }, nil }, - - "eval-monitor": func() (cli.Command, error) { - return &command.EvalMonitorCommand{ + "eval-status": func() (cli.Command, error) { + return &command.EvalStatusCommand{ Meta: meta, }, nil }, @@ -68,21 +69,6 @@ Meta: meta, }, nil }, - "fs ls": func() (cli.Command, error) { - return &command.FSListCommand{ - Meta: meta, - }, nil - }, - "fs stat": func() (cli.Command, error) { - return &command.FSStatCommand{ - Meta: meta, - }, nil - }, - "fs cat": func() (cli.Command, error) { - return &command.FSCatCommand{ - Meta: meta, - }, nil - }, "init": func() (cli.Command, error) { return &command.InitCommand{ Meta: meta, @@ -98,13 +84,18 @@ Meta: meta, }, nil }, - "node-status": func() (cli.Command, error) { return &command.NodeStatusCommand{ Meta: meta, }, nil }, + "plan": func() (cli.Command, error) { + return &command.PlanCommand{ + Meta: meta, + }, nil + }, + "run": func() (cli.Command, error) { return &command.RunCommand{ Meta: meta, @@ -120,13 +111,11 @@ Meta: meta, }, nil }, - "server-join": func() (cli.Command, error) { return &command.ServerJoinCommand{ Meta: meta, }, nil }, - "server-members": func() (cli.Command, error) { return &command.ServerMembersCommand{ Meta: meta, @@ -137,19 +126,16 @@ Meta: meta, }, nil }, - "stop": func() (cli.Command, error) { return &command.StopCommand{ Meta: meta, }, nil }, - "validate": func() (cli.Command, error) { return &command.ValidateCommand{ Meta: meta, }, nil }, - "version": func() (cli.Command, error) { ver := Version rel := VersionPrerelease diff -Nru nomad-0.3.2+dfsg/debian/changelog nomad-0.4.0+dfsg/debian/changelog --- nomad-0.3.2+dfsg/debian/changelog 2016-06-16 10:24:24.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/changelog 2016-07-16 23:28:16.000000000 +0000 @@ -1,3 +1,21 @@ +nomad (0.4.0+dfsg-1) unstable; urgency=medium + + * New upstream release [June 2016] (Closes: #831036). + + temporary switched to bundled "github.com/hashicorp/consul". + * Build-Depends: + = golang-github-fsouza-go-dockerclient-dev (>= 0.0+git20160622~) + = golang-github-hashicorp-scada-client-dev (>= 0.0~git20160601~) + + golang-github-mitchellh-colorstring-dev + + golang-github-mitchellh-go-ps-dev + + golang-github-nytimes-gziphandler-dev + + golang-golang-x-tools-dev + * rules: --parallel build. + * init: added support for 'reload' command. + + Depends += "procps". + * New patches to disable some failing tests. + + -- Dmitry Smirnov Sun, 17 Jul 2016 09:28:09 +1000 + nomad (0.3.2+dfsg-1) unstable; urgency=medium * New upstream release [April 2016]. diff -Nru nomad-0.3.2+dfsg/debian/control nomad-0.4.0+dfsg/debian/control --- nomad-0.3.2+dfsg/debian/control 2016-06-16 10:24:07.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/control 2016-07-16 22:52:46.000000000 +0000 @@ -14,7 +14,7 @@ ,golang-github-docker-docker-dev ,golang-github-docker-go-units-dev ,golang-github-dustin-go-humanize-dev - ,golang-github-fsouza-go-dockerclient-dev (>= 0.0+git20160316~) + ,golang-github-fsouza-go-dockerclient-dev (>= 0.0+git20160622~) ,golang-github-go-ini-ini-dev ,golang-dbus-dev | golang-github-godbus-dbus-dev ,golang-goprotobuf-dev | golang-github-golang-protobuf-dev @@ -38,15 +38,18 @@ ,golang-github-hashicorp-net-rpc-msgpackrpc-dev (>= 0.0~git20151116~) ,golang-github-hashicorp-raft-dev (>= 0.0~git20160317~) ,golang-github-hashicorp-raft-boltdb-dev - ,golang-github-hashicorp-scada-client-dev + ,golang-github-hashicorp-scada-client-dev (>= 0.0~git20160601~) ,golang-github-hashicorp-serf-dev ,golang-github-hashicorp-yamux-dev ,golang-github-jmespath-go-jmespath-dev ,golang-github-kardianos-osext-dev ,golang-github-mattn-go-isatty-dev + ,golang-github-nytimes-gziphandler-dev ,golang-protobuf-extensions-dev | golang-github-matttproud-protobuf-extensions-dev ,golang-github-mitchellh-cli-dev (>= 0.0~git20160203~) ,golang-github-mitchellh-copystructure-dev + ,golang-github-mitchellh-colorstring-dev + ,golang-github-mitchellh-go-ps-dev ,golang-github-mitchellh-hashstructure-dev ,golang-github-mitchellh-mapstructure-dev ,golang-github-mitchellh-reflectwalk-dev @@ -58,6 +61,7 @@ ,golang-github-ryanuber-columnize-dev (>= 2.1.0~) ,golang-github-ugorji-go-codec-dev ,golang-golang-x-sys-dev + ,golang-golang-x-tools-dev Standards-Version: 3.9.8 Homepage: https://github.com/hashicorp/nomad Vcs-Browser: https://anonscm.debian.org/cgit/pkg-go/packages/nomad.git @@ -70,6 +74,7 @@ Depends: ${shlibs:Depends}, ${misc:Depends} ,pipexec + ,procps Description: distributed, highly available, datacenter-aware scheduler Nomad is a cluster manager, designed for both long lived services and short lived batch processing workloads. Developers use a declarative job diff -Nru nomad-0.3.2+dfsg/debian/copyright nomad-0.4.0+dfsg/debian/copyright --- nomad-0.3.2+dfsg/debian/copyright 2016-04-26 00:01:09.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/copyright 2016-07-15 10:23:59.000000000 +0000 @@ -12,21 +12,17 @@ vendor/github.com/armon/circbuf vendor/github.com/armon/go-metrics vendor/github.com/armon/go-radix - vendor/github.com/beorn7/perks vendor/github.com/boltdb/bolt - vendor/github.com/coreos/go-systemd - vendor/github.com/DataDog/datadog-go vendor/github.com/davecgh/go-spew vendor/github.com/docker/docker vendor/github.com/docker/go-units vendor/github.com/dustin/go-humanize vendor/github.com/fsouza/go-dockerclient vendor/github.com/go-ini/ini - vendor/github.com/godbus/dbus - vendor/github.com/golang/protobuf vendor/github.com/gorhill/cronexpr vendor/github.com/go-ole/go-ole - vendor/github.com/hashicorp/consul + ~vendor/github.com/hashicorp/consul + vendor/github.com/hashicorp/consul/website vendor/github.com/hashicorp/errwrap vendor/github.com/hashicorp/go-checkpoint vendor/github.com/hashicorp/go-cleanhttp @@ -51,25 +47,24 @@ vendor/github.com/jmespath/go-jmespath vendor/github.com/kardianos/osext vendor/github.com/mattn/go-isatty - vendor/github.com/matttproud/golang_protobuf_extensions vendor/github.com/miekg/dns vendor/github.com/mitchellh/cli + vendor/github.com/mitchellh/colorstring vendor/github.com/mitchellh/copystructure + vendor/github.com/mitchellh/go-ps + vendor/github.com/NYTimes/gziphandler vendor/github.com/mitchellh/hashstructure vendor/github.com/mitchellh/mapstructure vendor/github.com/mitchellh/reflectwalk vendor/github.com/bgentry/speakeasy vendor/github.com/opencontainers/runc - vendor/github.com/prometheus/client_golang - vendor/github.com/prometheus/client_model - vendor/github.com/prometheus/common - vendor/github.com/prometheus/procfs vendor/github.com/ryanuber/columnize vendor/github.com/shirou/w32 vendor/github.com/shirou/gopsutil vendor/github.com/Sirupsen/logrus vendor/github.com/StackExchange/wmi vendor/github.com/ugorji/go + vendor/golang.org/x/net vendor/golang.org/x/sys Files: * diff -Nru nomad-0.3.2+dfsg/debian/nomad.init nomad-0.4.0+dfsg/debian/nomad.init --- nomad-0.3.2+dfsg/debian/nomad.init 2016-03-20 11:29:56.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/nomad.init 2016-07-16 13:48:22.000000000 +0000 @@ -69,11 +69,18 @@ ## return status 0 if process is running. status_of_proc -p $PIDFILE "$DAEMON" "$NAME" ;; + reload) + _ev_ log_action_begin_msg \"Reloading $NAME configuration\" +# killproc -p $PIDFILE "$DAEMON" SIGHUP +# start-stop-daemon --stop --signal HUP --pidfile "${PIDFILE}" --quiet + [ -r "${PIDFILE}" ] && R=$(pkill --signal HUP --parent $(cat "${PIDFILE}") --oldest $NAME 2>&1) + _ev_ log_action_end_msg $? \"$R\" + ;; restart|force-reload) $0 stop $0 start ;; *) - log_action_msg "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload|status}" + log_action_msg "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload|reload|status}" ;; esac diff -Nru nomad-0.3.2+dfsg/debian/nomad.service nomad-0.4.0+dfsg/debian/nomad.service --- nomad-0.3.2+dfsg/debian/nomad.service 2016-04-25 23:53:22.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/nomad.service 2016-07-03 16:27:31.000000000 +0000 @@ -7,6 +7,7 @@ Environment="DAEMON_ARGS=agent -config /etc/nomad" EnvironmentFile=-/etc/default/%p ExecStart=/usr/bin/nomad $DAEMON_ARGS +ExecReload=/bin/kill -HUP $MAINPID Restart=on-failure LimitNOFILE=65536 diff -Nru nomad-0.3.2+dfsg/debian/patches/series nomad-0.4.0+dfsg/debian/patches/series --- nomad-0.3.2+dfsg/debian/patches/series 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/patches/series 2016-07-16 22:57:33.000000000 +0000 @@ -0,0 +1,4 @@ +test--TestNetworkFingerprint.patch +test--TestPrettyPrint.patch +test--TestSyslogFilter.patch +test-exec-driver.patch diff -Nru nomad-0.3.2+dfsg/debian/patches/test-exec-driver.patch nomad-0.4.0+dfsg/debian/patches/test-exec-driver.patch --- nomad-0.3.2+dfsg/debian/patches/test-exec-driver.patch 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/patches/test-exec-driver.patch 2016-07-16 23:26:37.000000000 +0000 @@ -0,0 +1,33 @@ +Last-Update: 2016-07-17 +Forwarded: not-needed +Author: Dmitry Smirnov +Description: prevent test(s) failure. "exec" driver needs root + cgroups. +### FAIL: TestClient_Drivers (0.00s) +# client_test.go:228: missing exec driver +### FAIL: TestClient_Drivers_InWhitelist (0.00s) +# client_test.go:245: missing exec driver + +--- a/client/client_test.go ++++ b/client/client_test.go +@@ -224,9 +224,9 @@ + defer c.Shutdown() + + node := c.Node() + if node.Attributes["driver.exec"] == "" { +- t.Fatalf("missing exec driver") ++ t.Skip("DM-SKIP: missing exec driver") + } + } + + func TestClient_Drivers_InWhitelist(t *testing.T) { +@@ -241,9 +241,9 @@ + defer c.Shutdown() + + node := c.Node() + if node.Attributes["driver.exec"] == "" { +- t.Fatalf("missing exec driver") ++ t.Skip("DM-SKIP: missing exec driver") + } + } + + func TestClient_Drivers_OutOfWhitelist(t *testing.T) { diff -Nru nomad-0.3.2+dfsg/debian/patches/test--TestNetworkFingerprint.patch nomad-0.4.0+dfsg/debian/patches/test--TestNetworkFingerprint.patch --- nomad-0.3.2+dfsg/debian/patches/test--TestNetworkFingerprint.patch 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/patches/test--TestNetworkFingerprint.patch 2016-07-16 22:56:48.000000000 +0000 @@ -0,0 +1,19 @@ +Last-Update: 2016-07-17 +Forwarded: not-needed +Author: Dmitry Smirnov +Description: disable failing test(s). +### FAIL: TestNetworkFingerprint_basic (0.00s) +# network_test.go:152: should apply + +--- a/client/fingerprint/network_test.go ++++ b/client/fingerprint/network_test.go +@@ -137,8 +137,9 @@ + return nil, fmt.Errorf("Can't find addresses for device: %v", intf.Name) + } + + func TestNetworkFingerprint_basic(t *testing.T) { ++t.Skip("DM-disabled"); + f := &NetworkFingerprint{logger: testLogger(), interfaceDetector: &DefaultNetworkInterfaceDetector{}} + node := &structs.Node{ + Attributes: make(map[string]string), + } diff -Nru nomad-0.3.2+dfsg/debian/patches/test--TestPrettyPrint.patch nomad-0.4.0+dfsg/debian/patches/test--TestPrettyPrint.patch --- nomad-0.3.2+dfsg/debian/patches/test--TestPrettyPrint.patch 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/patches/test--TestPrettyPrint.patch 2016-07-16 22:51:22.000000000 +0000 @@ -0,0 +1,39 @@ +Last-Update: 2016-07-17 +Forwarded: not-needed +Author: Dmitry Smirnov +Description: disable failing test(s). +### FAIL: TestPrettyPrint (1.70s) +# http_test.go:235: bad: +# expected: "{\n \"Region\": \"\",\n \"ID\": \"\",\n \"ParentID\": \"\",\n \"Name\": \"foo\",\n \"Type\": \"\",\n \"Priority\": 0,\n \"AllAtOnce\": false,\n \"Datacenters\": null,\n \"Constraints\": null,\n \"TaskGroups\": null,\n \"Update\": {\n \"Stagger\": 0,\n \"MaxParallel\": 0\n },\n \"Periodic\": null,\n \"Meta\": null,\n \"Status\": \"\",\n \"StatusDescription\": \"\",\n \"CreateIndex\": 0,\n \"ModifyIndex\": 0,\n \"JobModifyIndex\": 0\n}\n" +# actual: "{\n \"AllAtOnce\": false,\n \"Constraints\": null,\n \"CreateIndex\": 0,\n \"Datacenters\": null,\n \"ID\": \"\",\n \"JobModifyIndex\": 0,\n \"Meta\": null,\n \"ModifyIndex\": 0,\n \"Name\": \"foo\",\n \"ParentID\": \"\",\n \"Periodic\": null,\n \"Priority\": 0,\n \"Region\": \"\",\n \"Status\": \"\",\n \"StatusDescription\": \"\",\n \"TaskGroups\": null,\n \"Type\": \"\",\n \"Update\": {\n \"MaxParallel\": 0,\n \"Stagger\": 0\n }\n}\n" +### FAIL: TestPrettyPrintOff (1.24s) +# http_test.go:235: bad: +# expected: "{\"Region\":\"\",\"ID\":\"\",\"ParentID\":\"\",\"Name\":\"foo\",\"Type\":\"\",\"Priority\":0,\"AllAtOnce\":false,\"Datacenters\":null,\"Constraints\":null,\"TaskGroups\":null,\"Update\":{\"Stagger\":0,\"MaxParallel\":0},\"Periodic\":null,\"Meta\":null,\"Status\":\"\",\"StatusDescription\":\"\",\"CreateIndex\":0,\"ModifyIndex\":0,\"JobModifyIndex\":0}" +# actual: "{\"AllAtOnce\":false,\"Constraints\":null,\"CreateIndex\":0,\"Datacenters\":null,\"ID\":\"\",\"JobModifyIndex\":0,\"Meta\":null,\"ModifyIndex\":0,\"Name\":\"foo\",\"ParentID\":\"\",\"Periodic\":null,\"Priority\":0,\"Region\":\"\",\"Status\":\"\",\"StatusDescription\":\"\",\"TaskGroups\":null,\"Type\":\"\",\"Update\":{\"MaxParallel\":0,\"Stagger\":0}}" +### FAIL: TestPrettyPrintBare (2.30s) +# http_test.go:235: bad: +# expected: "{\n \"Region\": \"\",\n \"ID\": \"\",\n \"ParentID\": \"\",\n \"Name\": \"foo\",\n \"Type\": \"\",\n \"Priority\": 0,\n \"AllAtOnce\": false,\n \"Datacenters\": null,\n \"Constraints\": null,\n \"TaskGroups\": null,\n \"Update\": {\n \"Stagger\": 0,\n \"MaxParallel\": 0\n },\n \"Periodic\": null,\n \"Meta\": null,\n \"Status\": \"\",\n \"StatusDescription\": \"\",\n \"CreateIndex\": 0,\n \"ModifyIndex\": 0,\n \"JobModifyIndex\": 0\n}\n" +# actual: "{\n \"AllAtOnce\": false,\n \"Constraints\": null,\n \"CreateIndex\": 0,\n \"Datacenters\": null,\n \"ID\": \"\",\n \"JobModifyIndex\": 0,\n \"Meta\": null,\n \"ModifyIndex\": 0,\n \"Name\": \"foo\",\n \"ParentID\": \"\",\n \"Periodic\": null,\n \"Priority\": 0,\n \"Region\": \"\",\n \"Status\": \"\",\n \"StatusDescription\": \"\",\n \"TaskGroups\": null,\n \"Type\": \"\",\n \"Update\": {\n \"MaxParallel\": 0,\n \"Stagger\": 0\n }\n}\n" + +--- a/command/agent/http_test.go ++++ b/command/agent/http_test.go +@@ -192,16 +192,19 @@ + } + } + + func TestPrettyPrint(t *testing.T) { ++t.Skip("DM-disabled"); + testPrettyPrint("pretty=1", true, t) + } + + func TestPrettyPrintOff(t *testing.T) { ++t.Skip("DM-disabled"); + testPrettyPrint("pretty=0", false, t) + } + + func TestPrettyPrintBare(t *testing.T) { ++t.Skip("DM-disabled"); + testPrettyPrint("pretty", true, t) + } + + func testPrettyPrint(pretty string, prettyFmt bool, t *testing.T) { diff -Nru nomad-0.3.2+dfsg/debian/patches/test--TestSyslogFilter.patch nomad-0.4.0+dfsg/debian/patches/test--TestSyslogFilter.patch --- nomad-0.3.2+dfsg/debian/patches/test--TestSyslogFilter.patch 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/patches/test--TestSyslogFilter.patch 2016-07-16 22:54:16.000000000 +0000 @@ -0,0 +1,19 @@ +Last-Update: 2016-07-17 +Forwarded: not-needed +Author: Dmitry Smirnov +Description: disable failing test(s). +### FAIL: TestSyslogFilter (0.00s) +# syslog_test.go:22: err: Unix syslog delivery error + +--- a/command/agent/syslog_test.go ++++ b/command/agent/syslog_test.go +@@ -9,8 +9,9 @@ + "github.com/hashicorp/logutils" + ) + + func TestSyslogFilter(t *testing.T) { ++t.Skip("DM-disabled"); + if runtime.GOOS == "windows" { + t.Skip("Syslog not supported on Windows") + } + if os.Getenv("TRAVIS") == "true" { diff -Nru nomad-0.3.2+dfsg/debian/rules nomad-0.4.0+dfsg/debian/rules --- nomad-0.3.2+dfsg/debian/rules 2016-06-16 10:12:31.000000000 +0000 +++ nomad-0.4.0+dfsg/debian/rules 2016-07-16 13:51:44.000000000 +0000 @@ -6,9 +6,15 @@ export GOMAXPROCS=1 export DEB_BUILD_MAINT_OPTIONS = hardening=+all export DH_GOLANG_EXCLUDES = demo +export DH_GOLANG_INSTALL_EXTRA = \ + client/getter/test-fixtures \ + client/driver/test-resources \ + command/agent/test-resources \ + command/agent/config-test-fixtures \ + jobspec/test-fixtures %: - dh $@ --buildsystem=golang --with=golang,systemd --builddirectory=_build + dh $@ --buildsystem=golang --with=golang,systemd --builddirectory=_build --parallel override_dh_clean: dh_clean diff -Nru nomad-0.3.2+dfsg/demo/vagrant/client1_consul_bootstrap.hcl nomad-0.4.0+dfsg/demo/vagrant/client1_consul_bootstrap.hcl --- nomad-0.3.2+dfsg/demo/vagrant/client1_consul_bootstrap.hcl 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/demo/vagrant/client1_consul_bootstrap.hcl 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,30 @@ +# Increase log verbosity +log_level = "DEBUG" + +# Setup data dir +data_dir = "/tmp/client1" + +enable_debug = true + +name = "client1" + +# Enable the client +client { + enabled = true + + # For demo assume we are talking to server1. For production, + # this should be like "nomad.service.consul:4647" and a system + # like Consul used for service discovery. + node_class = "foo" + options { + "driver.raw_exec.enable" = "1" + } + reserved { + cpu = 500 + } +} + +# Modify our port to avoid a collision with server1 +ports { + http = 5656 +} diff -Nru nomad-0.3.2+dfsg/demo/vagrant/client1.hcl nomad-0.4.0+dfsg/demo/vagrant/client1.hcl --- nomad-0.3.2+dfsg/demo/vagrant/client1.hcl 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/demo/vagrant/client1.hcl 2016-06-28 21:26:34.000000000 +0000 @@ -6,6 +6,8 @@ enable_debug = true +name = "client1" + # Enable the client client { enabled = true @@ -18,6 +20,9 @@ options { "driver.raw_exec.enable" = "1" } + reserved { + cpu = 500 + } } # Modify our port to avoid a collision with server1 diff -Nru nomad-0.3.2+dfsg/dist/systemd/nomad.service nomad-0.4.0+dfsg/dist/systemd/nomad.service --- nomad-0.3.2+dfsg/dist/systemd/nomad.service 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/dist/systemd/nomad.service 2016-06-28 21:26:34.000000000 +0000 @@ -4,6 +4,7 @@ [Service] ExecStart=/usr/bin/nomad agent -config /etc/nomad +ExecReload=/bin/kill -HUP $MAINPID LimitNOFILE=65536 [Install] diff -Nru nomad-0.3.2+dfsg/.gitignore nomad-0.4.0+dfsg/.gitignore --- nomad-0.3.2+dfsg/.gitignore 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/.gitignore 2016-06-28 21:26:34.000000000 +0000 @@ -2,6 +2,8 @@ *.o *.a *.so +*.log +/*.hcl .DS_Store Thumbs.db @@ -26,7 +28,7 @@ *.prof bin/ -pkg/ +/pkg/ .vagrant/ website/build/ website/npm-debug.log @@ -53,3 +55,4 @@ .terraform *.tfstate* +rkt-* diff -Nru nomad-0.3.2+dfsg/GNUmakefile nomad-0.4.0+dfsg/GNUmakefile --- nomad-0.3.2+dfsg/GNUmakefile 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/GNUmakefile 2016-06-28 21:26:34.000000000 +0000 @@ -2,10 +2,9 @@ VETARGS?=-asmdecl -atomic -bool -buildtags -copylocks -methods \ -nilfunc -printf -rangeloops -shift -structtags -unsafeptr EXTERNAL_TOOLS=\ - github.com/tools/godep \ + github.com/kardianos/govendor \ github.com/mitchellh/gox \ golang.org/x/tools/cmd/cover \ - golang.org/x/tools/cmd/vet \ github.com/axw/gocov/gocov \ gopkg.in/matm/v1/gocov-html \ github.com/ugorji/go/codec/codecgen @@ -72,6 +71,9 @@ go get $$tool; \ done +install: bin/nomad + install -o root -g wheel -m 0755 ./bin/nomad /usr/local/bin/nomad + travis: @sudo apt-get install -y qemu @sh -c "'$(PWD)/scripts/update_docker.sh'" diff -Nru nomad-0.3.2+dfsg/Godeps/Godeps.json nomad-0.4.0+dfsg/Godeps/Godeps.json --- nomad-0.3.2+dfsg/Godeps/Godeps.json 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/Godeps/Godeps.json 1970-01-01 00:00:00.000000000 +0000 @@ -1,608 +0,0 @@ -{ - "ImportPath": "github.com/hashicorp/nomad", - "GoVersion": "go1.6", - "GodepVersion": "v62", - "Packages": [ - "./..." - ], - "Deps": [ - { - "ImportPath": "github.com/DataDog/datadog-go/statsd", - "Rev": "bc97e0770ad4edae1c9dc14beb40b79b2dde32f8" - }, - { - "ImportPath": "github.com/Sirupsen/logrus", - 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}, - { - "ImportPath": "github.com/prometheus/common/model", - "Rev": "23070236b1ebff452f494ae831569545c2b61d26" - }, - { - "ImportPath": "github.com/prometheus/procfs", - "Rev": "406e5b7bfd8201a36e2bb5f7bdae0b03380c2ce8" - }, - { - "ImportPath": "github.com/ryanuber/columnize", - "Comment": "v2.0.1-8-g983d3a5", - "Rev": "983d3a5fab1bf04d1b412465d2d9f8430e2e917e" - }, - { - "ImportPath": "github.com/shirou/gopsutil/cpu", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/gopsutil/host", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/gopsutil/internal/common", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/gopsutil/mem", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/gopsutil/net", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/gopsutil/process", - "Comment": "1.0.0-230-gf58654f", - "Rev": "f58654fa1c30aab9b8c503ecea4922e80abcd2bf" - }, - { - "ImportPath": "github.com/shirou/w32", - "Rev": "ada3ba68f000aa1b58580e45c9d308fe0b7fc5c5" - }, - { - "ImportPath": "github.com/ugorji/go/codec", - "Rev": "03b46f3d7a8e0457836a5ecd906b4961a5815a63" - }, - { - "ImportPath": "github.com/ugorji/go/codec/codecgen", - "Rev": "03b46f3d7a8e0457836a5ecd906b4961a5815a63" - }, - { - "ImportPath": "golang.org/x/sys/unix", - "Rev": "50c6bc5e4292a1d4e65c6e9be5f53be28bcbe28e" - } - ] -} diff -Nru nomad-0.3.2+dfsg/Godeps/Readme nomad-0.4.0+dfsg/Godeps/Readme --- nomad-0.3.2+dfsg/Godeps/Readme 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/Godeps/Readme 1970-01-01 00:00:00.000000000 +0000 @@ -1,5 +0,0 @@ -This directory tree is generated automatically by godep. - -Please do not edit. - -See https://github.com/tools/godep for more information. diff -Nru nomad-0.3.2+dfsg/helper/args/args.go nomad-0.4.0+dfsg/helper/args/args.go --- nomad-0.3.2+dfsg/helper/args/args.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/helper/args/args.go 2016-06-28 21:26:34.000000000 +0000 @@ -6,7 +6,7 @@ envRe = regexp.MustCompile(`\${[a-zA-Z0-9_\-\.]+}`) ) -// ReplaceEnv takes an arg and replaces all occurences of environment variables. +// ReplaceEnv takes an arg and replaces all occurrences of environment variables. // If the variable is found in the passed map it is replaced, otherwise the // original string is returned. func ReplaceEnv(arg string, environments ...map[string]string) string { diff -Nru nomad-0.3.2+dfsg/helper/flatmap/flatmap.go nomad-0.4.0+dfsg/helper/flatmap/flatmap.go --- nomad-0.3.2+dfsg/helper/flatmap/flatmap.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/helper/flatmap/flatmap.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,135 @@ +package flatmap + +import ( + "fmt" + "reflect" +) + +// Flatten takes an object and returns a flat map of the object. The keys of the +// map is the path of the field names until a primitive field is reached and the +// value is a string representation of the terminal field. +func Flatten(obj interface{}, filter []string, primitiveOnly bool) map[string]string { + flat := make(map[string]string) + v := reflect.ValueOf(obj) + if !v.IsValid() { + return nil + } + + flatten("", v, primitiveOnly, false, flat) + for _, f := range filter { + if _, ok := flat[f]; ok { + delete(flat, f) + } + } + return flat +} + +// flatten recursively calls itself to create a flatmap representation of the +// passed value. The results are stored into the output map and the keys are +// the fields prepended with the passed prefix. +// XXX: A current restriction is that maps only support string keys. +func flatten(prefix string, v reflect.Value, primitiveOnly, enteredStruct bool, output map[string]string) { + switch v.Kind() { + case reflect.Bool: + output[prefix] = fmt.Sprintf("%v", v.Bool()) + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + output[prefix] = fmt.Sprintf("%v", v.Int()) + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + output[prefix] = fmt.Sprintf("%v", v.Uint()) + case reflect.Float32, reflect.Float64: + output[prefix] = fmt.Sprintf("%v", v.Float()) + case reflect.Complex64, reflect.Complex128: + output[prefix] = fmt.Sprintf("%v", v.Complex()) + case reflect.String: + output[prefix] = fmt.Sprintf("%v", v.String()) + case reflect.Invalid: + output[prefix] = "nil" + case reflect.Ptr: + if primitiveOnly && enteredStruct { + return + } + + e := v.Elem() + if !e.IsValid() { + output[prefix] = "nil" + } + flatten(prefix, e, primitiveOnly, enteredStruct, output) + case reflect.Map: + for _, k := range v.MapKeys() { + if k.Kind() == reflect.Interface { + k = k.Elem() + } + + if k.Kind() != reflect.String { + panic(fmt.Sprintf("%q: map key is not string: %s", prefix, k)) + } + + flatten(getSubKeyPrefix(prefix, k.String()), v.MapIndex(k), primitiveOnly, enteredStruct, output) + } + case reflect.Struct: + if primitiveOnly && enteredStruct { + return + } + enteredStruct = true + + t := v.Type() + for i := 0; i < v.NumField(); i++ { + name := t.Field(i).Name + val := v.Field(i) + if val.Kind() == reflect.Interface && !val.IsNil() { + val = val.Elem() + } + + flatten(getSubPrefix(prefix, name), val, primitiveOnly, enteredStruct, output) + } + case reflect.Interface: + if primitiveOnly { + return + } + + e := v.Elem() + if !e.IsValid() { + output[prefix] = "nil" + return + } + flatten(prefix, e, primitiveOnly, enteredStruct, output) + case reflect.Array, reflect.Slice: + if primitiveOnly { + return + } + + if v.Kind() == reflect.Slice && v.IsNil() { + output[prefix] = "nil" + return + } + for i := 0; i < v.Len(); i++ { + flatten(fmt.Sprintf("%s[%d]", prefix, i), v.Index(i), primitiveOnly, enteredStruct, output) + } + default: + panic(fmt.Sprintf("prefix %q; unsupported type %v", prefix, v.Kind())) + } +} + +// getSubPrefix takes the current prefix and the next subfield and returns an +// appropriate prefix. +func getSubPrefix(curPrefix, subField string) string { + newPrefix := "" + if curPrefix != "" { + newPrefix = fmt.Sprintf("%s.%s", curPrefix, subField) + } else { + newPrefix = fmt.Sprintf("%s", subField) + } + return newPrefix +} + +// getSubKeyPrefix takes the current prefix and the next subfield and returns an +// appropriate prefix for a map field. +func getSubKeyPrefix(curPrefix, subField string) string { + newPrefix := "" + if curPrefix != "" { + newPrefix = fmt.Sprintf("%s[%s]", curPrefix, subField) + } else { + newPrefix = fmt.Sprintf("%s", subField) + } + return newPrefix +} diff -Nru nomad-0.3.2+dfsg/helper/flatmap/flatmap_test.go nomad-0.4.0+dfsg/helper/flatmap/flatmap_test.go --- nomad-0.3.2+dfsg/helper/flatmap/flatmap_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/helper/flatmap/flatmap_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,232 @@ +package flatmap + +import ( + "reflect" + "testing" +) + +type simpleTypes struct { + b bool + i int + i8 int8 + i16 int16 + i32 int32 + i64 int64 + ui uint + ui8 uint8 + ui16 uint16 + ui32 uint32 + ui64 uint64 + f32 float32 + f64 float64 + c64 complex64 + c128 complex128 + s string +} + +type linkedList struct { + value string + next *linkedList +} + +type containers struct { + myslice []int + mymap map[string]linkedList +} + +type interfaceHolder struct { + value interface{} +} + +func TestFlatMap(t *testing.T) { + cases := []struct { + Input interface{} + Expected map[string]string + Filter []string + PrimitiveOnly bool + }{ + { + Input: nil, + Expected: nil, + }, + { + Input: &simpleTypes{ + b: true, + i: -10, + i8: 88, + i16: 1616, + i32: 3232, + i64: 6464, + ui: 10, + ui8: 88, + ui16: 1616, + ui32: 3232, + ui64: 6464, + f32: 3232, + f64: 6464, + c64: 64, + c128: 128, + s: "foobar", + }, + Expected: map[string]string{ + "b": "true", + "i": "-10", + "i8": "88", + "i16": "1616", + "i32": "3232", + "i64": "6464", + "ui": "10", + "ui8": "88", + "ui16": "1616", + "ui32": "3232", + "ui64": "6464", + "f32": "3232", + "f64": "6464", + "c64": "(64+0i)", + "c128": "(128+0i)", + "s": "foobar", + }, + }, + { + Input: &simpleTypes{ + b: true, + i: -10, + i8: 88, + i16: 1616, + i32: 3232, + i64: 6464, + ui: 10, + ui8: 88, + ui16: 1616, + ui32: 3232, + ui64: 6464, + f32: 3232, + f64: 6464, + c64: 64, + c128: 128, + s: "foobar", + }, + Filter: []string{"i", "i8", "i16"}, + Expected: map[string]string{ + "b": "true", + "i32": "3232", + "i64": "6464", + "ui": "10", + "ui8": "88", + "ui16": "1616", + "ui32": "3232", + "ui64": "6464", + "f32": "3232", + "f64": "6464", + "c64": "(64+0i)", + "c128": "(128+0i)", + "s": "foobar", + }, + }, + { + Input: &linkedList{ + value: "foo", + next: &linkedList{ + value: "bar", + next: nil, + }, + }, + Expected: map[string]string{ + "value": "foo", + "next.value": "bar", + "next.next": "nil", + }, + }, + { + Input: &linkedList{ + value: "foo", + next: &linkedList{ + value: "bar", + next: nil, + }, + }, + PrimitiveOnly: true, + Expected: map[string]string{ + "value": "foo", + }, + }, + { + Input: linkedList{ + value: "foo", + next: &linkedList{ + value: "bar", + next: nil, + }, + }, + PrimitiveOnly: true, + Expected: map[string]string{ + "value": "foo", + }, + }, + { + Input: &containers{ + myslice: []int{1, 2}, + mymap: map[string]linkedList{ + "foo": linkedList{ + value: "l1", + }, + "bar": linkedList{ + value: "l2", + }, + }, + }, + Expected: map[string]string{ + "myslice[0]": "1", + "myslice[1]": "2", + "mymap[foo].value": "l1", + "mymap[foo].next": "nil", + "mymap[bar].value": "l2", + "mymap[bar].next": "nil", + }, + }, + { + Input: &containers{ + myslice: []int{1, 2}, + mymap: map[string]linkedList{ + "foo": linkedList{ + value: "l1", + }, + "bar": linkedList{ + value: "l2", + }, + }, + }, + PrimitiveOnly: true, + Expected: map[string]string{}, + }, + { + Input: &interfaceHolder{ + value: &linkedList{ + value: "foo", + next: nil, + }, + }, + Expected: map[string]string{ + "value.value": "foo", + "value.next": "nil", + }, + }, + { + Input: &interfaceHolder{ + value: &linkedList{ + value: "foo", + next: nil, + }, + }, + PrimitiveOnly: true, + Expected: map[string]string{}, + }, + } + + for i, c := range cases { + act := Flatten(c.Input, c.Filter, c.PrimitiveOnly) + if !reflect.DeepEqual(act, c.Expected) { + t.Fatalf("case %d: got %#v; want %#v", i+1, act, c.Expected) + } + } +} diff -Nru nomad-0.3.2+dfsg/helper/stats/cpu.go nomad-0.4.0+dfsg/helper/stats/cpu.go --- nomad-0.3.2+dfsg/helper/stats/cpu.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/helper/stats/cpu.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,67 @@ +package stats + +import ( + "fmt" + "math" + "sync" + + "github.com/shirou/gopsutil/cpu" +) + +var ( + cpuMhzPerCore float64 + cpuModelName string + cpuNumCores int + cpuTotalTicks float64 + + onceLer sync.Once +) + +func Init() error { + var err error + onceLer.Do(func() { + if cpuNumCores, err = cpu.Counts(true); err != nil { + err = fmt.Errorf("Unable to determine the number of CPU cores available: %v", err) + return + } + + var cpuInfo []cpu.InfoStat + if cpuInfo, err = cpu.Info(); err != nil { + err = fmt.Errorf("Unable to obtain CPU information: %v", err) + return + } + + for _, cpu := range cpuInfo { + cpuModelName = cpu.ModelName + cpuMhzPerCore = cpu.Mhz + break + } + + // Floor all of the values such that small difference don't cause the + // node to fall into a unique computed node class + cpuMhzPerCore = math.Floor(cpuMhzPerCore) + cpuTotalTicks = math.Floor(float64(cpuNumCores) * cpuMhzPerCore) + }) + return err +} + +// CPUModelName returns the number of CPU cores available +func CPUNumCores() int { + return cpuNumCores +} + +// CPUMHzPerCore returns the MHz per CPU core +func CPUMHzPerCore() float64 { + return cpuMhzPerCore +} + +// CPUModelName returns the model name of the CPU +func CPUModelName() string { + return cpuModelName +} + +// TotalTicksAvailable calculates the total frequency available across all +// cores +func TotalTicksAvailable() float64 { + return cpuTotalTicks +} diff -Nru nomad-0.3.2+dfsg/jobspec/parse.go nomad-0.4.0+dfsg/jobspec/parse.go --- nomad-0.3.2+dfsg/jobspec/parse.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/jobspec/parse.go 2016-06-28 21:26:34.000000000 +0000 @@ -665,14 +665,14 @@ return fmt.Errorf("artifact should be an object") } - options := make(map[string]string) if oo := optionList.Filter("options"); len(oo.Items) > 0 { + options := make(map[string]string) if err := parseArtifactOption(options, oo); err != nil { return multierror.Prefix(err, "options: ") } + ta.GetterOptions = options } - ta.GetterOptions = options *result = append(*result, &ta) } diff -Nru nomad-0.3.2+dfsg/jobspec/parse_test.go nomad-0.4.0+dfsg/jobspec/parse_test.go --- nomad-0.3.2+dfsg/jobspec/parse_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/jobspec/parse_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -91,6 +91,11 @@ User: "bob", Config: map[string]interface{}{ "image": "hashicorp/binstore", + "labels": []map[string]interface{}{ + map[string]interface{}{ + "FOO": "bar", + }, + }, }, Services: []*structs.Service{ { @@ -357,17 +362,17 @@ Artifacts: []*structs.TaskArtifact{ { GetterSource: "http://foo.com/bar", - GetterOptions: map[string]string{}, + GetterOptions: map[string]string{"foo": "bar"}, RelativeDest: "", }, { GetterSource: "http://foo.com/baz", - GetterOptions: map[string]string{}, + GetterOptions: nil, RelativeDest: "local/", }, { GetterSource: "http://foo.com/bam", - GetterOptions: map[string]string{}, + GetterOptions: nil, RelativeDest: "var/foo", }, }, diff -Nru nomad-0.3.2+dfsg/jobspec/test-fixtures/artifacts.hcl nomad-0.4.0+dfsg/jobspec/test-fixtures/artifacts.hcl --- nomad-0.3.2+dfsg/jobspec/test-fixtures/artifacts.hcl 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/jobspec/test-fixtures/artifacts.hcl 2016-06-28 21:26:34.000000000 +0000 @@ -6,6 +6,9 @@ artifact { source = "http://foo.com/bar" destination = "" + options { + foo = "bar" + } } artifact { diff -Nru nomad-0.3.2+dfsg/jobspec/test-fixtures/basic.hcl nomad-0.4.0+dfsg/jobspec/test-fixtures/basic.hcl --- nomad-0.3.2+dfsg/jobspec/test-fixtures/basic.hcl 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/jobspec/test-fixtures/basic.hcl 2016-06-28 21:26:34.000000000 +0000 @@ -47,6 +47,10 @@ config { image = "hashicorp/binstore" + + labels { + FOO = "bar" + } } logs { diff -Nru nomad-0.3.2+dfsg/main.go nomad-0.4.0+dfsg/main.go --- nomad-0.3.2+dfsg/main.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/main.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,9 +4,14 @@ "fmt" "os" + "github.com/hashicorp/consul/lib" "github.com/mitchellh/cli" ) +func init() { + lib.SeedMathRand() +} + func main() { os.Exit(Run(os.Args[1:])) } @@ -35,6 +40,7 @@ case "executor": case "syslog": case "fs ls", "fs cat", "fs stat": + case "check": default: commandsInclude = append(commandsInclude, k) } diff -Nru nomad-0.3.2+dfsg/nomad/blocked_evals.go nomad-0.4.0+dfsg/nomad/blocked_evals.go --- nomad-0.3.2+dfsg/nomad/blocked_evals.