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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import os
import fixtures
_TRUE_VALUES = ('True', 'true', '1', 'yes')
class ConfigureLogging(fixtures.Fixture):
"""Configure logging.
The behavior is managed through two environment variables. If
``OS_DEBUG`` is true then the logging level is set to debug. If
``OS_LOG_CAPTURE`` is true a FakeLogger is configured.
"True" values include ``True``, ``true``, ``1``, and ``yes``.
.. py:attribute:: logger
The logger fixture, if it is created.
.. py:attribute:: level
``logging.DEBUG`` if debug logging is enabled, otherwise
``None``.
:param format: The logging format string to use.
"""
DEFAULT_FORMAT = "%(levelname)8s [%(name)s] %(message)s"
"""Default log format"""
def __init__(self, format=DEFAULT_FORMAT):
super(ConfigureLogging, self).__init__()
self._format = format
self.level = None
if os.environ.get('OS_DEBUG') in _TRUE_VALUES:
self.level = logging.DEBUG
self.capture_logs = os.environ.get('OS_LOG_CAPTURE') in _TRUE_VALUES
self.logger = None
def setUp(self):
super(ConfigureLogging, self).setUp()
if self.capture_logs:
self.logger = self.useFixture(
fixtures.FakeLogger(
format=self._format,
level=self.level,
nuke_handlers=True,
)
)
else:
logging.basicConfig(format=self._format, level=self.level)
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