bbfdeb84f0
This changeset provides pause and resume actions to the ceph charm. The pause action issues a 'ceph osd out <local_id>' for each of the ceph osd ids that are on the unit. The action does not stop the ceph osd processes. Note that if the pause-health action is NOT used on the ceph-mon charm then the cluster will start trying to rebalance the PGs accross the remaining OSDs. If the cluster might reach its 'full ratio' then this will be a breaking action. The charm does NOT check for this eventuality. The resume action issues a 'ceph osd in <local_id>' for each of the local ceph osd process on the unit. The charm 'remembers' that a pause action was issued, and if successful, it shows a 'maintenance' workload status as a reminder. Change-Id: I9f53c9c6c4bb737670ffcd542acec0b320cc7f6a
80 lines
2.3 KiB
Python
80 lines
2.3 KiB
Python
import mock
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import sys
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from test_utils import CharmTestCase
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sys.path.append('hooks')
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import pause_resume as actions
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class PauseTestCase(CharmTestCase):
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def setUp(self):
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super(PauseTestCase, self).setUp(
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actions, ["check_call",
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"get_local_osd_ids",
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"set_unit_paused",
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"assess_status"])
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def test_pauses_services(self):
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self.get_local_osd_ids.return_value = [5]
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actions.pause([])
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cmd = ['ceph', 'osd', 'out', '5']
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self.check_call.assert_called_once_with(cmd)
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self.set_unit_paused.assert_called_once_with()
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self.assess_status.assert_called_once_with()
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class ResumeTestCase(CharmTestCase):
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def setUp(self):
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super(ResumeTestCase, self).setUp(
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actions, ["check_call",
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"get_local_osd_ids",
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"clear_unit_paused",
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"assess_status"])
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def test_pauses_services(self):
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self.get_local_osd_ids.return_value = [5]
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actions.resume([])
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cmd = ['ceph', 'osd', 'in', '5']
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self.check_call.assert_called_once_with(cmd)
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self.clear_unit_paused.assert_called_once_with()
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self.assess_status.assert_called_once_with()
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class MainTestCase(CharmTestCase):
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def setUp(self):
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super(MainTestCase, self).setUp(actions, ["action_fail"])
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def test_invokes_action(self):
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dummy_calls = []
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def dummy_action(args):
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dummy_calls.append(True)
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with mock.patch.dict(actions.ACTIONS, {"foo": dummy_action}):
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actions.main(["foo"])
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self.assertEqual(dummy_calls, [True])
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def test_unknown_action(self):
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"""Unknown actions aren't a traceback."""
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exit_string = actions.main(["foo"])
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self.assertEqual("Action foo undefined", exit_string)
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def test_failing_action(self):
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"""Actions which traceback trigger action_fail() calls."""
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dummy_calls = []
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self.action_fail.side_effect = dummy_calls.append
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def dummy_action(args):
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raise ValueError("uh oh")
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with mock.patch.dict(actions.ACTIONS, {"foo": dummy_action}):
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actions.main(["foo"])
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self.assertEqual(dummy_calls, ["Action foo failed: uh oh"])
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