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/blocked_evals.go 2016-06-28 21:26:34.000000000 +0000 @@ -5,6 +5,7 @@ "time" "github.com/armon/go-metrics" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/nomad/nomad/structs" ) @@ -28,22 +29,28 @@ // captured is the set of evaluations that are captured by computed node // classes. - captured map[string]*structs.Evaluation + captured map[string]wrappedEval // escaped is the set of evaluations that have escaped computed node // classes. - escaped map[string]*structs.Evaluation + escaped map[string]wrappedEval // unblockCh is used to buffer unblocking of evaluations. - capacityChangeCh chan string + capacityChangeCh chan *capacityUpdate // jobs is the map of blocked job and is used to ensure that only one // blocked eval exists for each job. jobs map[string]struct{} + // unblockIndexes maps computed node classes to the index in which they were + // unblocked. This is used to check if an evaluation could have been + // unblocked between the time they were in the scheduler and the time they + // are being blocked. + unblockIndexes map[string]uint64 + // duplicates is the set of evaluations for jobs that had pre-existing // blocked evaluations. These should be marked as cancelled since only one - // blocked eval is neeeded bper job. + // blocked eval is neeeded per job. duplicates []*structs.Evaluation // duplicateCh is used to signal that a duplicate eval was added to the @@ -55,6 +62,18 @@ stopCh chan struct{} } +// capacityUpdate stores unblock data. +type capacityUpdate struct { + computedClass string + index uint64 +} + +// wrappedEval captures both the evaluation and the optional token +type wrappedEval struct { + eval *structs.Evaluation + token string +} + // BlockedStats returns all the stats about the blocked eval tracker. type BlockedStats struct { // TotalEscaped is the total number of blocked evaluations that have escaped @@ -70,10 +89,11 @@ func NewBlockedEvals(evalBroker *EvalBroker) *BlockedEvals { return &BlockedEvals{ evalBroker: evalBroker, - captured: make(map[string]*structs.Evaluation), - escaped: make(map[string]*structs.Evaluation), + captured: make(map[string]wrappedEval), + escaped: make(map[string]wrappedEval), jobs: make(map[string]struct{}), - capacityChangeCh: make(chan string, unblockBuffer), + unblockIndexes: make(map[string]uint64), + capacityChangeCh: make(chan *capacityUpdate, unblockBuffer), duplicateCh: make(chan struct{}, 1), stopCh: make(chan struct{}), stats: new(BlockedStats), @@ -87,12 +107,13 @@ return b.enabled } -// SetEnabled is used to control if the broker is enabled. The broker -// should only be enabled on the active leader. +// SetEnabled is used to control if the blocked eval tracker is enabled. The +// tracker should only be enabled on the active leader. func (b *BlockedEvals) SetEnabled(enabled bool) { b.l.Lock() if b.enabled == enabled { // No-op + b.l.Unlock() return } else if enabled { go b.watchCapacity() @@ -109,6 +130,21 @@ // Block tracks the passed evaluation and enqueues it into the eval broker when // a suitable node calls unblock. func (b *BlockedEvals) Block(eval *structs.Evaluation) { + b.processBlock(eval, "") +} + +// Reblock tracks the passed evaluation and enqueues it into the eval broker when +// a suitable node calls unblock. Reblock should be used over Block when the +// blocking is occurring by an outstanding evaluation. The token is the +// evaluation's token. +func (b *BlockedEvals) Reblock(eval *structs.Evaluation, token string) { + b.processBlock(eval, token) +} + +// processBlock is the implementation of blocking an evaluation. It supports +// taking an optional evaluation token to use when reblocking an evaluation that +// may be outstanding. +func (b *BlockedEvals) processBlock(eval *structs.Evaluation, token string) { b.l.Lock() defer b.l.Unlock() @@ -133,35 +169,103 @@ return } + // Check if the eval missed an unblock while it was in the scheduler at an + // older index. The scheduler could have been invoked with a snapshot of + // state that was prior to additional capacity being added or allocations + // becoming terminal. + if b.missedUnblock(eval) { + // Just re-enqueue the eval immediately. We pass the token so that the + // eval_broker can properly handle the case in which the evaluation is + // still outstanding. + b.evalBroker.EnqueueAll(map[*structs.Evaluation]string{eval: token}) + return + } + // Mark the job as tracked. b.stats.TotalBlocked++ b.jobs[eval.JobID] = struct{}{} + // Wrap the evaluation, capturing its token. + wrapped := wrappedEval{ + eval: eval, + token: token, + } + // If the eval has escaped, meaning computed node classes could not capture // the constraints of the job, we store the eval separately as we have to // unblock it whenever node capacity changes. This is because we don't know // what node class is feasible for the jobs constraints. if eval.EscapedComputedClass { - b.escaped[eval.ID] = eval + b.escaped[eval.ID] = wrapped b.stats.TotalEscaped++ return } // Add the eval to the set of blocked evals whose jobs constraints are // captured by computed node class. - b.captured[eval.ID] = eval + b.captured[eval.ID] = wrapped +} + +// missedUnblock returns whether an evaluation missed an unblock while it was in +// the scheduler. Since the scheduler can operate at an index in the past, the +// evaluation may have been processed missing data that would allow it to +// complete. This method returns if that is the case and should be called with +// the lock held. +func (b *BlockedEvals) missedUnblock(eval *structs.Evaluation) bool { + var max uint64 = 0 + for class, index := range b.unblockIndexes { + // Calculate the max unblock index + if max < index { + max = index + } + + elig, ok := eval.ClassEligibility[class] + if !ok && eval.SnapshotIndex < index { + // The evaluation was processed and did not encounter this class + // because it was added after it was processed. Thus for correctness + // we need to unblock it. + return true + } + + // The evaluation could use the computed node class and the eval was + // processed before the last unblock. + if elig && eval.SnapshotIndex < index { + return true + } + } + + // If the evaluation has escaped, and the map contains an index older than + // the evaluations, it should be unblocked. + if eval.EscapedComputedClass && eval.SnapshotIndex < max { + return true + } + + // The evaluation is ahead of all recent unblocks. + return false } // Unblock causes any evaluation that could potentially make progress on a // capacity change on the passed computed node class to be enqueued into the // eval broker. -func (b *BlockedEvals) Unblock(computedClass string) { +func (b *BlockedEvals) Unblock(computedClass string, index uint64) { + b.l.Lock() + // Do nothing if not enabled if !b.enabled { + b.l.Unlock() return } - b.capacityChangeCh <- computedClass + // Store the index in which the unblock happened. We use this on subsequent + // block calls in case the evaluation was in the scheduler when a trigger + // occurred. + b.unblockIndexes[computedClass] = index + b.l.Unlock() + + b.capacityChangeCh <- &capacityUpdate{ + computedClass: computedClass, + index: index, + } } // watchCapacity is a long lived function that watches for capacity changes in @@ -171,15 +275,15 @@ select { case <-b.stopCh: return - case computedClass := <-b.capacityChangeCh: - b.unblock(computedClass) + case update := <-b.capacityChangeCh: + b.unblock(update.computedClass, update.index) } } } // unblock unblocks all blocked evals that could run on the passed computed node // class. -func (b *BlockedEvals) unblock(computedClass string) { +func (b *BlockedEvals) unblock(computedClass string, index uint64) { b.l.Lock() defer b.l.Unlock() @@ -190,32 +294,32 @@ // Every eval that has escaped computed node class has to be unblocked // because any node could potentially be feasible. - var unblocked []*structs.Evaluation - if l := len(b.escaped); l != 0 { - unblocked = make([]*structs.Evaluation, 0, l) - for id, eval := range b.escaped { - unblocked = append(unblocked, eval) + numEscaped := len(b.escaped) + unblocked := make(map[*structs.Evaluation]string, lib.MaxInt(numEscaped, 4)) + if numEscaped != 0 { + for id, wrapped := range b.escaped { + unblocked[wrapped.eval] = wrapped.token delete(b.escaped, id) - delete(b.jobs, eval.JobID) + delete(b.jobs, wrapped.eval.JobID) } } - // We unblock any eval that is explicitely eligible for the computed class + // We unblock any eval that is explicitly eligible for the computed class // and also any eval that is not eligible or uneligible. This signifies that // when the evaluation was originally run through the scheduler, that it // never saw a node with the given computed class and thus needs to be // unblocked for correctness. - for id, eval := range b.captured { - if elig, ok := eval.ClassEligibility[computedClass]; ok && !elig { - // Can skip because the eval has explicitely marked the node class + for id, wrapped := range b.captured { + if elig, ok := wrapped.eval.ClassEligibility[computedClass]; ok && !elig { + // Can skip because the eval has explicitly marked the node class // as ineligible. continue } // The computed node class has never been seen by the eval so we unblock // it. - unblocked = append(unblocked, eval) - delete(b.jobs, eval.JobID) + unblocked[wrapped.eval] = wrapped.token + delete(b.jobs, wrapped.eval.JobID) delete(b.captured, id) } @@ -229,6 +333,41 @@ } } +// UnblockFailed unblocks all blocked evaluation that were due to scheduler +// failure. +func (b *BlockedEvals) UnblockFailed() { + b.l.Lock() + defer b.l.Unlock() + + // Do nothing if not enabled + if !b.enabled { + return + } + + unblocked := make(map[*structs.Evaluation]string, 4) + for id, wrapped := range b.captured { + if wrapped.eval.TriggeredBy == structs.EvalTriggerMaxPlans { + unblocked[wrapped.eval] = wrapped.token + delete(b.captured, id) + delete(b.jobs, wrapped.eval.JobID) + } + } + + for id, wrapped := range b.escaped { + if wrapped.eval.TriggeredBy == structs.EvalTriggerMaxPlans { + unblocked[wrapped.eval] = wrapped.token + delete(b.escaped, id) + delete(b.jobs, wrapped.eval.JobID) + b.stats.TotalEscaped -= 1 + } + } + + if l := len(unblocked); l > 0 { + b.stats.TotalBlocked -= l + b.evalBroker.EnqueueAll(unblocked) + } +} + // GetDuplicates returns all the duplicate evaluations and blocks until the // passed timeout. func (b *BlockedEvals) GetDuplicates(timeout time.Duration) []*structs.Evaluation { @@ -269,11 +408,11 @@ // Reset the blocked eval tracker. b.stats.TotalEscaped = 0 b.stats.TotalBlocked = 0 - b.captured = make(map[string]*structs.Evaluation) - b.escaped = make(map[string]*structs.Evaluation) + b.captured = make(map[string]wrappedEval) + b.escaped = make(map[string]wrappedEval) b.jobs = make(map[string]struct{}) b.duplicates = nil - b.capacityChangeCh = make(chan string, unblockBuffer) + b.capacityChangeCh = make(chan *capacityUpdate, unblockBuffer) b.stopCh = make(chan struct{}) b.duplicateCh = make(chan struct{}, 1) } diff -Nru nomad-0.3.2+dfsg/nomad/blocked_evals_test.go nomad-0.4.0+dfsg/nomad/blocked_evals_test.go --- nomad-0.3.2+dfsg/nomad/blocked_evals_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/blocked_evals_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -53,6 +53,27 @@ } } +func TestBlockedEvals_Block_PriorUnblocks(t *testing.T) { + blocked, _ := testBlockedEvals(t) + + // Do unblocks prior to blocking + blocked.Unblock("v1:123", 1000) + blocked.Unblock("v1:123", 1001) + + // Create two blocked evals and add them to the blocked tracker. + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.ClassEligibility = map[string]bool{"v1:123": false, "v1:456": false} + e.SnapshotIndex = 999 + blocked.Block(e) + + // Verify block did track both + bStats := blocked.Stats() + if bStats.TotalBlocked != 1 || bStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", bStats) + } +} + func TestBlockedEvals_GetDuplicates(t *testing.T) { blocked, _ := testBlockedEvals(t) @@ -105,7 +126,7 @@ t.Fatalf("bad: %#v", bStats) } - blocked.Unblock("v1:123") + blocked.Unblock("v1:123", 1000) testutil.WaitForResult(func() (bool, error) { // Verify Unblock caused an enqueue @@ -141,7 +162,7 @@ t.Fatalf("bad: %#v", blockedStats) } - blocked.Unblock("v1:123") + blocked.Unblock("v1:123", 1000) testutil.WaitForResult(func() (bool, error) { // Verify Unblock caused an enqueue @@ -178,7 +199,7 @@ } // Should do nothing - blocked.Unblock("v1:123") + blocked.Unblock("v1:123", 1000) testutil.WaitForResult(func() (bool, error) { // Verify Unblock didn't cause an enqueue @@ -214,7 +235,7 @@ } // Should unblock because the eval hasn't seen this node class. - blocked.Unblock("v1:789") + blocked.Unblock("v1:789", 1000) testutil.WaitForResult(func() (bool, error) { // Verify Unblock causes an enqueue @@ -233,3 +254,233 @@ t.Fatalf("err: %s", err) }) } + +func TestBlockedEvals_Reblock(t *testing.T) { + blocked, broker := testBlockedEvals(t) + + // Create an evaluation, Enqueue/Dequeue it to get a token + e := mock.Eval() + e.SnapshotIndex = 500 + e.Status = structs.EvalStatusBlocked + e.ClassEligibility = map[string]bool{"v1:123": true, "v1:456": false} + broker.Enqueue(e) + + _, token, err := broker.Dequeue([]string{e.Type}, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Reblock the evaluation + blocked.Reblock(e, token) + + // Verify block caused the eval to be tracked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 1 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } + + // Should unblock because the eval + blocked.Unblock("v1:123", 1000) + + brokerStats := broker.Stats() + if brokerStats.TotalReady != 0 && brokerStats.TotalUnacked != 1 { + t.Fatalf("bad: %#v", brokerStats) + } + + // Ack the evaluation which should cause the reblocked eval to transistion + // to ready + if err := broker.Ack(e.ID, token); err != nil { + t.Fatalf("err: %v", err) + } + + testutil.WaitForResult(func() (bool, error) { + // Verify Unblock causes an enqueue + brokerStats := broker.Stats() + if brokerStats.TotalReady != 1 { + return false, fmt.Errorf("bad: %#v", brokerStats) + } + + // Verify Unblock updates the stats + bStats := blocked.Stats() + if bStats.TotalBlocked != 0 || bStats.TotalEscaped != 0 { + return false, fmt.Errorf("bad: %#v", bStats) + } + return true, nil + }, func(err error) { + t.Fatalf("err: %s", err) + }) +} + +// Test the block case in which the eval should be immediately unblocked since +// it is escaped and old +func TestBlockedEvals_Block_ImmediateUnblock_Escaped(t *testing.T) { + blocked, broker := testBlockedEvals(t) + + // Do an unblock prior to blocking + blocked.Unblock("v1:123", 1000) + + // Create a blocked eval that is eligible on a specific node class and add + // it to the blocked tracker. + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.EscapedComputedClass = true + e.SnapshotIndex = 900 + blocked.Block(e) + + // Verify block caused the eval to be immediately unblocked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 0 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } + + testutil.WaitForResult(func() (bool, error) { + // Verify Unblock caused an enqueue + brokerStats := broker.Stats() + if brokerStats.TotalReady != 1 { + return false, fmt.Errorf("bad: %#v", brokerStats) + } + + return true, nil + }, func(err error) { + t.Fatalf("err: %s", err) + }) +} + +// Test the block case in which the eval should be immediately unblocked since +// there is an unblock on an unseen class that occurred while it was in the +// scheduler +func TestBlockedEvals_Block_ImmediateUnblock_UnseenClass_After(t *testing.T) { + blocked, broker := testBlockedEvals(t) + + // Do an unblock prior to blocking + blocked.Unblock("v1:123", 1000) + + // Create a blocked eval that is eligible on a specific node class and add + // it to the blocked tracker. + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.EscapedComputedClass = false + e.SnapshotIndex = 900 + blocked.Block(e) + + // Verify block caused the eval to be immediately unblocked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 0 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } + + testutil.WaitForResult(func() (bool, error) { + // Verify Unblock caused an enqueue + brokerStats := broker.Stats() + if brokerStats.TotalReady != 1 { + return false, fmt.Errorf("bad: %#v", brokerStats) + } + + return true, nil + }, func(err error) { + t.Fatalf("err: %s", err) + }) +} + +// Test the block case in which the eval should not immediately unblock since +// there is an unblock on an unseen class that occurred before it was in the +// scheduler +func TestBlockedEvals_Block_ImmediateUnblock_UnseenClass_Before(t *testing.T) { + blocked, _ := testBlockedEvals(t) + + // Do an unblock prior to blocking + blocked.Unblock("v1:123", 500) + + // Create a blocked eval that is eligible on a specific node class and add + // it to the blocked tracker. + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.EscapedComputedClass = false + e.SnapshotIndex = 900 + blocked.Block(e) + + // Verify block caused the eval to be immediately unblocked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 1 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } +} + +// Test the block case in which the eval should be immediately unblocked since +// it a class it is eligible for has been unblocked +func TestBlockedEvals_Block_ImmediateUnblock_SeenClass(t *testing.T) { + blocked, broker := testBlockedEvals(t) + + // Do an unblock prior to blocking + blocked.Unblock("v1:123", 1000) + + // Create a blocked eval that is eligible on a specific node class and add + // it to the blocked tracker. + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.ClassEligibility = map[string]bool{"v1:123": true, "v1:456": false} + e.SnapshotIndex = 900 + blocked.Block(e) + + // Verify block caused the eval to be immediately unblocked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 0 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } + + testutil.WaitForResult(func() (bool, error) { + // Verify Unblock caused an enqueue + brokerStats := broker.Stats() + if brokerStats.TotalReady != 1 { + return false, fmt.Errorf("bad: %#v", brokerStats) + } + + return true, nil + }, func(err error) { + t.Fatalf("err: %s", err) + }) +} + +func TestBlockedEvals_UnblockFailed(t *testing.T) { + blocked, broker := testBlockedEvals(t) + + // Create blocked evals that are due to failures + e := mock.Eval() + e.Status = structs.EvalStatusBlocked + e.TriggeredBy = structs.EvalTriggerMaxPlans + e.EscapedComputedClass = true + blocked.Block(e) + + e2 := mock.Eval() + e2.Status = structs.EvalStatusBlocked + e2.TriggeredBy = structs.EvalTriggerMaxPlans + e2.ClassEligibility = map[string]bool{"v1:123": true, "v1:456": false} + blocked.Block(e2) + + // Trigger an unblock fail + blocked.UnblockFailed() + + // Verify UnblockFailed caused the eval to be immediately unblocked + blockedStats := blocked.Stats() + if blockedStats.TotalBlocked != 0 && blockedStats.TotalEscaped != 0 { + t.Fatalf("bad: %#v", blockedStats) + } + + testutil.WaitForResult(func() (bool, error) { + // Verify Unblock caused an enqueue + brokerStats := broker.Stats() + if brokerStats.TotalReady != 2 { + return false, fmt.Errorf("bad: %#v", brokerStats) + } + return true, nil + }, func(err error) { + t.Fatalf("err: %s", err) + }) + + // Reblock an eval for the same job and check that it gets tracked. + blocked.Block(e) + blockedStats = blocked.Stats() + if blockedStats.TotalBlocked != 1 && blockedStats.TotalEscaped != 1 { + t.Fatalf("bad: %#v", blockedStats) + } +} diff -Nru nomad-0.3.2+dfsg/nomad/config.go nomad-0.4.0+dfsg/nomad/config.go --- nomad-0.3.2+dfsg/nomad/config.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/config.go 2016-06-28 21:26:34.000000000 +0000 @@ -10,6 +10,7 @@ "github.com/hashicorp/memberlist" "github.com/hashicorp/nomad/nomad/structs" + "github.com/hashicorp/nomad/nomad/structs/config" "github.com/hashicorp/nomad/scheduler" "github.com/hashicorp/raft" "github.com/hashicorp/serf/serf" @@ -44,15 +45,16 @@ // Config is used to parameterize the server type Config struct { - // Bootstrap mode is used to bring up the first Consul server. - // It is required so that it can elect a leader without any - // other nodes being present + // Bootstrap mode is used to bring up the first Nomad server. It is + // required so that it can elect a leader without any other nodes + // being present Bootstrap bool - // BootstrapExpect mode is used to automatically bring up a collection of - // Consul servers. This can be used to automatically bring up a collection - // of nodes. - BootstrapExpect int + // BootstrapExpect mode is used to automatically bring up a + // collection of Nomad servers. This can be used to automatically + // bring up a collection of nodes. All operations on BootstrapExpect + // must be handled via `atomic.*Int32()` calls. + BootstrapExpect int32 // DataDir is the directory to store our state in DataDir string @@ -176,6 +178,9 @@ // a new leader is elected, since we no longer know the status // of all the heartbeats. FailoverHeartbeatTTL time.Duration + + // ConsulConfig is this Agent's Consul configuration + ConsulConfig *config.ConsulConfig } // CheckVersion is used to check if the ProtocolVersion is valid @@ -204,6 +209,7 @@ ProtocolVersion: ProtocolVersionMax, RaftConfig: raft.DefaultConfig(), RaftTimeout: 10 * time.Second, + LogOutput: os.Stderr, RPCAddr: DefaultRPCAddr, SerfConfig: serf.DefaultConfig(), NumSchedulers: 1, @@ -220,6 +226,7 @@ MaxHeartbeatsPerSecond: 50.0, HeartbeatGrace: 10 * time.Second, FailoverHeartbeatTTL: 300 * time.Second, + ConsulConfig: config.DefaultConsulConfig(), } // Enable all known schedulers by default diff -Nru nomad-0.3.2+dfsg/nomad/core_sched.go nomad-0.4.0+dfsg/nomad/core_sched.go --- nomad-0.3.2+dfsg/nomad/core_sched.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/core_sched.go 2016-06-28 21:26:34.000000000 +0000 @@ -105,20 +105,29 @@ continue } + allEvalsGC := true + var jobAlloc, jobEval []string for _, eval := range evals { - gc, allocs, err := c.gcEval(eval, oldThreshold) - if err != nil || !gc { - // We skip the job because it is not finished if it has - // non-terminal allocations. + gc, allocs, err := c.gcEval(eval, oldThreshold, true) + if err != nil { continue OUTER } - gcEval = append(gcEval, eval.ID) - gcAlloc = append(gcAlloc, allocs...) + if gc { + jobEval = append(jobEval, eval.ID) + jobAlloc = append(jobAlloc, allocs...) + } else { + allEvalsGC = false + break + } } // Job is eligible for garbage collection - gcJob = append(gcJob, job.ID) + if allEvalsGC { + gcJob = append(gcJob, job.ID) + gcAlloc = append(gcAlloc, jobAlloc...) + gcEval = append(gcEval, jobEval...) + } } // Fast-path the nothing case @@ -181,33 +190,17 @@ for raw := iter.Next(); raw != nil; raw = iter.Next() { eval := raw.(*structs.Evaluation) - gc, allocs, err := c.gcEval(eval, oldThreshold) + // The Evaluation GC should not handle batch jobs since those need to be + // garbage collected in one shot + gc, allocs, err := c.gcEval(eval, oldThreshold, false) if err != nil { return err } - // If the eval is from a running "batch" job we don't want to garbage - // collect its allocations. If there is a long running batch job and its - // terminal allocations get GC'd the scheduler would re-run the - // allocations. - if eval.Type == structs.JobTypeBatch { - // Check if the job is running - job, err := c.snap.JobByID(eval.JobID) - if err != nil { - return err - } - - // If the job has been deregistered, we want to garbage collect the - // allocations and evaluations. - if job != nil && len(allocs) != 0 { - continue - } - } - if gc { gcEval = append(gcEval, eval.ID) - gcAlloc = append(gcAlloc, allocs...) } + gcAlloc = append(gcAlloc, allocs...) } // Fast-path the nothing case @@ -225,13 +218,34 @@ // allocs are not older than the threshold. If the eval should be garbage // collected, the associated alloc ids that should also be removed are also // returned -func (c *CoreScheduler) gcEval(eval *structs.Evaluation, thresholdIndex uint64) ( +func (c *CoreScheduler) gcEval(eval *structs.Evaluation, thresholdIndex uint64, allowBatch bool) ( bool, []string, error) { // Ignore non-terminal and new evaluations if !eval.TerminalStatus() || eval.ModifyIndex > thresholdIndex { return false, nil, nil } + // If the eval is from a running "batch" job we don't want to garbage + // collect its allocations. If there is a long running batch job and its + // terminal allocations get GC'd the scheduler would re-run the + // allocations. + if eval.Type == structs.JobTypeBatch { + if !allowBatch { + return false, nil, nil + } + + // Check if the job is running + job, err := c.snap.JobByID(eval.JobID) + if err != nil { + return false, nil, err + } + + // We don't want to gc anything related to a job which is not dead + if job != nil && job.Status != structs.JobStatusDead { + return false, nil, nil + } + } + // Get the allocations by eval allocs, err := c.snap.AllocsByEval(eval.ID) if err != nil { @@ -241,19 +255,20 @@ } // Scan the allocations to ensure they are terminal and old + gcEval := true + var gcAllocIDs []string for _, alloc := range allocs { if !alloc.TerminalStatus() || alloc.ModifyIndex > thresholdIndex { - return false, nil, nil + // Can't GC the evaluation since not all of the allocations are + // terminal + gcEval = false + } else { + // The allocation is eligible to be GC'd + gcAllocIDs = append(gcAllocIDs, alloc.ID) } } - allocIds := make([]string, len(allocs)) - for i, alloc := range allocs { - allocIds[i] = alloc.ID - } - - // Evaluation is eligible for garbage collection - return true, allocIds, nil + return gcEval, gcAllocIDs, nil } // evalReap contacts the leader and issues a reap on the passed evals and @@ -343,6 +358,7 @@ // Collect the nodes to GC var gcNode []string +OUTER: for { raw := iter.Next() if raw == nil { @@ -363,9 +379,14 @@ continue } - // If there are any allocations, skip the node - if len(allocs) > 0 { - continue + // If there are any non-terminal allocations, skip the node. If the node + // is terminal and the allocations are not, the scheduler may not have + // run yet to transition the allocs on the node to terminal. We delay + // GC'ing until this happens. + for _, alloc := range allocs { + if !alloc.TerminalStatus() { + continue OUTER + } } // Node is eligible for garbage collection diff -Nru nomad-0.3.2+dfsg/nomad/core_sched_test.go nomad-0.4.0+dfsg/nomad/core_sched_test.go --- nomad-0.3.2+dfsg/nomad/core_sched_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/core_sched_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -44,8 +44,7 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobEvalGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobEvalGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) @@ -69,17 +68,38 @@ } } -func TestCoreScheduler_EvalGC_Batch_NoAllocs(t *testing.T) { +// An EvalGC should never reap a batch job +func TestCoreScheduler_EvalGC_Batch(t *testing.T) { s1 := testServer(t, nil) defer s1.Shutdown() testutil.WaitForLeader(t, s1.RPC) - // Insert "dead" eval + // Insert a "dead" job state := s1.fsm.State() + job := mock.Job() + job.Type = structs.JobTypeBatch + job.Status = structs.JobStatusDead + err := state.UpsertJob(1000, job) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Insert "complete" eval eval := mock.Eval() + eval.Status = structs.EvalStatusComplete eval.Type = structs.JobTypeBatch - eval.Status = structs.EvalStatusFailed - err := state.UpsertEvals(1000, []*structs.Evaluation{eval}) + eval.JobID = job.ID + err = state.UpsertEvals(1001, []*structs.Evaluation{eval}) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Insert "failed" alloc + alloc := mock.Alloc() + alloc.JobID = job.ID + alloc.EvalID = eval.ID + alloc.DesiredStatus = structs.AllocDesiredStatusFailed + err = state.UpsertAllocs(1002, []*structs.Allocation{alloc}) if err != nil { t.Fatalf("err: %v", err) } @@ -96,52 +116,65 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobEvalGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobEvalGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) } - // Should be gone because there is no alloc associated + // Nothing should be gone out, err := state.EvalByID(eval.ID) if err != nil { t.Fatalf("err: %v", err) } - if out != nil { + if out == nil { t.Fatalf("bad: %v", out) } -} -func TestCoreScheduler_EvalGC_Batch_Allocs_WithJob(t *testing.T) { - s1 := testServer(t, nil) - defer s1.Shutdown() - testutil.WaitForLeader(t, s1.RPC) + outA, err := state.AllocByID(alloc.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outA == nil { + t.Fatalf("bad: %v", outA) + } - // Insert job. - state := s1.fsm.State() - job := mock.Job() - job.Type = structs.JobTypeBatch - err := state.UpsertJob(1000, job) + outB, err := state.JobByID(job.ID) if err != nil { t.Fatalf("err: %v", err) } + if outB == nil { + t.Fatalf("bad: %v", outB) + } +} + +func TestCoreScheduler_EvalGC_Partial(t *testing.T) { + s1 := testServer(t, nil) + defer s1.Shutdown() + testutil.WaitForLeader(t, s1.RPC) // Insert "dead" eval + state := s1.fsm.State() eval := mock.Eval() - eval.Type = structs.JobTypeBatch - eval.Status = structs.EvalStatusFailed - eval.JobID = job.ID - if err := state.UpsertEvals(1001, []*structs.Evaluation{eval}); err != nil { + eval.Status = structs.EvalStatusComplete + err := state.UpsertEvals(1000, []*structs.Evaluation{eval}) + if err != nil { t.Fatalf("err: %v", err) } // Insert "dead" alloc alloc := mock.Alloc() alloc.EvalID = eval.ID - alloc.JobID = job.ID alloc.DesiredStatus = structs.AllocDesiredStatusFailed - err = state.UpsertAllocs(1002, []*structs.Allocation{alloc}) + err = state.UpsertAllocs(1001, []*structs.Allocation{alloc}) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Insert "running" alloc + alloc2 := mock.Alloc() + alloc2.EvalID = eval.ID + err = state.UpsertAllocs(1002, []*structs.Allocation{alloc2}) if err != nil { t.Fatalf("err: %v", err) } @@ -158,14 +191,13 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobEvalGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobEvalGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) } - // Shouldn't be gone because there are associated allocs. + // Should not be gone out, err := state.EvalByID(eval.ID) if err != nil { t.Fatalf("err: %v", err) @@ -174,16 +206,25 @@ t.Fatalf("bad: %v", out) } - outA, err := state.AllocByID(alloc.ID) + outA, err := state.AllocByID(alloc2.ID) if err != nil { t.Fatalf("err: %v", err) } if outA == nil { t.Fatalf("bad: %v", outA) } + + // Should be gone + outB, err := state.AllocByID(alloc.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outB != nil { + t.Fatalf("bad: %v", outB) + } } -func TestCoreScheduler_EvalGC_Batch_Allocs_NoJob(t *testing.T) { +func TestCoreScheduler_EvalGC_Force(t *testing.T) { s1 := testServer(t, nil) defer s1.Shutdown() testutil.WaitForLeader(t, s1.RPC) @@ -191,7 +232,6 @@ // Insert "dead" eval state := s1.fsm.State() eval := mock.Eval() - eval.Type = structs.JobTypeBatch eval.Status = structs.EvalStatusFailed err := state.UpsertEvals(1000, []*structs.Evaluation{eval}) if err != nil { @@ -207,10 +247,6 @@ t.Fatalf("err: %v", err) } - // Update the time tables to make this work - tt := s1.fsm.TimeTable() - tt.Witness(2000, time.Now().UTC().Add(-1*s1.config.EvalGCThreshold)) - // Create a core scheduler snap, err := state.Snapshot() if err != nil { @@ -219,14 +255,13 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobEvalGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobForceGC, 1001) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) } - // Should be gone because the job is deregistered. + // Should be gone out, err := state.EvalByID(eval.ID) if err != nil { t.Fatalf("err: %v", err) @@ -234,30 +269,33 @@ if out != nil { t.Fatalf("bad: %v", out) } + + outA, err := state.AllocByID(alloc.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outA != nil { + t.Fatalf("bad: %v", outA) + } } -func TestCoreScheduler_EvalGC_Force(t *testing.T) { +func TestCoreScheduler_NodeGC(t *testing.T) { s1 := testServer(t, nil) defer s1.Shutdown() testutil.WaitForLeader(t, s1.RPC) - // Insert "dead" eval + // Insert "dead" node state := s1.fsm.State() - eval := mock.Eval() - eval.Status = structs.EvalStatusFailed - err := state.UpsertEvals(1000, []*structs.Evaluation{eval}) + node := mock.Node() + node.Status = structs.NodeStatusDown + err := state.UpsertNode(1000, node) if err != nil { t.Fatalf("err: %v", err) } - // Insert "dead" alloc - alloc := mock.Alloc() - alloc.EvalID = eval.ID - alloc.DesiredStatus = structs.AllocDesiredStatusFailed - err = state.UpsertAllocs(1001, []*structs.Allocation{alloc}) - if err != nil { - t.Fatalf("err: %v", err) - } + // Update the time tables to make this work + tt := s1.fsm.TimeTable() + tt.Witness(2000, time.Now().UTC().Add(-1*s1.config.NodeGCThreshold)) // Create a core scheduler snap, err := state.Snapshot() @@ -267,31 +305,72 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobForceGC) + gc := s1.coreJobEval(structs.CoreJobNodeGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) } // Should be gone - out, err := state.EvalByID(eval.ID) + out, err := state.NodeByID(node.ID) if err != nil { t.Fatalf("err: %v", err) } if out != nil { t.Fatalf("bad: %v", out) } +} - outA, err := state.AllocByID(alloc.ID) +func TestCoreScheduler_NodeGC_TerminalAllocs(t *testing.T) { + s1 := testServer(t, nil) + defer s1.Shutdown() + testutil.WaitForLeader(t, s1.RPC) + + // Insert "dead" node + state := s1.fsm.State() + node := mock.Node() + node.Status = structs.NodeStatusDown + err := state.UpsertNode(1000, node) if err != nil { t.Fatalf("err: %v", err) } - if outA != nil { - t.Fatalf("bad: %v", outA) + + // Insert a terminal alloc on that node + alloc := mock.Alloc() + alloc.DesiredStatus = structs.AllocDesiredStatusStop + if err := state.UpsertAllocs(1001, []*structs.Allocation{alloc}); err != nil { + t.Fatalf("err: %v", err) + } + + // Update the time tables to make this work + tt := s1.fsm.TimeTable() + tt.Witness(2000, time.Now().UTC().Add(-1*s1.config.NodeGCThreshold)) + + // Create a core scheduler + snap, err := state.Snapshot() + if err != nil { + t.Fatalf("err: %v", err) + } + core := NewCoreScheduler(s1, snap) + + // Attempt the GC + gc := s1.coreJobEval(structs.CoreJobNodeGC, 2000) + err = core.Process(gc) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Should be gone + out, err := state.NodeByID(node.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if out != nil { + t.Fatalf("bad: %v", out) } } -func TestCoreScheduler_NodeGC(t *testing.T) { +func TestCoreScheduler_NodeGC_RunningAllocs(t *testing.T) { s1 := testServer(t, nil) defer s1.Shutdown() testutil.WaitForLeader(t, s1.RPC) @@ -305,6 +384,15 @@ t.Fatalf("err: %v", err) } + // Insert a running alloc on that node + alloc := mock.Alloc() + alloc.NodeID = node.ID + alloc.DesiredStatus = structs.AllocDesiredStatusRun + alloc.ClientStatus = structs.AllocClientStatusRunning + if err := state.UpsertAllocs(1001, []*structs.Allocation{alloc}); err != nil { + t.Fatalf("err: %v", err) + } + // Update the time tables to make this work tt := s1.fsm.TimeTable() tt.Witness(2000, time.Now().UTC().Add(-1*s1.config.NodeGCThreshold)) @@ -317,19 +405,18 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobNodeGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobNodeGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) } - // Should be gone + // Should still be here out, err := state.NodeByID(node.ID) if err != nil { t.Fatalf("err: %v", err) } - if out != nil { + if out == nil { t.Fatalf("bad: %v", out) } } @@ -356,7 +443,7 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobForceGC) + gc := s1.coreJobEval(structs.CoreJobForceGC, 1000) err = core.Process(gc) if err != nil { t.Fatalf("err: %v", err) @@ -442,8 +529,7 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobJobGC) - gc.ModifyIndex = 2000 + gc := s1.coreJobEval(structs.CoreJobJobGC, 2000) err = core.Process(gc) if err != nil { t.Fatalf("test(%s) err: %v", test.test, err) @@ -476,6 +562,114 @@ } } +// This test ensures that batch jobs are GC'd in one shot, meaning it all +// allocs/evals and job or nothing +func TestCoreScheduler_JobGC_OneShot(t *testing.T) { + s1 := testServer(t, nil) + defer s1.Shutdown() + testutil.WaitForLeader(t, s1.RPC) + + // Insert job. + state := s1.fsm.State() + job := mock.Job() + job.Type = structs.JobTypeBatch + err := state.UpsertJob(1000, job) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Insert two complete evals + eval := mock.Eval() + eval.JobID = job.ID + eval.Status = structs.EvalStatusComplete + + eval2 := mock.Eval() + eval2.JobID = job.ID + eval2.Status = structs.EvalStatusComplete + + err = state.UpsertEvals(1001, []*structs.Evaluation{eval, eval2}) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Insert one complete alloc and one running on distinct evals + alloc := mock.Alloc() + alloc.JobID = job.ID + alloc.EvalID = eval.ID + alloc.DesiredStatus = structs.AllocDesiredStatusStop + + alloc2 := mock.Alloc() + alloc2.JobID = job.ID + alloc2.EvalID = eval2.ID + alloc2.DesiredStatus = structs.AllocDesiredStatusRun + + err = state.UpsertAllocs(1002, []*structs.Allocation{alloc, alloc2}) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Force the jobs state to dead + job.Status = structs.JobStatusDead + + // Update the time tables to make this work + tt := s1.fsm.TimeTable() + tt.Witness(2000, time.Now().UTC().Add(-1*s1.config.JobGCThreshold)) + + // Create a core scheduler + snap, err := state.Snapshot() + if err != nil { + t.Fatalf("err: %v", err) + } + core := NewCoreScheduler(s1, snap) + + // Attempt the GC + gc := s1.coreJobEval(structs.CoreJobJobGC, 2000) + err = core.Process(gc) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Should still exist + out, err := state.JobByID(job.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("bad: %v", out) + } + + outE, err := state.EvalByID(eval.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outE == nil { + t.Fatalf("bad: %v", outE) + } + + outE2, err := state.EvalByID(eval2.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outE2 == nil { + t.Fatalf("bad: %v", outE2) + } + + outA, err := state.AllocByID(alloc.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outA == nil { + t.Fatalf("bad: %v", outA) + } + outA2, err := state.AllocByID(alloc2.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if outA2 == nil { + t.Fatalf("bad: %v", outA2) + } +} + func TestCoreScheduler_JobGC_Force(t *testing.T) { tests := []struct { test, evalStatus, allocStatus string @@ -542,7 +736,7 @@ core := NewCoreScheduler(s1, snap) // Attempt the GC - gc := s1.coreJobEval(structs.CoreJobForceGC) + gc := s1.coreJobEval(structs.CoreJobForceGC, 1002) err = core.Process(gc) if err != nil { t.Fatalf("test(%s) err: %v", test.test, err) diff -Nru nomad-0.3.2+dfsg/nomad/eval_broker.go nomad-0.4.0+dfsg/nomad/eval_broker.go --- nomad-0.3.2+dfsg/nomad/eval_broker.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/eval_broker.go 2016-06-28 21:26:34.000000000 +0000 @@ -67,6 +67,12 @@ // waiting is used to notify on a per-scheduler basis of ready work waiting map[string]chan struct{} + // requeue tracks evaluations that need to be re-enqueued once the current + // evaluation finishes by token. If the token is Nacked or rejected the + // evaluation is dropped but if Acked successfully, the evaluation is + // queued. + requeue map[string]*structs.Evaluation + // timeWait has evaluations that are waiting for time to elapse timeWait map[string]*time.Timer @@ -104,6 +110,7 @@ ready: make(map[string]PendingEvaluations), unack: make(map[string]*unackEval), waiting: make(map[string]chan struct{}), + requeue: make(map[string]*structs.Evaluation), timeWait: make(map[string]*time.Timer), } b.stats.ByScheduler = make(map[string]*SchedulerStats) @@ -128,26 +135,52 @@ } } -// EnqueueAll is used to enqueue many evaluations. -// TODO: Update enqueueLocked to take a list and use heap.Fix instead of -// heap.Push in order to make the running time O(log(n+m)) instead of -// O(m*log(n)) where m is the size of the evals and n is the size of the -// existing heap. -func (b *EvalBroker) EnqueueAll(evals []*structs.Evaluation) { - for _, e := range evals { - b.Enqueue(e) - } +// Enqueue is used to enqueue a new evaluation +func (b *EvalBroker) Enqueue(eval *structs.Evaluation) { + b.l.Lock() + defer b.l.Unlock() + b.processEnqueue(eval, "") } -// Enqueue is used to enqueue an evaluation -// TODO: remove the error return value -func (b *EvalBroker) Enqueue(eval *structs.Evaluation) error { +// EnqueueAll is used to enqueue many evaluations. The map allows evaluations +// that are being re-enqueued to include their token. +// +// When requeueing an evaluation that potentially may be already +// enqueued. The evaluation is handled in one of the following ways: +// * Evaluation not outstanding: Process as a normal Enqueue +// * Evaluation outstanding: Do not allow the evaluation to be dequeued til: +// * Ack received: Unblock the evaluation allowing it to be dequeued +// * Nack received: Drop the evaluation as it was created as a result of a +// scheduler run that was Nack'd +func (b *EvalBroker) EnqueueAll(evals map[*structs.Evaluation]string) { + // The lock needs to be held until all evaluations are enqueued. This is so + // that when Dequeue operations are unblocked they will pick the highest + // priority evaluations. b.l.Lock() defer b.l.Unlock() + for eval, token := range evals { + b.processEnqueue(eval, token) + } +} +// processEnqueue deduplicates evals and either enqueue immediately or enforce +// the evals wait time. If the token is passed, and the evaluation ID is +// outstanding, the evaluation is blocked til an Ack/Nack is received. +// processEnqueue must be called with the lock held. +func (b *EvalBroker) processEnqueue(eval *structs.Evaluation, token string) { // Check if already enqueued if _, ok := b.evals[eval.ID]; ok { - return nil + if token == "" { + return + } + + // If the token has been passed, the evaluation is being reblocked by + // the scheduler and should be processed once the outstanding evaluation + // is Acked or Nacked. + if unack, ok := b.unack[eval.ID]; ok && unack.Token == token { + b.requeue[token] = eval + } + return } else if b.enabled { b.evals[eval.ID] = 0 } @@ -159,11 +192,10 @@ }) b.timeWait[eval.ID] = timer b.stats.TotalWaiting += 1 - return nil + return } b.enqueueLocked(eval, eval.Type) - return nil } // enqueueWaiting is used to enqueue a waiting evaluation @@ -312,7 +344,7 @@ default: // Multiple tasks. We pick a random task so that we fairly // distribute work. - offset := rand.Int63() % int64(n) + offset := rand.Intn(n) return b.dequeueForSched(eligibleSched[offset]) } } @@ -430,6 +462,10 @@ b.l.Lock() defer b.l.Unlock() + // Always delete the requeued evaluation. Either the Ack is successful and + // we requeue it or it isn't and we want to remove it. + defer delete(b.requeue, token) + // Lookup the unack'd eval unack, ok := b.unack[evalID] if !ok { @@ -470,8 +506,13 @@ eval := raw.