Ubuntu One Client

'NoneType' object has no attribute 'cancel' on darwin and windows

Bug #1017922 reported by Manuel de la Peña
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu One Client
Status tracked in Trunk
Stable-4-0
Fix Released
Undecided
Unassigned
Ubuntu One Client 3.99.2
Trunk
Fix Released
Medium
Manuel de la Peña

Bug Description

While running u1-client on darwin I have seen several times the following:

Unhandled error in Deferred:
2012-06-26 14:36:08,425 - twisted - ERROR - Unhandled Error
Traceback (most recent call last):
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 696, in _queue_done
    self.progress_bar.completed()
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 582, in completed
    self.inhibitor_defer.addCallback(inhibitor_callback)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 301, in addCallback
    callbackKeywords=kw)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 290, in addCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 551, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 580, in inhibitor_callback
    return inhibitor.cancel()
exceptions.AttributeError: 'NoneType' object has no attribute 'cancel'

Unhandled Error
Traceback (most recent call last):
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 696, in _queue_done
    self.progress_bar.completed()
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 582, in completed
    self.inhibitor_defer.addCallback(inhibitor_callback)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 301, in addCallback
    callbackKeywords=kw)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 290, in addCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-macosx-10.4-x86_64.egg/twisted/internet/defer.py", line 551, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/Users/mandel/Projects/Canonical/ubuntuone-client/fsevents-daemon/ubuntuone/status/aggregator.py", line 580, in inhibitor_callback
    return inhibitor.cancel()
exceptions.AttributeError: 'NoneType' object has no attribute 'cancel'

Looks like a bad implementation of a stub somewhere.

Tags: u1-darwin

Related branches

lp:~mandel/ubuntuone-client/darwin-inhibitor
Diego Sarmentero (community): Approve
Roberto Alsina (community): Approve
Diff: 90 lines (+50/-3)
4 files modified
tests/platform/session/test_common.py (+46/-0)
tests/platform/session/test_linux.py (+2/-1)
ubuntuone/platform/session/darwin.py (+1/-1)
ubuntuone/platform/session/windows.py (+1/-1)
Revision history for this message
Roberto Alsina (ralsina) wrote :

The darwin inhibitor does have cancel() so it looks like something else. Probably some other stub is not creating the inhibitor object on darwin.

Manuel de la Peña (mandel)
summary: - 'NoneType' object has no attribute 'cancel' on darwin
+ 'NoneType' object has no attribute 'cancel' on darwin and windows
Ubuntu One Auto Pilot (otto-pilot)
Changed in ubuntuone-client:
status: Triaged → Fix Committed
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