184 lines
8.7 KiB
Python
184 lines
8.7 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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import oslo_messaging as messaging
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from magnum.common import exception
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from magnum.common import short_id
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from magnum.conductor import bay_lock
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from magnum.tests import base
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from magnum.tests.unit.objects import utils as obj_utils
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from mock import patch
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class BayLockTest(base.TestCase):
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def setUp(self):
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super(BayLockTest, self).setUp()
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self.conductor_id = short_id.generate_id()
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self.bay = obj_utils.get_test_bay(self.context)
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class TestThreadLockException(Exception):
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pass
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@patch('magnum.objects.BayLock.create', return_value=None)
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def test_successful_acquire_new_lock(self, mock_object_create):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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baylock.acquire()
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mock_object_create.assert_called_once_with(self.bay.uuid,
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self.conductor_id)
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@patch('magnum.objects.BayLock.create')
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def test_failed_acquire_current_conductor_lock(self, mock_object_create):
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mock_object_create.return_value = self.conductor_id
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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self.assertRaises(exception.OperationInProgress, baylock.acquire)
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mock_object_create.assert_called_once_with(self.bay.uuid,
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self.conductor_id)
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@patch('magnum.objects.BayLock.steal', return_value=None)
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@patch('magnum.objects.BayLock.create', return_value='fake-conductor-id')
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def test_successful_acquire_dead_conductor_lock(self, mock_object_create,
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mock_object_steal):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with mock.patch.object(baylock, 'conductor_alive',
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return_value=False):
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baylock.acquire()
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mock_object_create.assert_called_once_with(self.bay.uuid,
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self.conductor_id)
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mock_object_steal.assert_called_once_with(self.bay.uuid,
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'fake-conductor-id', self.conductor_id)
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@patch('magnum.objects.BayLock.create', return_value='fake-conductor-id')
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def test_failed_acquire_alive_conductor_lock(self, mock_object_create):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with mock.patch.object(baylock, 'conductor_alive',
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return_value=True):
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self.assertRaises(exception.OperationInProgress, baylock.acquire)
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mock_object_create.assert_called_once_with(self.bay.uuid,
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self.conductor_id)
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@patch('magnum.objects.BayLock.steal', return_value='fake-conductor-id2')
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@patch('magnum.objects.BayLock.create', return_value='fake-conductor-id')
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def test_failed_acquire_dead_conductor_lock(self, mock_object_create,
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mock_object_steal):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with mock.patch.object(baylock, 'conductor_alive',
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return_value=False):
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self.assertRaises(exception.OperationInProgress, baylock.acquire)
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mock_object_create.assert_called_once_with(self.bay.uuid,
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self.conductor_id)
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mock_object_steal.assert_called_once_with(self.bay.uuid,
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'fake-conductor-id', self.conductor_id)
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@patch('magnum.objects.BayLock.steal', side_effect=[True, None])
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@patch('magnum.objects.BayLock.create', return_value='fake-conductor-id')
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def test_successful_acquire_with_retry(self, mock_object_create,
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mock_object_steal):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with mock.patch.object(baylock, 'conductor_alive',
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return_value=False):
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baylock.acquire()
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mock_object_create.assert_has_calls(
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[mock.call(self.bay.uuid, self.conductor_id)] * 2)
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mock_object_steal.assert_has_calls(
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[mock.call(self.bay.uuid, 'fake-conductor-id',
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self.conductor_id)] * 2)
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@patch('magnum.objects.BayLock.steal', return_value=True)
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@patch('magnum.objects.BayLock.create', return_value='fake-conductor-id')
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def test_failed_acquire_one_retry_only(self, mock_object_create,
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mock_object_steal):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with mock.patch.object(baylock, 'conductor_alive',
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return_value=False):
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self.assertRaises(exception.OperationInProgress, baylock.acquire)
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mock_object_create.assert_has_calls(
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[mock.call(self.bay.uuid, self.conductor_id)] * 2)
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mock_object_steal.assert_has_calls(
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[mock.call(self.bay.uuid, 'fake-conductor-id',
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self.conductor_id)] * 2)
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@patch('magnum.objects.BayLock.release', return_value=None)
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@patch('magnum.objects.BayLock.create', return_value=None)
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def test_thread_lock_acquire_success_with_exception(self,
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mock_object_create,
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mock_object_release):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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def check_thread_lock():
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with baylock.thread_lock(self.bay.uuid):
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self.assertEqual(1, mock_object_create.call_count)
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raise self.TestThreadLockException
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self.assertRaises(self.TestThreadLockException, check_thread_lock)
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self.assertEqual(1, mock_object_release.call_count)
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@patch('magnum.objects.BayLock.release', return_value=None)
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@patch('magnum.objects.BayLock.create')
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def test_thread_lock_acquire_fail_with_exception(self, mock_object_create,
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mock_object_release):
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mock_object_create.return_value = self.conductor_id
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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def check_thread_lock():
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with baylock.thread_lock(self.bay.uuid):
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self.assertEqual(1, mock_object_create.call_count)
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raise exception.OperationInProgress
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self.assertRaises(exception.OperationInProgress, check_thread_lock)
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assert not mock_object_release.called
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@patch('magnum.objects.BayLock.release', return_value=None)
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@patch('magnum.objects.BayLock.create', return_value=None)
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def test_thread_lock_acquire_success_no_exception(self, mock_object_create,
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mock_object_release):
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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with baylock.thread_lock(self.bay.uuid):
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self.assertEqual(1, mock_object_create.call_count)
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assert not mock_object_release.called
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@patch('magnum.conductor.api.ListenerAPI.__new__')
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def test_conductor_alive_ok(self, mock_listener_api_new):
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mock_listener_api = mock.MagicMock()
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mock_listener_api.ping_conductor.return_value = True
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mock_listener_api_new.return_value = mock_listener_api
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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ret = baylock.conductor_alive(self.context, self.conductor_id)
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self.assertIs(True, ret)
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self.assertEqual(1, mock_listener_api_new.call_count)
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@patch('magnum.conductor.api.ListenerAPI.__new__')
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def test_conductor_alive_timeout(self, mock_listener_api_new):
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mock_listener_api = mock.MagicMock()
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mock_listener_api.ping_conductor.side_effect = (
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messaging.MessagingTimeout('too slow'))
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mock_listener_api_new.return_value = mock_listener_api
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baylock = bay_lock.BayLock(self.context, self.bay, self.conductor_id)
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ret = baylock.conductor_alive(self.context, self.conductor_id)
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self.assertIs(False, ret)
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self.assertEqual(1, mock_listener_api_new.call_count)
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