(*structs.Evaluation) b.stats.TotalBlocked -= 1 b.enqueueLocked(eval, eval.Type) - return nil } + + // Re-enqueue the evaluation. + if eval, ok := b.requeue[token]; ok { + b.processEnqueue(eval, "") + } + return nil } @@ -480,6 +521,10 @@ b.l.Lock() defer b.l.Unlock() + // Always delete the requeued evaluation since the Nack means the requeue is + // invalid. + delete(b.requeue, token) + // Lookup the unack'd eval unack, ok := b.unack[evalID] if !ok { diff -Nru nomad-0.3.2+dfsg/nomad/eval_broker_test.go nomad-0.4.0+dfsg/nomad/eval_broker_test.go --- nomad-0.3.2+dfsg/nomad/eval_broker_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/eval_broker_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -31,10 +31,7 @@ // Enqueue, but broker is disabled! eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Verify nothing was done stats := b.Stats() @@ -48,16 +45,10 @@ // Enable the broker, and enqueue b.SetEnabled(true) - err = b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Double enqueue is a no-op - err = b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) if !b.Enabled() { t.Fatalf("should be enabled") @@ -206,26 +197,17 @@ b.SetEnabled(true) eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) eval2 := mock.Eval() eval2.JobID = eval.JobID eval2.CreateIndex = eval.CreateIndex + 1 - err = b.Enqueue(eval2) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval2) eval3 := mock.Eval() eval3.JobID = eval.JobID eval3.CreateIndex = eval.CreateIndex + 2 - err = b.Enqueue(eval3) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval3) stats := b.Stats() if stats.TotalReady != 1 { @@ -359,10 +341,7 @@ // Enqueue eval := mock.Eval() b.SetEnabled(true) - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Flush via SetEnabled b.SetEnabled(false) @@ -425,10 +404,7 @@ // Enqueue to unblock the dequeue. eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) select { case <-doneCh: @@ -558,10 +534,7 @@ // Enqueue eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Ensure dequeue select { @@ -581,10 +554,7 @@ // Enqueue eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Dequeue out, _, err := b.Dequeue(defaultSched, time.Second) @@ -619,10 +589,7 @@ // Enqueue eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Dequeue out, token, err := b.Dequeue(defaultSched, time.Second) @@ -662,10 +629,7 @@ // Enqueue eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Dequeue out, token, err := b.Dequeue(defaultSched, time.Second) @@ -711,10 +675,7 @@ b.SetEnabled(true) eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) for i := 0; i < 3; i++ { // Dequeue should work @@ -803,10 +764,7 @@ b.SetEnabled(true) eval := mock.Eval() - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) for i := 0; i < 3; i++ { // Dequeue should work @@ -850,10 +808,7 @@ // Create an eval that should wait eval := mock.Eval() eval.Wait = 10 * time.Millisecond - err := b.Enqueue(eval) - if err != nil { - t.Fatalf("err: %v", err) - } + b.Enqueue(eval) // Verify waiting stats := b.Stats() @@ -885,3 +840,150 @@ t.Fatalf("bad : %#v", out) } } + +// Ensure that priority is taken into account when enqueueing many evaluations. +func TestEvalBroker_EnqueueAll_Dequeue_Fair(t *testing.T) { + b := testBroker(t, 0) + b.SetEnabled(true) + + // Start with a blocked dequeue + outCh := make(chan *structs.Evaluation, 1) + go func() { + start := time.Now() + out, _, err := b.Dequeue(defaultSched, time.Second) + end := time.Now() + outCh <- out + if err != nil { + t.Fatalf("err: %v", err) + } + if d := end.Sub(start); d < 5*time.Millisecond { + t.Fatalf("bad: %v", d) + } + }() + + // Wait for a bit + time.Sleep(5 * time.Millisecond) + + // Enqueue + evals := make(map[*structs.Evaluation]string, 8) + expectedPriority := 90 + for i := 10; i <= expectedPriority; i += 10 { + eval := mock.Eval() + eval.Priority = i + evals[eval] = "" + + } + b.EnqueueAll(evals) + + // Ensure dequeue + select { + case out := <-outCh: + if out.Priority != expectedPriority { + t.Fatalf("bad: %v", out) + } + case <-time.After(time.Second): + t.Fatalf("timeout") + } +} + +func TestEvalBroker_EnqueueAll_Requeue_Ack(t *testing.T) { + b := testBroker(t, 0) + b.SetEnabled(true) + + // Create the evaluation, enqueue and dequeue + eval := mock.Eval() + b.Enqueue(eval) + + out, token, err := b.Dequeue(defaultSched, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out != eval { + t.Fatalf("bad : %#v", out) + } + + // Requeue the same evaluation. + b.EnqueueAll(map[*structs.Evaluation]string{eval: token}) + + // The stats should show one unacked + stats := b.Stats() + if stats.TotalReady != 0 { + t.Fatalf("bad: %#v", stats) + } + if stats.TotalUnacked != 1 { + t.Fatalf("bad: %#v", stats) + } + + // Ack the evaluation. + if err := b.Ack(eval.ID, token); err != nil { + t.Fatalf("err: %v", err) + } + + // Check stats again as this should cause the re-enqueued one to transition + // into the ready state + stats = b.Stats() + if stats.TotalReady != 1 { + t.Fatalf("bad: %#v", stats) + } + if stats.TotalUnacked != 0 { + t.Fatalf("bad: %#v", stats) + } + + // Another dequeue should be successful + out2, token2, err := b.Dequeue(defaultSched, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out2 != eval { + t.Fatalf("bad : %#v", out) + } + if token == token2 { + t.Fatalf("bad : %s and %s", token, token2) + } +} + +func TestEvalBroker_EnqueueAll_Requeue_Nack(t *testing.T) { + b := testBroker(t, 0) + b.SetEnabled(true) + + // Create the evaluation, enqueue and dequeue + eval := mock.Eval() + b.Enqueue(eval) + + out, token, err := b.Dequeue(defaultSched, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out != eval { + t.Fatalf("bad : %#v", out) + } + + // Requeue the same evaluation. + b.EnqueueAll(map[*structs.Evaluation]string{eval: token}) + + // The stats should show one unacked + stats := b.Stats() + if stats.TotalReady != 0 { + t.Fatalf("bad: %#v", stats) + } + if stats.TotalUnacked != 1 { + t.Fatalf("bad: %#v", stats) + } + + // Nack the evaluation. + if err := b.Nack(eval.ID, token); err != nil { + t.Fatalf("err: %v", err) + } + + // Check stats again as this should cause the re-enqueued one to be dropped + stats = b.Stats() + if stats.TotalReady != 1 { + t.Fatalf("bad: %#v", stats) + } + if stats.TotalUnacked != 0 { + t.Fatalf("bad: %#v", stats) + } + if len(b.requeue) != 0 { + t.Fatalf("bad: %#v", b.requeue) + } +} diff -Nru nomad-0.3.2+dfsg/nomad/eval_endpoint.go nomad-0.4.0+dfsg/nomad/eval_endpoint.go --- nomad-0.3.2+dfsg/nomad/eval_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/eval_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -202,6 +202,46 @@ return nil } +// Reblock is used to reinsert an existing blocked evaluation into the blocked +// evaluation tracker. +func (e *Eval) Reblock(args *structs.EvalUpdateRequest, reply *structs.GenericResponse) error { + if done, err := e.srv.forward("Eval.Reblock", args, args, reply); done { + return err + } + defer metrics.MeasureSince([]string{"nomad", "eval", "reblock"}, time.Now()) + + // Ensure there is only a single update with token + if len(args.Evals) != 1 { + return fmt.Errorf("only a single eval can be reblocked") + } + eval := args.Evals[0] + + // Verify the evaluation is outstanding, and that the tokens match. + if err := e.srv.evalBroker.OutstandingReset(eval.ID, args.EvalToken); err != nil { + return err + } + + // Look for the eval + snap, err := e.srv.fsm.State().Snapshot() + if err != nil { + return err + } + out, err := snap.EvalByID(eval.ID) + if err != nil { + return err + } + if out == nil { + return fmt.Errorf("evaluation does not exist") + } + if out.Status != structs.EvalStatusBlocked { + return fmt.Errorf("evaluation not blocked") + } + + // Reblock the eval + e.srv.blockedEvals.Reblock(eval, args.EvalToken) + return nil +} + // Reap is used to cleanup dead evaluations and allocations func (e *Eval) Reap(args *structs.EvalDeleteRequest, reply *structs.GenericResponse) error { diff -Nru nomad-0.3.2+dfsg/nomad/eval_endpoint_test.go nomad-0.4.0+dfsg/nomad/eval_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/eval_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/eval_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -138,12 +138,7 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) // Dequeue the eval get := &structs.EvalDequeueRequest{ @@ -580,3 +575,127 @@ t.Fatalf("bad: %#v", resp.Allocations) } } + +func TestEvalEndpoint_Reblock_NonExistent(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + + testutil.WaitForResult(func() (bool, error) { + return s1.evalBroker.Enabled(), nil + }, func(err error) { + t.Fatalf("should enable eval broker") + }) + + // Create the register request + eval1 := mock.Eval() + s1.evalBroker.Enqueue(eval1) + out, token, err := s1.evalBroker.Dequeue(defaultSched, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("missing eval") + } + + get := &structs.EvalUpdateRequest{ + Evals: []*structs.Evaluation{eval1}, + EvalToken: token, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + var resp structs.GenericResponse + if err := msgpackrpc.CallWithCodec(codec, "Eval.Reblock", get, &resp); err == nil { + t.Fatalf("expect error since eval does not exist") + } +} + +func TestEvalEndpoint_Reblock_NonBlocked(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + + testutil.WaitForResult(func() (bool, error) { + return s1.evalBroker.Enabled(), nil + }, func(err error) { + t.Fatalf("should enable eval broker") + }) + + // Create the eval + eval1 := mock.Eval() + s1.evalBroker.Enqueue(eval1) + + // Insert it into the state store + if err := s1.fsm.State().UpsertEvals(1000, []*structs.Evaluation{eval1}); err != nil { + t.Fatal(err) + } + + out, token, err := s1.evalBroker.Dequeue(defaultSched, 2*time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("missing eval") + } + + get := &structs.EvalUpdateRequest{ + Evals: []*structs.Evaluation{eval1}, + EvalToken: token, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + var resp structs.GenericResponse + if err := msgpackrpc.CallWithCodec(codec, "Eval.Reblock", get, &resp); err == nil { + t.Fatalf("should error since eval was not in blocked state", err) + } +} + +func TestEvalEndpoint_Reblock(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + + testutil.WaitForResult(func() (bool, error) { + return s1.evalBroker.Enabled(), nil + }, func(err error) { + t.Fatalf("should enable eval broker") + }) + + // Create the eval + eval1 := mock.Eval() + eval1.Status = structs.EvalStatusBlocked + s1.evalBroker.Enqueue(eval1) + + // Insert it into the state store + if err := s1.fsm.State().UpsertEvals(1000, []*structs.Evaluation{eval1}); err != nil { + t.Fatal(err) + } + + out, token, err := s1.evalBroker.Dequeue(defaultSched, 7*time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("bad: %v", out) + } + + get := &structs.EvalUpdateRequest{ + Evals: []*structs.Evaluation{eval1}, + EvalToken: token, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + var resp structs.GenericResponse + if err := msgpackrpc.CallWithCodec(codec, "Eval.Reblock", get, &resp); err != nil { + t.Fatalf("err: %v", err) + } + + // Check that it is blocked + bStats := s1.blockedEvals.Stats() + if bStats.TotalBlocked+bStats.TotalEscaped == 0 { + t.Fatalf("ReblockEval didn't insert eval into the blocked eval tracker") + } +} diff -Nru nomad-0.3.2+dfsg/nomad/fsm.go nomad-0.4.0+dfsg/nomad/fsm.go --- nomad-0.3.2+dfsg/nomad/fsm.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/fsm.go 2016-06-28 21:26:34.000000000 +0000 @@ -158,7 +158,7 @@ // Unblock evals for the nodes computed node class if it is in a ready // state. if req.Node.Status == structs.NodeStatusReady { - n.blockedEvals.Unblock(req.Node.ComputedClass) + n.blockedEvals.Unblock(req.Node.ComputedClass, index) } return nil @@ -199,7 +199,7 @@ return err } - n.blockedEvals.Unblock(node.ComputedClass) + n.blockedEvals.Unblock(node.ComputedClass, index) } return nil @@ -331,10 +331,7 @@ for _, eval := range req.Evals { if eval.ShouldEnqueue() { - if err := n.evalBroker.Enqueue(eval); err != nil { - n.logger.Printf("[ERR] nomad.fsm: failed to enqueue evaluation %s: %v", eval.ID, err) - return err - } + n.evalBroker.Enqueue(eval) } else if eval.ShouldBlock() { n.blockedEvals.Block(eval) } @@ -423,7 +420,7 @@ return err } - n.blockedEvals.Unblock(node.ComputedClass) + n.blockedEvals.Unblock(node.ComputedClass, index) } } diff -Nru nomad-0.3.2+dfsg/nomad/heartbeat.go nomad-0.4.0+dfsg/nomad/heartbeat.go --- nomad-0.3.2+dfsg/nomad/heartbeat.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/heartbeat.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,6 +4,7 @@ "time" "github.com/armon/go-metrics" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/nomad/nomad/structs" ) @@ -49,9 +50,8 @@ // Compute the target TTL value n := len(s.heartbeatTimers) - ttl := rateScaledInterval(s.config.MaxHeartbeatsPerSecond, - s.config.MinHeartbeatTTL, n) - ttl += randomStagger(ttl) + ttl := lib.RateScaledInterval(s.config.MaxHeartbeatsPerSecond, s.config.MinHeartbeatTTL, n) + ttl += lib.RandomStagger(ttl) // Reset the TTL s.resetHeartbeatTimerLocked(id, ttl+s.config.HeartbeatGrace) @@ -72,7 +72,7 @@ return } - // Create a new timer to track expiration of thi sheartbeat + // Create a new timer to track expiration of this heartbeat timer := time.AfterFunc(ttl, func() { s.invalidateHeartbeat(id) }) diff -Nru nomad-0.3.2+dfsg/nomad/job_endpoint.go nomad-0.4.0+dfsg/nomad/job_endpoint.go --- nomad-0.3.2+dfsg/nomad/job_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/job_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -10,6 +10,13 @@ "github.com/hashicorp/nomad/client/driver" "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/nomad/nomad/watch" + "github.com/hashicorp/nomad/scheduler" +) + +const ( + // RegisterEnforceIndexErrPrefix is the prefix to use in errors caused by + // enforcing the job modify index during registers. + RegisterEnforceIndexErrPrefix = "Enforcing job modify index" ) // Job endpoint is used for job interactions @@ -32,39 +39,34 @@ // Initialize the job fields (sets defaults and any necessary init work). args.Job.InitFields() - if err := args.Job.Validate(); err != nil { + // Validate the job. + if err := validateJob(args.Job); err != nil { return err } - // Validate the driver configurations. - var driverErrors multierror.Error - for _, tg := range args.Job.TaskGroups { - for _, task := range tg.Tasks { - d, err := driver.NewDriver( - task.Driver, - driver.NewEmptyDriverContext(), - ) - if err != nil { - msg := "failed to create driver for task %q in group %q for validation: %v" - driverErrors.Errors = append(driverErrors.Errors, fmt.Errorf(msg, tg.Name, task.Name, err)) - continue - } - - if err := d.Validate(task.Config); err != nil { - formatted := fmt.Errorf("group %q -> task %q -> config: %v", tg.Name, task.Name, err) - driverErrors.Errors = append(driverErrors.Errors, formatted) + if args.EnforceIndex { + // Lookup the job + snap, err := j.srv.fsm.State().Snapshot() + if err != nil { + return err + } + job, err := snap.JobByID(args.Job.ID) + if err != nil { + return err + } + jmi := args.JobModifyIndex + if job != nil { + if jmi == 0 { + return fmt.Errorf("%s 0: job already exists", RegisterEnforceIndexErrPrefix) + } else if jmi != job.JobModifyIndex { + return fmt.Errorf("%s %d: job exists with conflicting job modify index: %d", + RegisterEnforceIndexErrPrefix, jmi, job.JobModifyIndex) } + } else if jmi != 0 { + return fmt.Errorf("%s %d: job does not exist", RegisterEnforceIndexErrPrefix, jmi) } } - if len(driverErrors.Errors) != 0 { - return driverErrors.ErrorOrNil() - } - - if args.Job.Type == structs.JobTypeCore { - return fmt.Errorf("job type cannot be core") - } - // Commit this update via Raft _, index, err := j.srv.raftApply(structs.JobRegisterRequestType, args) if err != nil { @@ -414,3 +416,146 @@ j.srv.setQueryMeta(&reply.QueryMeta) return nil } + +// Plan is used to cause a dry-run evaluation of the Job and return the results +// with a potential diff containing annotations. +func (j *Job) Plan(args *structs.JobPlanRequest, reply *structs.JobPlanResponse) error { + if done, err := j.srv.forward("Job.Plan", args, args, reply); done { + return err + } + defer metrics.MeasureSince([]string{"nomad", "job", "plan"}, time.Now()) + + // Validate the arguments + if args.Job == nil { + return fmt.Errorf("Job required for plan") + } + + // Initialize the job fields (sets defaults and any necessary init work). + args.Job.InitFields() + + // Validate the job. + if err := validateJob(args.Job); err != nil { + return err + } + + // Acquire a snapshot of the state + snap, err := j.srv.fsm.State().Snapshot() + if err != nil { + return err + } + + // Get the original job + oldJob, err := snap.JobByID(args.Job.ID) + if err != nil { + return err + } + + var index uint64 + var updatedIndex uint64 + if oldJob != nil { + index = oldJob.JobModifyIndex + updatedIndex = oldJob.JobModifyIndex + 1 + } + + // Insert the updated Job into the snapshot + snap.UpsertJob(updatedIndex, args.Job) + + // Create an eval and mark it as requiring annotations and insert that as well + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Priority: args.Job.Priority, + Type: args.Job.Type, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: args.Job.ID, + JobModifyIndex: updatedIndex, + Status: structs.EvalStatusPending, + AnnotatePlan: true, + } + + // Create an in-memory Planner that returns no errors and stores the + // submitted plan and created evals. + planner := &scheduler.Harness{ + State: &snap.StateStore, + } + + // Create the scheduler and run it + sched, err := scheduler.NewScheduler(eval.Type, j.srv.logger, snap, planner) + if err != nil { + return err + } + + if err := sched.Process(eval); err != nil { + return err + } + + // Annotate and store the diff + if plans := len(planner.Plans); plans != 1 { + return fmt.Errorf("scheduler resulted in an unexpected number of plans: %v", plans) + } + annotations := planner.Plans[0].Annotations + if args.Diff { + jobDiff, err := oldJob.Diff(args.Job, true) + if err != nil { + return fmt.Errorf("failed to create job diff: %v", err) + } + + if err := scheduler.Annotate(jobDiff, annotations); err != nil { + return fmt.Errorf("failed to annotate job diff: %v", err) + } + reply.Diff = jobDiff + } + + // Grab the failures + if len(planner.Evals) != 1 { + return fmt.Errorf("scheduler resulted in an unexpected number of eval updates: %v", planner.Evals) + } + updatedEval := planner.Evals[0] + + // If it is a periodic job calculate the next launch + if args.Job.IsPeriodic() && args.Job.Periodic.Enabled { + reply.NextPeriodicLaunch = args.Job.Periodic.Next(time.Now().UTC()) + } + + reply.FailedTGAllocs = updatedEval.FailedTGAllocs + reply.JobModifyIndex = index + reply.Annotations = annotations + reply.CreatedEvals = planner.CreateEvals + reply.Index = index + return nil +} + +// validateJob validates a Job and task drivers and returns an error if there is +// a validation problem or if the Job is of a type a user is not allowed to +// submit. +func validateJob(job *structs.Job) error { + validationErrors := new(multierror.Error) + if err := job.Validate(); err != nil { + multierror.Append(validationErrors, err) + } + + // Validate the driver configurations. + for _, tg := range job.TaskGroups { + for _, task := range tg.Tasks { + d, err := driver.NewDriver( + task.Driver, + driver.NewEmptyDriverContext(), + ) + if err != nil { + msg := "failed to create driver for task %q in group %q for validation: %v" + multierror.Append(validationErrors, fmt.Errorf(msg, tg.Name, task.Name, err)) + continue + } + + if err := d.Validate(task.Config); err != nil { + formatted := fmt.Errorf("group %q -> task %q -> config: %v", tg.Name, task.Name, err) + multierror.Append(validationErrors, formatted) + } + } + } + + if job.Type == structs.JobTypeCore { + multierror.Append(validationErrors, fmt.Errorf("job type cannot be core")) + } + + return validationErrors.ErrorOrNil() +} diff -Nru nomad-0.3.2+dfsg/nomad/job_endpoint_test.go nomad-0.4.0+dfsg/nomad/job_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/job_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/job_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -248,6 +248,118 @@ } } +func TestJobEndpoint_Register_EnforceIndex(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + testutil.WaitForLeader(t, s1.RPC) + + // Create the register request and enforcing an incorrect index + job := mock.Job() + req := &structs.JobRegisterRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: 100, // Not registered yet so not possible + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + var resp structs.JobRegisterResponse + err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp) + if err == nil || !strings.Contains(err.Error(), RegisterEnforceIndexErrPrefix) { + t.Fatalf("expected enforcement error") + } + + // Create the register request and enforcing it is new + req = &structs.JobRegisterRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: 0, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + if err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp); err != nil { + t.Fatalf("err: %v", err) + } + if resp.Index == 0 { + t.Fatalf("bad index: %d", resp.Index) + } + + curIndex := resp.JobModifyIndex + + // Check for the node in the FSM + state := s1.fsm.State() + out, err := state.JobByID(job.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("expected job") + } + if out.CreateIndex != resp.JobModifyIndex { + t.Fatalf("index mis-match") + } + + // Reregister request and enforcing it be a new job + req = &structs.JobRegisterRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: 0, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + err = msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp) + if err == nil || !strings.Contains(err.Error(), RegisterEnforceIndexErrPrefix) { + t.Fatalf("expected enforcement error") + } + + // Reregister request and enforcing it be at an incorrect index + req = &structs.JobRegisterRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: curIndex - 1, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + err = msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp) + if err == nil || !strings.Contains(err.Error(), RegisterEnforceIndexErrPrefix) { + t.Fatalf("expected enforcement error") + } + + // Reregister request and enforcing it be at the correct index + job.Priority = job.Priority + 1 + req = &structs.JobRegisterRequest{ + Job: job, + EnforceIndex: true, + JobModifyIndex: curIndex, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + if err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp); err != nil { + t.Fatalf("err: %v", err) + } + if resp.Index == 0 { + t.Fatalf("bad index: %d", resp.Index) + } + + out, err = state.JobByID(job.ID) + if err != nil { + t.Fatalf("err: %v", err) + } + if out == nil { + t.Fatalf("expected job") + } + if out.Priority != job.Priority { + t.Fatalf("priority mis-match") + } +} + func TestJobEndpoint_Evaluate(t *testing.T) { s1 := testServer(t, func(c *Config) { c.NumSchedulers = 0 // Prevent automatic dequeue @@ -914,3 +1026,107 @@ t.Fatalf("bad: %#v", resp2.Evaluations) } } + +func TestJobEndpoint_Plan_WithDiff(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + testutil.WaitForLeader(t, s1.RPC) + + // Create the register request + job := mock.Job() + req := &structs.JobRegisterRequest{ + Job: job, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + var resp structs.JobRegisterResponse + if err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp); err != nil { + t.Fatalf("err: %v", err) + } + if resp.Index == 0 { + t.Fatalf("bad index: %d", resp.Index) + } + + // Create a plan request + planReq := &structs.JobPlanRequest{ + Job: job, + Diff: true, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + var planResp structs.JobPlanResponse + if err := msgpackrpc.CallWithCodec(codec, "Job.Plan", planReq, &planResp); err != nil { + t.Fatalf("err: %v", err) + } + + // Check the response + if planResp.JobModifyIndex == 0 { + t.Fatalf("bad cas: %d", planResp.JobModifyIndex) + } + if planResp.Annotations == nil { + t.Fatalf("no annotations") + } + if planResp.Diff == nil { + t.Fatalf("no diff") + } + if len(planResp.FailedTGAllocs) == 0 { + t.Fatalf("no failed task group alloc metrics") + } +} + +func TestJobEndpoint_Plan_NoDiff(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 // Prevent automatic dequeue + }) + defer s1.Shutdown() + codec := rpcClient(t, s1) + testutil.WaitForLeader(t, s1.RPC) + + // Create the register request + job := mock.Job() + req := &structs.JobRegisterRequest{ + Job: job, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + var resp structs.JobRegisterResponse + if err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp); err != nil { + t.Fatalf("err: %v", err) + } + if resp.Index == 0 { + t.Fatalf("bad index: %d", resp.Index) + } + + // Create a plan request + planReq := &structs.JobPlanRequest{ + Job: job, + Diff: false, + WriteRequest: structs.WriteRequest{Region: "global"}, + } + + // Fetch the response + var planResp structs.JobPlanResponse + if err := msgpackrpc.CallWithCodec(codec, "Job.Plan", planReq, &planResp); err != nil { + t.Fatalf("err: %v", err) + } + + // Check the response + if planResp.JobModifyIndex == 0 { + t.Fatalf("bad cas: %d", planResp.JobModifyIndex) + } + if planResp.Annotations == nil { + t.Fatalf("no annotations") + } + if planResp.Diff != nil { + t.Fatalf("got diff") + } + if len(planResp.FailedTGAllocs) == 0 { + t.Fatalf("no failed task group alloc metrics") + } +} diff -Nru nomad-0.3.2+dfsg/nomad/leader.go nomad-0.4.0+dfsg/nomad/leader.go --- nomad-0.3.2+dfsg/nomad/leader.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/leader.go 2016-06-28 21:26:34.000000000 +0000 @@ -11,6 +11,13 @@ "github.com/hashicorp/serf/serf" ) +const ( + // failedEvalUnblockInterval is the interval at which failed evaluations are + // unblocked to re-enter the scheduler. A failed evaluation occurs under + // high contention when the schedulers plan does not make progress. + failedEvalUnblockInterval = 1 * time.Minute +) + // monitorLeadership is used to monitor if we acquire or lose our role // as the leader in the Raft cluster. There is some work the leader is // expected to do, so we must react to changes @@ -95,7 +102,7 @@ // establishLeadership is invoked once we become leader and are able // to invoke an initial barrier. The barrier is used to ensure any -// previously inflight transactions have been commited and that our +// previously inflight transactions have been committed and that our // state is up-to-date. func (s *Server) establishLeadership(stopCh chan struct{}) error { // Disable workers to free half the cores for use in the plan queue and @@ -143,6 +150,9 @@ // Reap any duplicate blocked evaluations go s.reapDupBlockedEvaluations(stopCh) + // Periodically unblock failed allocations + go s.periodicUnblockFailedEvals(stopCh) + // Setup the heartbeat timers. This is done both when starting up or when // a leader fail over happens. Since the timers are maintained by the leader // node, effectively this means all the timers are renewed at the time of failover. @@ -178,9 +188,7 @@ eval := raw.(*structs.Evaluation) if eval.ShouldEnqueue() { - if err := s.evalBroker.Enqueue(eval); err != nil { - return fmt.Errorf("failed to enqueue evaluation %s: %v", eval.ID, err) - } + s.evalBroker.Enqueue(eval) } else if eval.ShouldBlock() { s.blockedEvals.Block(eval) } @@ -243,14 +251,33 @@ jobGC := time.NewTicker(s.config.JobGCInterval) defer jobGC.Stop() + // getLatest grabs the latest index from the state store. It returns true if + // the index was retrieved successfully. + getLatest := func() (uint64, bool) { + snapshotIndex, err := s.fsm.State().LatestIndex() + if err != nil { + s.logger.Printf("[ERR] nomad: failed to determine state store's index: %v", err) + return 0, false + } + + return snapshotIndex, true + } + for { + select { case <-evalGC.C: - s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobEvalGC)) + if index, ok := getLatest(); ok { + s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobEvalGC, index)) + } case <-nodeGC.C: - s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobNodeGC)) + if index, ok := getLatest(); ok { + s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobNodeGC, index)) + } case <-jobGC.C: - s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobJobGC)) + if index, ok := getLatest(); ok { + s.evalBroker.Enqueue(s.coreJobEval(structs.CoreJobJobGC, index)) + } case <-stopCh: return } @@ -258,7 +285,7 @@ } // coreJobEval returns an evaluation for a core job -func (s *Server) coreJobEval(job string) *structs.Evaluation { +func (s *Server) coreJobEval(job string, modifyIndex uint64) *structs.Evaluation { return &structs.Evaluation{ ID: structs.GenerateUUID(), Priority: structs.CoreJobPriority, @@ -266,7 +293,7 @@ TriggeredBy: structs.EvalTriggerScheduled, JobID: job, Status: structs.EvalStatusPending, - ModifyIndex: s.raft.AppliedIndex(), + ModifyIndex: modifyIndex, } } @@ -342,6 +369,21 @@ } } } + +// periodicUnblockFailedEvals periodically unblocks failed, blocked evaluations. +func (s *Server) periodicUnblockFailedEvals(stopCh chan struct{}) { + ticker := time.NewTimer(failedEvalUnblockInterval) + defer ticker.Stop() + for { + select { + case <-stopCh: + return + case <-ticker.C: + // Unblock the failed allocations + s.blockedEvals.UnblockFailed() + } + } +} // revokeLeadership is invoked once we step down as leader. // This is used to cleanup any state that may be specific to a leader. diff -Nru nomad-0.3.2+dfsg/nomad/leader_test.go nomad-0.4.0+dfsg/nomad/leader_test.go --- nomad-0.3.2+dfsg/nomad/leader_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/leader_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -496,12 +496,7 @@ // Wait for a periodic dispatch eval := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval) // Dequeue and Nack out, token, err := s1.evalBroker.Dequeue(defaultSched, time.Second) diff -Nru nomad-0.3.2+dfsg/nomad/mock/mock.go nomad-0.4.0+dfsg/nomad/mock/mock.go --- nomad-0.3.2+dfsg/nomad/mock/mock.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/mock/mock.go 2016-06-28 21:26:34.000000000 +0000 @@ -127,6 +127,9 @@ }, }, }, + Meta: map[string]string{ + "foo": "bar", + }, }, }, Meta: map[string]string{ diff -Nru nomad-0.3.2+dfsg/nomad/node_endpoint.go nomad-0.4.0+dfsg/nomad/node_endpoint.go --- nomad-0.3.2+dfsg/nomad/node_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/node_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,6 +7,7 @@ "github.com/armon/go-metrics" "github.com/hashicorp/go-memdb" + "github.com/hashicorp/nomad/nomad/state" "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/nomad/nomad/watch" ) @@ -101,11 +102,58 @@ // Set the reply index reply.Index = index + snap, err := n.srv.fsm.State().Snapshot() + if err != nil { + return err + } + + n.srv.peerLock.RLock() + defer n.srv.peerLock.RUnlock() + if err := n.constructNodeServerInfoResponse(snap, reply); err != nil { + n.srv.logger.Printf("[ERR] nomad.client: failed to populate NodeUpdateResponse: %v", err) + return err + } + + return nil +} + +// updateNodeUpdateResponse assumes the n.srv.peerLock is held for reading. +func (n *Node) constructNodeServerInfoResponse(snap *state.StateSnapshot, reply *structs.NodeUpdateResponse) error { + reply.LeaderRPCAddr = n.srv.raft.Leader() + + // Reply with config information required for future RPC requests + reply.Servers = make([]*structs.NodeServerInfo, 0, len(n.srv.localPeers)) + for k, v := range n.srv.localPeers { + reply.Servers = append(reply.Servers, + &structs.NodeServerInfo{ + RPCAdvertiseAddr: k, + RPCMajorVersion: int32(v.MajorVersion), + RPCMinorVersion: int32(v.MinorVersion), + Datacenter: v.Datacenter, + }) + } + + // TODO(sean@): Use an indexed node count instead + // + // Snapshot is used only to iterate over all nodes to create a node + // count to send back to Nomad Clients in their heartbeat so Clients + // can estimate the size of the cluster. + iter, err := snap.Nodes() + if err == nil { + for { + raw := iter.Next() + if raw == nil { + break + } + reply.NumNodes++ + } + } + return nil } // Deregister is used to remove a client from the client. If a client should -// just be made unavailable for scheduling, a status update is prefered. +// just be made unavailable for scheduling, a status update is preferred. func (n *Node) Deregister(args *structs.NodeDeregisterRequest, reply *structs.NodeUpdateResponse) error { if done, err := n.srv.forward("Node.Deregister", args, args, reply); done { return err @@ -205,8 +253,15 @@ reply.HeartbeatTTL = ttl } - // Set the reply index + // Set the reply index and leader reply.Index = index + n.srv.peerLock.RLock() + defer n.srv.peerLock.RUnlock() + if err := n.constructNodeServerInfoResponse(snap, reply); err != nil { + n.srv.logger.Printf("[ERR] nomad.client: failed to populate NodeUpdateResponse: %v", err) + return err + } + return nil } @@ -298,6 +353,13 @@ // Set the reply index reply.Index = evalIndex + + n.srv.peerLock.RLock() + defer n.srv.peerLock.RUnlock() + if err := n.constructNodeServerInfoResponse(snap, reply); err != nil { + n.srv.logger.Printf("[ERR] nomad.client: failed to populate NodeUpdateResponse: %v", err) + return err + } return nil } diff -Nru nomad-0.3.2+dfsg/nomad/node_endpoint_test.go nomad-0.4.0+dfsg/nomad/node_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/node_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/node_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -237,6 +237,28 @@ func TestClientEndpoint_UpdateStatus_HeartbeatOnly(t *testing.T) { s1 := testServer(t, nil) defer s1.Shutdown() + + s2 := testServer(t, func(c *Config) { + c.DevDisableBootstrap = true + }) + defer s2.Shutdown() + + s3 := testServer(t, func(c *Config) { + c.DevDisableBootstrap = true + }) + defer s3.Shutdown() + servers := []*Server{s1, s2, s3} + testJoin(t, s1, s2, s3) + + for _, s := range servers { + testutil.WaitForResult(func() (bool, error) { + peers, _ := s.raftPeers.Peers() + return len(peers) == 3, nil + }, func(err error) { + t.Fatalf("should have 3 peers") + }) + } + codec := rpcClient(t, s1) testutil.WaitForLeader(t, s1.RPC) @@ -259,6 +281,12 @@ t.Fatalf("bad: %#v", ttl) } + // Check for heartbeat servers + serverAddrs := resp.Servers + if len(serverAddrs) == 0 { + t.Fatalf("bad: %#v", serverAddrs) + } + // Update the status, static state dereg := &structs.NodeUpdateStatusRequest{ NodeID: node.ID, diff -Nru nomad-0.3.2+dfsg/nomad/periodic.go nomad-0.4.0+dfsg/nomad/periodic.go --- nomad-0.3.2+dfsg/nomad/periodic.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/periodic.go 2016-06-28 21:26:34.000000000 +0000 @@ -81,7 +81,11 @@ // RunningChildren checks whether the passed job has any running children. func (s *Server) RunningChildren(job *structs.Job) (bool, error) { - state := s.fsm.State() + state, err := s.fsm.State().Snapshot() + if err != nil { + return false, err + } + prefix := fmt.Sprintf("%s%s", job.ID, structs.PeriodicLaunchSuffix) iter, err := state.JobsByIDPrefix(prefix) if err != nil { @@ -272,11 +276,13 @@ // Do nothing if not enabled if !p.enabled { + p.l.Unlock() return nil, fmt.Errorf("periodic dispatch disabled") } job, tracked := p.tracked[jobID] if !tracked { + p.l.Unlock() return nil, fmt.Errorf("can't force run non-tracked job %v", jobID) } diff -Nru nomad-0.3.2+dfsg/nomad/plan_apply.go nomad-0.4.0+dfsg/nomad/plan_apply.go --- nomad-0.3.2+dfsg/nomad/plan_apply.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/plan_apply.go 2016-06-28 21:26:34.000000000 +0000 @@ -124,7 +124,6 @@ // are multiple updates per node minUpdates := len(result.NodeUpdate) minUpdates += len(result.NodeAllocation) - minUpdates += len(result.FailedAllocs) // Setup the update request req := structs.AllocUpdateRequest{ @@ -137,7 +136,6 @@ for _, allocList := range result.NodeAllocation { req.Alloc = append(req.Alloc, allocList...) } - req.Alloc = append(req.Alloc, result.FailedAllocs...) // Set the time the alloc was applied for the first time. This can be used // to approximate the scheduling time. @@ -200,7 +198,6 @@ result := &structs.PlanResult{ NodeUpdate: make(map[string][]*structs.Allocation), NodeAllocation: make(map[string][]*structs.Allocation), - FailedAllocs: plan.FailedAllocs, } // Collect all the nodeIDs diff -Nru nomad-0.3.2+dfsg/nomad/plan_apply_test.go nomad-0.4.0+dfsg/nomad/plan_apply_test.go --- nomad-0.3.2+dfsg/nomad/plan_apply_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/plan_apply_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -51,12 +51,10 @@ // Register alloc alloc := mock.Alloc() - allocFail := mock.Alloc() plan := &structs.PlanResult{ NodeAllocation: map[string][]*structs.Allocation{ node.ID: []*structs.Allocation{alloc}, }, - FailedAllocs: []*structs.Allocation{allocFail}, } // Snapshot the state @@ -94,15 +92,6 @@ t.Fatalf("missing alloc") } - // Lookup the allocation - out, err = s1.fsm.State().AllocByID(allocFail.ID) - if err != nil { - t.Fatalf("err: %v", err) - } - if out == nil { - t.Fatalf("missing alloc") - } - // Evict alloc, Register alloc2 allocEvict := new(structs.Allocation) *allocEvict = *alloc @@ -178,12 +167,10 @@ snap, _ := state.Snapshot() alloc := mock.Alloc() - allocFail := mock.Alloc() plan := &structs.Plan{ NodeAllocation: map[string][]*structs.Allocation{ node.ID: []*structs.Allocation{alloc}, }, - FailedAllocs: []*structs.Allocation{allocFail}, } pool := NewEvaluatePool(workerPoolSize, workerPoolBufferSize) @@ -196,8 +183,8 @@ if result == nil { t.Fatalf("missing result") } - if !reflect.DeepEqual(result.FailedAllocs, plan.FailedAllocs) { - t.Fatalf("missing failed allocs") + if !reflect.DeepEqual(result.NodeAllocation, plan.NodeAllocation) { + t.Fatalf("incorrect node allocations") } } diff -Nru nomad-0.3.2+dfsg/nomad/plan_endpoint_test.go nomad-0.4.0+dfsg/nomad/plan_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/plan_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/plan_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -20,12 +20,8 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) + evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) if err != nil { t.Fatalf("err: %v", err) diff -Nru nomad-0.3.2+dfsg/nomad/pool.go nomad-0.4.0+dfsg/nomad/pool.go --- nomad-0.3.2+dfsg/nomad/pool.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/pool.go 2016-06-28 21:26:34.000000000 +0000 @@ -12,6 +12,7 @@ "github.com/hashicorp/consul/tlsutil" "github.com/hashicorp/net-rpc-msgpackrpc" + "github.com/hashicorp/nomad/client/rpcproxy" "github.com/hashicorp/yamux" ) @@ -373,6 +374,30 @@ return nil } +// PingNomadServer sends a Status.Ping message to the specified server and +// returns true if healthy, false if an error occurred +func (p *ConnPool) PingNomadServer(region string, apiMajorVersion int, s *rpcproxy.ServerEndpoint) (bool, error) { + // Get a usable client + conn, sc, err := p.getClient(region, s.Addr, apiMajorVersion) + if err != nil { + return false, err + } + + // Make the RPC call + var out struct{} + err = msgpackrpc.CallWithCodec(sc.codec, "Status.Ping", struct{}{}, &out) + if err != nil { + sc.Close() + p.releaseConn(conn) + return false, err + } + + // Done with the connection + conn.returnClient(sc) + p.releaseConn(conn) + return true, nil +} + // Reap is used to close conns open over maxTime func (p *ConnPool) reap() { for { diff -Nru nomad-0.3.2+dfsg/nomad/rpc.go nomad-0.4.0+dfsg/nomad/rpc.go --- nomad-0.3.2+dfsg/nomad/rpc.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/rpc.go 2016-06-28 21:26:34.000000000 +0000 @@ -11,6 +11,7 @@ "time" "github.com/armon/go-metrics" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/net-rpc-msgpackrpc" "github.com/hashicorp/nomad/nomad/state" "github.com/hashicorp/nomad/nomad/structs" @@ -215,7 +216,7 @@ if server == nil { return structs.ErrNoLeader } - return s.connPool.RPC(s.config.Region, server.Addr, server.Version, method, args, reply) + return s.connPool.RPC(s.config.Region, server.Addr, server.MajorVersion, method, args, reply) } // forwardRegion is used to forward an RPC call to a remote region, or fail if no servers @@ -231,13 +232,13 @@ } // Select a random addr - offset := rand.Int31() % int32(len(servers)) + offset := rand.Intn(len(servers)) server := servers[offset] s.peerLock.RUnlock() // Forward to remote Nomad metrics.IncrCounter([]string{"nomad", "rpc", "cross-region", region}, 1) - return s.connPool.RPC(region, server.Addr, server.Version, method, args, reply) + return s.connPool.RPC(region, server.Addr, server.MajorVersion, method, args, reply) } // raftApplyFuture is used to encode a message, run it through raft, and return the Raft future. @@ -308,7 +309,7 @@ } // Apply a small amount of jitter to the request - opts.queryOpts.MaxQueryTime += randomStagger(opts.queryOpts.MaxQueryTime / jitterFraction) + opts.queryOpts.MaxQueryTime += lib.RandomStagger(opts.queryOpts.MaxQueryTime / jitterFraction) // Setup a query timeout timeout = time.NewTimer(opts.queryOpts.MaxQueryTime) diff -Nru nomad-0.3.2+dfsg/nomad/serf.go nomad-0.4.0+dfsg/nomad/serf.go --- nomad-0.3.2+dfsg/nomad/serf.