Public bug reported:
In https://review.openstack.org/#/c/381890 we got the following failure:
| Captured traceback:
| ~~~~~~~~~~~~~~~~~~~
| Traceback (most recent call last):
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/mock/mock.py",
line 1305, in patched
| return func(*args, **keywargs)
| File "glance/tests/unit/v2/test_tasks_resource.py", line 367, in
test_create_with_live_time
| self.assertEqual(CONF.task.task_time_to_live, task_live_time_hour)
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py",
line 411, in assertEqual
| self.assertThat(observed, matcher, message)
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py",
line 498, in assertThat
| raise mismatch_error
| testtools.matchers._impl.MismatchError: 48 != 47
This can happen if the exires_at and updated_at are not 2 days apart (ignoring
seconds and microsecond) (from [2])
# ignore second and microsecond to avoid flaky runs
task_live_time = (success_task.expires_at.replace(second=0,
microsecond=0) -
success_task.updated_at.replace(second=0,
microsecond=0))
The following interactive example shows what I mean:
balder:glance tony8129$ python
Python 2.7.12 (default, Jun 29 2016, 12:46:54)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime
>>> class FakeTask(object):
... pass
>>> success_task = FakeTask()
>>> success_task.expires_at = datetime.datetime(2016, 10, 3, 00, 00, 00)
>>> success_task.updated_at = datetime.datetime(2016, 10, 1, 00, 00, 00)
>>> task_live_time = (success_task.expires_at.replace(second=0,
>>> microsecond=0) -
... success_task.updated_at.replace(second=0,
... microsecond=0))
... task_live_time
>>> datetime.timedelta(2)
>>> success_task.updated_at = datetime.datetime(2016, 10, 1, 00, 01, 00)
>>> task_live_time = (success_task.expires_at.replace(second=0,
>>> microsecond=0) -
... success_task.updated_at.replace(second=0,
... microsecond=0))
... task_live_time
>>> datetime.timedelta(1, 86340)
task_live_time_hour = (task_live_time.days * 24 +
>>> task_live_time.seconds / 3600)
>>> task_live_time_hour
>>> 47
I couldn't find the specific code but I assume something like:
db.expires_at = now() + CONF.task.task_time_to_live # mm:59
db_updated_at = now() # 1+mm:00
Happens causing this false positive.
[1]
http://logs.openstack.org/90/381890/3/gate/gate-cross-glance-python27-db-ubuntu-xenial/1dff2a8/console.html#_2016-10-06_02_26_57_318997
[2]
https://github.com/openstack/glance/blob/master/glance/tests/unit/v2/test_tasks_resource.py#L361-L364
** Affects: glance
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1630851
Title:
test_create_with_live_time can fail if run at "just the wrong time"
Status in Glance:
New
Bug description:
In https://review.openstack.org/#/c/381890 we got the following failure:
| Captured traceback:
| ~~~~~~~~~~~~~~~~~~~
| Traceback (most recent call last):
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/mock/mock.py",
line 1305, in patched
| return func(*args, **keywargs)
| File "glance/tests/unit/v2/test_tasks_resource.py", line 367, in
test_create_with_live_time
| self.assertEqual(CONF.task.task_time_to_live, task_live_time_hour)
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py",
line 411, in assertEqual
| self.assertThat(observed, matcher, message)
| File
"/home/jenkins/workspace/gate-cross-glance-python27-db-ubuntu-xenial/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py",
line 498, in assertThat
| raise mismatch_error
| testtools.matchers._impl.MismatchError: 48 != 47
This can happen if the exires_at and updated_at are not 2 days apart
(ignoring seconds and microsecond) (from [2])
# ignore second and microsecond to avoid flaky runs
task_live_time = (success_task.expires_at.replace(second=0,
microsecond=0) -
success_task.updated_at.replace(second=0,
microsecond=0))
The following interactive example shows what I mean:
balder:glance tony8129$ python
Python 2.7.12 (default, Jun 29 2016, 12:46:54)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime
>>> class FakeTask(object):
... pass
>>> success_task = FakeTask()
>>> success_task.expires_at = datetime.datetime(2016, 10, 3, 00, 00, 00)
>>> success_task.updated_at = datetime.datetime(2016, 10, 1, 00, 00, 00)
>>> task_live_time = (success_task.expires_at.replace(second=0,
>>> microsecond=0) -
... success_task.updated_at.replace(second=0,
... microsecond=0))
... task_live_time
>>> datetime.timedelta(2)
>>> success_task.updated_at = datetime.datetime(2016, 10, 1, 00, 01, 00)
>>> task_live_time = (success_task.expires_at.replace(second=0,
>>> microsecond=0) -
... success_task.updated_at.replace(second=0,
... microsecond=0))
... task_live_time
>>> datetime.timedelta(1, 86340)
task_live_time_hour = (task_live_time.days * 24 +
>>> task_live_time.seconds / 3600)
>>> task_live_time_hour
>>> 47
I couldn't find the specific code but I assume something like:
db.expires_at = now() + CONF.task.task_time_to_live # mm:59
db_updated_at = now() # 1+mm:00
Happens causing this false positive.
[1]
http://logs.openstack.org/90/381890/3/gate/gate-cross-glance-python27-db-ubuntu-xenial/1dff2a8/console.html#_2016-10-06_02_26_57_318997
[2]
https://github.com/openstack/glance/blob/master/glance/tests/unit/v2/test_tasks_resource.py#L361-L364
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