Comment 8 for bug 1049017

The empty header form of deletion has been there since August of 2010 (version 1.1.0).

The -remove- form of deletion has been there since March of this year (version 1.4.8).

The documentation for such is at http://docs.openstack.org/api/openstack-object-storage/1.0/content/delete-container-metadata.html

Here's a quick test I did with curl:

# Create container
$ curl -XPUT http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1
201 Created

# HEAD container to show no metadata
$ curl -I http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1
HTTP/1.1 204 No Content
X-Container-Object-Count: 0
X-Timestamp: 1347421947.14939
X-Container-Bytes-Used: 0
Accept-Ranges: bytes
Content-Length: 0
Date: Wed, 12 Sep 2012 03:53:18 GMT

# POST to make metadata
$ curl -XPOST -Hx-container-meta-just-testing:some-value http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1

# HEAD container to show the new metadata
$ curl -I http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1
HTTP/1.1 204 No Content
X-Container-Object-Count: 0
X-Timestamp: 1347421947.14944
X-Container-Bytes-Used: 0
X-Container-Meta-Just-Testing: some-value
Accept-Ranges: bytes
Content-Length: 0
Date: Wed, 12 Sep 2012 03:54:43 GMT

# POST to remove the metadata item
$ curl -XPOST -Hx-remove-container-meta-just-testing:junk http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1

# HEAD to show the metadata item is gone
$ curl -I http://127.0.0.1:8080/v1/AUTH_test/test_container -Hx-auth-token:AUTH_tk71b0ad0c9b81435884091ae1ffea0ec1
HTTP/1.1 204 No Content
X-Container-Object-Count: 0
X-Timestamp: 1347421947.14944
X-Container-Bytes-Used: 0
Accept-Ranges: bytes
Content-Length: 0
Date: Wed, 12 Sep 2012 03:55:29 GMT