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/serf.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,6 +1,10 @@ package nomad -import "github.com/hashicorp/serf/serf" +import ( + "sync/atomic" + + "github.com/hashicorp/serf/serf" +) const ( // StatusReap is used to update the status of a node if we @@ -66,13 +70,13 @@ s.peerLock.Unlock() // If we still expecting to bootstrap, may need to handle this - if s.config.BootstrapExpect != 0 { + if atomic.LoadInt32(&s.config.BootstrapExpect) != 0 { s.maybeBootstrap() } } } -// maybeBootsrap is used to handle bootstrapping when a new consul server joins +// maybeBootsrap is used to handle bootstrapping when a new server joins func (s *Server) maybeBootstrap() { var index uint64 var err error @@ -91,7 +95,7 @@ // Bootstrap can only be done if there are no committed logs, // remove our expectations of bootstrapping if index != 0 { - s.config.BootstrapExpect = 0 + atomic.StoreInt32(&s.config.BootstrapExpect, 0) return } @@ -106,7 +110,7 @@ if p.Region != s.config.Region { continue } - if p.Expect != 0 && p.Expect != s.config.BootstrapExpect { + if p.Expect != 0 && p.Expect != int(atomic.LoadInt32(&s.config.BootstrapExpect)) { s.logger.Printf("[ERR] nomad: peer %v has a conflicting expect value. All nodes should expect the same number.", member) return } @@ -118,7 +122,7 @@ } // Skip if we haven't met the minimum expect count - if len(addrs) < s.config.BootstrapExpect { + if len(addrs) < int(atomic.LoadInt32(&s.config.BootstrapExpect)) { return } @@ -128,8 +132,8 @@ s.logger.Printf("[ERR] nomad: failed to bootstrap peers: %v", err) } - // Bootstrapping comlete, don't enter this again - s.config.BootstrapExpect = 0 + // Bootstrapping complete, don't enter this again + atomic.StoreInt32(&s.config.BootstrapExpect, 0) } // nodeFailed is used to handle fail events on the serf cluster diff -Nru nomad-0.3.2+dfsg/nomad/server.go nomad-0.4.0+dfsg/nomad/server.go --- nomad-0.3.2+dfsg/nomad/server.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/server.go 2016-06-28 21:26:34.000000000 +0000 @@ -7,23 +7,44 @@ "log" "net" "net/rpc" - "os" "path/filepath" "reflect" "sort" "strconv" "strings" "sync" + "sync/atomic" "time" + consulapi "github.com/hashicorp/consul/api" + "github.com/hashicorp/consul/lib" "github.com/hashicorp/consul/tlsutil" + "github.com/hashicorp/go-multierror" + "github.com/hashicorp/nomad/command/agent/consul" "github.com/hashicorp/nomad/nomad/state" + "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/raft" "github.com/hashicorp/raft-boltdb" "github.com/hashicorp/serf/serf" ) const ( + // datacenterQueryLimit sets the max number of DCs that a Nomad + // Server will query to find bootstrap_expect servers. + datacenterQueryLimit = 25 + + // maxStaleLeadership is the maximum time we will permit this Nomad + // Server to go without seeing a valid Raft leader. + maxStaleLeadership = 15 * time.Second + + // peersPollInterval is used as the polling interval between attempts + // to query Consul for Nomad Servers. + peersPollInterval = 45 * time.Second + + // peersPollJitter is used to provide a slight amount of variance to + // the retry interval when querying Consul Servers + peersPollJitterFactor = 2 + raftState = "raft/" serfSnapshot = "serf/snapshot" snapshotsRetained = 2 @@ -35,23 +56,12 @@ serverMaxStreams = 64 // raftLogCacheSize is the maximum number of logs to cache in-memory. - // This is used to reduce disk I/O for the recently commited entries. + // This is used to reduce disk I/O for the recently committed entries. raftLogCacheSize = 512 // raftRemoveGracePeriod is how long we wait to allow a RemovePeer // to replicate to gracefully leave the cluster. raftRemoveGracePeriod = 5 * time.Second - - // apiMajorVersion is returned as part of the Status.Version request. - // It should be incremented anytime the APIs are changed in a way that - // would break clients for sane client versioning. - apiMajorVersion = 1 - - // apiMinorVersion is returned as part of the Status.Version request. - // It should be incremented anytime the APIs are changed to allow - // for sane client versioning. Minor changes should be compatible - // within the major version. - apiMinorVersion = 1 ) // Server is Nomad server which manages the job queues, @@ -126,6 +136,9 @@ heartbeatTimers map[string]*time.Timer heartbeatTimersLock sync.Mutex + // consulSyncer advertises this Nomad Agent with Consul + consulSyncer *consul.Syncer + // Worker used for processing workers []*Worker @@ -150,20 +163,12 @@ // NewServer is used to construct a new Nomad server from the // configuration, potentially returning an error -func NewServer(config *Config) (*Server, error) { +func NewServer(config *Config, consulSyncer *consul.Syncer, logger *log.Logger) (*Server, error) { // Check the protocol version if err := config.CheckVersion(); err != nil { return nil, err } - // Ensure we have a log output - if config.LogOutput == nil { - config.LogOutput = os.Stderr - } - - // Create a logger - logger := log.New(config.LogOutput, "", log.LstdFlags) - // Create an eval broker evalBroker, err := NewEvalBroker(config.EvalNackTimeout, config.EvalDeliveryLimit) if err != nil { @@ -182,6 +187,7 @@ // Create the server s := &Server{ config: config, + consulSyncer: consulSyncer, connPool: NewPool(config.LogOutput, serverRPCCache, serverMaxStreams, nil), logger: logger, rpcServer: rpc.NewServer(), @@ -202,14 +208,14 @@ // TODO: TLS... if err := s.setupRPC(nil); err != nil { s.Shutdown() - logger.Printf("[ERR] nomad: failed to start RPC layer: %s", err) + s.logger.Printf("[ERR] nomad: failed to start RPC layer: %s", err) return nil, fmt.Errorf("Failed to start RPC layer: %v", err) } // Initialize the Raft server if err := s.setupRaft(); err != nil { s.Shutdown() - logger.Printf("[ERR] nomad: failed to start Raft: %s", err) + s.logger.Printf("[ERR] nomad: failed to start Raft: %s", err) return nil, fmt.Errorf("Failed to start Raft: %v", err) } @@ -217,17 +223,22 @@ s.serf, err = s.setupSerf(config.SerfConfig, s.eventCh, serfSnapshot) if err != nil { s.Shutdown() - logger.Printf("[ERR] nomad: failed to start serf WAN: %s", err) + s.logger.Printf("[ERR] nomad: failed to start serf WAN: %s", err) return nil, fmt.Errorf("Failed to start serf: %v", err) } - // Intialize the scheduling workers + // Initialize the scheduling workers if err := s.setupWorkers(); err != nil { s.Shutdown() - logger.Printf("[ERR] nomad: failed to start workers: %s", err) + s.logger.Printf("[ERR] nomad: failed to start workers: %s", err) return nil, fmt.Errorf("Failed to start workers: %v", err) } + // Setup the Consul syncer + if err := s.setupConsulSyncer(); err != nil { + return nil, fmt.Errorf("failed to create server Consul syncer: %v") + } + // Monitor leadership changes go s.monitorLeadership() @@ -249,11 +260,6 @@ // Emit metrics go s.heartbeatStats() - // Seed the global random. - if err := seedRandom(); err != nil { - return nil, err - } - // Done return s, nil } @@ -371,6 +377,178 @@ return nil } +// setupBootstrapHandler() creates the closure necessary to support a Consul +// fallback handler. +func (s *Server) setupBootstrapHandler() error { + // peersTimeout is used to indicate to the Consul Syncer that the + // current Nomad Server has a stale peer set. peersTimeout will time + // out if the Consul Syncer bootstrapFn has not observed a Raft + // leader in maxStaleLeadership. If peersTimeout has been triggered, + // the Consul Syncer will begin querying Consul for other Nomad + // Servers. + // + // NOTE: time.Timer is used vs time.Time in order to handle clock + // drift because time.Timer is implemented as a monotonic clock. + var peersTimeout *time.Timer = time.NewTimer(0) + + // consulQueryCount is the number of times the bootstrapFn has been + // called, regardless of success. + var consulQueryCount uint64 + + // leadershipTimedOut is a helper method that returns true if the + // peersTimeout timer has expired. + leadershipTimedOut := func() bool { + select { + case <-peersTimeout.C: + return true + default: + return false + } + } + + // The bootstrapFn callback handler is used to periodically poll + // Consul to look up the Nomad Servers in Consul. In the event the + // server has been brought up without a `retry-join` configuration + // and this Server is partitioned from the rest of the cluster, + // periodically poll Consul to reattach this Server to other servers + // in the same region and automatically reform a quorum (assuming the + // correct number of servers required for quorum are present). + bootstrapFn := func() error { + // If there is a raft leader, do nothing + if s.raft.Leader() != "" { + peersTimeout.Reset(maxStaleLeadership) + return nil + } + + // (ab)use serf.go's behavior of setting BootstrapExpect to + // zero if we have bootstrapped. If we have bootstrapped + bootstrapExpect := atomic.LoadInt32(&s.config.BootstrapExpect) + if bootstrapExpect == 0 { + // This Nomad Server has been bootstrapped. Rely on + // the peersTimeout firing as a guard to prevent + // aggressive querying of Consul. + if !leadershipTimedOut() { + return nil + } + } else { + if consulQueryCount > 0 && !leadershipTimedOut() { + return nil + } + + // This Nomad Server has not been bootstrapped, reach + // out to Consul if our peer list is less than + // `bootstrap_expect`. + raftPeers, err := s.raftPeers.Peers() + if err != nil { + peersTimeout.Reset(peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor)) + return nil + } + + // The necessary number of Nomad Servers required for + // quorum has been reached, we do not need to poll + // Consul. Let the normal timeout-based strategy + // take over. + if len(raftPeers) >= int(bootstrapExpect) { + peersTimeout.Reset(peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor)) + return nil + } + } + consulQueryCount++ + + s.logger.Printf("[DEBUG] server.consul: lost contact with Nomad quorum, falling back to Consul for server list") + + consulCatalog := s.consulSyncer.ConsulClient().Catalog() + dcs, err := consulCatalog.Datacenters() + if err != nil { + peersTimeout.Reset(peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor)) + return fmt.Errorf("server.consul: unable to query Consul datacenters: %v", err) + } + if len(dcs) > 2 { + // Query the local DC first, then shuffle the + // remaining DCs. If additional calls to bootstrapFn + // are necessary, this Nomad Server will eventually + // walk all datacenter until it finds enough hosts to + // form a quorum. + shuffleStrings(dcs[1:]) + dcs = dcs[0:lib.MinInt(len(dcs), datacenterQueryLimit)] + } + + nomadServerServiceName := s.config.ConsulConfig.ServerServiceName + var mErr multierror.Error + const defaultMaxNumNomadServers = 8 + nomadServerServices := make([]string, 0, defaultMaxNumNomadServers) + localNode := s.serf.Memberlist().LocalNode() + for _, dc := range dcs { + consulOpts := &consulapi.QueryOptions{ + AllowStale: true, + Datacenter: dc, + Near: "_agent", + WaitTime: consul.DefaultQueryWaitDuration, + } + consulServices, _, err := consulCatalog.Service(nomadServerServiceName, consul.ServiceTagSerf, consulOpts) + if err != nil { + err := fmt.Errorf("failed to query service %q in Consul datacenter %q: %v", nomadServerServiceName, dc, err) + s.logger.Printf("[WARN] server.consul: %v", err) + mErr.Errors = append(mErr.Errors, err) + continue + } + + for _, cs := range consulServices { + port := strconv.FormatInt(int64(cs.ServicePort), 10) + addr := cs.ServiceAddress + if addr == "" { + addr = cs.Address + } + if localNode.Addr.String() == addr && int(localNode.Port) == cs.ServicePort { + continue + } + serverAddr := net.JoinHostPort(addr, port) + nomadServerServices = append(nomadServerServices, serverAddr) + } + } + + if len(nomadServerServices) == 0 { + if len(mErr.Errors) > 0 { + peersTimeout.Reset(peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor)) + return mErr.ErrorOrNil() + } + + // Log the error and return nil so future handlers + // can attempt to register the `nomad` service. + pollInterval := peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor) + s.logger.Printf("[TRACE] server.consul: no Nomad Servers advertising service %+q in Consul datacenters %+q, sleeping for %v", nomadServerServiceName, dcs, pollInterval) + peersTimeout.Reset(pollInterval) + return nil + } + + numServersContacted, err := s.Join(nomadServerServices) + if err != nil { + peersTimeout.Reset(peersPollInterval + lib.RandomStagger(peersPollInterval/peersPollJitterFactor)) + return fmt.Errorf("contacted %d Nomad Servers: %v", numServersContacted, err) + } + + peersTimeout.Reset(maxStaleLeadership) + s.logger.Printf("[INFO] server.consul: successfully contacted %d Nomad Servers", numServersContacted) + + return nil + } + + s.consulSyncer.AddPeriodicHandler("Nomad Server Fallback Server Handler", bootstrapFn) + return nil +} + +// setupConsulSyncer creates Server-mode consul.Syncer which periodically +// executes callbacks on a fixed interval. +func (s *Server) setupConsulSyncer() error { + if s.config.ConsulConfig.ServerAutoJoin { + if err := s.setupBootstrapHandler(); err != nil { + return err + } + } + + return nil +} + // setupRPC is used to setup the RPC listener func (s *Server) setupRPC(tlsWrap tlsutil.DCWrapper) error { // Create endpoints @@ -539,16 +717,16 @@ conf.Tags["role"] = "nomad" conf.Tags["region"] = s.config.Region conf.Tags["dc"] = s.config.Datacenter - conf.Tags["vsn"] = fmt.Sprintf("%d", s.config.ProtocolVersion) - conf.Tags["vsn_min"] = fmt.Sprintf("%d", ProtocolVersionMin) - conf.Tags["vsn_max"] = fmt.Sprintf("%d", ProtocolVersionMax) + conf.Tags["vsn"] = fmt.Sprintf("%d", structs.ApiMajorVersion) + conf.Tags["mvn"] = fmt.Sprintf("%d", structs.ApiMinorVersion) conf.Tags["build"] = s.config.Build conf.Tags["port"] = fmt.Sprintf("%d", s.rpcAdvertise.(*net.TCPAddr).Port) if s.config.Bootstrap || (s.config.DevMode && !s.config.DevDisableBootstrap) { conf.Tags["bootstrap"] = "1" } - if s.config.BootstrapExpect != 0 { - conf.Tags["expect"] = fmt.Sprintf("%d", s.config.BootstrapExpect) + bootstrapExpect := atomic.LoadInt32(&s.config.BootstrapExpect) + if bootstrapExpect != 0 { + conf.Tags["expect"] = fmt.Sprintf("%d", bootstrapExpect) } conf.MemberlistConfig.LogOutput = s.config.LogOutput conf.LogOutput = s.config.LogOutput diff -Nru nomad-0.3.2+dfsg/nomad/server_test.go nomad-0.4.0+dfsg/nomad/server_test.go --- nomad-0.3.2+dfsg/nomad/server_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/server_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -3,15 +3,20 @@ import ( "fmt" "io/ioutil" + "log" "net" "sync/atomic" "testing" "time" + "github.com/hashicorp/nomad/command/agent/consul" "github.com/hashicorp/nomad/testutil" ) -var nextPort uint32 = 15000 +var ( + nextPort uint32 = 15000 + nodeNumber uint32 = 0 +) func getPort() int { return int(atomic.AddUint32(&nextPort, 1)) @@ -34,7 +39,8 @@ IP: []byte{127, 0, 0, 1}, Port: getPort(), } - config.NodeName = fmt.Sprintf("Node %d", config.RPCAddr.Port) + nodeNum := atomic.AddUint32(&nodeNumber, 1) + config.NodeName = fmt.Sprintf("nomad-%03d", nodeNum) // Tighten the Serf timing config.SerfConfig.MemberlistConfig.BindAddr = "127.0.0.1" @@ -59,8 +65,15 @@ // Enable raft as leader if we have bootstrap on config.RaftConfig.StartAsLeader = !config.DevDisableBootstrap + shutdownCh := make(chan struct{}) + logger := log.New(config.LogOutput, "", log.LstdFlags) + consulSyncer, err := consul.NewSyncer(config.ConsulConfig, shutdownCh, logger) + if err != nil { + t.Fatalf("err: %v", err) + } + // Create server - server, err := NewServer(config) + server, err := NewServer(config, consulSyncer, logger) if err != nil { t.Fatalf("err: %v", err) } diff -Nru nomad-0.3.2+dfsg/nomad/state/state_store.go nomad-0.4.0+dfsg/nomad/state/state_store.go --- nomad-0.3.2+dfsg/nomad/state/state_store.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/state/state_store.go 2016-06-28 21:26:34.000000000 +0000 @@ -972,6 +972,32 @@ return iter, nil } +// LastIndex returns the greatest index value for all indexes +func (s *StateStore) LatestIndex() (uint64, error) { + indexes, err := s.Indexes() + if err != nil { + return 0, err + } + + var max uint64 = 0 + for { + raw := indexes.Next() + if raw == nil { + break + } + + // Prepare the request struct + idx := raw.(*IndexEntry) + + // Determine the max + if idx.Value > max { + max = idx.Value + } + } + + return max, nil +} + // Index finds the matching index value func (s *StateStore) Index(name string) (uint64, error) { txn := s.db.Txn(false) diff -Nru nomad-0.3.2+dfsg/nomad/state/state_store_test.go nomad-0.4.0+dfsg/nomad/state/state_store_test.go --- nomad-0.3.2+dfsg/nomad/state/state_store_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/state/state_store_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -586,6 +586,9 @@ } iter, err = state.JobsByPeriodic(false) + if err != nil { + t.Fatalf("err: %v", err) + } var outNonPeriodic []*structs.Job for { @@ -1019,6 +1022,28 @@ } } +func TestStateStore_LatestIndex(t *testing.T) { + state := testStateStore(t) + + if err := state.UpsertNode(1000, mock.Node()); err != nil { + t.Fatalf("err: %v", err) + } + + exp := uint64(2000) + if err := state.UpsertJob(exp, mock.Job()); err != nil { + t.Fatalf("err: %v", err) + } + + latest, err := state.LatestIndex() + if err != nil { + t.Fatalf("err: %v", err) + } + + if latest != exp { + t.Fatalf("LatestIndex() returned %d; want %d", latest, exp) + } +} + func TestStateStore_RestoreIndex(t *testing.T) { state := testStateStore(t) diff -Nru nomad-0.3.2+dfsg/nomad/status_endpoint.go nomad-0.4.0+dfsg/nomad/status_endpoint.go --- nomad-0.3.2+dfsg/nomad/status_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/status_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -18,8 +18,8 @@ reply.Build = conf.Build reply.Versions = map[string]int{ structs.ProtocolVersion: int(conf.ProtocolVersion), - structs.APIMajorVersion: apiMajorVersion, - structs.APIMinorVersion: apiMinorVersion, + structs.APIMajorVersion: structs.ApiMajorVersion, + structs.APIMinorVersion: structs.ApiMinorVersion, } return nil } diff -Nru nomad-0.3.2+dfsg/nomad/status_endpoint_test.go nomad-0.4.0+dfsg/nomad/status_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/status_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/status_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -30,10 +30,10 @@ if out.Versions[structs.ProtocolVersion] != ProtocolVersionMax { t.Fatalf("bad: %#v", out) } - if out.Versions[structs.APIMajorVersion] != apiMajorVersion { + if out.Versions[structs.APIMajorVersion] != structs.ApiMajorVersion { t.Fatalf("bad: %#v", out) } - if out.Versions[structs.APIMinorVersion] != apiMinorVersion { + if out.Versions[structs.APIMinorVersion] != structs.ApiMinorVersion { t.Fatalf("bad: %#v", out) } } diff -Nru nomad-0.3.2+dfsg/nomad/structs/config/consul.go nomad-0.4.0+dfsg/nomad/structs/config/consul.go --- nomad-0.3.2+dfsg/nomad/structs/config/consul.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/config/consul.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,190 @@ +package config + +import ( + "crypto/tls" + "fmt" + "net/http" + "strings" + "time" + + consul "github.com/hashicorp/consul/api" +) + +// ConsulConfig contains the configuration information necessary to +// communicate with a Consul Agent in order to: +// +// - Register services and their checks with Consul +// +// - Bootstrap this Nomad Client with the list of Nomad Servers registered +// with Consul +// +// Both the Agent and the executor need to be able to import ConsulConfig. +type ConsulConfig struct { + // ServerServiceName is the name of the service that Nomad uses to register + // servers with Consul + ServerServiceName string `mapstructure:"server_service_name"` + + // ClientServiceName is the name of the service that Nomad uses to register + // clients with Consul + ClientServiceName string `mapstructure:"client_service_name"` + + // AutoAdvertise determines if this Nomad Agent will advertise its + // services via Consul. When true, Nomad Agent will register + // services with Consul. + AutoAdvertise bool `mapstructure:"auto_advertise"` + + // Addr is the address of the local Consul agent + Addr string `mapstructure:"address"` + + // Timeout is used by Consul HTTP Client + Timeout time.Duration `mapstructure:"timeout"` + + // Token is used to provide a per-request ACL token. This options overrides + // the agent's default token + Token string `mapstructure:"token"` + + // Auth is the information to use for http access to Consul agent + Auth string `mapstructure:"auth"` + + // EnableSSL sets the transport scheme to talk to the Consul agent as https + EnableSSL bool `mapstructure:"ssl"` + + // VerifySSL enables or disables SSL verification when the transport scheme + // for the consul api client is https + VerifySSL bool `mapstructure:"verify_ssl"` + + // CAFile is the path to the ca certificate used for Consul communication + CAFile string `mapstructure:"ca_file"` + + // CertFile is the path to the certificate for Consul communication + CertFile string `mapstructure:"cert_file"` + + // KeyFile is the path to the private key for Consul communication + KeyFile string `mapstructure:"key_file"` + + // ServerAutoJoin enables Nomad servers to find peers by querying Consul and + // joining them + ServerAutoJoin bool `mapstructure:"server_auto_join"` + + // ClientAutoJoin enables Nomad servers to find addresses of Nomad servers + // and register with them + ClientAutoJoin bool `mapstructure:"client_auto_join"` +} + +// DefaultConsulConfig() returns the canonical defaults for the Nomad +// `consul` configuration. +func DefaultConsulConfig() *ConsulConfig { + return &ConsulConfig{ + ServerServiceName: "nomad", + ClientServiceName: "nomad-client", + AutoAdvertise: true, + ServerAutoJoin: true, + ClientAutoJoin: true, + Timeout: 5 * time.Second, + } +} + +// Merge merges two Consul Configurations together. +func (a *ConsulConfig) Merge(b *ConsulConfig) *ConsulConfig { + result := *a + + if b.ServerServiceName != "" { + result.ServerServiceName = b.ServerServiceName + } + if b.ClientServiceName != "" { + result.ClientServiceName = b.ClientServiceName + } + if b.AutoAdvertise { + result.AutoAdvertise = true + } + if b.Addr != "" { + result.Addr = b.Addr + } + if b.Timeout != 0 { + result.Timeout = b.Timeout + } + if b.Token != "" { + result.Token = b.Token + } + if b.Auth != "" { + result.Auth = b.Auth + } + if b.EnableSSL { + result.EnableSSL = true + } + if b.VerifySSL { + result.VerifySSL = true + } + if b.CAFile != "" { + result.CAFile = b.CAFile + } + if b.CertFile != "" { + result.CertFile = b.CertFile + } + if b.KeyFile != "" { + result.KeyFile = b.KeyFile + } + if b.ServerAutoJoin { + result.ServerAutoJoin = true + } + if b.ClientAutoJoin { + result.ClientAutoJoin = true + } + return &result +} + +// ApiConfig() returns a usable Consul config that can be passed directly to +// hashicorp/consul/api. NOTE: datacenter is not set +func (c *ConsulConfig) ApiConfig() (*consul.Config, error) { + config := consul.DefaultConfig() + if c.Addr != "" { + config.Address = c.Addr + } + if c.Token != "" { + config.Token = c.Token + } + if c.Timeout != 0 { + config.HttpClient.Timeout = c.Timeout + } + if c.Auth != "" { + var username, password string + if strings.Contains(c.Auth, ":") { + split := strings.SplitN(c.Auth, ":", 2) + username = split[0] + password = split[1] + } else { + username = c.Auth + } + + config.HttpAuth = &consul.HttpBasicAuth{ + Username: username, + Password: password, + } + } + if c.EnableSSL { + config.Scheme = "https" + tlsConfig := consul.TLSConfig{ + Address: config.Address, + CAFile: c.CAFile, + CertFile: c.CertFile, + KeyFile: c.KeyFile, + InsecureSkipVerify: !c.VerifySSL, + } + tlsClientCfg, err := consul.SetupTLSConfig(&tlsConfig) + if err != nil { + return nil, fmt.Errorf("error creating tls client config for consul: %v", err) + } + config.HttpClient.Transport = &http.Transport{ + TLSClientConfig: tlsClientCfg, + } + } + if c.EnableSSL && !c.VerifySSL { + config.HttpClient.Transport = &http.Transport{ + TLSClientConfig: &tls.Config{ + InsecureSkipVerify: true, + }, + } + } + + return config, nil +} diff -Nru nomad-0.3.2+dfsg/nomad/structs/config/README.md nomad-0.4.0+dfsg/nomad/structs/config/README.md --- nomad-0.3.2+dfsg/nomad/structs/config/README.md 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/config/README.md 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,7 @@ +# Overview + +`nomad/structs/config` is a package for configuration `struct`s that are +shared among packages that needs the same `struct` definitions, but can't +import each other without creating a cyle. This `config` package must be +terminal in the import graph (or very close to terminal in the dependency +graph). diff -Nru nomad-0.3.2+dfsg/nomad/structs/diff.go nomad-0.4.0+dfsg/nomad/structs/diff.go --- nomad-0.3.2+dfsg/nomad/structs/diff.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/diff.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,1079 @@ +package structs + +import ( + "fmt" + "reflect" + "sort" + "strings" + + "github.com/hashicorp/nomad/helper/flatmap" + "github.com/mitchellh/hashstructure" +) + +// DiffType denotes the type of a diff object. +type DiffType string + +var ( + DiffTypeNone DiffType = "None" + DiffTypeAdded DiffType = "Added" + DiffTypeDeleted DiffType = "Deleted" + DiffTypeEdited DiffType = "Edited" +) + +func (d DiffType) Less(other DiffType) bool { + // Edited > Added > Deleted > None + // But we do a reverse sort + if d == other { + return false + } + + if d == DiffTypeEdited { + return true + } else if other == DiffTypeEdited { + return false + } else if d == DiffTypeAdded { + return true + } else if other == DiffTypeAdded { + return false + } else if d == DiffTypeDeleted { + return true + } else if other == DiffTypeDeleted { + return false + } + + return true +} + +// JobDiff contains the diff of two jobs. +type JobDiff struct { + Type DiffType + ID string + Fields []*FieldDiff + Objects []*ObjectDiff + TaskGroups []*TaskGroupDiff +} + +// Diff returns a diff of two jobs and a potential error if the Jobs are not +// diffable. If contextual diff is enabled, objects within the job will contain +// field information even if unchanged. +func (j *Job) Diff(other *Job, contextual bool) (*JobDiff, error) { + diff := &JobDiff{Type: DiffTypeNone} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + filter := []string{"ID", "Status", "StatusDescription", "CreateIndex", "ModifyIndex", "JobModifyIndex"} + + // Have to treat this special since it is a struct literal, not a pointer + var jUpdate, otherUpdate *UpdateStrategy + + if j == nil && other == nil { + return diff, nil + } else if j == nil { + j = &Job{} + otherUpdate = &other.Update + diff.Type = DiffTypeAdded + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + diff.ID = other.ID + } else if other == nil { + other = &Job{} + jUpdate = &j.Update + diff.Type = DiffTypeDeleted + oldPrimitiveFlat = flatmap.Flatten(j, filter, true) + diff.ID = j.ID + } else { + if j.ID != other.ID { + return nil, fmt.Errorf("can not diff jobs with different IDs: %q and %q", j.ID, other.ID) + } + + jUpdate = &j.Update + otherUpdate = &other.Update + oldPrimitiveFlat = flatmap.Flatten(j, filter, true) + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + diff.ID = other.ID + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false) + + // Datacenters diff + if setDiff := stringSetDiff(j.Datacenters, other.Datacenters, "Datacenters"); setDiff != nil { + diff.Objects = append(diff.Objects, setDiff) + } + + // Constraints diff + conDiff := primitiveObjectSetDiff( + interfaceSlice(j.Constraints), + interfaceSlice(other.Constraints), + []string{"str"}, + "Constraint", + contextual) + if conDiff != nil { + diff.Objects = append(diff.Objects, conDiff...) + } + + // Task groups diff + tgs, err := taskGroupDiffs(j.TaskGroups, other.TaskGroups, contextual) + if err != nil { + return nil, err + } + diff.TaskGroups = tgs + + // Update diff + if uDiff := primitiveObjectDiff(jUpdate, otherUpdate, nil, "Update", contextual); uDiff != nil { + diff.Objects = append(diff.Objects, uDiff) + } + + // Periodic diff + if pDiff := primitiveObjectDiff(j.Periodic, other.Periodic, nil, "Periodic", contextual); pDiff != nil { + diff.Objects = append(diff.Objects, pDiff) + } + + // If the job is not a delete or add, determine if there are edits. + if diff.Type == DiffTypeNone { + tgEdit := false + for _, tg := range diff.TaskGroups { + if tg.Type != DiffTypeNone { + tgEdit = true + break + } + } + if tgEdit || len(diff.Fields)+len(diff.Objects) != 0 { + diff.Type = DiffTypeEdited + } + } + + return diff, nil +} + +func (j *JobDiff) GoString() string { + out := fmt.Sprintf("Job %q (%s):\n", j.ID, j.Type) + + for _, f := range j.Fields { + out += fmt.Sprintf("%#v\n", f) + } + + for _, o := range j.Objects { + out += fmt.Sprintf("%#v\n", o) + } + + for _, tg := range j.TaskGroups { + out += fmt.Sprintf("%#v\n", tg) + } + + return out +} + +// TaskGroupDiff contains the diff of two task groups. +type TaskGroupDiff struct { + Type DiffType + Name string + Fields []*FieldDiff + Objects []*ObjectDiff + Tasks []*TaskDiff + Updates map[string]uint64 +} + +// Diff returns a diff of two task groups. If contextual diff is enabled, +// objects' fields will be stored even if no diff occurred as long as one field +// changed. +func (tg *TaskGroup) Diff(other *TaskGroup, contextual bool) (*TaskGroupDiff, error) { + diff := &TaskGroupDiff{Type: DiffTypeNone} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + filter := []string{"Name"} + + if tg == nil && other == nil { + return diff, nil + } else if tg == nil { + tg = &TaskGroup{} + diff.Type = DiffTypeAdded + diff.Name = other.Name + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } else if other == nil { + other = &TaskGroup{} + diff.Type = DiffTypeDeleted + diff.Name = tg.Name + oldPrimitiveFlat = flatmap.Flatten(tg, filter, true) + } else { + if !reflect.DeepEqual(tg, other) { + diff.Type = DiffTypeEdited + } + if tg.Name != other.Name { + return nil, fmt.Errorf("can not diff task groups with different names: %q and %q", tg.Name, other.Name) + } + diff.Name = other.Name + oldPrimitiveFlat = flatmap.Flatten(tg, filter, true) + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false) + + // Constraints diff + conDiff := primitiveObjectSetDiff( + interfaceSlice(tg.Constraints), + interfaceSlice(other.Constraints), + []string{"str"}, + "Constraint", + contextual) + if conDiff != nil { + diff.Objects = append(diff.Objects, conDiff...) + } + + // Restart policy diff + rDiff := primitiveObjectDiff(tg.RestartPolicy, other.RestartPolicy, nil, "RestartPolicy", contextual) + if rDiff != nil { + diff.Objects = append(diff.Objects, rDiff) + } + + // Tasks diff + tasks, err := taskDiffs(tg.Tasks, other.Tasks, contextual) + if err != nil { + return nil, err + } + diff.Tasks = tasks + + return diff, nil +} + +func (tg *TaskGroupDiff) GoString() string { + out := fmt.Sprintf("Group %q (%s):\n", tg.Name, tg.Type) + + if len(tg.Updates) != 0 { + out += "Updates {\n" + for update, count := range tg.Updates { + out += fmt.Sprintf("%d %s\n", count, update) + } + out += "}\n" + } + + for _, f := range tg.Fields { + out += fmt.Sprintf("%#v\n", f) + } + + for _, o := range tg.Objects { + out += fmt.Sprintf("%#v\n", o) + } + + for _, t := range tg.Tasks { + out += fmt.Sprintf("%#v\n", t) + } + + return out +} + +// TaskGroupDiffs diffs two sets of task groups. If contextual diff is enabled, +// objects' fields will be stored even if no diff occurred as long as one field +// changed. +func taskGroupDiffs(old, new []*TaskGroup, contextual bool) ([]*TaskGroupDiff, error) { + oldMap := make(map[string]*TaskGroup, len(old)) + newMap := make(map[string]*TaskGroup, len(new)) + for _, o := range old { + oldMap[o.Name] = o + } + for _, n := range new { + newMap[n.Name] = n + } + + var diffs []*TaskGroupDiff + for name, oldGroup := range oldMap { + // Diff the same, deleted and edited + diff, err := oldGroup.Diff(newMap[name], contextual) + if err != nil { + return nil, err + } + diffs = append(diffs, diff) + } + + for name, newGroup := range newMap { + // Diff the added + if old, ok := oldMap[name]; !ok { + diff, err := old.Diff(newGroup, contextual) + if err != nil { + return nil, err + } + diffs = append(diffs, diff) + } + } + + sort.Sort(TaskGroupDiffs(diffs)) + return diffs, nil +} + +// For sorting TaskGroupDiffs +type TaskGroupDiffs []*TaskGroupDiff + +func (tg TaskGroupDiffs) Len() int { return len(tg) } +func (tg TaskGroupDiffs) Swap(i, j int) { tg[i], tg[j] = tg[j], tg[i] } +func (tg TaskGroupDiffs) Less(i, j int) bool { return tg[i].Name < tg[j].Name } + +// TaskDiff contains the diff of two Tasks +type TaskDiff struct { + Type DiffType + Name string + Fields []*FieldDiff + Objects []*ObjectDiff + Annotations []string +} + +// Diff returns a diff of two tasks. If contextual diff is enabled, objects +// within the task will contain field information even if unchanged. +func (t *Task) Diff(other *Task, contextual bool) (*TaskDiff, error) { + diff := &TaskDiff{Type: DiffTypeNone} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + filter := []string{"Name", "Config"} + + if t == nil && other == nil { + return diff, nil + } else if t == nil { + t = &Task{} + diff.Type = DiffTypeAdded + diff.Name = other.Name + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } else if other == nil { + other = &Task{} + diff.Type = DiffTypeDeleted + diff.Name = t.Name + oldPrimitiveFlat = flatmap.Flatten(t, filter, true) + } else { + if !reflect.DeepEqual(t, other) { + diff.Type = DiffTypeEdited + } + if t.Name != other.Name { + return nil, fmt.Errorf("can not diff tasks with different names: %q and %q", t.Name, other.Name) + } + diff.Name = other.Name + oldPrimitiveFlat = flatmap.Flatten(t, filter, true) + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false) + + // Constraints diff + conDiff := primitiveObjectSetDiff( + interfaceSlice(t.Constraints), + interfaceSlice(other.Constraints), + []string{"str"}, + "Constraint", + contextual) + if conDiff != nil { + diff.Objects = append(diff.Objects, conDiff...) + } + + // Config diff + if cDiff := configDiff(t.Config, other.Config, contextual); cDiff != nil { + diff.Objects = append(diff.Objects, cDiff) + } + + // Resources diff + if rDiff := t.Resources.Diff(other.Resources, contextual); rDiff != nil { + diff.Objects = append(diff.Objects, rDiff) + } + + // LogConfig diff + lDiff := primitiveObjectDiff(t.LogConfig, other.LogConfig, nil, "LogConfig", contextual) + if lDiff != nil { + diff.Objects = append(diff.Objects, lDiff) + } + + // Artifacts diff + diffs := primitiveObjectSetDiff( + interfaceSlice(t.Artifacts), + interfaceSlice(other.Artifacts), + nil, + "Artifact", + contextual) + if diffs != nil { + diff.Objects = append(diff.Objects, diffs...) + } + + // Services diff + if sDiffs := serviceDiffs(t.Services, other.Services, contextual); sDiffs != nil { + diff.Objects = append(diff.Objects, sDiffs...) + } + + return diff, nil +} + +func (t *TaskDiff) GoString() string { + var out string + if len(t.Annotations) == 0 { + out = fmt.Sprintf("Task %q (%s):\n", t.Name, t.Type) + } else { + out = fmt.Sprintf("Task %q (%s) (%s):\n", t.Name, t.Type, strings.Join(t.Annotations, ",")) + } + + for _, f := range t.Fields { + out += fmt.Sprintf("%#v\n", f) + } + + for _, o := range t.Objects { + out += fmt.Sprintf("%#v\n", o) + } + + return out +} + +// taskDiffs diffs a set of tasks. If contextual diff is enabled, unchanged +// fields within objects nested in the tasks will be returned. +func taskDiffs(old, new []*Task, contextual bool) ([]*TaskDiff, error) { + oldMap := make(map[string]*Task, len(old)) + newMap := make(map[string]*Task, len(new)) + for _, o := range old { + oldMap[o.Name] = o + } + for _, n := range new { + newMap[n.Name] = n + } + + var diffs []*TaskDiff + for name, oldGroup := range oldMap { + // Diff the same, deleted and edited + diff, err := oldGroup.Diff(newMap[name], contextual) + if err != nil { + return nil, err + } + diffs = append(diffs, diff) + } + + for name, newGroup := range newMap { + // Diff the added + if old, ok := oldMap[name]; !ok { + diff, err := old.Diff(newGroup, contextual) + if err != nil { + return nil, err + } + diffs = append(diffs, diff) + } + } + + sort.Sort(TaskDiffs(diffs)) + return diffs, nil +} + +// For sorting TaskDiffs +type TaskDiffs []*TaskDiff + +func (t TaskDiffs) Len() int { return len(t) } +func (t TaskDiffs) Swap(i, j int) { t[i], t[j] = t[j], t[i] } +func (t TaskDiffs) Less(i, j int) bool { return t[i].Name < t[j].Name } + +// serviceDiff returns the diff of two service objects. If contextual diff is +// enabled, all fields will be returned, even if no diff occurred. +func serviceDiff(old, new *Service, contextual bool) *ObjectDiff { + diff := &ObjectDiff{Type: DiffTypeNone, Name: "Service"} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + + if reflect.DeepEqual(old, new) { + return nil + } else if old == nil { + old = &Service{} + diff.Type = DiffTypeAdded + newPrimitiveFlat = flatmap.Flatten(new, nil, true) + } else if new == nil { + new = &Service{} + diff.Type = DiffTypeDeleted + oldPrimitiveFlat = flatmap.Flatten(old, nil, true) + } else { + diff.Type = DiffTypeEdited + oldPrimitiveFlat = flatmap.Flatten(old, nil, true) + newPrimitiveFlat = flatmap.Flatten(new, nil, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + + // Checks diffs + if cDiffs := serviceCheckDiffs(old.Checks, new.Checks, contextual); cDiffs != nil { + diff.Objects = append(diff.Objects, cDiffs...) + } + + return diff +} + +// serviceDiffs diffs a set of services. If contextual diff is enabled, unchanged +// fields within objects nested in the tasks will be returned. +func serviceDiffs(old, new []*Service, contextual bool) []*ObjectDiff { + oldMap := make(map[string]*Service, len(old)) + newMap := make(map[string]*Service, len(new)) + for _, o := range old { + oldMap[o.Name] = o + } + for _, n := range new { + newMap[n.Name] = n + } + + var diffs []*ObjectDiff + for name, oldService := range oldMap { + // Diff the same, deleted and edited + if diff := serviceDiff(oldService, newMap[name], contextual); diff != nil { + diffs = append(diffs, diff) + } + } + + for name, newService := range newMap { + // Diff the added + if old, ok := oldMap[name]; !ok { + if diff := serviceDiff(old, newService, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + } + + sort.Sort(ObjectDiffs(diffs)) + return diffs +} + +// serviceCheckDiff returns the diff of two service check objects. If contextual +// diff is enabled, all fields will be returned, even if no diff occurred. +func serviceCheckDiff(old, new *ServiceCheck, contextual bool) *ObjectDiff { + diff := &ObjectDiff{Type: DiffTypeNone, Name: "Check"} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + + if reflect.DeepEqual(old, new) { + return nil + } else if old == nil { + old = &ServiceCheck{} + diff.Type = DiffTypeAdded + newPrimitiveFlat = flatmap.Flatten(new, nil, true) + } else if new == nil { + new = &ServiceCheck{} + diff.Type = DiffTypeDeleted + oldPrimitiveFlat = flatmap.Flatten(old, nil, true) + } else { + diff.Type = DiffTypeEdited + oldPrimitiveFlat = flatmap.Flatten(old, nil, true) + newPrimitiveFlat = flatmap.Flatten(new, nil, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + