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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.
import sys
import fixtures
from functools import wraps
__all__ = ['ConfFixture']
def _import_opts(conf, module, opts, group=None):
__import__(module)
conf.register_opts(getattr(sys.modules[module], opts), group=group)
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_url = 'fake:/'
:param conf: a ConfigOpts instance
:type conf: oslo.config.cfg.ConfigOpts
:param transport_url: override default transport_url value
:type transport_url: str
"""
def __init__(self, conf, transport_url=None):
self.conf = conf
_import_opts(self.conf,
'oslo_messaging._drivers.impl_rabbit', 'rabbit_opts',
'oslo_messaging_rabbit')
_import_opts(self.conf,
'oslo_messaging._drivers.base', 'base_opts',
'oslo_messaging_rabbit')
_import_opts(self.conf,
'oslo_messaging._drivers.amqp', 'amqp_opts',
'oslo_messaging_rabbit')
_import_opts(self.conf,
'oslo_messaging._drivers.amqp1_driver.opts',
'amqp1_opts', 'oslo_messaging_amqp')
_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.rpc.dispatcher',
'_dispatcher_opts')
_import_opts(self.conf,
'oslo_messaging.notify.notifier',
'_notifier_opts',
'oslo_messaging_notifications')
_import_opts(self.conf,
'oslo_messaging._metrics.client',
'oslo_messaging_metrics',
'oslo_messaging_metrics')
if transport_url is not None:
self.transport_url = transport_url
def _setup_decorator(self):
# Support older test cases that still use the set_override
# with the old config key names
def decorator_for_set_override(wrapped_function):
@wraps(wrapped_function)
def _wrapper(*args, **kwargs):
group = 'oslo_messaging_notifications'
if args[0] == 'notification_driver':
args = ('driver', args[1], group)
elif args[0] == 'notification_transport_url':
args = ('transport_url', args[1], group)
elif args[0] == 'notification_topics':
args = ('topics', args[1], group)
return wrapped_function(*args, **kwargs)
_wrapper.wrapped = wrapped_function
return _wrapper
def decorator_for_clear_override(wrapped_function):
@wraps(wrapped_function)
def _wrapper(*args, **kwargs):
group = 'oslo_messaging_notifications'
if args[0] == 'notification_driver':
args = ('driver', group)
elif args[0] == 'notification_transport_url':
args = ('transport_url', group)
elif args[0] == 'notification_topics':
args = ('topics', group)
return wrapped_function(*args, **kwargs)
_wrapper.wrapped = wrapped_function
return _wrapper
if not hasattr(self.conf.set_override, 'wrapped'):
self.conf.set_override = decorator_for_set_override(
self.conf.set_override)
if not hasattr(self.conf.clear_override, 'wrapped'):
self.conf.clear_override = decorator_for_clear_override(
self.conf.clear_override)
def _teardown_decorator(self):
if hasattr(self.conf.set_override, 'wrapped'):
self.conf.set_override = self.conf.set_override.wrapped
if hasattr(self.conf.clear_override, 'wrapped'):
self.conf.clear_override = self.conf.clear_override.wrapped
def setUp(self):
super(ConfFixture, self).setUp()
self._setup_decorator()
self.addCleanup(self._teardown_decorator)
self.addCleanup(self.conf.reset)
@property
def transport_url(self):
"""The transport url"""
return self.conf.transport_url
@transport_url.setter
def transport_url(self, value):
self.conf.set_override('transport_url', 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)
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