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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012, 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.
"""
Unit Tests for rpc.proxy
"""
import copy
from openstack.common import context
from openstack.common.fixture import moxstubout
from openstack.common import rpc
from openstack.common.rpc import proxy
from tests import utils
class RpcProxyTestCase(utils.BaseTestCase):
def _test_rpc_method(self, rpc_method, has_timeout=False, has_retval=False,
server_params=None, supports_topic_override=True):
topic = 'fake_topic'
timeout = 123
rpc_proxy = proxy.RpcProxy(topic, '1.0')
ctxt = context.RequestContext('fake_user', 'fake_project')
msg = {'method': 'fake_method', 'args': {'x': 'y'}}
expected_msg = {'method': 'fake_method', 'args': {'x': 'y'},
'version': '1.0'}
expected_retval = 'hi' if has_retval else None
self.fake_args = None
self.fake_kwargs = None
def _fake_rpc_method(*args, **kwargs):
self.fake_args = args
self.fake_kwargs = kwargs
if has_retval:
return expected_retval
self.stubs.Set(rpc, rpc_method, _fake_rpc_method)
args = [ctxt, msg]
if server_params:
args.insert(1, server_params)
# Base method usage
retval = getattr(rpc_proxy, rpc_method)(*args)
self.assertEqual(retval, expected_retval)
expected_args = [ctxt, topic, expected_msg]
if server_params:
expected_args.insert(1, server_params)
for arg, expected_arg in zip(self.fake_args, expected_args):
self.assertEqual(arg, expected_arg)
# overriding the version
retval = getattr(rpc_proxy, rpc_method)(*args, version='1.1')
self.assertEqual(retval, expected_retval)
new_msg = copy.deepcopy(expected_msg)
new_msg['version'] = '1.1'
expected_args = [ctxt, topic, new_msg]
if server_params:
expected_args.insert(1, server_params)
for arg, expected_arg in zip(self.fake_args, expected_args):
self.assertEqual(arg, expected_arg)
if has_timeout:
# set a timeout
retval = getattr(rpc_proxy, rpc_method)(ctxt, msg, timeout=timeout)
self.assertEqual(retval, expected_retval)
expected_args = [ctxt, topic, expected_msg, timeout]
for arg, expected_arg in zip(self.fake_args, expected_args):
self.assertEqual(arg, expected_arg)
if supports_topic_override:
# set a topic
new_topic = 'foo.bar'
retval = getattr(rpc_proxy, rpc_method)(*args, topic=new_topic)
self.assertEqual(retval, expected_retval)
expected_args = [ctxt, new_topic, expected_msg]
if server_params:
expected_args.insert(1, server_params)
for arg, expected_arg in zip(self.fake_args, expected_args):
self.assertEqual(arg, expected_arg)
def test_call(self):
self._test_rpc_method('call', has_timeout=True, has_retval=True)
def test_multicall(self):
self._test_rpc_method('multicall', has_timeout=True, has_retval=True)
def test_cast(self):
self._test_rpc_method('cast')
def test_fanout_cast(self):
self._test_rpc_method('fanout_cast', supports_topic_override=False)
def test_cast_to_server(self):
self._test_rpc_method('cast_to_server', server_params={'blah': 1})
def test_fanout_cast_to_server(self):
self._test_rpc_method(
'fanout_cast_to_server',
server_params={'blah': 1}, supports_topic_override=False)
def test_make_msg(self):
self.assertEqual(proxy.RpcProxy.make_msg('test_method', a=1, b=2),
{'method': 'test_method', 'args': {'a': 1, 'b': 2}})
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