return diff +} + +// serviceCheckDiffs diffs a set of service checks. If contextual diff is +// enabled, unchanged fields within objects nested in the tasks will be +// returned. +func serviceCheckDiffs(old, new []*ServiceCheck, contextual bool) []*ObjectDiff { + oldMap := make(map[string]*ServiceCheck, len(old)) + newMap := make(map[string]*ServiceCheck, len(new)) + for _, o := range old { + oldMap[o.Name] = o + } + for _, n := range new { + newMap[n.Name] = n + } + + var diffs []*ObjectDiff + for name, oldService := range oldMap { + // Diff the same, deleted and edited + if diff := serviceCheckDiff(oldService, newMap[name], contextual); diff != nil { + diffs = append(diffs, diff) + } + } + + for name, newService := range newMap { + // Diff the added + if old, ok := oldMap[name]; !ok { + if diff := serviceCheckDiff(old, newService, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + } + + sort.Sort(ObjectDiffs(diffs)) + return diffs +} + +// Diff returns a diff of two resource objects. If contextual diff is enabled, +// non-changed fields will still be returned. +func (r *Resources) Diff(other *Resources, contextual bool) *ObjectDiff { + diff := &ObjectDiff{Type: DiffTypeNone, Name: "Resources"} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + + if reflect.DeepEqual(r, other) { + return nil + } else if r == nil { + r = &Resources{} + diff.Type = DiffTypeAdded + newPrimitiveFlat = flatmap.Flatten(other, nil, true) + } else if other == nil { + other = &Resources{} + diff.Type = DiffTypeDeleted + oldPrimitiveFlat = flatmap.Flatten(r, nil, true) + } else { + diff.Type = DiffTypeEdited + oldPrimitiveFlat = flatmap.Flatten(r, nil, true) + newPrimitiveFlat = flatmap.Flatten(other, nil, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + + // Network Resources diff + if nDiffs := networkResourceDiffs(r.Networks, other.Networks, contextual); nDiffs != nil { + diff.Objects = append(diff.Objects, nDiffs...) + } + + return diff +} + +// Diff returns a diff of two network resources. If contextual diff is enabled, +// non-changed fields will still be returned. +func (r *NetworkResource) Diff(other *NetworkResource, contextual bool) *ObjectDiff { + diff := &ObjectDiff{Type: DiffTypeNone, Name: "Network"} + var oldPrimitiveFlat, newPrimitiveFlat map[string]string + filter := []string{"Device", "CIDR", "IP"} + + if reflect.DeepEqual(r, other) { + return nil + } else if r == nil { + r = &NetworkResource{} + diff.Type = DiffTypeAdded + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } else if other == nil { + other = &NetworkResource{} + diff.Type = DiffTypeDeleted + oldPrimitiveFlat = flatmap.Flatten(r, filter, true) + } else { + diff.Type = DiffTypeEdited + oldPrimitiveFlat = flatmap.Flatten(r, filter, true) + newPrimitiveFlat = flatmap.Flatten(other, filter, true) + } + + // Diff the primitive fields. + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + + // Port diffs + resPorts := portDiffs(r.ReservedPorts, other.ReservedPorts, false, contextual) + dynPorts := portDiffs(r.DynamicPorts, other.DynamicPorts, true, contextual) + if resPorts != nil { + diff.Objects = append(diff.Objects, resPorts...) + } + if dynPorts != nil { + diff.Objects = append(diff.Objects, dynPorts...) + } + + return diff +} + +// networkResourceDiffs diffs a set of NetworkResources. If contextual diff is enabled, +// non-changed fields will still be returned. +func networkResourceDiffs(old, new []*NetworkResource, contextual bool) []*ObjectDiff { + makeSet := func(objects []*NetworkResource) map[string]*NetworkResource { + objMap := make(map[string]*NetworkResource, len(objects)) + for _, obj := range objects { + hash, err := hashstructure.Hash(obj, nil) + if err != nil { + panic(err) + } + objMap[fmt.Sprintf("%d", hash)] = obj + } + + return objMap + } + + oldSet := makeSet(old) + newSet := makeSet(new) + + var diffs []*ObjectDiff + for k, oldV := range oldSet { + if newV, ok := newSet[k]; !ok { + if diff := oldV.Diff(newV, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + } + for k, newV := range newSet { + if oldV, ok := oldSet[k]; !ok { + if diff := oldV.Diff(newV, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + } + + sort.Sort(ObjectDiffs(diffs)) + return diffs + +} + +// portDiffs returns the diff of two sets of ports. The dynamic flag marks the +// set of ports as being Dynamic ports versus Static ports. If contextual diff is enabled, +// non-changed fields will still be returned. +func portDiffs(old, new []Port, dynamic bool, contextual bool) []*ObjectDiff { + makeSet := func(ports []Port) map[string]Port { + portMap := make(map[string]Port, len(ports)) + for _, port := range ports { + portMap[port.Label] = port + } + + return portMap + } + + oldPorts := makeSet(old) + newPorts := makeSet(new) + + var filter []string + name := "Static Port" + if dynamic { + filter = []string{"Value"} + name = "Dynamic Port" + } + + var diffs []*ObjectDiff + for portLabel, oldPort := range oldPorts { + // Diff the same, deleted and edited + if newPort, ok := newPorts[portLabel]; ok { + diff := primitiveObjectDiff(oldPort, newPort, filter, name, contextual) + if diff != nil { + diffs = append(diffs, diff) + } + } else { + diff := primitiveObjectDiff(oldPort, nil, filter, name, contextual) + if diff != nil { + diffs = append(diffs, diff) + } + } + } + for label, newPort := range newPorts { + // Diff the added + if _, ok := oldPorts[label]; !ok { + diff := primitiveObjectDiff(nil, newPort, filter, name, contextual) + if diff != nil { + diffs = append(diffs, diff) + } + } + } + + sort.Sort(ObjectDiffs(diffs)) + return diffs + +} + +// configDiff returns the diff of two Task Config objects. If contextual diff is +// enabled, all fields will be returned, even if no diff occurred. +func configDiff(old, new map[string]interface{}, contextual bool) *ObjectDiff { + diff := &ObjectDiff{Type: DiffTypeNone, Name: "Config"} + if reflect.DeepEqual(old, new) { + return nil + } else if len(old) == 0 { + diff.Type = DiffTypeAdded + } else if len(new) == 0 { + diff.Type = DiffTypeDeleted + } else { + diff.Type = DiffTypeEdited + } + + // Diff the primitive fields. + oldPrimitiveFlat := flatmap.Flatten(old, nil, false) + newPrimitiveFlat := flatmap.Flatten(new, nil, false) + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + return diff +} + +// ObjectDiff contains the diff of two generic objects. +type ObjectDiff struct { + Type DiffType + Name string + Fields []*FieldDiff + Objects []*ObjectDiff +} + +func (o *ObjectDiff) GoString() string { + out := fmt.Sprintf("\n%q (%s) {\n", o.Name, o.Type) + for _, f := range o.Fields { + out += fmt.Sprintf("%#v\n", f) + } + for _, o := range o.Objects { + out += fmt.Sprintf("%#v\n", o) + } + out += "}" + return out +} + +func (o *ObjectDiff) Less(other *ObjectDiff) bool { + if reflect.DeepEqual(o, other) { + return false + } else if other == nil { + return false + } else if o == nil { + return true + } + + if o.Name != other.Name { + return o.Name < other.Name + } + + if o.Type != other.Type { + return o.Type.Less(other.Type) + } + + if lO, lOther := len(o.Fields), len(other.Fields); lO != lOther { + return lO < lOther + } + + if lO, lOther := len(o.Objects), len(other.Objects); lO != lOther { + return lO < lOther + } + + // Check each field + sort.Sort(FieldDiffs(o.Fields)) + sort.Sort(FieldDiffs(other.Fields)) + + for i, oV := range o.Fields { + if oV.Less(other.Fields[i]) { + return true + } + } + + // Check each object + sort.Sort(ObjectDiffs(o.Objects)) + sort.Sort(ObjectDiffs(other.Objects)) + for i, oV := range o.Objects { + if oV.Less(other.Objects[i]) { + return true + } + } + + return false +} + +// For sorting ObjectDiffs +type ObjectDiffs []*ObjectDiff + +func (o ObjectDiffs) Len() int { return len(o) } +func (o ObjectDiffs) Swap(i, j int) { o[i], o[j] = o[j], o[i] } +func (o ObjectDiffs) Less(i, j int) bool { return o[i].Less(o[j]) } + +type FieldDiff struct { + Type DiffType + Name string + Old, New string + Annotations []string +} + +// fieldDiff returns a FieldDiff if old and new are different otherwise, it +// returns nil. If contextual diff is enabled, even non-changed fields will be +// returned. +func fieldDiff(old, new, name string, contextual bool) *FieldDiff { + diff := &FieldDiff{Name: name, Type: DiffTypeNone} + if old == new { + if !contextual { + return nil + } + diff.Old, diff.New = old, new + return diff + } + + if old == "" { + diff.Type = DiffTypeAdded + diff.New = new + } else if new == "" { + diff.Type = DiffTypeDeleted + diff.Old = old + } else { + diff.Type = DiffTypeEdited + diff.Old = old + diff.New = new + } + return diff +} + +func (f *FieldDiff) GoString() string { + out := fmt.Sprintf("%q (%s): %q => %q", f.Name, f.Type, f.Old, f.New) + if len(f.Annotations) != 0 { + out += fmt.Sprintf(" (%s)", strings.Join(f.Annotations, ", ")) + } + + return out +} + +func (f *FieldDiff) Less(other *FieldDiff) bool { + if reflect.DeepEqual(f, other) { + return false + } else if other == nil { + return false + } else if f == nil { + return true + } + + if f.Name != other.Name { + return f.Name < other.Name + } else if f.Old != other.Old { + return f.Old < other.Old + } + + return f.New < other.New +} + +// For sorting FieldDiffs +type FieldDiffs []*FieldDiff + +func (f FieldDiffs) Len() int { return len(f) } +func (f FieldDiffs) Swap(i, j int) { f[i], f[j] = f[j], f[i] } +func (f FieldDiffs) Less(i, j int) bool { return f[i].Less(f[j]) } + +// fieldDiffs takes a map of field names to their values and returns a set of +// field diffs. If contextual diff is enabled, even non-changed fields will be +// returned. +func fieldDiffs(old, new map[string]string, contextual bool) []*FieldDiff { + var diffs []*FieldDiff + visited := make(map[string]struct{}) + for k, oldV := range old { + visited[k] = struct{}{} + newV := new[k] + if diff := fieldDiff(oldV, newV, k, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + + for k, newV := range new { + if _, ok := visited[k]; !ok { + if diff := fieldDiff("", newV, k, contextual); diff != nil { + diffs = append(diffs, diff) + } + } + } + + sort.Sort(FieldDiffs(diffs)) + return diffs +} + +// stringSetDiff diffs two sets of strings with the given name. +func stringSetDiff(old, new []string, name string) *ObjectDiff { + oldMap := make(map[string]struct{}, len(old)) + newMap := make(map[string]struct{}, len(new)) + for _, o := range old { + oldMap[o] = struct{}{} + } + for _, n := range new { + newMap[n] = struct{}{} + } + if reflect.DeepEqual(oldMap, newMap) { + return nil + } + + diff := &ObjectDiff{Name: name} + var added, removed bool + for k := range oldMap { + if _, ok := newMap[k]; !ok { + diff.Fields = append(diff.Fields, fieldDiff(k, "", name, false)) + removed = true + } + } + + for k := range newMap { + if _, ok := oldMap[k]; !ok { + diff.Fields = append(diff.Fields, fieldDiff("", k, name, false)) + added = true + } + } + + sort.Sort(FieldDiffs(diff.Fields)) + + // Determine the type + if added && removed { + diff.Type = DiffTypeEdited + } else if added { + diff.Type = DiffTypeAdded + } else { + diff.Type = DiffTypeDeleted + } + + return diff +} + +// primitiveObjectDiff returns a diff of the passed objects' primitive fields. +// The filter field can be used to exclude fields from the diff. The name is the +// name of the objects. If contextual is set, non-changed fields will also be +// stored in the object diff. +func primitiveObjectDiff(old, new interface{}, filter []string, name string, contextual bool) *ObjectDiff { + oldPrimitiveFlat := flatmap.Flatten(old, filter, true) + newPrimitiveFlat := flatmap.Flatten(new, filter, true) + delete(oldPrimitiveFlat, "") + delete(newPrimitiveFlat, "") + + diff := &ObjectDiff{Name: name} + diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual) + + var added, deleted, edited bool + for _, f := range diff.Fields { + switch f.Type { + case DiffTypeEdited: + edited = true + break + case DiffTypeDeleted: + deleted = true + case DiffTypeAdded: + added = true + } + } + + if edited || added && deleted { + diff.Type = DiffTypeEdited + } else if added { + diff.Type = DiffTypeAdded + } else if deleted { + diff.Type = DiffTypeDeleted + } else { + return nil + } + + return diff +} + +// primitiveObjectSetDiff does a set difference of the old and new sets. The +// filter parameter can be used to filter a set of primitive fields in the +// passed structs. The name corresponds to the name of the passed objects. If +// contextual diff is enabled, objects' primtive fields will be returned even if +// no diff exists. +func primitiveObjectSetDiff(old, new []interface{}, filter []string, name string, contextual bool) []*ObjectDiff { + makeSet := func(objects []interface{}) map[string]interface{} { + objMap := make(map[string]interface{}, len(objects)) + for _, obj := range objects { + hash, err := hashstructure.Hash(obj, nil) + if err != nil { + panic(err) + } + objMap[fmt.Sprintf("%d", hash)] = obj + } + + return objMap + } + + oldSet := makeSet(old) + newSet := makeSet(new) + + var diffs []*ObjectDiff + for k, v := range oldSet { + // Deleted + if _, ok := newSet[k]; !ok { + diffs = append(diffs, primitiveObjectDiff(v, nil, filter, name, contextual)) + } + } + for k, v := range newSet { + // Added + if _, ok := oldSet[k]; !ok { + diffs = append(diffs, primitiveObjectDiff(nil, v, filter, name, contextual)) + } + } + + sort.Sort(ObjectDiffs(diffs)) + return diffs +} + +// interfaceSlice is a helper method that takes a slice of typed elements and +// returns a slice of interface. This method will panic if given a non-slice +// input. +func interfaceSlice(slice interface{}) []interface{} { + s := reflect.ValueOf(slice) + if s.Kind() != reflect.Slice { + panic("InterfaceSlice() given a non-slice type") + } + + ret := make([]interface{}, s.Len()) + + for i := 0; i < s.Len(); i++ { + ret[i] = s.Index(i).Interface() + } + + return ret +} diff -Nru nomad-0.3.2+dfsg/nomad/structs/diff_test.go nomad-0.4.0+dfsg/nomad/structs/diff_test.go --- nomad-0.3.2+dfsg/nomad/structs/diff_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/diff_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,2828 @@ +package structs + +import ( + "reflect" + "testing" + "time" +) + +func TestJobDiff(t *testing.T) { + cases := []struct { + Old, New *Job + Expected *JobDiff + Error bool + Contextual bool + }{ + { + Old: nil, + New: nil, + Expected: &JobDiff{ + Type: DiffTypeNone, + }, + }, + { + // Different IDs + Old: &Job{ + ID: "foo", + }, + New: &Job{ + ID: "bar", + }, + Error: true, + }, + { + // Primitive only that is the same + Old: &Job{ + Region: "foo", + ID: "foo", + Name: "foo", + Type: "batch", + Priority: 10, + AllAtOnce: true, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &Job{ + Region: "foo", + ID: "foo", + Name: "foo", + Type: "batch", + Priority: 10, + AllAtOnce: true, + Meta: map[string]string{ + "foo": "bar", + }, + }, + Expected: &JobDiff{ + Type: DiffTypeNone, + ID: "foo", + }, + }, + { + // Primitive only that is has diffs + Old: &Job{ + Region: "foo", + ID: "foo", + Name: "foo", + Type: "batch", + Priority: 10, + AllAtOnce: true, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &Job{ + Region: "bar", + ID: "foo", + Name: "bar", + Type: "system", + Priority: 100, + AllAtOnce: false, + Meta: map[string]string{ + "foo": "baz", + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + ID: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "AllAtOnce", + Old: "true", + New: "false", + }, + { + Type: DiffTypeEdited, + Name: "Meta[foo]", + Old: "bar", + New: "baz", + }, + { + Type: DiffTypeEdited, + Name: "Name", + Old: "foo", + New: "bar", + }, + { + Type: DiffTypeEdited, + Name: "Priority", + Old: "10", + New: "100", + }, + { + Type: DiffTypeEdited, + Name: "Region", + Old: "foo", + New: "bar", + }, + { + Type: DiffTypeEdited, + Name: "Type", + Old: "batch", + New: "system", + }, + }, + }, + }, + { + // Primitive only deleted job + Old: &Job{ + Region: "foo", + ID: "foo", + Name: "foo", + Type: "batch", + Priority: 10, + AllAtOnce: true, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: nil, + Expected: &JobDiff{ + Type: DiffTypeDeleted, + ID: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "AllAtOnce", + Old: "true", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Meta[foo]", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Name", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Priority", + Old: "10", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Region", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Type", + Old: "batch", + New: "", + }, + }, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "Update", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "MaxParallel", + Old: "0", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Stagger", + Old: "0", + New: "", + }, + }, + }, + }, + }, + }, + { + // Primitive only added job + Old: nil, + New: &Job{ + Region: "foo", + ID: "foo", + Name: "foo", + Type: "batch", + Priority: 10, + AllAtOnce: true, + Meta: map[string]string{ + "foo": "bar", + }, + }, + Expected: &JobDiff{ + Type: DiffTypeAdded, + ID: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "AllAtOnce", + Old: "", + New: "true", + }, + { + Type: DiffTypeAdded, + Name: "Meta[foo]", + Old: "", + New: "bar", + }, + { + Type: DiffTypeAdded, + Name: "Name", + Old: "", + New: "foo", + }, + { + Type: DiffTypeAdded, + Name: "Priority", + Old: "", + New: "10", + }, + { + Type: DiffTypeAdded, + Name: "Region", + Old: "", + New: "foo", + }, + { + Type: DiffTypeAdded, + Name: "Type", + Old: "", + New: "batch", + }, + }, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Update", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "MaxParallel", + Old: "", + New: "0", + }, + { + Type: DiffTypeAdded, + Name: "Stagger", + Old: "", + New: "0", + }, + }, + }, + }, + }, + }, + { + // Map diff + Old: &Job{ + Meta: map[string]string{ + "foo": "foo", + "bar": "bar", + }, + }, + New: &Job{ + Meta: map[string]string{ + "bar": "bar", + "baz": "baz", + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Meta[baz]", + Old: "", + New: "baz", + }, + { + Type: DiffTypeDeleted, + Name: "Meta[foo]", + Old: "foo", + New: "", + }, + }, + }, + }, + { + // Datacenter diff both added and removed + Old: &Job{ + Datacenters: []string{"foo", "bar"}, + }, + New: &Job{ + Datacenters: []string{"baz", "bar"}, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Datacenters", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Datacenters", + Old: "", + New: "baz", + }, + { + Type: DiffTypeDeleted, + Name: "Datacenters", + Old: "foo", + New: "", + }, + }, + }, + }, + }, + }, + { + // Datacenter diff just added + Old: &Job{ + Datacenters: []string{"foo", "bar"}, + }, + New: &Job{ + Datacenters: []string{"foo", "bar", "baz"}, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Datacenters", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Datacenters", + Old: "", + New: "baz", + }, + }, + }, + }, + }, + }, + { + // Datacenter diff just deleted + Old: &Job{ + Datacenters: []string{"foo", "bar"}, + }, + New: &Job{ + Datacenters: []string{"foo"}, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "Datacenters", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Datacenters", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + { + // Update strategy edited + Old: &Job{ + Update: UpdateStrategy{ + Stagger: 10 * time.Second, + MaxParallel: 5, + }, + }, + New: &Job{ + Update: UpdateStrategy{ + Stagger: 60 * time.Second, + MaxParallel: 10, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Update", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "MaxParallel", + Old: "5", + New: "10", + }, + { + Type: DiffTypeEdited, + Name: "Stagger", + Old: "10000000000", + New: "60000000000", + }, + }, + }, + }, + }, + }, + { + // Update strategy edited with context + Contextual: true, + Old: &Job{ + Update: UpdateStrategy{ + Stagger: 10 * time.Second, + MaxParallel: 5, + }, + }, + New: &Job{ + Update: UpdateStrategy{ + Stagger: 60 * time.Second, + MaxParallel: 5, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Update", + Fields: []*FieldDiff{ + { + Type: DiffTypeNone, + Name: "MaxParallel", + Old: "5", + New: "5", + }, + { + Type: DiffTypeEdited, + Name: "Stagger", + Old: "10000000000", + New: "60000000000", + }, + }, + }, + }, + }, + }, + { + // Periodic added + Old: &Job{}, + New: &Job{ + Periodic: &PeriodicConfig{ + Enabled: false, + Spec: "*/15 * * * * *", + SpecType: "foo", + ProhibitOverlap: false, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Periodic", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Enabled", + Old: "", + New: "false", + }, + { + Type: DiffTypeAdded, + Name: "ProhibitOverlap", + Old: "", + New: "false", + }, + { + Type: DiffTypeAdded, + Name: "Spec", + Old: "", + New: "*/15 * * * * *", + }, + { + Type: DiffTypeAdded, + Name: "SpecType", + Old: "", + New: "foo", + }, + }, + }, + }, + }, + }, + { + // Periodic deleted + Old: &Job{ + Periodic: &PeriodicConfig{ + Enabled: false, + Spec: "*/15 * * * * *", + SpecType: "foo", + ProhibitOverlap: false, + }, + }, + New: &Job{}, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "Periodic", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Enabled", + Old: "false", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "ProhibitOverlap", + Old: "false", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Spec", + Old: "*/15 * * * * *", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "SpecType", + Old: "foo", + New: "", + }, + }, + }, + }, + }, + }, + { + // Periodic edited + Old: &Job{ + Periodic: &PeriodicConfig{ + Enabled: false, + Spec: "*/15 * * * * *", + SpecType: "foo", + ProhibitOverlap: false, + }, + }, + New: &Job{ + Periodic: &PeriodicConfig{ + Enabled: true, + Spec: "* * * * * *", + SpecType: "cron", + ProhibitOverlap: true, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Periodic", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Enabled", + Old: "false", + New: "true", + }, + { + Type: DiffTypeEdited, + Name: "ProhibitOverlap", + Old: "false", + New: "true", + }, + { + Type: DiffTypeEdited, + Name: "Spec", + Old: "*/15 * * * * *", + New: "* * * * * *", + }, + { + Type: DiffTypeEdited, + Name: "SpecType", + Old: "foo", + New: "cron", + }, + }, + }, + }, + }, + }, + { + // Periodic edited with context + Contextual: true, + Old: &Job{ + Periodic: &PeriodicConfig{ + Enabled: false, + Spec: "*/15 * * * * *", + SpecType: "foo", + ProhibitOverlap: false, + }, + }, + New: &Job{ + Periodic: &PeriodicConfig{ + Enabled: true, + Spec: "* * * * * *", + SpecType: "foo", + ProhibitOverlap: false, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Periodic", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Enabled", + Old: "false", + New: "true", + }, + { + Type: DiffTypeNone, + Name: "ProhibitOverlap", + Old: "false", + New: "false", + }, + { + Type: DiffTypeEdited, + Name: "Spec", + Old: "*/15 * * * * *", + New: "* * * * * *", + }, + { + Type: DiffTypeNone, + Name: "SpecType", + Old: "foo", + New: "foo", + }, + }, + }, + }, + }, + }, + { + // Constraints edited + Old: &Job{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "bar", + RTarget: "bar", + Operand: "bar", + str: "bar", + }, + }, + }, + New: &Job{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "baz", + RTarget: "baz", + Operand: "baz", + str: "baz", + }, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "LTarget", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "Operand", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "RTarget", + Old: "", + New: "baz", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "LTarget", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Operand", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "RTarget", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + { + // Task groups edited + Old: &Job{ + TaskGroups: []*TaskGroup{ + { + Name: "foo", + Count: 1, + }, + { + Name: "bar", + Count: 1, + }, + { + Name: "baz", + Count: 1, + }, + }, + }, + New: &Job{ + TaskGroups: []*TaskGroup{ + { + Name: "bar", + Count: 1, + }, + { + Name: "baz", + Count: 2, + }, + { + Name: "bam", + Count: 1, + }, + }, + }, + Expected: &JobDiff{ + Type: DiffTypeEdited, + TaskGroups: []*TaskGroupDiff{ + { + Type: DiffTypeAdded, + Name: "bam", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Count", + Old: "", + New: "1", + }, + }, + }, + { + Type: DiffTypeNone, + Name: "bar", + }, + { + Type: DiffTypeEdited, + Name: "baz", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Count", + Old: "1", + New: "2", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Count", + Old: "1", + New: "", + }, + }, + }, + }, + }, + }, + } + + for i, c := range cases { + actual, err := c.Old.Diff(c.New, c.Contextual) + if c.Error && err == nil { + t.Fatalf("case %d: expected errored") + } else if err != nil { + if !c.Error { + t.Fatalf("case %d: errored %#v", i+1, err) + } else { + continue + } + } + + if !reflect.DeepEqual(actual, c.Expected) { + t.Fatalf("case %d: got:\n%#v\n want:\n%#v\n", + i+1, actual, c.Expected) + } + } +} + +func TestTaskGroupDiff(t *testing.T) { + cases := []struct { + Old, New *TaskGroup + Expected *TaskGroupDiff + Error bool + Contextual bool + }{ + { + Old: nil, + New: nil, + Expected: &TaskGroupDiff{ + Type: DiffTypeNone, + }, + }, + { + // Primitive only that has different names + Old: &TaskGroup{ + Name: "foo", + Count: 10, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &TaskGroup{ + Name: "bar", + Count: 10, + Meta: map[string]string{ + "foo": "bar", + }, + }, + Error: true, + }, + { + // Primitive only that is the same + Old: &TaskGroup{ + Name: "foo", + Count: 10, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &TaskGroup{ + Name: "foo", + Count: 10, + Meta: map[string]string{ + "foo": "bar", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeNone, + Name: "foo", + }, + }, + { + // Primitive only that has diffs + Old: &TaskGroup{ + Name: "foo", + Count: 10, + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &TaskGroup{ + Name: "foo", + Count: 100, + Meta: map[string]string{ + "foo": "baz", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Name: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Count", + Old: "10", + New: "100", + }, + { + Type: DiffTypeEdited, + Name: "Meta[foo]", + Old: "bar", + New: "baz", + }, + }, + }, + }, + { + // Map diff + Old: &TaskGroup{ + Meta: map[string]string{ + "foo": "foo", + "bar": "bar", + }, + }, + New: &TaskGroup{ + Meta: map[string]string{ + "bar": "bar", + "baz": "baz", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Meta[baz]", + Old: "", + New: "baz", + }, + { + Type: DiffTypeDeleted, + Name: "Meta[foo]", + Old: "foo", + New: "", + }, + }, + }, + }, + { + // Constraints edited + Old: &TaskGroup{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "bar", + RTarget: "bar", + Operand: "bar", + str: "bar", + }, + }, + }, + New: &TaskGroup{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "baz", + RTarget: "baz", + Operand: "baz", + str: "baz", + }, + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "LTarget", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "Operand", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "RTarget", + Old: "", + New: "baz", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "LTarget", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Operand", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "RTarget", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + { + // RestartPolicy added + Old: &TaskGroup{}, + New: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 1, + Interval: 1 * time.Second, + Delay: 1 * time.Second, + Mode: "fail", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "RestartPolicy", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Attempts", + Old: "", + New: "1", + }, + { + Type: DiffTypeAdded, + Name: "Delay", + Old: "", + New: "1000000000", + }, + { + Type: DiffTypeAdded, + Name: "Interval", + Old: "", + New: "1000000000", + }, + { + Type: DiffTypeAdded, + Name: "Mode", + Old: "", + New: "fail", + }, + }, + }, + }, + }, + }, + { + // RestartPolicy deleted + Old: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 1, + Interval: 1 * time.Second, + Delay: 1 * time.Second, + Mode: "fail", + }, + }, + New: &TaskGroup{}, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "RestartPolicy", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Attempts", + Old: "1", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Delay", + Old: "1000000000", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Interval", + Old: "1000000000", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Mode", + Old: "fail", + New: "", + }, + }, + }, + }, + }, + }, + { + // RestartPolicy edited + Old: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 1, + Interval: 1 * time.Second, + Delay: 1 * time.Second, + Mode: "fail", + }, + }, + New: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 2, + Interval: 2 * time.Second, + Delay: 2 * time.Second, + Mode: "delay", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "RestartPolicy", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Attempts", + Old: "1", + New: "2", + }, + { + Type: DiffTypeEdited, + Name: "Delay", + Old: "1000000000", + New: "2000000000", + }, + { + Type: DiffTypeEdited, + Name: "Interval", + Old: "1000000000", + New: "2000000000", + }, + { + Type: DiffTypeEdited, + Name: "Mode", + Old: "fail", + New: "delay", + }, + }, + }, + }, + }, + }, + { + // RestartPolicy edited with context + Contextual: true, + Old: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 1, + Interval: 1 * time.Second, + Delay: 1 * time.Second, + Mode: "fail", + }, + }, + New: &TaskGroup{ + RestartPolicy: &RestartPolicy{ + Attempts: 2, + Interval: 2 * time.Second, + Delay: 1 * time.Second, + Mode: "fail", + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "RestartPolicy", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Attempts", + Old: "1", + New: "2", + }, + { + Type: DiffTypeNone, + Name: "Delay", + Old: "1000000000", + New: "1000000000", + }, + { + Type: DiffTypeEdited, + Name: "Interval", + Old: "1000000000", + New: "2000000000", + }, + { + Type: DiffTypeNone, + Name: "Mode", + Old: "fail", + New: "fail", + }, + }, + }, + }, + }, + }, + { + // Tasks edited + Old: &TaskGroup{ + Tasks: []*Task{ + { + Name: "foo", + Driver: "docker", + }, + { + Name: "bar", + Driver: "docker", + }, + { + Name: "baz", + Driver: "docker", + }, + }, + }, + New: &TaskGroup{ + Tasks: []*Task{ + { + Name: "bar", + Driver: "docker", + }, + { + Name: "baz", + Driver: "exec", + }, + { + Name: "bam", + Driver: "docker", + }, + }, + }, + Expected: &TaskGroupDiff{ + Type: DiffTypeEdited, + Tasks: []*TaskDiff{ + { + Type: DiffTypeAdded, + Name: "bam", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Driver", + Old: "", + New: "docker", + }, + { + Type: DiffTypeAdded, + Name: "KillTimeout", + Old: "", + New: "0", + }, + }, + }, + { + Type: DiffTypeNone, + Name: "bar", + }, + { + Type: DiffTypeEdited, + Name: "baz", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Driver", + Old: "docker", + New: "exec", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Driver", + Old: "docker", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "KillTimeout", + Old: "0", + New: "", + }, + }, + }, + }, + }, + }, + } + + for i, c := range cases { + actual, err := c.Old.Diff(c.New, c.Contextual) + if c.Error && err == nil { + t.Fatalf("case %d: expected errored") + } else if err != nil { + if !c.Error { + t.Fatalf("case %d: errored %#v", i+1, err) + } else { + continue + } + } + + if !reflect.DeepEqual(actual, c.Expected) { + t.Fatalf("case %d: got:\n%#v\n want:\n%#v\n", + i+1, actual, c.Expected) + } + } +} + +func TestTaskDiff(t *testing.T) { + cases := []struct { + Old, New *Task + Expected *TaskDiff + Error bool + Contextual bool + }{ + { + Old: nil, + New: nil, + Expected: &TaskDiff{ + Type: DiffTypeNone, + }, + }, + { + // Primitive only that has different names + Old: &Task{ + Name: "foo", + Meta: map[string]string{ + "foo": "bar", + }, + }, + New: &Task{ + Name: "bar", + Meta: map[string]string{ + "foo": "bar", + }, + }, + Error: true, + }, + { + // Primitive only that is the same + Old: &Task{ + Name: "foo", + Driver: "exec", + User: "foo", + Env: map[string]string{ + "FOO": "bar", + }, + Meta: map[string]string{ + "foo": "bar", + }, + KillTimeout: 1 * time.Second, + }, + New: &Task{ + Name: "foo", + Driver: "exec", + User: "foo", + Env: map[string]string{ + "FOO": "bar", + }, + Meta: map[string]string{ + "foo": "bar", + }, + KillTimeout: 1 * time.Second, + }, + Expected: &TaskDiff{ + Type: DiffTypeNone, + Name: "foo", + }, + }, + { + // Primitive only that has diffs + Old: &Task{ + Name: "foo", + Driver: "exec", + User: "foo", + Env: map[string]string{ + "FOO": "bar", + }, + Meta: map[string]string{ + "foo": "bar", + }, + KillTimeout: 1 * time.Second, + }, + New: &Task{ + Name: "foo", + Driver: "docker", + User: "bar", + Env: map[string]string{ + "FOO": "baz", + }, + Meta: map[string]string{ + "foo": "baz", + }, + KillTimeout: 2 * time.Second, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Name: "foo", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Driver", + Old: "exec", + New: "docker", + }, + { + Type: DiffTypeEdited, + Name: "Env[FOO]", + Old: "bar", + New: "baz", + }, + { + Type: DiffTypeEdited, + Name: "KillTimeout", + Old: "1000000000", + New: "2000000000", + }, + { + Type: DiffTypeEdited, + Name: "Meta[foo]", + Old: "bar", + New: "baz", + }, + { + Type: DiffTypeEdited, + Name: "User", + Old: "foo", + New: "bar", + }, + }, + }, + }, + { + // Map diff + Old: &Task{ + Meta: map[string]string{ + "foo": "foo", + "bar": "bar", + }, + Env: map[string]string{ + "foo": "foo", + "bar": "bar", + }, + }, + New: &Task{ + Meta: map[string]string{ + "bar": "bar", + "baz": "baz", + }, + Env: map[string]string{ + "bar": "bar", + "baz": "baz", + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Env[baz]", + Old: "", + New: "baz", + }, + { + Type: DiffTypeDeleted, + Name: "Env[foo]", + Old: "foo", + New: "", + }, + { + Type: DiffTypeAdded, + Name: "Meta[baz]", + Old: "", + New: "baz", + }, + { + Type: DiffTypeDeleted, + Name: "Meta[foo]", + Old: "foo", + New: "", + }, + }, + }, + }, + { + // Constraints edited + Old: &Task{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "bar", + RTarget: "bar", + Operand: "bar", + str: "bar", + }, + }, + }, + New: &Task{ + Constraints: []*Constraint{ + { + LTarget: "foo", + RTarget: "foo", + Operand: "foo", + str: "foo", + }, + { + LTarget: "baz", + RTarget: "baz", + Operand: "baz", + str: "baz", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "LTarget", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "Operand", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "RTarget", + Old: "", + New: "baz", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Constraint", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "LTarget", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Operand", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "RTarget", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + { + // LogConfig added + Old: &Task{}, + New: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 1, + MaxFileSizeMB: 10, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "LogConfig", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "MaxFileSizeMB", + Old: "", + New: "10", + }, + { + Type: DiffTypeAdded, + Name: "MaxFiles", + Old: "", + New: "1", + }, + }, + }, + }, + }, + }, + { + // LogConfig deleted + Old: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 1, + MaxFileSizeMB: 10, + }, + }, + New: &Task{}, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "LogConfig", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "MaxFileSizeMB", + Old: "10", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "MaxFiles", + Old: "1", + New: "", + }, + }, + }, + }, + }, + }, + { + // LogConfig edited + Old: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 1, + MaxFileSizeMB: 10, + }, + }, + New: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 2, + MaxFileSizeMB: 20, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "LogConfig", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "MaxFileSizeMB", + Old: "10", + New: "20", + }, + { + Type: DiffTypeEdited, + Name: "MaxFiles", + Old: "1", + New: "2", + }, + }, + }, + }, + }, + }, + { + // LogConfig edited with context + Contextual: true, + Old: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 1, + MaxFileSizeMB: 10, + }, + }, + New: &Task{ + LogConfig: &LogConfig{ + MaxFiles: 1, + MaxFileSizeMB: 20, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "LogConfig", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "MaxFileSizeMB", + Old: "10", + New: "20", + }, + { + Type: DiffTypeNone, + Name: "MaxFiles", + Old: "1", + New: "1", + }, + }, + }, + }, + }, + }, + { + // Artifacts edited + Old: &Task{ + Artifacts: []*TaskArtifact{ + { + GetterSource: "foo", + GetterOptions: map[string]string{ + "foo": "bar", + }, + RelativeDest: "foo", + }, + { + GetterSource: "bar", + GetterOptions: map[string]string{ + "bar": "baz", + }, + RelativeDest: "bar", + }, + }, + }, + New: &Task{ + Artifacts: []*TaskArtifact{ + { + GetterSource: "foo", + GetterOptions: map[string]string{ + "foo": "bar", + }, + RelativeDest: "foo", + }, + { + GetterSource: "bam", + GetterOptions: map[string]string{ + "bam": "baz", + }, + RelativeDest: "bam", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Artifact", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "GetterOptions[bam]", + Old: "", + New: "baz", + }, + { + Type: DiffTypeAdded, + Name: "GetterSource", + Old: "", + New: "bam", + }, + { + Type: DiffTypeAdded, + Name: "RelativeDest", + Old: "", + New: "bam", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Artifact", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "GetterOptions[bar]", + Old: "baz", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "GetterSource", + Old: "bar", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "RelativeDest", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + { + // Resources edited (no networks) + Old: &Task{ + Resources: &Resources{ + CPU: 100, + MemoryMB: 100, + DiskMB: 100, + IOPS: 100, + }, + }, + New: &Task{ + Resources: &Resources{ + CPU: 200, + MemoryMB: 200, + DiskMB: 200, + IOPS: 200, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Resources", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "CPU", + Old: "100", + New: "200", + }, + { + Type: DiffTypeEdited, + Name: "DiskMB", + Old: "100", + New: "200", + }, + { + Type: DiffTypeEdited, + Name: "IOPS", + Old: "100", + New: "200", + }, + { + Type: DiffTypeEdited, + Name: "MemoryMB", + Old: "100", + New: "200", + }, + }, + }, + }, + }, + }, + { + // Resources edited (no networks) with context + Contextual: true, + Old: &Task{ + Resources: &Resources{ + CPU: 100, + MemoryMB: 100, + DiskMB: 100, + IOPS: 100, + }, + }, + New: &Task{ + Resources: &Resources{ + CPU: 200, + MemoryMB: 100, + DiskMB: 200, + IOPS: 100, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Resources", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "CPU", + Old: "100", + New: "200", + }, + { + Type: DiffTypeEdited, + Name: "DiskMB", + Old: "100", + New: "200", + }, + { + Type: DiffTypeNone, + Name: "IOPS", + Old: "100", + New: "100", + }, + { + Type: DiffTypeNone, + Name: "MemoryMB", + Old: "100", + New: "100", + }, + }, + }, + }, + }, + }, + { + // Network Resources edited + Old: &Task{ + Resources: &Resources{ + Networks: []*NetworkResource{ + { + Device: "foo", + CIDR: "foo", + IP: "foo", + MBits: 100, + ReservedPorts: []Port{ + { + Label: "foo", + Value: 80, + }, + }, + DynamicPorts: []Port{ + { + Label: "bar", + }, + }, + }, + }, + }, + }, + New: &Task{ + Resources: &Resources{ + Networks: []*NetworkResource{ + { + Device: "bar", + CIDR: "bar", + IP: "bar", + MBits: 200, + ReservedPorts: []Port{ + { + Label: "foo", + Value: 81, + }, + }, + DynamicPorts: []Port{ + { + Label: "baz", + }, + }, + }, + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Resources", + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Network", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "MBits", + Old: "", + New: "200", + }, + }, + Objects: []*ObjectDiff{ + { + Type: DiffTypeAdded, + Name: "Static Port", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Label", + Old: "", + New: "foo", + }, + { + Type: DiffTypeAdded, + Name: "Value", + Old: "", + New: "81", + }, + }, + }, + { + Type: DiffTypeAdded, + Name: "Dynamic Port", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Label", + Old: "", + New: "baz", + }, + }, + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Network", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "MBits", + Old: "100", + New: "", + }, + }, + Objects: []*ObjectDiff{ + { + Type: DiffTypeDeleted, + Name: "Static Port", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Label", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Value", + Old: "80", + New: "", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Dynamic Port", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Label", + Old: "bar", + New: "", + }, + }, + }, + }, + }, + }, + }, + }, + }, + }, + { + // Config same + Old: &Task{ + Config: map[string]interface{}{ + "foo": 1, + "bar": "bar", + "bam": []string{"a", "b"}, + "baz": map[string]int{ + "a": 1, + "b": 2, + }, + "boom": &Port{ + Label: "boom_port", + }, + }, + }, + New: &Task{ + Config: map[string]interface{}{ + "foo": 1, + "bar": "bar", + "bam": []string{"a", "b"}, + "baz": map[string]int{ + "a": 1, + "b": 2, + }, + "boom": &Port{ + Label: "boom_port", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeNone, + }, + }, + { + // Config edited + Old: &Task{ + Config: map[string]interface{}{ + "foo": 1, + "bar": "baz", + "bam": []string{"a", "b"}, + "baz": map[string]int{ + "a": 1, + "b": 2, + }, + "boom": &Port{ + Label: "boom_port", + }, + }, + }, + New: &Task{ + Config: map[string]interface{}{ + "foo": 2, + "bar": "baz", + "bam": []string{"a", "c", "d"}, + "baz": map[string]int{ + "b": 3, + "c": 4, + }, + "boom": &Port{ + Label: "boom_port2", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Config", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "bam[1]", + Old: "b", + New: "c", + }, + { + Type: DiffTypeAdded, + Name: "bam[2]", + Old: "", + New: "d", + }, + { + Type: DiffTypeDeleted, + Name: "baz[a]", + Old: "1", + New: "", + }, + { + Type: DiffTypeEdited, + Name: "baz[b]", + Old: "2", + New: "3", + }, + { + Type: DiffTypeAdded, + Name: "baz[c]", + Old: "", + New: "4", + }, + { + Type: DiffTypeEdited, + Name: "boom.Label", + Old: "boom_port", + New: "boom_port2", + }, + { + Type: DiffTypeEdited, + Name: "foo", + Old: "1", + New: "2", + }, + }, + }, + }, + }, + }, + { + // Config edited with context + Contextual: true, + Old: &Task{ + Config: map[string]interface{}{ + "foo": 1, + "bar": "baz", + "bam": []string{"a", "b"}, + "baz": map[string]int{ + "a": 1, + "b": 2, + }, + "boom": &Port{ + Label: "boom_port", + }, + }, + }, + New: &Task{ + Config: map[string]interface{}{ + "foo": 2, + "bar": "baz", + "bam": []string{"a", "c", "d"}, + "baz": map[string]int{ + "a": 1, + "b": 2, + }, + "boom": &Port{ + Label: "boom_port", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Config", + Fields: []*FieldDiff{ + { + Type: DiffTypeNone, + Name: "bam[0]", + Old: "a", + New: "a", + }, + { + Type: DiffTypeEdited, + Name: "bam[1]", + Old: "b", + New: "c", + }, + { + Type: DiffTypeAdded, + Name: "bam[2]", + Old: "", + New: "d", + }, + { + Type: DiffTypeNone, + Name: "bar", + Old: "baz", + New: "baz", + }, + { + Type: DiffTypeNone, + Name: "baz[a]", + Old: "1", + New: "1", + }, + { + Type: DiffTypeNone, + Name: "baz[b]", + Old: "2", + New: "2", + }, + { + Type: DiffTypeNone, + Name: "boom.Label", + Old: "boom_port", + New: "boom_port", + }, + { + Type: DiffTypeNone, + Name: "boom.Value", + Old: "0", + New: "0", + }, + { + Type: DiffTypeEdited, + Name: "foo", + Old: "1", + New: "2", + }, + }, + }, + }, + }, + }, + { + // Services edited (no checks) + Old: &Task{ + Services: []*Service{ + { + Name: "foo", + PortLabel: "foo", + }, + { + Name: "bar", + PortLabel: "bar", + }, + { + Name: "baz", + PortLabel: "baz", + }, + }, + }, + New: &Task{ + Services: []*Service{ + { + Name: "bar", + PortLabel: "bar", + }, + { + Name: "baz", + PortLabel: "baz2", + }, + { + Name: "bam", + PortLabel: "bam", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Service", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "PortLabel", + Old: "baz", + New: "baz2", + }, + }, + }, + { + Type: DiffTypeAdded, + Name: "Service", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Name", + Old: "", + New: "bam", + }, + { + Type: DiffTypeAdded, + Name: "PortLabel", + Old: "", + New: "bam", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Service", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Name", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "PortLabel", + Old: "foo", + New: "", + }, + }, + }, + }, + }, + }, + { + // Services edited (no checks) with context + Contextual: true, + Old: &Task{ + Services: []*Service{ + { + Name: "foo", + PortLabel: "foo", + }, + }, + }, + New: &Task{ + Services: []*Service{ + { + Name: "foo", + PortLabel: "bar", + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Service", + Fields: []*FieldDiff{ + { + Type: DiffTypeNone, + Name: "Name", + Old: "foo", + New: "foo", + }, + { + Type: DiffTypeEdited, + Name: "PortLabel", + Old: "foo", + New: "bar", + }, + }, + }, + }, + }, + }, + { + // Service Checks edited + Old: &Task{ + Services: []*Service{ + { + Name: "foo", + Checks: []*ServiceCheck{ + { + Name: "foo", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + { + Name: "bar", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + { + Name: "baz", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + }, + }, + }, + }, + New: &Task{ + Services: []*Service{ + { + Name: "foo", + Checks: []*ServiceCheck{ + { + Name: "bar", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + { + Name: "baz", + Type: "tcp", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + { + Name: "bam", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + }, + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Service", + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Check", + Fields: []*FieldDiff{ + { + Type: DiffTypeEdited, + Name: "Type", + Old: "http", + New: "tcp", + }, + }, + }, + { + Type: DiffTypeAdded, + Name: "Check", + Fields: []*FieldDiff{ + { + Type: DiffTypeAdded, + Name: "Command", + Old: "", + New: "foo", + }, + { + Type: DiffTypeAdded, + Name: "Interval", + Old: "", + New: "1000000000", + }, + { + Type: DiffTypeAdded, + Name: "Name", + Old: "", + New: "bam", + }, + { + Type: DiffTypeAdded, + Name: "Path", + Old: "", + New: "foo", + }, + { + Type: DiffTypeAdded, + Name: "Protocol", + Old: "", + New: "http", + }, + { + Type: DiffTypeAdded, + Name: "Timeout", + Old: "", + New: "1000000000", + }, + { + Type: DiffTypeAdded, + Name: "Type", + Old: "", + New: "http", + }, + }, + }, + { + Type: DiffTypeDeleted, + Name: "Check", + Fields: []*FieldDiff{ + { + Type: DiffTypeDeleted, + Name: "Command", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Interval", + Old: "1000000000", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Name", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Path", + Old: "foo", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Protocol", + Old: "http", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Timeout", + Old: "1000000000", + New: "", + }, + { + Type: DiffTypeDeleted, + Name: "Type", + Old: "http", + New: "", + }, + }, + }, + }, + }, + }, + }, + }, + { + // Service Checks edited with context + Contextual: true, + Old: &Task{ + Services: []*Service{ + { + Name: "foo", + Checks: []*ServiceCheck{ + { + Name: "foo", + Type: "http", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + }, + }, + }, + }, + New: &Task{ + Services: []*Service{ + { + Name: "foo", + Checks: []*ServiceCheck{ + { + Name: "foo", + Type: "tcp", + Command: "foo", + Args: []string{"foo"}, + Path: "foo", + Protocol: "http", + Interval: 1 * time.Second, + Timeout: 1 * time.Second, + }, + }, + }, + }, + }, + Expected: &TaskDiff{ + Type: DiffTypeEdited, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Service", + Fields: []*FieldDiff{ + { + Type: DiffTypeNone, + Name: "Name", + Old: "foo", + New: "foo", + }, + { + Type: DiffTypeNone, + Name: "PortLabel", + Old: "", + New: "", + }, + }, + Objects: []*ObjectDiff{ + { + Type: DiffTypeEdited, + Name: "Check", + Fields: []*FieldDiff{ + { + Type: DiffTypeNone, + Name: "Command", + Old: "foo", + New: "foo", + }, + { + Type: DiffTypeNone, + Name: "Interval", + Old: "1000000000", + New: "1000000000", + }, + { + Type: DiffTypeNone, + Name: "Name", + Old: "foo", + New: "foo", + }, + { + Type: DiffTypeNone, + Name: "Path", + Old: "foo", + New: "foo", + }, + { + Type: DiffTypeNone, + Name: "Protocol", + Old: "http", + New: "http", + }, + { + Type: DiffTypeNone, + Name: "Timeout", + Old: "1000000000", + New: "1000000000", + }, + { + Type: DiffTypeEdited, + Name: "Type", + Old: "http", + New: "tcp", + }, + }, + }, + }, + }, + }, + }, + }, + } + + for i, c := range cases { + actual, err := c.Old.Diff(c.New, c.Contextual) + if c.Error && err == nil { + t.Fatalf("case %d: expected errored") + } else if err != nil { + if !c.Error { + t.Fatalf("case %d: errored %#v", i+1, err) + } else { + continue + } + } + + if !reflect.DeepEqual(actual, c.Expected) { + t.Errorf("case %d: got:\n%#v\n want:\n%#v\n", + i+1, actual, c.Expected) + } + } +} diff -Nru nomad-0.3.2+dfsg/nomad/structs/network.go nomad-0.4.0+dfsg/nomad/structs/network.go --- nomad-0.3.2+dfsg/nomad/structs/network.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/network.go 2016-06-28 21:26:34.000000000 +0000 @@ -203,6 +203,7 @@ offer := &NetworkResource{ Device: n.Device, IP: ipStr, + MBits: ask.MBits, ReservedPorts: ask.ReservedPorts, DynamicPorts: ask.DynamicPorts, } diff -Nru nomad-0.3.2+dfsg/nomad/structs/structs.go nomad-0.4.0+dfsg/nomad/structs/structs.go --- nomad-0.3.2+dfsg/nomad/structs/structs.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/structs.go 2016-06-28 21:26:34.000000000 +0000 @@ -54,6 +54,21 @@ // that new commands can be added in a way that won't cause // old servers to crash when the FSM attempts to process them. IgnoreUnknownTypeFlag MessageType = 128 + + // ApiMajorVersion is returned as part of the Status.Version request. + // It should be incremented anytime the APIs are changed in a way + // that would break clients for sane client versioning. + ApiMajorVersion = 1 + + // ApiMinorVersion is returned as part of the Status.Version request. + // It should be incremented anytime the APIs are changed to allow + // for sane client versioning. Minor changes should be compatible + // within the major version. + ApiMinorVersion = 1 + + ProtocolVersion = "protocol" + APIMajorVersion = "api.major" + APIMinorVersion = "api.minor" ) // RPCInfo is used to describe common information about query @@ -151,6 +166,25 @@ WriteRequest } +// NodeServerInfo is used to in NodeUpdateResponse to return Nomad server +// information used in RPC server lists. +type NodeServerInfo struct { + // RPCAdvertiseAddr is the IP endpoint that a Nomad Server wishes to + // be contacted at for RPCs. + RPCAdvertiseAddr string + + // RpcMajorVersion is the major version number the Nomad Server + // supports + RPCMajorVersion int32 + + // RpcMinorVersion is the minor version number the Nomad Server + // supports + RPCMinorVersion int32 + + // Datacenter is the datacenter that a Nomad server belongs to + Datacenter string +} + // NodeUpdateStatusRequest is used for Node.UpdateStatus endpoint // to update the status of a node. type NodeUpdateStatusRequest struct { @@ -182,6 +216,13 @@ // to register a job as being a schedulable entity. type JobRegisterRequest struct { Job *Job + + // If EnforceIndex is set then the job will only be registered if the passed + // JobModifyIndex matches the current Jobs index. If the index is zero, the + // register only occurs if the job is new. + EnforceIndex bool + JobModifyIndex uint64 + WriteRequest } @@ -209,6 +250,14 @@ QueryOptions } +// JobPlanRequest is used for the Job.Plan endpoint to trigger a dry-run +// evaluation of the Job. +type JobPlanRequest struct { + Job *Job + Diff bool // Toggles an annotated diff + WriteRequest +} + // NodeListRequest is used to parameterize a list request type NodeListRequest struct { QueryOptions @@ -284,7 +333,7 @@ QueryOptions } -// AllocsGetcRequest is used to query a set of allocations +// AllocsGetRequest is used to query a set of allocations type AllocsGetRequest struct { AllocIDs []string QueryOptions @@ -308,12 +357,6 @@ WriteMeta } -const ( - ProtocolVersion = "protocol" - APIMajorVersion = "api.major" - APIMinorVersion = "api.minor" -) - // VersionResponse is used for the Status.Version reseponse type VersionResponse struct { Build string @@ -343,6 +386,20 @@ EvalIDs []string EvalCreateIndex uint64 NodeModifyIndex uint64 + + // LeaderRPCAddr is the RPC address of the current Raft Leader. If + // empty, the current Nomad Server is in the minority of a partition. + LeaderRPCAddr string + + // NumNodes is the number of Nomad nodes attached to this quorum of + // Nomad Servers at the time of the response. This value can + // fluctuate based on the health of the cluster between heartbeats. + NumNodes int32 + + // Servers is the full list of known Nomad servers in the local + // region. + Servers []*NodeServerInfo + QueryMeta } @@ -390,6 +447,34 @@ QueryMeta } +// JobPlanResponse is used to respond to a job plan request +type JobPlanResponse struct { + // Annotations stores annotations explaining decisions the scheduler made. + Annotations *PlanAnnotations + + // FailedTGAllocs is the placement failures per task group. + FailedTGAllocs map[string]*AllocMetric + + // JobModifyIndex is the modification index of the job. The value can be + // used when running `nomad run` to ensure that the Job wasn’t modified + // since the last plan. If the job is being created, the value is zero. + JobModifyIndex uint64 + + // CreatedEvals is the set of evaluations created by the scheduler. The + // reasons for this can be rolling-updates or blocked evals. + CreatedEvals []*Evaluation + + // Diff contains the diff of the job and annotations on whether the change + // causes an in-place update or create/destroy + Diff *JobDiff + + // NextPeriodicLaunch is the time duration till the job would be launched if + // submitted. + NextPeriodicLaunch time.Time + + WriteMeta +} + // SingleAllocResponse is used to return a single allocation type SingleAllocResponse struct { Alloc *Allocation @@ -1043,6 +1128,7 @@ StatusDescription: j.StatusDescription, CreateIndex: j.CreateIndex, ModifyIndex: j.ModifyIndex, + JobModifyIndex: j.JobModifyIndex, } } @@ -1063,6 +1149,7 @@ StatusDescription string CreateIndex uint64 ModifyIndex uint64 + JobModifyIndex uint64 } // UpdateStrategy is used to modify how updates are done @@ -1084,7 +1171,7 @@ PeriodicSpecCron = "cron" // PeriodicSpecTest is only used by unit tests. It is a sorted, comma - // seperated list of unix timestamps at which to launch. + // separated list of unix timestamps at which to launch. PeriodicSpecTest = "_internal_test" ) @@ -1399,10 +1486,19 @@ } const ( + // TODO add Consul TTL check ServiceCheckHTTP = "http" ServiceCheckTCP = "tcp" - ServiceCheckDocker = "docker" ServiceCheckScript = "script" + + // minCheckInterval is the minimum check interval permitted. Consul + // currently has its MinInterval set to 1s. Mirror that here for + // consistency. + minCheckInterval = 1 * time.Second + + // minCheckTimeout is the minimum check timeout permitted for Consul + // script TTL checks. + minCheckTimeout = 1 * time.Second ) // The ServiceCheck data model represents the consul health check that @@ -1427,22 +1523,36 @@ return nsc } -func (sc *ServiceCheck) Validate() error { - t := strings.ToLower(sc.Type) - if t != ServiceCheckTCP && t != ServiceCheckHTTP && t != ServiceCheckScript { - return fmt.Errorf("service check must be either http, tcp or script type") - } - if sc.Type == ServiceCheckHTTP && sc.Path == "" { - return fmt.Errorf("service checks of http type must have a valid http path") - } +// validate a Service's ServiceCheck +func (sc *ServiceCheck) validate() error { + switch strings.ToLower(sc.Type) { + case ServiceCheckTCP: + if sc.Timeout > 0 && sc.Timeout <= minCheckTimeout { + return fmt.Errorf("timeout %v is lower than required minimum timeout %v", sc.Timeout, minCheckInterval) + } + case ServiceCheckHTTP: + if sc.Path == "" { + return fmt.Errorf("http type must have a valid http path") + } + + if sc.Timeout > 0 && sc.Timeout <= minCheckTimeout { + return fmt.Errorf("timeout %v is lower than required minimum timeout %v", sc.Timeout, minCheckInterval) + } + case ServiceCheckScript: + if sc.Command == "" { + return fmt.Errorf("script type must have a valid script path") + } - if sc.Type == ServiceCheckScript && sc.Command == "" { - return fmt.Errorf("service checks of script type must have a valid script path") + // TODO: enforce timeout on the Client side and reenable + // validation. + default: + return fmt.Errorf(`invalid type (%+q), must be one of "http", "tcp", or "script" type`, sc.Type) } - if sc.Interval <= 0 { - return fmt.Errorf("service checks must have positive time intervals") + if sc.Interval > 0 && sc.Interval <= minCheckInterval { + return fmt.Errorf("interval (%v) can not be lower than %v", sc.Interval, minCheckInterval) } + return nil } @@ -1470,15 +1580,18 @@ return fmt.Sprintf("%x", h.Sum(nil)) } -const ( - NomadConsulPrefix = "nomad-registered-service" -) - -// The Service model represents a Consul service defintion +// Service represents a Consul service definition in Nomad type Service struct { - Name string // Name of the service, defaults to id + // Name of the service registered with Consul. Consul defaults the + // Name to ServiceID if not specified. The Name if specified is used + // as one of the seed values when generating a Consul ServiceID. + Name string + + // PortLabel is either the numeric port number or the `host:port`. + // To specify the port number using the host's Consul Advertise + // address, specify an empty host in the PortLabel (e.g. `:port`). + PortLabel string `mapstructure:"port"` Tags []string // List of tags for the service - PortLabel string `mapstructure:"port"` // port for the service Checks []*ServiceCheck // List of checks associated with the service } @@ -1519,10 +1632,6 @@ } } -func (s *Service) ID(allocID string, taskName string) string { - return fmt.Sprintf("%s-%s-%s-%s", NomadConsulPrefix, allocID, taskName, s.Hash()) -} - // Validate checks if the Check definition is valid func (s *Service) Validate() error { var mErr multierror.Error @@ -1538,11 +1647,12 @@ for _, c := range s.Checks { if s.PortLabel == "" && c.RequiresPort() { - mErr.Errors = append(mErr.Errors, fmt.Errorf("check %q is not valid since service %q doesn't have port", c.Name, s.Name)) + mErr.Errors = append(mErr.Errors, fmt.Errorf("check %s invalid: check requires a port but the service %+q has no port", c.Name)) continue } - if err := c.Validate(); err != nil { - mErr.Errors = append(mErr.Errors, err) + + if err := c.validate(); err != nil { + mErr.Errors = append(mErr.Errors, fmt.Errorf("check %s invalid: %v", c.Name, err)) } } return mErr.ErrorOrNil() @@ -1708,6 +1818,11 @@ if t.Name == "" { mErr.Errors = append(mErr.Errors, errors.New("Missing task name")) } + if strings.ContainsAny(t.Name, `/\`) { + // We enforce this so that when creating the directory on disk it will + // not have any slashes. + mErr.Errors = append(mErr.Errors, errors.New("Task name can not include slashes")) + } if t.Driver == "" { mErr.Errors = append(mErr.Errors, errors.New("Missing task driver")) } @@ -1757,13 +1872,6 @@ } } - // If the driver is java or qemu ensure that they have specified an - // artifact. - if (t.Driver == "qemu" || t.Driver == "java") && len(t.Artifacts) == 0 { - err := fmt.Errorf("must specify at least one artifact when using %q driver", t.Driver) - mErr.Errors = append(mErr.Errors, err) - } - return mErr.ErrorOrNil() } @@ -1772,17 +1880,32 @@ func validateServices(t *Task) error { var mErr multierror.Error - // Ensure that services don't ask for non-existent ports. + // Ensure that services don't ask for non-existent ports and their names are + // unique. servicePorts := make(map[string][]string) + knownServices := make(map[string]struct{}) for i, service := range t.Services { if err := service.Validate(); err != nil { - outer := fmt.Errorf("service %d validation failed: %s", i, err) + outer := fmt.Errorf("service[%d] %+q validation failed: %s", i, service.Name, err) mErr.Errors = append(mErr.Errors, outer) } + if _, ok := knownServices[service.Name]; ok { + mErr.Errors = append(mErr.Errors, fmt.Errorf("service %q is duplicate", service.Name)) + } + knownServices[service.Name] = struct{}{} if service.PortLabel != "" { servicePorts[service.PortLabel] = append(servicePorts[service.PortLabel], service.Name) } + + // Ensure that check names are unique. + knownChecks := make(map[string]struct{}) + for _, check := range service.Checks { + if _, ok := knownChecks[check.Name]; ok { + mErr.Errors = append(mErr.Errors, fmt.Errorf("check %q is duplicate", check.Name)) + } + knownChecks[check.Name] = struct{}{} + } } // Get the set of port labels. @@ -1816,12 +1939,12 @@ ) // TaskState tracks the current state of a task and events that caused state -// transistions. +// transitions. type TaskState struct { // The current state of the task. State string - // Series of task events that transistion the state of the task. + // Series of task events that transition the state of the task. Events []*TaskEvent } @@ -1856,6 +1979,21 @@ } } +// Successful returns whether a task finished successfully. +func (ts *TaskState) Successful() bool { + l := len(ts.Events) + if ts.State != TaskStateDead || l == 0 { + return false + } + + e := ts.Events[l-1] + if e.Type != TaskTerminated { + return false + } + + return e.ExitCode == 0 +} + const ( // TaskDriveFailure indicates that the task could not be started due to a // failure in the driver. @@ -1905,7 +2043,7 @@ RestartReason string // Driver Failure fields. - DriverError string // A driver error occured while starting the task. + DriverError string // A driver error occurred while starting the task. // Task Terminated Fields. ExitCode int // The exit code of the task. @@ -2197,9 +2335,6 @@ // task. These should sum to the total Resources. TaskResources map[string]*Resources - // Services is a map of service names to service ids - Services map[string]string - // Metrics associated with this allocation Metrics *AllocMetric @@ -2249,14 +2384,6 @@ na.TaskResources = tr } - if a.Services != nil { - s := make(map[string]string, len(na.Services)) - for service, id := range na.Services { - s[service] = id - } - na.Services = s - } - na.Metrics = na.Metrics.Copy() if a.TaskStates != nil { @@ -2288,6 +2415,23 @@ } } +// RanSuccessfully returns whether the client has ran the allocation and all +// tasks finished successfully +func (a *Allocation) RanSuccessfully() bool { + // Handle the case the client hasn't started the allocation. + if len(a.TaskStates) == 0 { + return false + } + + // Check to see if all the tasks finised successfully in the allocation + allSuccess := true + for _, state := range a.TaskStates { + allSuccess = allSuccess && state.Successful() + } + + return allSuccess +} + // Stub returns a list stub for the allocation func (a *Allocation) Stub() *AllocListStub { return &AllocListStub{ @@ -2308,31 +2452,6 @@ } } -// PopulateServiceIDs generates the service IDs for all the service definitions -// in that Allocation -func (a *Allocation) PopulateServiceIDs(tg *TaskGroup) { - // Retain the old services, and re-initialize. We may be removing - // services, so we cannot update the existing map. - previous := a.Services - a.Services = make(map[string]string) - - for _, task := range tg.Tasks { - for _, service := range task.Services { - // Retain the service if an ID is already generated - if id, ok := previous[service.Name]; ok { - a.Services[service.Name] = id - continue - } - - // If the service hasn't been generated an ID, we generate one. - // We add a prefix to the Service ID so that we can know that this service - // is managed by Nomad since Consul can also have service which are not - // managed by Nomad - a.Services[service.Name] = fmt.Sprintf("%s-%s", NomadConsulPrefix, GenerateUUID()) - } - } -} - var ( // AllocationIndexRegex is a regular expression to find the allocation index. AllocationIndexRegex = regexp.MustCompile(".+\\[(\\d+)\\]$") @@ -2490,6 +2609,7 @@ EvalTriggerNodeUpdate = "node-update" EvalTriggerScheduled = "scheduled" EvalTriggerRollingUpdate = "rolling-update" + EvalTriggerMaxPlans = "max-plan-attempts" ) const ( @@ -2569,7 +2689,17 @@ // This is used to support rolling upgrades, where we need a chain of evaluations. PreviousEval string - // ClassEligibility tracks computed node classes that have been explicitely + // BlockedEval is the evaluation ID for a created blocked eval. A + // blocked eval will be created if all allocations could not be placed due + // to constraints or lacking resources. + BlockedEval string + + // FailedTGAllocs are task groups which have allocations that could not be + // made, but the metrics are persisted so that the user can use the feedback + // to determine the cause. + FailedTGAllocs map[string]*AllocMetric + + // ClassEligibility tracks computed node classes that have been explicitly // marked as eligible or ineligible. ClassEligibility map[string]bool @@ -2577,6 +2707,15 @@ // captured by computed node classes. EscapedComputedClass bool + // AnnotatePlan triggers the scheduler to provide additional annotations + // during the evaluation. This should not be set during normal operations. + AnnotatePlan bool + + // SnapshotIndex is the Raft index of the snapshot used to process the + // evaluation. As such it will only be set once it has gone through the + // scheduler. + SnapshotIndex uint64 + // Raft Indexes CreateIndex uint64 ModifyIndex uint64 @@ -2603,6 +2742,25 @@ } ne := new(Evaluation) *ne = *e + + // Copy ClassEligibility + if e.ClassEligibility != nil { + classes := make(map[string]bool, len(e.ClassEligibility)) + for class, elig := range e.ClassEligibility { + classes[class] = elig + } + ne.ClassEligibility = classes + } + + // Copy FailedTGAllocs + if e.FailedTGAllocs != nil { + failedTGs := make(map[string]*AllocMetric, len(e.FailedTGAllocs)) + for tg, metric := range e.FailedTGAllocs { + failedTGs[tg] = metric.Copy() + } + ne.FailedTGAllocs = failedTGs + } + return ne } @@ -2663,10 +2821,10 @@ } } -// BlockedEval creates a blocked evaluation to followup this eval to place any -// failed allocations. It takes the classes marked explicitely eligible or +// CreateBlockedEval creates a blocked evaluation to followup this eval to place any +// failed allocations. It takes the classes marked explicitly eligible or // ineligible and whether the job has escaped computed node classes. -func (e *Evaluation) BlockedEval(classEligibility map[string]bool, escaped bool) *Evaluation { +func (e *Evaluation) CreateBlockedEval(classEligibility map[string]bool, escaped bool) *Evaluation { return &Evaluation{ ID: GenerateUUID(), Priority: e.Priority, @@ -2717,10 +2875,9 @@ // The evicts must be considered prior to the allocations. NodeAllocation map[string][]*Allocation - // FailedAllocs are allocations that could not be made, - // but are persisted so that the user can use the feedback - // to determine the cause. - FailedAllocs []*Allocation + // Annotations contains annotations by the scheduler to be used by operators + // to understand the decisions made by the scheduler. + Annotations *PlanAnnotations } func (p *Plan) AppendUpdate(alloc *Allocation, status, desc string) { @@ -2765,13 +2922,9 @@ p.NodeAllocation[node] = append(existing, alloc) } -func (p *Plan) AppendFailed(alloc *Allocation) { - p.FailedAllocs = append(p.FailedAllocs, alloc) -} - // IsNoOp checks if this plan would do nothing func (p *Plan) IsNoOp() bool { - return len(p.NodeUpdate) == 0 && len(p.NodeAllocation) == 0 && len(p.FailedAllocs) == 0 + return len(p.NodeUpdate) == 0 && len(p.NodeAllocation) == 0 } // PlanResult is the result of a plan submitted to the leader. @@ -2782,11 +2935,6 @@ // NodeAllocation contains all the allocations that were committed. NodeAllocation map[string][]*Allocation - // FailedAllocs are allocations that could not be made, - // but are persisted so that the user can use the feedback - // to determine the cause. - FailedAllocs []*Allocation - // RefreshIndex is the index the worker should refresh state up to. // This allows all evictions and allocations to be materialized. // If any allocations were rejected due to stale data (node state, @@ -2800,7 +2948,7 @@ // IsNoOp checks if this plan result would do nothing func (p *PlanResult) IsNoOp() bool { - return len(p.NodeUpdate) == 0 && len(p.NodeAllocation) == 0 && len(p.FailedAllocs) == 0 + return len(p.NodeUpdate) == 0 && len(p.NodeAllocation) == 0 } // FullCommit is used to check if all the allocations in a plan @@ -2817,6 +2965,24 @@ return actual == expected, expected, actual } +// PlanAnnotations holds annotations made by the scheduler to give further debug +// information to operators. +type PlanAnnotations struct { + // DesiredTGUpdates is the set of desired updates per task group. + DesiredTGUpdates map[string]*DesiredUpdates +} + +// DesiredUpdates is the set of changes the scheduler would like to make given +// sufficient resources and cluster capacity. +type DesiredUpdates struct { + Ignore uint64 + Place uint64 + Migrate uint64 + Stop uint64 + InPlaceUpdate uint64 + DestructiveUpdate uint64 +} + // msgpackHandle is a shared handle for encoding/decoding of structs var MsgpackHandle = func() *codec.MsgpackHandle { h := &codec.MsgpackHandle{RawToString: true} diff -Nru nomad-0.3.2+dfsg/nomad/structs/structs_test.go nomad-0.4.0+dfsg/nomad/structs/structs_test.go --- nomad-0.3.2+dfsg/nomad/structs/structs_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/structs/structs_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -258,6 +258,13 @@ t.Fatalf("err: %s", err) } + task = &Task{Name: "web/foo"} + err = task.Validate() + mErr = err.(*multierror.Error) + if !strings.Contains(mErr.Errors[0].Error(), "slashes") { + t.Fatalf("err: %s", err) + } + task = &Task{ Name: "web", Driver: "docker", @@ -276,7 +283,7 @@ } func TestTask_Validate_Services(t *testing.T) { - s := &Service{ + s1 := &Service{ Name: "service-name", PortLabel: "bar", Checks: []*ServiceCheck{ @@ -284,9 +291,17 @@ Name: "check-name", Type: ServiceCheckTCP, }, + { + Name: "check-name", + Type: ServiceCheckTCP, + }, }, } + s2 := &Service{ + Name: "service-name", + } + task := &Task{ Name: "web", Driver: "docker", @@ -296,7 +311,7 @@ MemoryMB: 100, IOPS: 10, }, - Services: []*Service{s}, + Services: []*Service{s1, s2}, } err := task.Validate() if err == nil { @@ -305,6 +320,14 @@ if !strings.Contains(err.Error(), "referenced by services service-name does not exist") { t.Fatalf("err: %s", err) } + + if !strings.Contains(err.Error(), "service \"service-name\" is duplicate") { + t.Fatalf("err: %v", err) + } + + if !strings.Contains(err.Error(), "check \"check-name\" is duplicate") { + t.Fatalf("err: %v", err) + } } func TestTask_Validate_LogConfig(t *testing.T) { diff -Nru nomad-0.3.2+dfsg/nomad/system_endpoint.go nomad-0.4.0+dfsg/nomad/system_endpoint.go --- nomad-0.3.2+dfsg/nomad/system_endpoint.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/system_endpoint.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,6 +1,8 @@ package nomad import ( + "fmt" + "github.com/hashicorp/nomad/nomad/structs" ) @@ -16,6 +18,12 @@ return err } - s.srv.evalBroker.Enqueue(s.srv.coreJobEval(structs.CoreJobForceGC)) + // Get the states current index + snapshotIndex, err := s.srv.fsm.State().LatestIndex() + if err != nil { + return fmt.Errorf("failed to determine state store's index: %v", err) + } + + s.srv.evalBroker.Enqueue(s.srv.coreJobEval(structs.CoreJobForceGC, snapshotIndex)) return nil } diff -Nru nomad-0.3.2+dfsg/nomad/system_endpoint_test.go nomad-0.4.0+dfsg/nomad/system_endpoint_test.go --- nomad-0.3.2+dfsg/nomad/system_endpoint_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/system_endpoint_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -11,9 +11,6 @@ ) func TestSystemEndpoint_GarbageCollect(t *testing.T) { - //s1 := testServer(t, func(c *Config) { - //c.NumSchedulers = 0 // Prevent automatic dequeue - //}) s1 := testServer(t, nil) defer s1.Shutdown() codec := rpcClient(t, s1) @@ -23,7 +20,7 @@ state := s1.fsm.State() job := mock.Job() job.Type = structs.JobTypeBatch - if err := state.UpsertJob(0, job); err != nil { + if err := state.UpsertJob(1000, job); err != nil { t.Fatalf("UpsertAllocs() failed: %v", err) } diff -Nru nomad-0.3.2+dfsg/nomad/types/types.go nomad-0.4.0+dfsg/nomad/types/types.go --- nomad-0.3.2+dfsg/nomad/types/types.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/types/types.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,3 @@ +package types + +type PeriodicCallback func() error diff -Nru nomad-0.3.2+dfsg/nomad/util.go nomad-0.4.0+dfsg/nomad/util.go --- nomad-0.3.2+dfsg/nomad/util.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/util.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,17 +2,12 @@ import ( "fmt" - "math" - "math/big" "math/rand" "net" "os" "path/filepath" "runtime" "strconv" - "time" - - crand "crypto/rand" "github.com/hashicorp/serf/serf" ) @@ -39,14 +34,15 @@ // serverParts is used to return the parts of a server role type serverParts struct { - Name string - Region string - Datacenter string - Port int - Bootstrap bool - Expect int - Version int - Addr net.Addr + Name string + Region string + Datacenter string + Port int + Bootstrap bool + Expect int + MajorVersion int + MinorVersion int + Addr net.Addr } func (s *serverParts) String() string { @@ -81,31 +77,36 @@ return false, nil } - vsn_str := m.Tags["vsn"] - vsn, err := strconv.Atoi(vsn_str) + // The "vsn" tag was Version, which is now the MajorVersion number. + majorVersionStr := m.Tags["vsn"] + majorVersion, err := strconv.Atoi(majorVersionStr) if err != nil { return false, nil } + // To keep some semblance of convention, "mvn" is now the "Minor + // Version Number." + minorVersionStr := m.Tags["mvn"] + minorVersion, err := strconv.Atoi(minorVersionStr) + if err != nil { + minorVersion = 0 + } + addr := &net.TCPAddr{IP: m.Addr, Port: port} parts := &serverParts{ - Name: m.Name, - Region: region, - Datacenter: datacenter, - Port: port, - Bootstrap: bootstrap, - Expect: expect, - Addr: addr, - Version: vsn, + Name: m.Name, + Region: region, + Datacenter: datacenter, + Port: port, + Bootstrap: bootstrap, + Expect: expect, + Addr: addr, + MajorVersion: majorVersion, + MinorVersion: minorVersion, } return true, parts } -// Returns a random stagger interval between 0 and the duration -func randomStagger(intv time.Duration) time.Duration { - return time.Duration(uint64(rand.Int63()) % uint64(intv)) -} - // shuffleStrings randomly shuffles the list of strings func shuffleStrings(list []string) { for i := range list { @@ -121,24 +122,3 @@ } return b } - -// rateScaledInterval is used to choose an interval to perform an action in order -// to target an aggregate number of actions per second across the whole cluster. -func rateScaledInterval(rate float64, min time.Duration, n int) time.Duration { - interval := time.Duration(float64(time.Second) * float64(n) / rate) - if interval < min { - return min - } - return interval -} - -// seedRandom seeds the global random variable using a cryptographically random -// seed. It returns an error if determing the random seed fails. -func seedRandom() error { - n, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64)) - if err != nil { - return err - } - rand.Seed(n.Int64()) - return nil -} diff -Nru nomad-0.3.2+dfsg/nomad/util_test.go nomad-0.4.0+dfsg/nomad/util_test.go --- nomad-0.3.2+dfsg/nomad/util_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/util_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -4,7 +4,6 @@ "net" "reflect" "testing" - "time" "github.com/hashicorp/nomad/nomad/structs" "github.com/hashicorp/serf/serf" @@ -45,7 +44,7 @@ if parts.Addr.String() != "127.0.0.1:10000" { t.Fatalf("bad addr: %v", parts.Addr) } - if parts.Version != 1 { + if parts.MajorVersion != 1 { t.Fatalf("bad: %v", parts) } @@ -57,16 +56,6 @@ } } -func TestRandomStagger(t *testing.T) { - intv := time.Minute - for i := 0; i < 10; i++ { - stagger := randomStagger(intv) - if stagger < 0 || stagger >= intv { - t.Fatalf("Bad: %v", stagger) - } - } -} - func TestShuffleStrings(t *testing.T) { // Generate input inp := make([]string, 10) @@ -98,26 +87,3 @@ t.Fatalf("bad") } } - -func TestRateScaledInterval(t *testing.T) { - min := 1 * time.Second - rate := 200.0 - if v := rateScaledInterval(rate, min, 0); v != min { - t.Fatalf("Bad: %v", v) - } - if v := rateScaledInterval(rate, min, 100); v != min { - t.Fatalf("Bad: %v", v) - } - if v := rateScaledInterval(rate, min, 200); v != 1*time.Second { - t.Fatalf("Bad: %v", v) - } - if v := rateScaledInterval(rate, min, 1000); v != 5*time.Second { - t.Fatalf("Bad: %v", v) - } - if v := rateScaledInterval(rate, min, 5000); v != 25*time.Second { - t.Fatalf("Bad: %v", v) - } - if v := rateScaledInterval(rate, min, 10000); v != 50*time.Second { - t.Fatalf("Bad: %v", v) - } -} diff -Nru nomad-0.3.2+dfsg/nomad/worker.go nomad-0.4.0+dfsg/nomad/worker.go --- nomad-0.3.2+dfsg/nomad/worker.