0e01da763a
Ceilometer compute agent dies if nova client raises an exception while it is retrieving server instances. This might happen e.g. when some OpenStack API is temporarily unavailable Fixes LP Bug #1218889 Change-Id: I808dcfae18d23240f8e095d6c97c8dede7dede8f
85 lines
3.1 KiB
Python
85 lines
3.1 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 New Dream Network, LLC (DreamHost)
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#
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# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
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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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"""Tests for ceilometer/agent/manager.py
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"""
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import mock
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from ceilometer import nova_client
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from ceilometer.compute import manager
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from ceilometer.tests import base
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from tests import agentbase
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class TestManager(base.TestCase):
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@mock.patch('ceilometer.pipeline.setup_pipeline', mock.MagicMock())
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def test_load_plugins(self):
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mgr = manager.AgentManager()
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self.assertIsNotNone(list(mgr.pollster_manager))
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class TestRunTasks(agentbase.BaseAgentManagerTestCase):
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def _fake_instance(self, name, state):
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instance = mock.MagicMock()
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instance.name = name
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setattr(instance, 'OS-EXT-STS:vm_state', state)
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return instance
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def _raise_exception(self):
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raise Exception
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def setup_manager(self):
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self.mgr = manager.AgentManager()
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@mock.patch('ceilometer.pipeline.setup_pipeline', mock.MagicMock())
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def setUp(self):
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super(TestRunTasks, self).setUp()
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# Set up a fake instance value to be returned by
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# instance_get_all_by_host() so when the manager gets the list
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# of instances to poll we can control the results.
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self.instance = self._fake_instance('faux', 'active')
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stillborn_instance = self._fake_instance('stillborn', 'error')
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self.stubs.Set(nova_client.Client, 'instance_get_all_by_host',
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lambda *x: [self.instance, stillborn_instance])
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def test_notifier_task(self):
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self.mgr.setup_notifier_task()
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self.mgr.poll_instance(None, self.instance)
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self.assertEqual(len(self.Pollster.samples), 1)
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pub = self.mgr.pipeline_manager.pipelines[0].publishers[0]
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self.assertEqual(pub.samples[0], self.Pollster.test_data)
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def test_setup_polling_tasks(self):
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super(TestRunTasks, self).test_setup_polling_tasks()
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self.assertTrue(self.Pollster.samples[0][1] is self.instance)
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def test_interval_exception_isolation(self):
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super(TestRunTasks, self).test_interval_exception_isolation()
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self.assertEqual(len(self.PollsterException.samples), 1)
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self.assertEqual(len(self.PollsterExceptionAnother.samples), 1)
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def test_manager_exception_persistency(self):
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super(TestRunTasks, self).test_manager_exception_persistency()
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self.stubs.Set(nova_client.Client, 'instance_get_all_by_host',
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lambda *x: self._raise_exception())
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mgr = manager.AgentManager()
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polling_task = manager.PollingTask(mgr)
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polling_task.poll_and_publish()
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