152 lines
6.1 KiB
Python
152 lines
6.1 KiB
Python
# Copyright 2015 Hewlett-Packard Development Company, L.P.
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#
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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 threading
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from unittest import mock
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from oslo_config import cfg
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from oslo_config import fixture as oslo_fixture
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from oslo_db import exception as db_exc
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from oslo_utils import uuidutils
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from octavia.controller.healthmanager import health_manager as healthmanager
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import octavia.tests.unit.base as base
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CONF = cfg.CONF
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AMPHORA_ID = uuidutils.generate_uuid()
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class TestException(Exception):
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def __init__(self, value):
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self.value = value
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def __str__(self):
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return repr(self.value)
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class TestHealthManager(base.TestCase):
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def setUp(self):
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super(TestHealthManager, self).setUp()
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@mock.patch('octavia.db.api.wait_for_connection')
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@mock.patch('octavia.controller.worker.v1.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.controller.worker.v2.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.db.repositories.AmphoraHealthRepository.'
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'get_stale_amphora')
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@mock.patch('octavia.db.api.get_session')
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def test_health_check_stale_amphora(self, session_mock, get_stale_amp_mock,
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failover_mockv2, failover_mock,
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db_wait_mock):
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conf = oslo_fixture.Config(cfg.CONF)
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conf.config(group="health_manager", heartbeat_timeout=5)
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amphora_health = mock.MagicMock()
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amphora_health.amphora_id = AMPHORA_ID
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get_stale_amp_mock.side_effect = [amphora_health, None]
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exit_event = threading.Event()
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hm = healthmanager.HealthManager(exit_event)
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hm.health_check()
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# Test DBDeadlock and RetryRequest exceptions
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session_mock.reset_mock()
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get_stale_amp_mock.reset_mock()
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mock_session = mock.MagicMock()
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session_mock.return_value = mock_session
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get_stale_amp_mock.side_effect = [
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db_exc.DBDeadlock,
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db_exc.RetryRequest(Exception('retry_test')),
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db_exc.DBConnectionError,
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TestException('test')]
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# Test that a DBDeadlock does not raise an exception
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self.assertIsNone(hm.health_check())
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# Test that a RetryRequest does not raise an exception
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self.assertIsNone(hm.health_check())
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# Test that a DBConnectionError does not raise an exception
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self.assertIsNone(hm.health_check())
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# ... and that it waits for DB reconnection
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db_wait_mock.assert_called_once()
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# Other exceptions should raise
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self.assertRaises(TestException, hm.health_check)
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self.assertEqual(4, mock_session.rollback.call_count)
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@mock.patch('octavia.controller.worker.v1.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.controller.worker.v2.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.db.repositories.AmphoraHealthRepository.'
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'get_stale_amphora', return_value=None)
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@mock.patch('octavia.db.api.get_session')
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def test_health_check_nonstale_amphora(self, session_mock,
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get_stale_amp_mock, failover_mockv2,
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failover_mock):
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get_stale_amp_mock.side_effect = [None, TestException('test')]
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exit_event = threading.Event()
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hm = healthmanager.HealthManager(exit_event)
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hm.health_check()
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session_mock.assert_called_once_with(autocommit=False)
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if CONF.api_settings.default_provider_driver == 'amphorav2':
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self.assertFalse(failover_mockv2.called)
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else:
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self.assertFalse(failover_mock.called)
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@mock.patch('octavia.controller.worker.v1.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.controller.worker.v2.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.db.repositories.AmphoraHealthRepository.'
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'get_stale_amphora', return_value=None)
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@mock.patch('octavia.db.api.get_session')
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def test_health_check_exit(self, session_mock, get_stale_amp_mock,
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failover_mockv2, failover_mock):
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get_stale_amp_mock.return_value = None
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exit_event = threading.Event()
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hm = healthmanager.HealthManager(exit_event)
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hm.health_check()
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session_mock.assert_called_once_with(autocommit=False)
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if CONF.api_settings.default_provider_driver == 'amphorav2':
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self.assertFalse(failover_mockv2.called)
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else:
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self.assertFalse(failover_mock.called)
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@mock.patch('octavia.controller.worker.v1.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.controller.worker.v2.controller_worker.'
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'ControllerWorker.failover_amphora')
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@mock.patch('octavia.db.repositories.AmphoraHealthRepository.'
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'get_stale_amphora', return_value=None)
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@mock.patch('octavia.db.api.get_session')
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def test_health_check_db_error(self, session_mock, get_stale_amp_mock,
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failover_mockv2, failover_mock):
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get_stale_amp_mock.return_value = None
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mock_session = mock.MagicMock()
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session_mock.return_value = mock_session
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session_mock.side_effect = TestException('DB Error')
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exit_event = threading.Event()
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hm = healthmanager.HealthManager(exit_event)
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self.assertRaises(TestException, hm.health_check)
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self.assertEqual(0, mock_session.rollback.call_count)
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