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/worker.go 2016-06-28 21:26:34.000000000 +0000 @@ -59,6 +59,11 @@ failures uint evalToken string + + // snapshotIndex is the index of the snapshot in which the scheduler was + // first envoked. It is used to mark the SnapshotIndex of evaluations + // Created, Updated or Reblocked. + snapshotIndex uint64 } // NewWorker starts a new worker associated with the given server @@ -207,12 +212,21 @@ // state (attempt to allocate to a failed/dead node), we may need // to sync our state again and do the planning with more recent data. func (w *Worker) waitForIndex(index uint64, timeout time.Duration) error { + // XXX: Potential optimization is to set up a watch on the state stores + // index table and only unblock via a trigger rather than timing out and + // checking. + start := time.Now() defer metrics.MeasureSince([]string{"nomad", "worker", "wait_for_index"}, start) CHECK: + // Get the states current index + snapshotIndex, err := w.srv.fsm.State().LatestIndex() + if err != nil { + return fmt.Errorf("failed to determine state store's index: %v", err) + } + // We only need the FSM state to be as recent as the given index - appliedIndex := w.srv.raft.AppliedIndex() - if index <= appliedIndex { + if index <= snapshotIndex { w.backoffReset() return nil } @@ -241,6 +255,12 @@ return fmt.Errorf("failed to snapshot state: %v", err) } + // Store the snapshot's index + w.snapshotIndex, err = snap.LatestIndex() + if err != nil { + return fmt.Errorf("failed to determine snapshot's index: %v", err) + } + // Create the scheduler, or use the special system scheduler var sched scheduler.Scheduler if eval.Type == structs.JobTypeCore { @@ -308,7 +328,7 @@ var state scheduler.State if result.RefreshIndex != 0 { // Wait for the the raft log to catchup to the evaluation - w.logger.Printf("[DEBUG] worker: refreshing state to index %d", result.RefreshIndex) + w.logger.Printf("[DEBUG] worker: refreshing state to index %d for %q", result.RefreshIndex, plan.EvalID) if err := w.waitForIndex(result.RefreshIndex, raftSyncLimit); err != nil { return nil, nil, err } @@ -334,6 +354,9 @@ } defer metrics.MeasureSince([]string{"nomad", "worker", "update_eval"}, time.Now()) + // Store the snapshot index in the eval + eval.SnapshotIndex = w.snapshotIndex + // Setup the request req := structs.EvalUpdateRequest{ Evals: []*structs.Evaluation{eval}, @@ -369,6 +392,9 @@ } defer metrics.MeasureSince([]string{"nomad", "worker", "create_eval"}, time.Now()) + // Store the snapshot index in the eval + eval.SnapshotIndex = w.snapshotIndex + // Setup the request req := structs.EvalUpdateRequest{ Evals: []*structs.Evaluation{eval}, @@ -393,6 +419,44 @@ w.backoffReset() } return nil +} + +// ReblockEval is used to reinsert a blocked evaluation into the blocked eval +// tracker. This allows the worker to act as the planner for the scheduler. +func (w *Worker) ReblockEval(eval *structs.Evaluation) error { + // Check for a shutdown before plan submission + if w.srv.IsShutdown() { + return fmt.Errorf("shutdown while planning") + } + defer metrics.MeasureSince([]string{"nomad", "worker", "reblock_eval"}, time.Now()) + + // Store the snapshot index in the eval + eval.SnapshotIndex = w.snapshotIndex + + // Setup the request + req := structs.EvalUpdateRequest{ + Evals: []*structs.Evaluation{eval}, + EvalToken: w.evalToken, + WriteRequest: structs.WriteRequest{ + Region: w.srv.config.Region, + }, + } + var resp structs.GenericResponse + +SUBMIT: + // Make the RPC call + if err := w.srv.RPC("Eval.Reblock", &req, &resp); err != nil { + w.logger.Printf("[ERR] worker: failed to reblock evaluation %#v: %v", + eval, err) + if w.shouldResubmit(err) && !w.backoffErr(backoffBaselineSlow, backoffLimitSlow) { + goto SUBMIT + } + return err + } else { + w.logger.Printf("[DEBUG] worker: reblocked evaluation %#v", eval) + w.backoffReset() + } + return nil } // shouldResubmit checks if a given error should be swallowed and the plan diff -Nru nomad-0.3.2+dfsg/nomad/worker_test.go nomad-0.4.0+dfsg/nomad/worker_test.go --- nomad-0.3.2+dfsg/nomad/worker_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/nomad/worker_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -52,12 +52,7 @@ // Create the evaluation eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) // Create a worker w := &Worker{srv: s1, logger: s1.logger} @@ -87,12 +82,7 @@ // Create the evaluation eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) // Create a worker w := &Worker{srv: s1, logger: s1.logger} @@ -163,12 +153,7 @@ // Create the evaluation eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) // Create a worker w := &Worker{srv: s1, logger: s1.logger} @@ -218,7 +203,10 @@ // Cause an increment go func() { time.Sleep(10 * time.Millisecond) - s1.raft.Barrier(0) + n := mock.Node() + if err := s1.fsm.state.UpsertNode(index+1, n); err != nil { + t.Fatalf("failed to upsert node: %v", err) + } }() // Wait for a future index @@ -266,12 +254,8 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) + evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) if err != nil { t.Fatalf("err: %v", err) @@ -328,12 +312,8 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) + evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) if err != nil { t.Fatalf("err: %v", err) @@ -395,12 +375,7 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) if err != nil { t.Fatalf("err: %v", err) @@ -426,6 +401,9 @@ if out.Status != structs.EvalStatusComplete { t.Fatalf("bad: %v", out) } + if out.SnapshotIndex != w.snapshotIndex { + t.Fatalf("bad: %v", out) + } } func TestWorker_CreateEval(t *testing.T) { @@ -442,12 +420,8 @@ // Create the register request eval1 := mock.Eval() - testutil.WaitForResult(func() (bool, error) { - err := s1.evalBroker.Enqueue(eval1) - return err == nil, err - }, func(err error) { - t.Fatalf("err: %v", err) - }) + s1.evalBroker.Enqueue(eval1) + evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) if err != nil { t.Fatalf("err: %v", err) @@ -473,4 +447,74 @@ if out.PreviousEval != eval1.ID { t.Fatalf("bad: %v", out) } + if out.SnapshotIndex != w.snapshotIndex { + t.Fatalf("bad: %v", out) + } +} + +func TestWorker_ReblockEval(t *testing.T) { + s1 := testServer(t, func(c *Config) { + c.NumSchedulers = 0 + c.EnabledSchedulers = []string{structs.JobTypeService} + }) + defer s1.Shutdown() + testutil.WaitForLeader(t, s1.RPC) + + // Create the blocked eval + eval1 := mock.Eval() + eval1.Status = structs.EvalStatusBlocked + + // Insert it into the state store + if err := s1.fsm.State().UpsertEvals(1000, []*structs.Evaluation{eval1}); err != nil { + t.Fatal(err) + } + + // Enqueue the eval and then dequeue + s1.evalBroker.Enqueue(eval1) + evalOut, token, err := s1.evalBroker.Dequeue([]string{eval1.Type}, time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if evalOut != eval1 { + t.Fatalf("Bad eval") + } + + eval2 := evalOut.Copy() + + // Attempt to reblock eval + w := &Worker{srv: s1, logger: s1.logger, evalToken: token} + err = w.ReblockEval(eval2) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ack the eval + w.sendAck(evalOut.ID, token, true) + + // Check that it is blocked + bStats := s1.blockedEvals.Stats() + if bStats.TotalBlocked+bStats.TotalEscaped != 1 { + t.Fatalf("ReblockEval didn't insert eval into the blocked eval tracker: %#v", bStats) + } + + // Check that the snapshot index was set properly by unblocking the eval and + // then dequeuing. + s1.blockedEvals.Unblock("foobar", 1000) + + reblockedEval, _, err := s1.evalBroker.Dequeue([]string{eval1.Type}, 1*time.Second) + if err != nil { + t.Fatalf("err: %v", err) + } + if reblockedEval == nil { + t.Fatalf("Nil eval") + } + if reblockedEval.ID != eval1.ID { + t.Fatalf("Bad eval") + } + + // Check that the SnapshotIndex is set + if reblockedEval.SnapshotIndex != w.snapshotIndex { + t.Fatalf("incorrect snapshot index; got %d; want %d", + reblockedEval.SnapshotIndex, w.snapshotIndex) + } } diff -Nru nomad-0.3.2+dfsg/scheduler/annotate.go nomad-0.4.0+dfsg/scheduler/annotate.go --- nomad-0.3.2+dfsg/scheduler/annotate.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/annotate.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,185 @@ +package scheduler + +import ( + "strconv" + + "github.com/hashicorp/nomad/nomad/structs" +) + +const ( + AnnotationForcesCreate = "forces create" + AnnotationForcesDestroy = "forces destroy" + AnnotationForcesInplaceUpdate = "forces in-place update" + AnnotationForcesDestructiveUpdate = "forces create/destroy update" +) + +// UpdateTypes denote the type of update to occur against the task group. +const ( + UpdateTypeIgnore = "ignore" + UpdateTypeCreate = "create" + UpdateTypeDestroy = "destroy" + UpdateTypeMigrate = "migrate" + UpdateTypeInplaceUpdate = "in-place update" + UpdateTypeDestructiveUpdate = "create/destroy update" +) + +// Annotate takes the diff between the old and new version of a Job, the +// scheduler's plan annotations and will add annotations to the diff to aide +// human understanding of the plan. +// +// Currently the things that are annotated are: +// * Task group changes will be annotated with: +// * Count up and count down changes +// * Update counts (creates, destroys, migrates, etc) +// * Task changes will be annotated with: +// * forces create/destroy update +// * forces in-place update +func Annotate(diff *structs.JobDiff, annotations *structs.PlanAnnotations) error { + tgDiffs := diff.TaskGroups + if len(tgDiffs) == 0 { + return nil + } + + for _, tgDiff := range tgDiffs { + if err := annotateTaskGroup(tgDiff, annotations); err != nil { + return err + } + } + + return nil +} + +// annotateTaskGroup takes a task group diff and annotates it. +func annotateTaskGroup(diff *structs.TaskGroupDiff, annotations *structs.PlanAnnotations) error { + // Annotate the updates + if annotations != nil { + tg, ok := annotations.DesiredTGUpdates[diff.Name] + if ok { + if diff.Updates == nil { + diff.Updates = make(map[string]uint64, 6) + } + + if tg.Ignore != 0 { + diff.Updates[UpdateTypeIgnore] = tg.Ignore + } + if tg.Place != 0 { + diff.Updates[UpdateTypeCreate] = tg.Place + } + if tg.Migrate != 0 { + diff.Updates[UpdateTypeMigrate] = tg.Migrate + } + if tg.Stop != 0 { + diff.Updates[UpdateTypeDestroy] = tg.Stop + } + if tg.InPlaceUpdate != 0 { + diff.Updates[UpdateTypeInplaceUpdate] = tg.InPlaceUpdate + } + if tg.DestructiveUpdate != 0 { + diff.Updates[UpdateTypeDestructiveUpdate] = tg.DestructiveUpdate + } + } + } + + // Annotate the count + if err := annotateCountChange(diff); err != nil { + return err + } + + // Annotate the tasks. + taskDiffs := diff.Tasks + if len(taskDiffs) == 0 { + return nil + } + + for _, taskDiff := range taskDiffs { + annotateTask(taskDiff, diff) + } + + return nil +} + +// annotateCountChange takes a task group diff and annotates the count +// parameter. +func annotateCountChange(diff *structs.TaskGroupDiff) error { + var countDiff *structs.FieldDiff + for _, diff := range diff.Fields { + if diff.Name == "Count" { + countDiff = diff + break + } + } + + // Didn't find + if countDiff == nil { + return nil + } + var oldV, newV int + var err error + if countDiff.Old == "" { + oldV = 0 + } else { + oldV, err = strconv.Atoi(countDiff.Old) + if err != nil { + return err + } + } + + if countDiff.New == "" { + newV = 0 + } else { + newV, err = strconv.Atoi(countDiff.New) + if err != nil { + return err + } + } + + if oldV < newV { + countDiff.Annotations = append(countDiff.Annotations, AnnotationForcesCreate) + } else if newV < oldV { + countDiff.Annotations = append(countDiff.Annotations, AnnotationForcesDestroy) + } + + return nil +} + +// annotateCountChange takes a task diff and annotates it. +func annotateTask(diff *structs.TaskDiff, parent *structs.TaskGroupDiff) { + if diff.Type == structs.DiffTypeNone { + return + } + + // The whole task group is changing + if parent.Type == structs.DiffTypeAdded || parent.Type == structs.DiffTypeDeleted { + if diff.Type == structs.DiffTypeAdded { + diff.Annotations = append(diff.Annotations, AnnotationForcesCreate) + return + } else if diff.Type == structs.DiffTypeDeleted { + diff.Annotations = append(diff.Annotations, AnnotationForcesDestroy) + return + } + } + + // All changes to primitive fields result in a destructive update. + destructive := false + if len(diff.Fields) != 0 { + destructive = true + } + + // Changes that can be done in-place are log configs, services and + // constraints. + for _, oDiff := range diff.Objects { + switch oDiff.Name { + case "LogConfig", "Service", "Constraint": + continue + default: + destructive = true + break + } + } + + if destructive { + diff.Annotations = append(diff.Annotations, AnnotationForcesDestructiveUpdate) + } else { + diff.Annotations = append(diff.Annotations, AnnotationForcesInplaceUpdate) + } +} diff -Nru nomad-0.3.2+dfsg/scheduler/annotate_test.go nomad-0.4.0+dfsg/scheduler/annotate_test.go --- nomad-0.3.2+dfsg/scheduler/annotate_test.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/annotate_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,422 @@ +package scheduler + +import ( + "reflect" + "testing" + + "github.com/hashicorp/nomad/nomad/structs" +) + +func TestAnnotateTaskGroup_Updates(t *testing.T) { + annotations := &structs.PlanAnnotations{ + DesiredTGUpdates: map[string]*structs.DesiredUpdates{ + "foo": &structs.DesiredUpdates{ + Ignore: 1, + Place: 2, + Migrate: 3, + Stop: 4, + InPlaceUpdate: 5, + DestructiveUpdate: 6, + }, + }, + } + + tgDiff := &structs.TaskGroupDiff{ + Type: structs.DiffTypeEdited, + Name: "foo", + } + expected := &structs.TaskGroupDiff{ + Type: structs.DiffTypeEdited, + Name: "foo", + Updates: map[string]uint64{ + UpdateTypeIgnore: 1, + UpdateTypeCreate: 2, + UpdateTypeMigrate: 3, + UpdateTypeDestroy: 4, + UpdateTypeInplaceUpdate: 5, + UpdateTypeDestructiveUpdate: 6, + }, + } + + if err := annotateTaskGroup(tgDiff, annotations); err != nil { + t.Fatalf("annotateTaskGroup(%#v, %#v) failed: %#v", tgDiff, annotations, err) + } + + if !reflect.DeepEqual(tgDiff, expected) { + t.Fatalf("got %#v, want %#v", tgDiff, expected) + } +} + +func TestAnnotateCountChange_NonEdited(t *testing.T) { + tg := &structs.TaskGroupDiff{} + tgOrig := &structs.TaskGroupDiff{} + annotateCountChange(tg) + if !reflect.DeepEqual(tgOrig, tg) { + t.Fatalf("annotateCountChange(%#v) should not have caused any annotation: %#v", tgOrig, tg) + } +} + +func TestAnnotateCountChange(t *testing.T) { + up := &structs.FieldDiff{ + Type: structs.DiffTypeEdited, + Name: "Count", + Old: "1", + New: "3", + } + down := &structs.FieldDiff{ + Type: structs.DiffTypeEdited, + Name: "Count", + Old: "3", + New: "1", + } + tgUp := &structs.TaskGroupDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{up}, + } + tgDown := &structs.TaskGroupDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{down}, + } + + // Test the up case + if err := annotateCountChange(tgUp); err != nil { + t.Fatalf("annotateCountChange(%#v) failed: %v", tgUp, err) + } + countDiff := tgUp.Fields[0] + if len(countDiff.Annotations) != 1 || countDiff.Annotations[0] != AnnotationForcesCreate { + t.Fatalf("incorrect annotation: %#v", tgUp) + } + + // Test the down case + if err := annotateCountChange(tgDown); err != nil { + t.Fatalf("annotateCountChange(%#v) failed: %v", tgDown, err) + } + countDiff = tgDown.Fields[0] + if len(countDiff.Annotations) != 1 || countDiff.Annotations[0] != AnnotationForcesDestroy { + t.Fatalf("incorrect annotation: %#v", tgDown) + } +} + +func TestAnnotateTask_NonEdited(t *testing.T) { + tgd := &structs.TaskGroupDiff{Type: structs.DiffTypeNone} + td := &structs.TaskDiff{Type: structs.DiffTypeNone} + tdOrig := &structs.TaskDiff{Type: structs.DiffTypeNone} + annotateTask(td, tgd) + if !reflect.DeepEqual(tdOrig, td) { + t.Fatalf("annotateTask(%#v) should not have caused any annotation: %#v", tdOrig, td) + } +} + +func TestAnnotateTask(t *testing.T) { + cases := []struct { + Diff *structs.TaskDiff + Parent *structs.TaskGroupDiff + Desired string + }{ + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeEdited, + Name: "Driver", + Old: "docker", + New: "exec", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeEdited, + Name: "User", + Old: "alice", + New: "bob", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Env[foo]", + Old: "foo", + New: "bar", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Meta[foo]", + Old: "foo", + New: "bar", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Artifact", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "GetterOptions[bam]", + Old: "", + New: "baz", + }, + { + Type: structs.DiffTypeAdded, + Name: "GetterSource", + Old: "", + New: "bam", + }, + { + Type: structs.DiffTypeAdded, + Name: "RelativeDest", + Old: "", + New: "bam", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeEdited, + Name: "Resources", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeEdited, + Name: "CPU", + Old: "100", + New: "200", + }, + { + Type: structs.DiffTypeEdited, + Name: "DiskMB", + Old: "100", + New: "200", + }, + { + Type: structs.DiffTypeEdited, + Name: "IOPS", + Old: "100", + New: "200", + }, + { + Type: structs.DiffTypeEdited, + Name: "MemoryMB", + Old: "100", + New: "200", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeEdited, + Name: "Config", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeEdited, + Name: "bam[1]", + Old: "b", + New: "c", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Constraint", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "LTarget", + Old: "", + New: "baz", + }, + { + Type: structs.DiffTypeAdded, + Name: "Operand", + Old: "", + New: "baz", + }, + { + Type: structs.DiffTypeAdded, + Name: "RTarget", + Old: "", + New: "baz", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesInplaceUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeAdded, + Name: "LogConfig", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "MaxFileSizeMB", + Old: "", + New: "10", + }, + { + Type: structs.DiffTypeAdded, + Name: "MaxFiles", + Old: "", + New: "1", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesInplaceUpdate, + }, + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeEdited, + Objects: []*structs.ObjectDiff{ + { + Type: structs.DiffTypeEdited, + Name: "Service", + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeEdited, + Name: "PortLabel", + Old: "baz", + New: "baz2", + }, + }, + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesInplaceUpdate, + }, + // Task deleted new parent + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeDeleted, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Driver", + Old: "", + New: "exec", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeAdded}, + Desired: AnnotationForcesDestroy, + }, + // Task Added new parent + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeAdded, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Driver", + Old: "", + New: "exec", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeAdded}, + Desired: AnnotationForcesCreate, + }, + // Task deleted existing parent + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeDeleted, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Driver", + Old: "", + New: "exec", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + // Task Added existing parent + { + Diff: &structs.TaskDiff{ + Type: structs.DiffTypeAdded, + Fields: []*structs.FieldDiff{ + { + Type: structs.DiffTypeAdded, + Name: "Driver", + Old: "", + New: "exec", + }, + }, + }, + Parent: &structs.TaskGroupDiff{Type: structs.DiffTypeEdited}, + Desired: AnnotationForcesDestructiveUpdate, + }, + } + + for i, c := range cases { + annotateTask(c.Diff, c.Parent) + if len(c.Diff.Annotations) != 1 || c.Diff.Annotations[0] != c.Desired { + t.Fatalf("case %d not properly annotated; got %s, want %s", i+1, c.Diff.Annotations[0], c.Desired) + } + } +} diff -Nru nomad-0.3.2+dfsg/scheduler/context.go nomad-0.4.0+dfsg/scheduler/context.go --- nomad-0.3.2+dfsg/scheduler/context.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/context.go 2016-06-28 21:26:34.000000000 +0000 @@ -151,7 +151,7 @@ const ( // EvalComputedClassUnknown is the initial state until the eligibility has - // been explicitely marked to eligible/ineligible or escaped. + // been explicitly marked to eligible/ineligible or escaped. EvalComputedClassUnknown ComputedClassFeasibility = iota // EvalComputedClassIneligible is used to mark the computed class as diff -Nru nomad-0.3.2+dfsg/scheduler/feasible.go nomad-0.4.0+dfsg/scheduler/feasible.go --- nomad-0.3.2+dfsg/scheduler/feasible.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/feasible.go 2016-06-28 21:26:34.000000000 +0000 @@ -389,7 +389,7 @@ return false } - // Parse the verison + // Parse the version vers, err := version.NewVersion(versionStr) if err != nil { return false diff -Nru nomad-0.3.2+dfsg/scheduler/generic_sched.go nomad-0.4.0+dfsg/scheduler/generic_sched.go --- nomad-0.3.2+dfsg/scheduler/generic_sched.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/generic_sched.go 2016-06-28 21:26:34.000000000 +0000 @@ -29,6 +29,14 @@ // allocInPlace is the status used when speculating on an in-place update allocInPlace = "alloc updating in-place" + + // blockedEvalMaxPlanDesc is the description used for blocked evals that are + // a result of hitting the max number of plan attempts + blockedEvalMaxPlanDesc = "created due to placement conflicts" + + // blockedEvalFailedPlacements is the description used for blocked evals + // that are a result of failing to place all allocations. + blockedEvalFailedPlacements = "created to place remaining allocations" ) // SetStatusError is used to set the status of the evaluation to the given error @@ -62,7 +70,8 @@ limitReached bool nextEval *structs.Evaluation - blocked *structs.Evaluation + blocked *structs.Evaluation + failedTGAllocs map[string]*structs.AllocMetric } // NewServiceScheduler is a factory function to instantiate a new service scheduler @@ -96,11 +105,12 @@ switch eval.TriggeredBy { case structs.EvalTriggerJobRegister, structs.EvalTriggerNodeUpdate, structs.EvalTriggerJobDeregister, structs.EvalTriggerRollingUpdate, - structs.EvalTriggerPeriodicJob: + structs.EvalTriggerPeriodicJob, structs.EvalTriggerMaxPlans: default: desc := fmt.Sprintf("scheduler cannot handle '%s' evaluation reason", eval.TriggeredBy) - return setStatus(s.logger, s.planner, s.eval, s.nextEval, structs.EvalStatusFailed, desc) + return setStatus(s.logger, s.planner, s.eval, s.nextEval, s.blocked, + s.failedTGAllocs, structs.EvalStatusFailed, desc) } // Retry up to the maxScheduleAttempts and reset if progress is made. @@ -114,10 +124,11 @@ // Scheduling was tried but made no forward progress so create a // blocked eval to retry once resources become available. var mErr multierror.Error - if err := s.createBlockedEval(); err != nil { + if err := s.createBlockedEval(true); err != nil { mErr.Errors = append(mErr.Errors, err) } - if err := setStatus(s.logger, s.planner, s.eval, s.nextEval, statusErr.EvalStatus, err.Error()); err != nil { + if err := setStatus(s.logger, s.planner, s.eval, s.nextEval, s.blocked, + s.failedTGAllocs, statusErr.EvalStatus, err.Error()); err != nil { mErr.Errors = append(mErr.Errors, err) } return mErr.ErrorOrNil() @@ -125,12 +136,24 @@ return err } + // If the current evaluation is a blocked evaluation and we didn't place + // everything, do not update the status to complete. + if s.eval.Status == structs.EvalStatusBlocked && len(s.failedTGAllocs) != 0 { + e := s.ctx.Eligibility() + newEval := s.eval.Copy() + newEval.EscapedComputedClass = e.HasEscaped() + newEval.ClassEligibility = e.GetClasses() + return s.planner.ReblockEval(newEval) + } + // Update the status to complete - return setStatus(s.logger, s.planner, s.eval, s.nextEval, structs.EvalStatusComplete, "") + return setStatus(s.logger, s.planner, s.eval, s.nextEval, s.blocked, + s.failedTGAllocs, structs.EvalStatusComplete, "") } -// createBlockedEval creates a blocked eval and stores it. -func (s *GenericScheduler) createBlockedEval() error { +// createBlockedEval creates a blocked eval and submits it to the planner. If +// failure is set to true, the eval's trigger reason reflects that. +func (s *GenericScheduler) createBlockedEval(planFailure bool) error { e := s.ctx.Eligibility() escaped := e.HasEscaped() @@ -140,7 +163,14 @@ classEligibility = e.GetClasses() } - s.blocked = s.eval.BlockedEval(classEligibility, escaped) + s.blocked = s.eval.CreateBlockedEval(classEligibility, escaped) + if planFailure { + s.blocked.TriggeredBy = structs.EvalTriggerMaxPlans + s.blocked.StatusDescription = blockedEvalMaxPlanDesc + } else { + s.blocked.StatusDescription = blockedEvalFailedPlacements + } + return s.planner.CreateEval(s.blocked) } @@ -158,6 +188,9 @@ // Create a plan s.plan = s.eval.MakePlan(s.job) + // Reset the failed allocations + s.failedTGAllocs = nil + // Create an evaluation context s.ctx = NewEvalContext(s.state, s.plan, s.logger) @@ -173,8 +206,20 @@ return false, err } - // If the plan is a no-op, we can bail - if s.plan.IsNoOp() { + // If there are failed allocations, we need to create a blocked evaluation + // to place the failed allocations when resources become available. If the + // current evaluation is already a blocked eval, we reuse it. + if s.eval.Status != structs.EvalStatusBlocked && len(s.failedTGAllocs) != 0 && s.blocked == nil { + if err := s.createBlockedEval(false); err != nil { + s.logger.Printf("[ERR] sched: %#v failed to make blocked eval: %v", s.eval, err) + return false, err + } + s.logger.Printf("[DEBUG] sched: %#v: failed to place all allocations, blocked eval '%s' created", s.eval, s.blocked.ID) + } + + // If the plan is a no-op, we can bail. If AnnotatePlan is set submit the plan + // anyways to get the annotations. + if s.plan.IsNoOp() && !s.eval.AnnotatePlan { return true, nil } @@ -189,16 +234,6 @@ s.logger.Printf("[DEBUG] sched: %#v: rolling update limit reached, next eval '%s' created", s.eval, s.nextEval.ID) } - // If there are failed allocations, we need to create a blocked evaluation - // to place the failed allocations when resources become available. - if len(s.plan.FailedAllocs) != 0 && s.blocked == nil { - if err := s.createBlockedEval(); err != nil { - s.logger.Printf("[ERR] sched: %#v failed to make blocked eval: %v", s.eval, err) - return false, err - } - s.logger.Printf("[DEBUG] sched: %#v: failed to place all allocations, blocked eval '%s' created", s.eval, s.blocked.ID) - } - // Submit the plan and store the results. result, newState, err := s.planner.SubmitPlan(s.plan) s.planResult = result @@ -234,12 +269,12 @@ filter := func(a *structs.Allocation) bool { if s.batch { // Allocs from batch jobs should be filtered when the desired status - // is terminal or when the client status is failed so that they will - // be replaced. If they are complete but not failed, they shouldn't - // be replaced. + // is terminal and the client did not finish or when the client + // status is failed so that they will be replaced. If they are + // complete but not failed, they shouldn't be replaced. switch a.DesiredStatus { case structs.AllocDesiredStatusStop, structs.AllocDesiredStatusEvict, structs.AllocDesiredStatusFailed: - return true + return !a.RanSuccessfully() default: } @@ -323,7 +358,14 @@ } // Attempt to do the upgrades in place - diff.update = inplaceUpdate(s.ctx, s.eval, s.job, s.stack, diff.update) + destructiveUpdates, inplaceUpdates := inplaceUpdate(s.ctx, s.eval, s.job, s.stack, diff.update) + diff.update = destructiveUpdates + + if s.eval.AnnotatePlan { + s.plan.Annotations = &structs.PlanAnnotations{ + DesiredTGUpdates: desiredUpdates(diff, inplaceUpdates, destructiveUpdates), + } + } // Check if a rolling upgrade strategy is being used limit := len(diff.update) + len(diff.migrate) @@ -357,50 +399,43 @@ // Update the set of placement ndoes s.stack.SetNodes(nodes) - // Track the failed task groups so that we can coalesce - // the failures together to avoid creating many failed allocs. - failedTG := make(map[*structs.TaskGroup]*structs.Allocation) - for _, missing := range place { // Check if this task group has already failed - if alloc, ok := failedTG[missing.TaskGroup]; ok { - alloc.Metrics.CoalescedFailures += 1 + if metric, ok := s.failedTGAllocs[missing.TaskGroup.Name]; ok { + metric.CoalescedFailures += 1 continue } // Attempt to match the task group option, _ := s.stack.Select(missing.TaskGroup) - // Create an allocation for this - alloc := &structs.Allocation{ - ID: structs.GenerateUUID(), - EvalID: s.eval.ID, - Name: missing.Name, - JobID: s.job.ID, - TaskGroup: missing.TaskGroup.Name, - Metrics: s.ctx.Metrics(), - } - // Store the available nodes by datacenter s.ctx.Metrics().NodesAvailable = byDC // Set fields based on if we found an allocation option if option != nil { - // Generate service IDs tasks in this allocation - // COMPAT - This is no longer required and would be removed in v0.4 - alloc.PopulateServiceIDs(missing.TaskGroup) - - alloc.NodeID = option.Node.ID - alloc.TaskResources = option.TaskResources - alloc.DesiredStatus = structs.AllocDesiredStatusRun - alloc.ClientStatus = structs.AllocClientStatusPending + // Create an allocation for this + alloc := &structs.Allocation{ + ID: structs.GenerateUUID(), + EvalID: s.eval.ID, + Name: missing.Name, + JobID: s.job.ID, + TaskGroup: missing.TaskGroup.Name, + Metrics: s.ctx.Metrics(), + NodeID: option.Node.ID, + TaskResources: option.TaskResources, + DesiredStatus: structs.AllocDesiredStatusRun, + ClientStatus: structs.AllocClientStatusPending, + } + s.plan.AppendAlloc(alloc) } else { - alloc.DesiredStatus = structs.AllocDesiredStatusFailed - alloc.DesiredDescription = "failed to find a node for placement" - alloc.ClientStatus = structs.AllocClientStatusFailed - s.plan.AppendFailed(alloc) - failedTG[missing.TaskGroup] = alloc + // Lazy initialize the failed map + if s.failedTGAllocs == nil { + s.failedTGAllocs = make(map[string]*structs.AllocMetric) + } + + s.failedTGAllocs[missing.TaskGroup.Name] = s.ctx.Metrics() } } diff -Nru nomad-0.3.2+dfsg/scheduler/generic_sched_test.go nomad-0.4.0+dfsg/scheduler/generic_sched_test.go --- nomad-0.3.2+dfsg/scheduler/generic_sched_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/generic_sched_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -2,6 +2,7 @@ import ( "fmt" + "reflect" "testing" "time" @@ -42,6 +43,19 @@ } plan := h.Plans[0] + // Ensure the plan doesn't have annotations. + if plan.Annotations != nil { + t.Fatalf("expected no annotations") + } + + // Ensure the eval has no spawned blocked eval + if len(h.Evals) != 1 { + t.Fatalf("bad: %#v", h.Evals) + if h.Evals[0].BlockedEval != "" { + t.Fatalf("bad: %#v", h.Evals[0]) + } + } + // Ensure the plan allocated var planned []*structs.Allocation for _, allocList := range plan.NodeAllocation { @@ -76,6 +90,81 @@ h.AssertEvalStatus(t, structs.EvalStatusComplete) } +func TestServiceSched_JobRegister_Annotate(t *testing.T) { + h := NewHarness(t) + + // Create some nodes + for i := 0; i < 10; i++ { + node := mock.Node() + noErr(t, h.State.UpsertNode(h.NextIndex(), node)) + } + + // Create a job + job := mock.Job() + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a mock evaluation to register the job + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: job.ID, + AnnotatePlan: true, + } + + // Process the evaluation + err := h.Process(NewServiceScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure a single plan + if len(h.Plans) != 1 { + t.Fatalf("bad: %#v", h.Plans) + } + plan := h.Plans[0] + + // Ensure the plan allocated + var planned []*structs.Allocation + for _, allocList := range plan.NodeAllocation { + planned = append(planned, allocList...) + } + if len(planned) != 10 { + t.Fatalf("bad: %#v", plan) + } + + // Lookup the allocations by JobID + out, err := h.State.AllocsByJob(job.ID) + noErr(t, err) + + // Ensure all allocations placed + if len(out) != 10 { + t.Fatalf("bad: %#v", out) + } + + h.AssertEvalStatus(t, structs.EvalStatusComplete) + + // Ensure the plan had annotations. + if plan.Annotations == nil { + t.Fatalf("expected annotations") + } + + desiredTGs := plan.Annotations.DesiredTGUpdates + if l := len(desiredTGs); l != 1 { + t.Fatalf("incorrect number of task groups; got %v; want %v", l, 1) + } + + desiredChanges, ok := desiredTGs["web"] + if !ok { + t.Fatalf("expected task group web to have desired changes") + } + + expected := &structs.DesiredUpdates{Place: 10} + if !reflect.DeepEqual(desiredChanges, expected) { + t.Fatalf("Unexpected desired updates; got %#v; want %#v", desiredChanges, expected) + } +} + func TestServiceSched_JobRegister_CountZero(t *testing.T) { h := NewHarness(t) @@ -143,45 +232,50 @@ t.Fatalf("err: %v", err) } - // Ensure a single plan - if len(h.Plans) != 1 { + // Ensure no plan + if len(h.Plans) != 0 { t.Fatalf("bad: %#v", h.Plans) } - plan := h.Plans[0] - // Ensure the plan has created a follow up eval. + // Ensure there is a follow up eval. if len(h.CreateEvals) != 1 || h.CreateEvals[0].Status != structs.EvalStatusBlocked { t.Fatalf("bad: %#v", h.CreateEvals) } - // Ensure the plan failed to alloc - if len(plan.FailedAllocs) != 1 { - t.Fatalf("bad: %#v", plan) + if len(h.Evals) != 1 { + t.Fatalf("incorrect number of updated eval: %#v", h.Evals) } + outEval := h.Evals[0] - // Lookup the allocations by JobID - out, err := h.State.AllocsByJob(job.ID) - noErr(t, err) + // Ensure the eval has its spawned blocked eval + if outEval.BlockedEval != h.CreateEvals[0].ID { + t.Fatalf("bad: %#v", outEval) + } - // Ensure all allocations placed - if len(out) != 1 { - t.Fatalf("bad: %#v", out) + // Ensure the plan failed to alloc + if outEval == nil || len(outEval.FailedTGAllocs) != 1 { + t.Fatalf("bad: %#v", outEval) + } + + metrics, ok := outEval.FailedTGAllocs[job.TaskGroups[0].Name] + if !ok { + t.Fatalf("no failed metrics: %#v", outEval.FailedTGAllocs) } // Check the coalesced failures - if out[0].Metrics.CoalescedFailures != 9 { - t.Fatalf("bad: %#v", out[0].Metrics) + if metrics.CoalescedFailures != 9 { + t.Fatalf("bad: %#v", metrics) } // Check the available nodes - if count, ok := out[0].Metrics.NodesAvailable["dc1"]; !ok || count != 0 { - t.Fatalf("bad: %#v", out[0].Metrics) + if count, ok := metrics.NodesAvailable["dc1"]; !ok || count != 0 { + t.Fatalf("bad: %#v", metrics) } h.AssertEvalStatus(t, structs.EvalStatusComplete) } -func TestServiceSched_JobRegister_BlockedEval(t *testing.T) { +func TestServiceSched_JobRegister_CreateBlockedEval(t *testing.T) { h := NewHarness(t) // Create a full node @@ -214,11 +308,10 @@ t.Fatalf("err: %v", err) } - // Ensure a single plan - if len(h.Plans) != 1 { + // Ensure no plan + if len(h.Plans) != 0 { t.Fatalf("bad: %#v", h.Plans) } - plan := h.Plans[0] // Ensure the plan has created a follow up eval. if len(h.CreateEvals) != 1 { @@ -239,31 +332,34 @@ t.Fatalf("bad: %#v", created) } - // Ensure the plan failed to alloc - if len(plan.FailedAllocs) != 1 { - t.Fatalf("bad: %#v", plan) + // Ensure there is a follow up eval. + if len(h.CreateEvals) != 1 || h.CreateEvals[0].Status != structs.EvalStatusBlocked { + t.Fatalf("bad: %#v", h.CreateEvals) } - // Lookup the allocations by JobID - out, err := h.State.AllocsByJob(job.ID) - noErr(t, err) + if len(h.Evals) != 1 { + t.Fatalf("incorrect number of updated eval: %#v", h.Evals) + } + outEval := h.Evals[0] - // Ensure all allocations placed - if len(out) != 1 { - for _, a := range out { - t.Logf("%#v", a) - } - t.Fatalf("bad: %#v", out) + // Ensure the plan failed to alloc + if outEval == nil || len(outEval.FailedTGAllocs) != 1 { + t.Fatalf("bad: %#v", outEval) + } + + metrics, ok := outEval.FailedTGAllocs[job.TaskGroups[0].Name] + if !ok { + t.Fatalf("no failed metrics: %#v", outEval.FailedTGAllocs) } // Check the coalesced failures - if out[0].Metrics.CoalescedFailures != 9 { - t.Fatalf("bad: %#v", out[0].Metrics) + if metrics.CoalescedFailures != 9 { + t.Fatalf("bad: %#v", metrics) } // Check the available nodes - if count, ok := out[0].Metrics.NodesAvailable["dc1"]; !ok || count != 2 { - t.Fatalf("bad: %#v", out[0].Metrics) + if count, ok := metrics.NodesAvailable["dc1"]; !ok || count != 2 { + t.Fatalf("bad: %#v", metrics) } h.AssertEvalStatus(t, structs.EvalStatusComplete) @@ -322,7 +418,178 @@ if len(planned) != 2 { t.Fatalf("bad: %#v", plan) } - if len(plan.FailedAllocs) != 1 { + + // Ensure two allocations placed + out, err := h.State.AllocsByJob(job.ID) + noErr(t, err) + if len(out) != 2 { + t.Fatalf("bad: %#v", out) + } + + if len(h.Evals) != 1 { + t.Fatalf("incorrect number of updated eval: %#v", h.Evals) + } + outEval := h.Evals[0] + + // Ensure the eval has its spawned blocked eval + if outEval.BlockedEval != h.CreateEvals[0].ID { + t.Fatalf("bad: %#v", outEval) + } + + // Ensure the plan failed to alloc one tg + if outEval == nil || len(outEval.FailedTGAllocs) != 1 { + t.Fatalf("bad: %#v", outEval) + } + + metrics, ok := outEval.FailedTGAllocs[tg2.Name] + if !ok { + t.Fatalf("no failed metrics: %#v", outEval.FailedTGAllocs) + } + + // Check the coalesced failures + if metrics.CoalescedFailures != tg2.Count-1 { + t.Fatalf("bad: %#v", metrics) + } + + h.AssertEvalStatus(t, structs.EvalStatusComplete) +} + +// This test just ensures the scheduler handles the eval type to avoid +// regressions. +func TestServiceSched_EvaluateMaxPlanEval(t *testing.T) { + h := NewHarness(t) + + // Create a job and set the task group count to zero. + job := mock.Job() + job.TaskGroups[0].Count = 0 + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a mock blocked evaluation + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Status: structs.EvalStatusBlocked, + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerMaxPlans, + JobID: job.ID, + } + + // Insert it into the state store + noErr(t, h.State.UpsertEvals(h.NextIndex(), []*structs.Evaluation{eval})) + + // Process the evaluation + err := h.Process(NewServiceScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure there was no plan + if len(h.Plans) != 0 { + t.Fatalf("bad: %#v", h.Plans) + } + + h.AssertEvalStatus(t, structs.EvalStatusComplete) +} + +func TestServiceSched_EvaluateBlockedEval(t *testing.T) { + h := NewHarness(t) + + // Create a job + job := mock.Job() + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a mock blocked evaluation + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Status: structs.EvalStatusBlocked, + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: job.ID, + } + + // Insert it into the state store + noErr(t, h.State.UpsertEvals(h.NextIndex(), []*structs.Evaluation{eval})) + + // Process the evaluation + err := h.Process(NewServiceScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure there was no plan + if len(h.Plans) != 0 { + t.Fatalf("bad: %#v", h.Plans) + } + + // Ensure that the eval was reblocked + if len(h.ReblockEvals) != 1 { + t.Fatalf("bad: %#v", h.ReblockEvals) + } + if h.ReblockEvals[0].ID != eval.ID { + t.Fatalf("expect same eval to be reblocked; got %q; want %q", h.ReblockEvals[0].ID, eval.ID) + } + + // Ensure the eval status was not updated + if len(h.Evals) != 0 { + t.Fatalf("Existing eval should not have status set") + } +} + +func TestServiceSched_EvaluateBlockedEval_Finished(t *testing.T) { + h := NewHarness(t) + + // Create some nodes + for i := 0; i < 10; i++ { + node := mock.Node() + noErr(t, h.State.UpsertNode(h.NextIndex(), node)) + } + + // Create a job and set the task group count to zero. + job := mock.Job() + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a mock blocked evaluation + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Status: structs.EvalStatusBlocked, + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: job.ID, + } + + // Insert it into the state store + noErr(t, h.State.UpsertEvals(h.NextIndex(), []*structs.Evaluation{eval})) + + // Process the evaluation + err := h.Process(NewServiceScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure a single plan + if len(h.Plans) != 1 { + t.Fatalf("bad: %#v", h.Plans) + } + plan := h.Plans[0] + + // Ensure the plan doesn't have annotations. + if plan.Annotations != nil { + t.Fatalf("expected no annotations") + } + + // Ensure the eval has no spawned blocked eval + if len(h.Evals) != 1 { + t.Fatalf("bad: %#v", h.Evals) + if h.Evals[0].BlockedEval != "" { + t.Fatalf("bad: %#v", h.Evals[0]) + } + } + + // Ensure the plan allocated + var planned []*structs.Allocation + for _, allocList := range plan.NodeAllocation { + planned = append(planned, allocList...) + } + if len(planned) != 10 { t.Fatalf("bad: %#v", plan) } @@ -331,10 +598,15 @@ noErr(t, err) // Ensure all allocations placed - if len(out) != 3 { + if len(out) != 10 { t.Fatalf("bad: %#v", out) } + // Ensure the eval was not reblocked + if len(h.ReblockEvals) != 0 { + t.Fatalf("Existing eval should not have been reblocked as it placed all allocations") + } + h.AssertEvalStatus(t, structs.EvalStatusComplete) } @@ -505,9 +777,13 @@ t.Fatalf("bad: %#v", plan) } - // Ensure the plan didn't to alloc - if len(plan.FailedAllocs) != 0 { - t.Fatalf("bad: %#v", plan) + // Ensure the plan had no failures + if len(h.Evals) != 1 { + t.Fatalf("incorrect number of updated eval: %#v", h.Evals) + } + outEval := h.Evals[0] + if outEval == nil || len(outEval.FailedTGAllocs) != 0 { + t.Fatalf("bad: %#v", outEval) } // Lookup the allocations by JobID @@ -1233,5 +1509,73 @@ t.Fatalf("bad: %#v", out) } + h.AssertEvalStatus(t, structs.EvalStatusComplete) +} + +func TestBatchSched_ReRun_SuccessfullyFinishedAlloc(t *testing.T) { + h := NewHarness(t) + + // Create two nodes, one that is drained and has a successfully finished + // alloc and a fresh undrained one + node := mock.Node() + node.Drain = true + node2 := mock.Node() + noErr(t, h.State.UpsertNode(h.NextIndex(), node)) + noErr(t, h.State.UpsertNode(h.NextIndex(), node2)) + + // Create a job + job := mock.Job() + job.Type = structs.JobTypeBatch + job.TaskGroups[0].Count = 1 + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a successful alloc + alloc := mock.Alloc() + alloc.Job = job + alloc.JobID = job.ID + alloc.NodeID = node.ID + alloc.Name = "my-job.web[0]" + alloc.ClientStatus = structs.AllocClientStatusComplete + alloc.TaskStates = map[string]*structs.TaskState{ + "web": &structs.TaskState{ + State: structs.TaskStateDead, + Events: []*structs.TaskEvent{ + { + Type: structs.TaskTerminated, + ExitCode: 0, + }, + }, + }, + } + noErr(t, h.State.UpsertAllocs(h.NextIndex(), []*structs.Allocation{alloc})) + + // Create a mock evaluation to rerun the job + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: job.ID, + } + + // Process the evaluation + err := h.Process(NewBatchScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure no plan + if len(h.Plans) != 0 { + t.Fatalf("bad: %#v", h.Plans) + } + + // Lookup the allocations by JobID + out, err := h.State.AllocsByJob(job.ID) + noErr(t, err) + + // Ensure no replacement alloc was placed. + if len(out) != 1 { + t.Fatalf("bad: %#v", out) + } + h.AssertEvalStatus(t, structs.EvalStatusComplete) } diff -Nru nomad-0.3.2+dfsg/scheduler/scheduler.go nomad-0.4.0+dfsg/scheduler/scheduler.go --- nomad-0.3.2+dfsg/scheduler/scheduler.