cb0df591a9
This change adds the ability to monitor the local ovsdb for interface changes so that the l2 agent can avoid unnecessary polling. Minimal changes are made to the agent so the risk of breakage should be low. Future efforts to make the agent entirely event-based may be able to use OvsdbMonitor as a starting point. By default polling minimization is not done, and can only be enabled by setting 'minimize_polling = True' in the ovs section of the l2 agent's config file. Closes-Bug: #1177973 Change-Id: I26c035b48a74df2148696869c5a9affae5ab3d27
100 lines
3.3 KiB
Python
100 lines
3.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010-2011 OpenStack Foundation
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# All Rights Reserved.
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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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"""Base Test Case for all Unit Tests"""
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import contextlib
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import logging
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import os
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import eventlet.timeout
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import fixtures
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from oslo.config import cfg
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import stubout
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import testtools
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from neutron.common import exceptions
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CONF = cfg.CONF
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TRUE_STRING = ['True', '1']
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LOG_FORMAT = "%(asctime)s %(levelname)8s [%(name)s] %(message)s"
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class BaseTestCase(testtools.TestCase):
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def setUp(self):
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super(BaseTestCase, self).setUp()
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if os.environ.get('OS_DEBUG') in TRUE_STRING:
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_level = logging.DEBUG
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else:
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_level = logging.INFO
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capture_logs = os.environ.get('OS_LOG_CAPTURE') in TRUE_STRING
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if not capture_logs:
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logging.basicConfig(format=LOG_FORMAT, level=_level)
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self.log_fixture = self.useFixture(
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fixtures.FakeLogger(
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format=LOG_FORMAT,
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level=_level,
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nuke_handlers=capture_logs,
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))
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test_timeout = int(os.environ.get('OS_TEST_TIMEOUT', 0))
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if test_timeout == -1:
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test_timeout = 0
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if test_timeout > 0:
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self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
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# If someone does use tempfile directly, ensure that it's cleaned up
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self.useFixture(fixtures.NestedTempfile())
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self.useFixture(fixtures.TempHomeDir())
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self.addCleanup(CONF.reset)
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if os.environ.get('OS_STDOUT_CAPTURE') in TRUE_STRING:
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stdout = self.useFixture(fixtures.StringStream('stdout')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
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if os.environ.get('OS_STDERR_CAPTURE') in TRUE_STRING:
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stderr = self.useFixture(fixtures.StringStream('stderr')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
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self.stubs = stubout.StubOutForTesting()
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self.stubs.Set(exceptions, '_FATAL_EXCEPTION_FORMAT_ERRORS', True)
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def config(self, **kw):
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"""Override some configuration values.
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The keyword arguments are the names of configuration options to
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override and their values.
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If a group argument is supplied, the overrides are applied to
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the specified configuration option group.
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All overrides are automatically cleared at the end of the current
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test by the fixtures cleanup process.
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"""
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group = kw.pop('group', None)
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for k, v in kw.iteritems():
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CONF.set_override(k, v, group)
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@contextlib.contextmanager
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def assert_max_execution_time(self, max_execution_time=5):
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with eventlet.timeout.Timeout(max_execution_time, False):
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yield
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return
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self.fail('Execution of this test timed out')
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