OpenStack library for messaging
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# Copyright 2013 Red Hat, Inc.
#
# 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.
__all__ = ['ConfFixture']
import sys
import fixtures
def _import_opts(conf, module, opts):
__import__(module)
conf.register_opts(getattr(sys.modules[module], opts))
class ConfFixture(fixtures.Fixture):
"""Tweak configuration options for unit testing.
oslo.messaging registers a number of configuration options, but rather than
directly referencing those options, users of the API should use this
interface for querying and overriding certain configuration options.
An example usage::
self.messaging_conf = self.useFixture(messaging.ConfFixture(cfg.CONF))
self.messaging_conf.transport_driver = 'fake'
:param conf: a ConfigOpts instance
:type conf: oslo.config.cfg.ConfigOpts
"""
def __init__(self, conf):
self.conf = conf
_import_opts(self.conf,
'oslo_messaging._drivers.impl_rabbit', 'rabbit_opts')
_import_opts(self.conf,
'oslo_messaging._drivers.impl_qpid', 'qpid_opts')
_import_opts(self.conf,
'oslo_messaging._drivers.amqp', 'amqp_opts')
_import_opts(self.conf, 'oslo_messaging.rpc.client', '_client_opts')
_import_opts(self.conf, 'oslo_messaging.transport', '_transport_opts')
_import_opts(self.conf,
'oslo_messaging.notify.notifier', '_notifier_opts')
def setUp(self):
super(ConfFixture, self).setUp()
self.addCleanup(self.conf.reset)
@property
def transport_driver(self):
"""The transport driver - for example 'rabbit', 'qpid' or 'fake'."""
return self.conf.rpc_backend
@transport_driver.setter
def transport_driver(self, value):
self.conf.set_override('rpc_backend', value)
@property
def response_timeout(self):
"""Default number of seconds to wait for a response from a call."""
return self.conf.rpc_response_timeout
@response_timeout.setter
def response_timeout(self, value):
self.conf.set_override('rpc_response_timeout', value)