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/scheduler.go 2016-06-28 21:26:34.000000000 +0000 @@ -87,4 +87,10 @@ // CreateEval is used to create an evaluation. This should set the // PreviousEval to that of the current evaluation. CreateEval(*structs.Evaluation) error + + // ReblockEval takes a blocked evaluation and re-inserts it into the blocked + // evaluation tracker. This update occurs only in-memory on the leader. The + // evaluation must exist in a blocked state prior to this being called such + // that on leader changes, the evaluation will be reblocked properly. + ReblockEval(*structs.Evaluation) error } diff -Nru nomad-0.3.2+dfsg/scheduler/scheduler_test.go nomad-0.4.0+dfsg/scheduler/scheduler_test.go --- nomad-0.3.2+dfsg/scheduler/scheduler_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/scheduler_test.go 1970-01-01 00:00:00.000000000 +0000 @@ -1,187 +0,0 @@ -package scheduler - -import ( - "log" - "os" - "sync" - "testing" - - "github.com/hashicorp/nomad/nomad/state" - "github.com/hashicorp/nomad/nomad/structs" -) - -// RejectPlan is used to always reject the entire plan and force a state refresh -type RejectPlan struct { - Harness *Harness -} - -func (r *RejectPlan) SubmitPlan(*structs.Plan) (*structs.PlanResult, State, error) { - result := new(structs.PlanResult) - result.RefreshIndex = r.Harness.NextIndex() - return result, r.Harness.State, nil -} - -func (r *RejectPlan) UpdateEval(eval *structs.Evaluation) error { - return nil -} - -func (r *RejectPlan) CreateEval(*structs.Evaluation) error { - return nil -} - -// Harness is a lightweight testing harness for schedulers. -// It manages a state store copy and provides the planner -// interface. It can be extended for various testing uses. -type Harness struct { - State *state.StateStore - - Planner Planner - planLock sync.Mutex - - Plans []*structs.Plan - Evals []*structs.Evaluation - CreateEvals []*structs.Evaluation - - nextIndex uint64 - nextIndexLock sync.Mutex -} - -// NewHarness is used to make a new testing harness -func NewHarness(t *testing.T) *Harness { - state, err := state.NewStateStore(os.Stderr) - if err != nil { - t.Fatalf("err: %v", err) - } - - h := &Harness{ - State: state, - nextIndex: 1, - } - return h -} - -// SubmitPlan is used to handle plan submission -func (h *Harness) SubmitPlan(plan *structs.Plan) (*structs.PlanResult, State, error) { - // Ensure sequential plan application - h.planLock.Lock() - defer h.planLock.Unlock() - - // Store the plan - h.Plans = append(h.Plans, plan) - - // Check for custom planner - if h.Planner != nil { - return h.Planner.SubmitPlan(plan) - } - - // Get the index - index := h.NextIndex() - - // Prepare the result - result := new(structs.PlanResult) - result.NodeUpdate = plan.NodeUpdate - result.NodeAllocation = plan.NodeAllocation - result.AllocIndex = index - - // Flatten evicts and allocs - var allocs []*structs.Allocation - for _, updateList := range plan.NodeUpdate { - allocs = append(allocs, updateList...) - } - for _, allocList := range plan.NodeAllocation { - allocs = append(allocs, allocList...) - } - allocs = append(allocs, plan.FailedAllocs...) - - // Attach the plan to all the allocations. It is pulled out in the - // payload to avoid the redundancy of encoding, but should be denormalized - // prior to being inserted into MemDB. - if j := plan.Job; j != nil { - for _, alloc := range allocs { - if alloc.Job == nil { - alloc.Job = j - } - } - } - - // Apply the full plan - err := h.State.UpsertAllocs(index, allocs) - return result, nil, err -} - -func (h *Harness) UpdateEval(eval *structs.Evaluation) error { - // Ensure sequential plan application - h.planLock.Lock() - defer h.planLock.Unlock() - - // Store the eval - h.Evals = append(h.Evals, eval) - - // Check for custom planner - if h.Planner != nil { - return h.Planner.UpdateEval(eval) - } - return nil -} - -func (h *Harness) CreateEval(eval *structs.Evaluation) error { - // Ensure sequential plan application - h.planLock.Lock() - defer h.planLock.Unlock() - - // Store the eval - h.CreateEvals = append(h.CreateEvals, eval) - - // Check for custom planner - if h.Planner != nil { - return h.Planner.CreateEval(eval) - } - return nil -} - -// NextIndex returns the next index -func (h *Harness) NextIndex() uint64 { - h.nextIndexLock.Lock() - defer h.nextIndexLock.Unlock() - idx := h.nextIndex - h.nextIndex += 1 - return idx -} - -// Snapshot is used to snapshot the current state -func (h *Harness) Snapshot() State { - snap, _ := h.State.Snapshot() - return snap -} - -// Scheduler is used to return a new scheduler from -// a snapshot of current state using the harness for planning. -func (h *Harness) Scheduler(factory Factory) Scheduler { - logger := log.New(os.Stderr, "", log.LstdFlags) - return factory(logger, h.Snapshot(), h) -} - -// Process is used to process an evaluation given a factory -// function to create the scheduler -func (h *Harness) Process(factory Factory, eval *structs.Evaluation) error { - sched := h.Scheduler(factory) - return sched.Process(eval) -} - -func (h *Harness) AssertEvalStatus(t *testing.T, state string) { - if len(h.Evals) != 1 { - t.Fatalf("bad: %#v", h.Evals) - } - update := h.Evals[0] - - if update.Status != state { - t.Fatalf("bad: %#v", update) - } -} - -// noErr is used to assert there are no errors -func noErr(t *testing.T, err error) { - if err != nil { - t.Fatalf("err: %v", err) - } -} diff -Nru nomad-0.3.2+dfsg/scheduler/select.go nomad-0.4.0+dfsg/scheduler/select.go --- nomad-0.3.2+dfsg/scheduler/select.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/select.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,7 +1,7 @@ package scheduler // LimitIterator is a RankIterator used to limit the number of options -// that are returned before we artifically end the stream. +// that are returned before we artificially end the stream. type LimitIterator struct { ctx Context source RankIterator diff -Nru nomad-0.3.2+dfsg/scheduler/system_sched.go nomad-0.4.0+dfsg/scheduler/system_sched.go --- nomad-0.3.2+dfsg/scheduler/system_sched.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/system_sched.go 2016-06-28 21:26:34.000000000 +0000 @@ -36,6 +36,8 @@ limitReached bool nextEval *structs.Evaluation + + failedTGAllocs map[string]*structs.AllocMetric } // NewSystemScheduler is a factory function to instantiate a new system @@ -60,20 +62,20 @@ default: desc := fmt.Sprintf("scheduler cannot handle '%s' evaluation reason", eval.TriggeredBy) - return setStatus(s.logger, s.planner, s.eval, s.nextEval, structs.EvalStatusFailed, desc) + return setStatus(s.logger, s.planner, s.eval, s.nextEval, nil, s.failedTGAllocs, structs.EvalStatusFailed, desc) } // Retry up to the maxSystemScheduleAttempts and reset if progress is made. progress := func() bool { return progressMade(s.planResult) } if err := retryMax(maxSystemScheduleAttempts, s.process, progress); err != nil { if statusErr, ok := err.(*SetStatusError); ok { - return setStatus(s.logger, s.planner, s.eval, s.nextEval, statusErr.EvalStatus, err.Error()) + return setStatus(s.logger, s.planner, s.eval, s.nextEval, nil, s.failedTGAllocs, statusErr.EvalStatus, err.Error()) } return err } // Update the status to complete - return setStatus(s.logger, s.planner, s.eval, s.nextEval, structs.EvalStatusComplete, "") + return setStatus(s.logger, s.planner, s.eval, s.nextEval, nil, s.failedTGAllocs, structs.EvalStatusComplete, "") } // process is wrapped in retryMax to iteratively run the handler until we have no @@ -98,6 +100,9 @@ // Create a plan s.plan = s.eval.MakePlan(s.job) + // Reset the failed allocations + s.failedTGAllocs = nil + // Create an evaluation context s.ctx = NewEvalContext(s.state, s.plan, s.logger) @@ -113,8 +118,9 @@ return false, err } - // If the plan is a no-op, we can bail - if s.plan.IsNoOp() { + // If the plan is a no-op, we can bail. If AnnotatePlan is set submit the plan + // anyways to get the annotations. + if s.plan.IsNoOp() && !s.eval.AnnotatePlan { return true, nil } @@ -185,7 +191,14 @@ } // Attempt to do the upgrades in place - diff.update = inplaceUpdate(s.ctx, s.eval, s.job, s.stack, diff.update) + destructiveUpdates, inplaceUpdates := inplaceUpdate(s.ctx, s.eval, s.job, s.stack, diff.update) + diff.update = destructiveUpdates + + if s.eval.AnnotatePlan { + s.plan.Annotations = &structs.PlanAnnotations{ + DesiredTGUpdates: desiredUpdates(diff, inplaceUpdates, destructiveUpdates), + } + } // Check if a rolling upgrade strategy is being used limit := len(diff.update) @@ -212,10 +225,6 @@ nodeByID[node.ID] = node } - // Track the failed task groups so that we can coalesce - // the failures together to avoid creating many failed allocs. - failedTG := make(map[*structs.TaskGroup]*structs.Allocation) - nodes := make([]*structs.Node, 1) for _, missing := range place { node, ok := nodeByID[missing.Alloc.NodeID] @@ -232,43 +241,41 @@ if option == nil { // Check if this task group has already failed - if alloc, ok := failedTG[missing.TaskGroup]; ok { - alloc.Metrics.CoalescedFailures += 1 + if metric, ok := s.failedTGAllocs[missing.TaskGroup.Name]; ok { + metric.CoalescedFailures += 1 continue } } - // Create an allocation for this - alloc := &structs.Allocation{ - ID: structs.GenerateUUID(), - EvalID: s.eval.ID, - Name: missing.Name, - JobID: s.job.ID, - TaskGroup: missing.TaskGroup.Name, - Metrics: s.ctx.Metrics(), - } - // Store the available nodes by datacenter s.ctx.Metrics().NodesAvailable = s.nodesByDC // Set fields based on if we found an allocation option if option != nil { - // Generate service IDs tasks in this allocation - // COMPAT - This is no longer required and would be removed in v0.4 - alloc.PopulateServiceIDs(missing.TaskGroup) - - alloc.NodeID = option.Node.ID - alloc.TaskResources = option.TaskResources - alloc.DesiredStatus = structs.AllocDesiredStatusRun - alloc.ClientStatus = structs.AllocClientStatusPending + // Create an allocation for this + alloc := &structs.Allocation{ + ID: structs.GenerateUUID(), + EvalID: s.eval.ID, + Name: missing.Name, + JobID: s.job.ID, + TaskGroup: missing.TaskGroup.Name, + Metrics: s.ctx.Metrics(), + NodeID: option.Node.ID, + TaskResources: option.TaskResources, + DesiredStatus: structs.AllocDesiredStatusRun, + ClientStatus: structs.AllocClientStatusPending, + } + s.plan.AppendAlloc(alloc) } else { - alloc.DesiredStatus = structs.AllocDesiredStatusFailed - alloc.DesiredDescription = "failed to find a node for placement" - alloc.ClientStatus = structs.AllocClientStatusFailed - s.plan.AppendFailed(alloc) - failedTG[missing.TaskGroup] = alloc + // Lazy initialize the failed map + if s.failedTGAllocs == nil { + s.failedTGAllocs = make(map[string]*structs.AllocMetric) + } + + s.failedTGAllocs[missing.TaskGroup.Name] = s.ctx.Metrics() } } + return nil } diff -Nru nomad-0.3.2+dfsg/scheduler/system_sched_test.go nomad-0.4.0+dfsg/scheduler/system_sched_test.go --- nomad-0.3.2+dfsg/scheduler/system_sched_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/system_sched_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -1,6 +1,7 @@ package scheduler import ( + "reflect" "testing" "time" @@ -41,6 +42,71 @@ } plan := h.Plans[0] + // Ensure the plan doesn't have annotations. + if plan.Annotations != nil { + t.Fatalf("expected no annotations") + } + + // Ensure the plan allocated + var planned []*structs.Allocation + for _, allocList := range plan.NodeAllocation { + planned = append(planned, allocList...) + } + if len(planned) != 10 { + t.Fatalf("bad: %#v", plan) + } + + // Lookup the allocations by JobID + out, err := h.State.AllocsByJob(job.ID) + noErr(t, err) + + // Ensure all allocations placed + if len(out) != 10 { + t.Fatalf("bad: %#v", out) + } + + // Check the available nodes + if count, ok := out[0].Metrics.NodesAvailable["dc1"]; !ok || count != 10 { + t.Fatalf("bad: %#v", out[0].Metrics) + } + + h.AssertEvalStatus(t, structs.EvalStatusComplete) +} + +func TestSystemSched_JobRegister_Annotate(t *testing.T) { + h := NewHarness(t) + + // Create some nodes + for i := 0; i < 10; i++ { + node := mock.Node() + noErr(t, h.State.UpsertNode(h.NextIndex(), node)) + } + + // Create a job + job := mock.SystemJob() + noErr(t, h.State.UpsertJob(h.NextIndex(), job)) + + // Create a mock evaluation to deregister the job + eval := &structs.Evaluation{ + ID: structs.GenerateUUID(), + Priority: job.Priority, + TriggeredBy: structs.EvalTriggerJobRegister, + JobID: job.ID, + AnnotatePlan: true, + } + + // Process the evaluation + err := h.Process(NewSystemScheduler, eval) + if err != nil { + t.Fatalf("err: %v", err) + } + + // Ensure a single plan + if len(h.Plans) != 1 { + t.Fatalf("bad: %#v", h.Plans) + } + plan := h.Plans[0] + // Ensure the plan allocated var planned []*structs.Allocation for _, allocList := range plan.NodeAllocation { @@ -65,6 +131,26 @@ } h.AssertEvalStatus(t, structs.EvalStatusComplete) + + // Ensure the plan had annotations. + if plan.Annotations == nil { + t.Fatalf("expected annotations") + } + + desiredTGs := plan.Annotations.DesiredTGUpdates + if l := len(desiredTGs); l != 1 { + t.Fatalf("incorrect number of task groups; got %v; want %v", l, 1) + } + + desiredChanges, ok := desiredTGs["web"] + if !ok { + t.Fatalf("expected task group web to have desired changes") + } + + expected := &structs.DesiredUpdates{Place: 10} + if !reflect.DeepEqual(desiredChanges, expected) { + t.Fatalf("Unexpected desired updates; got %#v; want %#v", desiredChanges, expected) + } } func TestSystemSched_JobRegister_AddNode(t *testing.T) { diff -Nru nomad-0.3.2+dfsg/scheduler/testing.go nomad-0.4.0+dfsg/scheduler/testing.go --- nomad-0.3.2+dfsg/scheduler/testing.go 1970-01-01 00:00:00.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/testing.go 2016-06-28 21:26:34.000000000 +0000 @@ -0,0 +1,207 @@ +package scheduler + +import ( + "fmt" + "log" + "os" + "sync" + "testing" + + "github.com/hashicorp/nomad/nomad/state" + "github.com/hashicorp/nomad/nomad/structs" +) + +// RejectPlan is used to always reject the entire plan and force a state refresh +type RejectPlan struct { + Harness *Harness +} + +func (r *RejectPlan) SubmitPlan(*structs.Plan) (*structs.PlanResult, State, error) { + result := new(structs.PlanResult) + result.RefreshIndex = r.Harness.NextIndex() + return result, r.Harness.State, nil +} + +func (r *RejectPlan) UpdateEval(eval *structs.Evaluation) error { + return nil +} + +func (r *RejectPlan) CreateEval(*structs.Evaluation) error { + return nil +} + +func (r *RejectPlan) ReblockEval(*structs.Evaluation) error { + return nil +} + +// Harness is a lightweight testing harness for schedulers. It manages a state +// store copy and provides the planner interface. It can be extended for various +// testing uses or for invoking the scheduler without side effects. +type Harness struct { + State *state.StateStore + + Planner Planner + planLock sync.Mutex + + Plans []*structs.Plan + Evals []*structs.Evaluation + CreateEvals []*structs.Evaluation + ReblockEvals []*structs.Evaluation + + nextIndex uint64 + nextIndexLock sync.Mutex +} + +// NewHarness is used to make a new testing harness +func NewHarness(t *testing.T) *Harness { + state, err := state.NewStateStore(os.Stderr) + if err != nil { + t.Fatalf("err: %v", err) + } + + h := &Harness{ + State: state, + nextIndex: 1, + } + return h +} + +// SubmitPlan is used to handle plan submission +func (h *Harness) SubmitPlan(plan *structs.Plan) (*structs.PlanResult, State, error) { + // Ensure sequential plan application + h.planLock.Lock() + defer h.planLock.Unlock() + + // Store the plan + h.Plans = append(h.Plans, plan) + + // Check for custom planner + if h.Planner != nil { + return h.Planner.SubmitPlan(plan) + } + + // Get the index + index := h.NextIndex() + + // Prepare the result + result := new(structs.PlanResult) + result.NodeUpdate = plan.NodeUpdate + result.NodeAllocation = plan.NodeAllocation + result.AllocIndex = index + + // Flatten evicts and allocs + var allocs []*structs.Allocation + for _, updateList := range plan.NodeUpdate { + allocs = append(allocs, updateList...) + } + for _, allocList := range plan.NodeAllocation { + allocs = append(allocs, allocList...) + } + + // Attach the plan to all the allocations. It is pulled out in the + // payload to avoid the redundancy of encoding, but should be denormalized + // prior to being inserted into MemDB. + if j := plan.Job; j != nil { + for _, alloc := range allocs { + if alloc.Job == nil { + alloc.Job = j + } + } + } + + // Apply the full plan + err := h.State.UpsertAllocs(index, allocs) + return result, nil, err +} + +func (h *Harness) UpdateEval(eval *structs.Evaluation) error { + // Ensure sequential plan application + h.planLock.Lock() + defer h.planLock.Unlock() + + // Store the eval + h.Evals = append(h.Evals, eval) + + // Check for custom planner + if h.Planner != nil { + return h.Planner.UpdateEval(eval) + } + return nil +} + +func (h *Harness) CreateEval(eval *structs.Evaluation) error { + // Ensure sequential plan application + h.planLock.Lock() + defer h.planLock.Unlock() + + // Store the eval + h.CreateEvals = append(h.CreateEvals, eval) + + // Check for custom planner + if h.Planner != nil { + return h.Planner.CreateEval(eval) + } + return nil +} + +func (h *Harness) ReblockEval(eval *structs.Evaluation) error { + // Ensure sequential plan application + h.planLock.Lock() + defer h.planLock.Unlock() + + // Check that the evaluation was already blocked. + old, err := h.State.EvalByID(eval.ID) + if err != nil { + return err + } + + if old == nil { + return fmt.Errorf("evaluation does not exist to be reblocked") + } + if old.Status != structs.EvalStatusBlocked { + return fmt.Errorf("evaluation %q is not already in a blocked state", old.ID) + } + + h.ReblockEvals = append(h.ReblockEvals, eval) + return nil +} + +// NextIndex returns the next index +func (h *Harness) NextIndex() uint64 { + h.nextIndexLock.Lock() + defer h.nextIndexLock.Unlock() + idx := h.nextIndex + h.nextIndex += 1 + return idx +} + +// Snapshot is used to snapshot the current state +func (h *Harness) Snapshot() State { + snap, _ := h.State.Snapshot() + return snap +} + +// Scheduler is used to return a new scheduler from +// a snapshot of current state using the harness for planning. +func (h *Harness) Scheduler(factory Factory) Scheduler { + logger := log.New(os.Stderr, "", log.LstdFlags) + return factory(logger, h.Snapshot(), h) +} + +// Process is used to process an evaluation given a factory +// function to create the scheduler +func (h *Harness) Process(factory Factory, eval *structs.Evaluation) error { + sched := h.Scheduler(factory) + return sched.Process(eval) +} + +func (h *Harness) AssertEvalStatus(t *testing.T, state string) { + if len(h.Evals) != 1 { + t.Fatalf("bad: %#v", h.Evals) + } + update := h.Evals[0] + + if update.Status != state { + t.Fatalf("bad: %#v", update) + } +} diff -Nru nomad-0.3.2+dfsg/scheduler/util.go nomad-0.4.0+dfsg/scheduler/util.go --- nomad-0.3.2+dfsg/scheduler/util.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/util.go 2016-06-28 21:26:34.000000000 +0000 @@ -81,8 +81,17 @@ continue } - // If we are on a tainted node, we must migrate + // If we are on a tainted node, we must migrate if we are a service or + // if the batch allocation did not finish if taintedNodes[exist.NodeID] { + // If the job is batch and finished successfully, the fact that the + // node is tainted does not mean it should be migrated as the work + // was already successfully finished. However for service/system + // jobs, tasks should never complete. The check of batch type, + // defends against client bugs. + if exist.Job.Type == structs.JobTypeBatch && exist.RanSuccessfully() { + goto IGNORE + } result.migrate = append(result.migrate, allocTuple{ Name: name, TaskGroup: tg, @@ -102,6 +111,7 @@ } // Everything is up-to-date + IGNORE: result.ignore = append(result.ignore, allocTuple{ Name: name, TaskGroup: tg, @@ -293,12 +303,18 @@ if at.Driver != bt.Driver { return true } + if at.User != bt.User { + return true + } if !reflect.DeepEqual(at.Config, bt.Config) { return true } if !reflect.DeepEqual(at.Env, bt.Env) { return true } + if !reflect.DeepEqual(at.Meta, bt.Meta) { + return true + } if !reflect.DeepEqual(at.Artifacts, bt.Artifacts) { return true } @@ -310,32 +326,71 @@ for idx := range at.Resources.Networks { an := at.Resources.Networks[idx] bn := bt.Resources.Networks[idx] - if len(an.DynamicPorts) != len(bn.DynamicPorts) { + + if an.MBits != bn.MBits { + return true + } + + aPorts, bPorts := networkPortMap(an), networkPortMap(bn) + if !reflect.DeepEqual(aPorts, bPorts) { return true } } + + // Inspect the non-network resources + if ar, br := at.Resources, bt.Resources; ar.CPU != br.CPU { + return true + } else if ar.MemoryMB != br.MemoryMB { + return true + } else if ar.DiskMB != br.DiskMB { + return true + } else if ar.IOPS != br.IOPS { + return true + } } return false } +// networkPortMap takes a network resource and returns a map of port labels to +// values. The value for dynamic ports is disregarded even if it is set. This +// makes this function suitable for comparing two network resources for changes. +func networkPortMap(n *structs.NetworkResource) map[string]int { + m := make(map[string]int, len(n.DynamicPorts)+len(n.ReservedPorts)) + for _, p := range n.ReservedPorts { + m[p.Label] = p.Value + } + for _, p := range n.DynamicPorts { + m[p.Label] = -1 + } + return m +} + // setStatus is used to update the status of the evaluation -func setStatus(logger *log.Logger, planner Planner, eval, nextEval *structs.Evaluation, status, desc string) error { +func setStatus(logger *log.Logger, planner Planner, + eval, nextEval, spawnedBlocked *structs.Evaluation, + tgMetrics map[string]*structs.AllocMetric, status, desc string) error { + logger.Printf("[DEBUG] sched: %#v: setting status to %s", eval, status) newEval := eval.Copy() newEval.Status = status newEval.StatusDescription = desc + newEval.FailedTGAllocs = tgMetrics if nextEval != nil { newEval.NextEval = nextEval.ID } + if spawnedBlocked != nil { + newEval.BlockedEval = spawnedBlocked.ID + } return planner.UpdateEval(newEval) } -// inplaceUpdate attempts to update allocations in-place where possible. +// inplaceUpdate attempts to update allocations in-place where possible. It +// returns the allocs that couldn't be done inplace and then those that could. func inplaceUpdate(ctx Context, eval *structs.Evaluation, job *structs.Job, - stack Stack, updates []allocTuple) []allocTuple { + stack Stack, updates []allocTuple) (destructive, inplace []allocTuple) { n := len(updates) - inplace := 0 + inplaceCount := 0 for i := 0; i < n; i++ { // Get the update update := updates[i] @@ -400,19 +455,18 @@ newAlloc.Metrics = ctx.Metrics() newAlloc.DesiredStatus = structs.AllocDesiredStatusRun newAlloc.ClientStatus = structs.AllocClientStatusPending - newAlloc.PopulateServiceIDs(update.TaskGroup) ctx.Plan().AppendAlloc(newAlloc) // Remove this allocation from the slice - updates[i] = updates[n-1] + updates[i], updates[n-1] = updates[n-1], updates[i] i-- n-- - inplace++ + inplaceCount++ } if len(updates) > 0 { - ctx.Logger().Printf("[DEBUG] sched: %#v: %d in-place updates of %d", eval, inplace, len(updates)) + ctx.Logger().Printf("[DEBUG] sched: %#v: %d in-place updates of %d", eval, inplaceCount, len(updates)) } - return updates[:n] + return updates[:n], updates[n:] } // evictAndPlace is used to mark allocations for evicts and add them to the @@ -463,3 +517,79 @@ return c } + +// desiredUpdates takes the diffResult as well as the set of inplace and +// destructive updates and returns a map of task groups to their set of desired +// updates. +func desiredUpdates(diff *diffResult, inplaceUpdates, + destructiveUpdates []allocTuple) map[string]*structs.DesiredUpdates { + desiredTgs := make(map[string]*structs.DesiredUpdates) + + for _, tuple := range diff.place { + name := tuple.TaskGroup.Name + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.Place++ + } + + for _, tuple := range diff.stop { + name := tuple.Alloc.TaskGroup + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.Stop++ + } + + for _, tuple := range diff.ignore { + name := tuple.TaskGroup.Name + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.Ignore++ + } + + for _, tuple := range diff.migrate { + name := tuple.TaskGroup.Name + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.Migrate++ + } + + for _, tuple := range inplaceUpdates { + name := tuple.TaskGroup.Name + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.InPlaceUpdate++ + } + + for _, tuple := range destructiveUpdates { + name := tuple.TaskGroup.Name + des, ok := desiredTgs[name] + if !ok { + des = &structs.DesiredUpdates{} + desiredTgs[name] = des + } + + des.DestructiveUpdate++ + } + + return desiredTgs +} diff -Nru nomad-0.3.2+dfsg/scheduler/util_test.go nomad-0.4.0+dfsg/scheduler/util_test.go --- nomad-0.3.2+dfsg/scheduler/util_test.go 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scheduler/util_test.go 2016-06-28 21:26:34.000000000 +0000 @@ -12,6 +12,13 @@ "github.com/hashicorp/nomad/nomad/structs" ) +// noErr is used to assert there are no errors +func noErr(t *testing.T, err error) { + if err != nil { + t.Fatalf("err: %v", err) + } +} + func TestMaterializeTaskGroups(t *testing.T) { job := mock.Job() index := materializeTaskGroups(job) @@ -67,6 +74,7 @@ ID: structs.GenerateUUID(), NodeID: "zip", Name: "my-job.web[10]", + Job: oldJob, }, // Migrate the 3rd @@ -74,6 +82,7 @@ ID: structs.GenerateUUID(), NodeID: "dead", Name: "my-job.web[2]", + Job: oldJob, }, } @@ -148,6 +157,7 @@ ID: structs.GenerateUUID(), NodeID: "dead", Name: "my-job.web[0]", + Job: oldJob, }, } @@ -376,6 +386,52 @@ if !tasksUpdated(j1.TaskGroups[0], j7.TaskGroups[0]) { t.Fatalf("bad") } + + j8 := mock.Job() + j8.TaskGroups[0].Tasks[0].User = "foo" + if !tasksUpdated(j1.TaskGroups[0], j8.TaskGroups[0]) { + t.Fatalf("bad") + } + + j9 := mock.Job() + j9.TaskGroups[0].Tasks[0].Artifacts = []*structs.TaskArtifact{ + { + GetterSource: "http://foo.com/bar", + }, + } + if !tasksUpdated(j1.TaskGroups[0], j9.TaskGroups[0]) { + t.Fatalf("bad") + } + + j10 := mock.Job() + j10.TaskGroups[0].Tasks[0].Meta["baz"] = "boom" + if !tasksUpdated(j1.TaskGroups[0], j10.TaskGroups[0]) { + t.Fatalf("bad") + } + + j11 := mock.Job() + j11.TaskGroups[0].Tasks[0].Resources.CPU = 1337 + if !tasksUpdated(j1.TaskGroups[0], j11.TaskGroups[0]) { + t.Fatalf("bad") + } + + j12 := mock.Job() + j12.TaskGroups[0].Tasks[0].Resources.Networks[0].MBits = 100 + if !tasksUpdated(j1.TaskGroups[0], j12.TaskGroups[0]) { + t.Fatalf("bad") + } + + j13 := mock.Job() + j13.TaskGroups[0].Tasks[0].Resources.Networks[0].DynamicPorts[0].Label = "foobar" + if !tasksUpdated(j1.TaskGroups[0], j13.TaskGroups[0]) { + t.Fatalf("bad") + } + + j14 := mock.Job() + j14.TaskGroups[0].Tasks[0].Resources.Networks[0].ReservedPorts = []structs.Port{{Label: "foo", Value: 1312}} + if !tasksUpdated(j1.TaskGroups[0], j14.TaskGroups[0]) { + t.Fatalf("bad") + } } func TestEvictAndPlace_LimitLessThanAllocs(t *testing.T) { @@ -432,7 +488,7 @@ eval := mock.Eval() status := "a" desc := "b" - if err := setStatus(logger, h, eval, nil, status, desc); err != nil { + if err := setStatus(logger, h, eval, nil, nil, nil, status, desc); err != nil { t.Fatalf("setStatus() failed: %v", err) } @@ -445,9 +501,10 @@ t.Fatalf("setStatus() submited invalid eval: %v", newEval) } + // Test next evals h = NewHarness(t) next := mock.Eval() - if err := setStatus(logger, h, eval, next, status, desc); err != nil { + if err := setStatus(logger, h, eval, next, nil, nil, status, desc); err != nil { t.Fatalf("setStatus() failed: %v", err) } @@ -459,6 +516,38 @@ if newEval.NextEval != next.ID { t.Fatalf("setStatus() didn't set nextEval correctly: %v", newEval) } + + // Test blocked evals + h = NewHarness(t) + blocked := mock.Eval() + if err := setStatus(logger, h, eval, nil, blocked, nil, status, desc); err != nil { + t.Fatalf("setStatus() failed: %v", err) + } + + if len(h.Evals) != 1 { + t.Fatalf("setStatus() didn't update plan: %v", h.Evals) + } + + newEval = h.Evals[0] + if newEval.BlockedEval != blocked.ID { + t.Fatalf("setStatus() didn't set BlockedEval correctly: %v", newEval) + } + + // Test metrics + h = NewHarness(t) + metrics := map[string]*structs.AllocMetric{"foo": nil} + if err := setStatus(logger, h, eval, nil, nil, metrics, status, desc); err != nil { + t.Fatalf("setStatus() failed: %v", err) + } + + if len(h.Evals) != 1 { + t.Fatalf("setStatus() didn't update plan: %v", h.Evals) + } + + newEval = h.Evals[0] + if !reflect.DeepEqual(newEval.FailedTGAllocs, metrics) { + t.Fatalf("setStatus() didn't set failed task group metrics correctly: %v", newEval) + } } func TestInplaceUpdate_ChangedTaskGroup(t *testing.T) { @@ -496,9 +585,9 @@ stack := NewGenericStack(false, ctx) // Do the inplace update. - unplaced := inplaceUpdate(ctx, eval, job, stack, updates) + unplaced, inplace := inplaceUpdate(ctx, eval, job, stack, updates) - if len(unplaced) != 1 { + if len(unplaced) != 1 || len(inplace) != 0 { t.Fatal("inplaceUpdate incorrectly did an inplace update") } @@ -541,9 +630,9 @@ stack := NewGenericStack(false, ctx) // Do the inplace update. - unplaced := inplaceUpdate(ctx, eval, job, stack, updates) + unplaced, inplace := inplaceUpdate(ctx, eval, job, stack, updates) - if len(unplaced) != 1 { + if len(unplaced) != 1 || len(inplace) != 0 { t.Fatal("inplaceUpdate incorrectly did an inplace update") } @@ -575,16 +664,8 @@ DesiredStatus: structs.AllocDesiredStatusRun, } alloc.TaskResources = map[string]*structs.Resources{"web": alloc.Resources} - alloc.PopulateServiceIDs(job.TaskGroups[0]) noErr(t, state.UpsertAllocs(1001, []*structs.Allocation{alloc})) - webFeSrvID := alloc.Services["web-frontend"] - adminSrvID := alloc.Services["web-admin"] - - if webFeSrvID == "" || adminSrvID == "" { - t.Fatal("Service ID needs to be generated for service") - } - // Create a new task group that updates the resources. tg := &structs.TaskGroup{} *tg = *job.TaskGroups[0] @@ -612,9 +693,9 @@ stack.SetJob(job) // Do the inplace update. - unplaced := inplaceUpdate(ctx, eval, job, stack, updates) + unplaced, inplace := inplaceUpdate(ctx, eval, job, stack, updates) - if len(unplaced) != 0 { + if len(unplaced) != 0 || len(inplace) != 1 { t.Fatal("inplaceUpdate did not do an inplace update") } @@ -622,21 +703,40 @@ t.Fatal("inplaceUpdate did not do an inplace update") } + if inplace[0].Alloc.ID != alloc.ID { + t.Fatalf("inplaceUpdate returned the wrong, inplace updated alloc: %#v", inplace) + } + // Get the alloc we inserted. - a := ctx.plan.NodeAllocation[alloc.NodeID][0] - if len(a.Services) != 3 { - t.Fatalf("Expected number of services: %v, Actual: %v", 3, len(a.Services)) + a := inplace[0].Alloc // TODO(sean@): Verify this is correct vs: ctx.plan.NodeAllocation[alloc.NodeID][0] + if a.Job == nil { + t.Fatalf("bad") + } + + if len(a.Job.TaskGroups) != 1 { + t.Fatalf("bad") } - // Test that the service id for the old service is still the same - if a.Services["web-frontend"] != webFeSrvID { - t.Fatalf("Expected service ID: %v, Actual: %v", webFeSrvID, a.Services["web-frontend"]) + if len(a.Job.TaskGroups[0].Tasks) != 1 { + t.Fatalf("bad") + } + + if len(a.Job.TaskGroups[0].Tasks[0].Services) != 3 { + t.Fatalf("Expected number of services: %v, Actual: %v", 3, len(a.Job.TaskGroups[0].Tasks[0].Services)) } - // Test that the map doesn't contain the service ID of the admin Service - // anymore - if _, ok := a.Services["web-admin"]; ok { - t.Fatal("Service shouldn't be present") + serviceNames := make(map[string]struct{}, 3) + for _, consulService := range a.Job.TaskGroups[0].Tasks[0].Services { + serviceNames[consulService.Name] = struct{}{} + } + if len(serviceNames) != 3 { + t.Fatalf("bad") + } + + for _, name := range []string{"dummy-service", "dummy-service2", "web-frontend"} { + if _, found := serviceNames[name]; !found { + t.Errorf("Expected consul service name missing: %v", name) + } } } @@ -733,3 +833,61 @@ t.Fatal("bad") } } + +func TestDesiredUpdates(t *testing.T) { + tg1 := &structs.TaskGroup{Name: "foo"} + tg2 := &structs.TaskGroup{Name: "bar"} + a2 := &structs.Allocation{TaskGroup: "bar"} + + place := []allocTuple{ + allocTuple{TaskGroup: tg1}, + allocTuple{TaskGroup: tg1}, + allocTuple{TaskGroup: tg1}, + allocTuple{TaskGroup: tg2}, + } + stop := []allocTuple{ + allocTuple{TaskGroup: tg2, Alloc: a2}, + allocTuple{TaskGroup: tg2, Alloc: a2}, + } + ignore := []allocTuple{ + allocTuple{TaskGroup: tg1}, + } + migrate := []allocTuple{ + allocTuple{TaskGroup: tg2}, + } + inplace := []allocTuple{ + allocTuple{TaskGroup: tg1}, + allocTuple{TaskGroup: tg1}, + } + destructive := []allocTuple{ + allocTuple{TaskGroup: tg1}, + allocTuple{TaskGroup: tg2}, + allocTuple{TaskGroup: tg2}, + } + diff := &diffResult{ + place: place, + stop: stop, + ignore: ignore, + migrate: migrate, + } + + expected := map[string]*structs.DesiredUpdates{ + "foo": { + Place: 3, + Ignore: 1, + InPlaceUpdate: 2, + DestructiveUpdate: 1, + }, + "bar": { + Place: 1, + Stop: 2, + Migrate: 1, + DestructiveUpdate: 2, + }, + } + + desired := desiredUpdates(diff, inplace, destructive) + if !reflect.DeepEqual(desired, expected) { + t.Fatalf("desiredUpdates() returned %#v; want %#v", desired, expected) + } +} diff -Nru nomad-0.3.2+dfsg/scripts/build.sh nomad-0.4.0+dfsg/scripts/build.sh --- nomad-0.3.2+dfsg/scripts/build.sh 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scripts/build.sh 2016-06-28 21:26:34.000000000 +0000 @@ -17,7 +17,7 @@ # Determine the arch/os combos we're building for XC_ARCH=${XC_ARCH:-"386 amd64 arm"} -XC_OS=${XC_OS:-linux darwin windows freebsd openbsd} +XC_OS=${XC_OS:-linux} # Delete the old dir echo "==> Removing old directory..." @@ -35,8 +35,10 @@ echo "==> Building..." gox \ -os="${XC_OS}" \ - -os="!freebsd" \ + -os="!dragonfly" \ + -os="!netbsd" \ -os="!openbsd" \ + -os="!solaris" \ -arch="${XC_ARCH}" \ -osarch="!linux/arm !darwin/386" \ -ldflags "-X main.GitCommit='${GIT_COMMIT}${GIT_DIRTY}'" \ diff -Nru nomad-0.3.2+dfsg/scripts/dist.sh nomad-0.4.0+dfsg/scripts/dist.sh --- nomad-0.3.2+dfsg/scripts/dist.sh 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scripts/dist.sh 2016-06-28 21:26:34.000000000 +0000 @@ -4,7 +4,7 @@ # Get the version from the command line VERSION=$1 if [ -z $VERSION ]; then - echo "Please specify a version." + echo "Please specify a version. (format: 0.4.0-rc1)" exit 1 fi diff -Nru nomad-0.3.2+dfsg/scripts/install_rkt.sh nomad-0.4.0+dfsg/scripts/install_rkt.sh --- nomad-0.3.2+dfsg/scripts/install_rkt.sh 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scripts/install_rkt.sh 2016-06-28 21:26:34.000000000 +0000 @@ -2,14 +2,28 @@ set -ex -RKT_VERSION="v1.2.0" +RKT_VERSION="v1.5.1" +RKT_SHA512="8163ca59fc8c44c9c2997431d16274d81d2e82ff2956c860607f4c111de744b78cdce716f8afbacf7173e0cdce25deac73ec95a30a8849bbf58d35faeb84e398" DEST_DIR="/usr/local/bin" sudo mkdir -p /etc/rkt/net.d echo '{"name": "default", "type": "ptp", "ipMasq": false, "ipam": { "type": "host-local", "subnet": "172.16.28.0/24", "routes": [ { "dst": "0.0.0.0/0" } ] } }' | sudo tee -a /etc/rkt/net.d/99-network.conf -wget https://github.com/coreos/rkt/releases/download/$RKT_VERSION/rkt-$RKT_VERSION.tar.gz -tar xzvf rkt-$RKT_VERSION.tar.gz +if [ ! -d "rkt-${RKT_VERSION}" ]; then + printf "rkt-%s/ doesn't exist\n" "${RKT_VERSION}" + if [ ! -f "rkt-${RKT_VERSION}.tar.gz" ]; then + printf "Fetching rkt-%s.tar.gz\n" "${RKT_VERSION}" + wget https://github.com/coreos/rkt/releases/download/$RKT_VERSION/rkt-$RKT_VERSION.tar.gz + expected_version=$(printf 'SHA512(rkt-%s.tar.gz)= %s' "${RKT_VERSION}" "${RKT_SHA512}") + actual_version=$(openssl sha512 rkt-${RKT_VERSION}.tar.gz) + if [ "${expected_version}" != "${actual_version}" ]; then + printf "SHA512 of rkt-%s failed\n" "${RKT_VERSION}" + exit 1 + fi + tar xzvf rkt-$RKT_VERSION.tar.gz + fi +fi + sudo cp rkt-$RKT_VERSION/rkt $DEST_DIR sudo cp rkt-$RKT_VERSION/*.aci $DEST_DIR diff -Nru nomad-0.3.2+dfsg/scripts/test.sh nomad-0.4.0+dfsg/scripts/test.sh --- nomad-0.3.2+dfsg/scripts/test.sh 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/scripts/test.sh 2016-06-28 21:26:34.000000000 +0000 @@ -10,4 +10,4 @@ # Run the tests echo "--> Running tests" -go list ./... | grep -v '/vendor/' | sudo -E PATH=$TEMPDIR:$PATH xargs -n1 go test -cover -timeout=360s +go list ./... | grep -v '/vendor/' | sudo -E PATH=$TEMPDIR:$PATH xargs -n1 go test ${GOTEST_FLAGS:--cover -timeout=900s} diff -Nru nomad-0.3.2+dfsg/.travis.yml nomad-0.4.0+dfsg/.travis.yml --- nomad-0.3.2+dfsg/.travis.yml 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/.travis.yml 2016-06-28 21:26:34.000000000 +0000 @@ -7,7 +7,7 @@ language: go go: - - 1.6 + - 1.6.2 matrix: allow_failures: diff -Nru nomad-0.3.2+dfsg/Vagrantfile nomad-0.4.0+dfsg/Vagrantfile --- nomad-0.3.2+dfsg/Vagrantfile 2016-04-22 23:30:39.000000000 +0000 +++ nomad-0.4.0+dfsg/Vagrantfile 2016-06-28 21:26:34.000000000 +0000 @@ -4,7 +4,11 @@ # Vagrantfile API/syntax version. Don't touch unless you know what you're doing! VAGRANTFILE_API_VERSION = "2" +DEFAULT_CPU_COUNT = 2 $script = <