208 lines
7.9 KiB
Python
208 lines
7.9 KiB
Python
# Copyright (c) 2012 Rackspace Hosting
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# All Rights Reserved.
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# Copyright 2013 Red Hat, Inc.
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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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"""
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Tests For Cells RPC Communication Driver
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"""
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from mox3 import mox
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from oslo.config import cfg
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from oslo import messaging as oslo_messaging
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from nova.cells import messaging
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from nova.cells import rpc_driver
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from nova import context
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from nova import rpc
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from nova import test
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from nova.tests.unit.cells import fakes
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CONF = cfg.CONF
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CONF.import_opt('rpc_driver_queue_base', 'nova.cells.rpc_driver',
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group='cells')
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class CellsRPCDriverTestCase(test.NoDBTestCase):
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"""Test case for Cells communication via RPC."""
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def setUp(self):
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super(CellsRPCDriverTestCase, self).setUp()
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fakes.init(self)
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self.ctxt = context.RequestContext('fake', 'fake')
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self.driver = rpc_driver.CellsRPCDriver()
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def test_start_servers(self):
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self.flags(rpc_driver_queue_base='cells.intercell42', group='cells')
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fake_msg_runner = fakes.get_message_runner('api-cell')
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class FakeInterCellRPCDispatcher(object):
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def __init__(_self, msg_runner):
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self.assertEqual(fake_msg_runner, msg_runner)
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self.stubs.Set(rpc_driver, 'InterCellRPCDispatcher',
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FakeInterCellRPCDispatcher)
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self.mox.StubOutWithMock(rpc, 'get_server')
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for message_type in messaging.MessageRunner.get_message_types():
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topic = 'cells.intercell42.' + message_type
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target = oslo_messaging.Target(topic=topic, server=CONF.host)
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endpoints = [mox.IsA(FakeInterCellRPCDispatcher)]
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rpcserver = self.mox.CreateMockAnything()
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rpc.get_server(target, endpoints=endpoints).AndReturn(rpcserver)
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rpcserver.start()
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self.mox.ReplayAll()
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self.driver.start_servers(fake_msg_runner)
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def test_stop_servers(self):
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call_info = {'stopped': []}
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class FakeRPCServer(object):
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def stop(self):
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call_info['stopped'].append(self)
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fake_servers = [FakeRPCServer() for x in xrange(5)]
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self.driver.rpc_servers = fake_servers
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self.driver.stop_servers()
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self.assertEqual(fake_servers, call_info['stopped'])
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def test_send_message_to_cell_cast(self):
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msg_runner = fakes.get_message_runner('api-cell')
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cell_state = fakes.get_cell_state('api-cell', 'child-cell2')
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message = messaging._TargetedMessage(msg_runner,
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self.ctxt, 'fake', {}, 'down', cell_state, fanout=False)
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expected_server_params = {'hostname': 'rpc_host2',
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'password': 'password2',
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'port': 3092,
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'username': 'username2',
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'virtual_host': 'rpc_vhost2'}
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expected_url = ('rabbit://%(username)s:%(password)s@'
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'%(hostname)s:%(port)d/%(virtual_host)s' %
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expected_server_params)
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def check_transport_url(cell_state):
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return cell_state.db_info['transport_url'] == expected_url
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rpcapi = self.driver.intercell_rpcapi
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rpcclient = self.mox.CreateMockAnything()
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self.mox.StubOutWithMock(rpcapi, '_get_client')
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rpcapi._get_client(
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mox.Func(check_transport_url),
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'cells.intercell.targeted').AndReturn(rpcclient)
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rpcclient.cast(mox.IgnoreArg(), 'process_message',
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message=message.to_json())
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self.mox.ReplayAll()
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self.driver.send_message_to_cell(cell_state, message)
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def test_send_message_to_cell_fanout_cast(self):
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msg_runner = fakes.get_message_runner('api-cell')
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cell_state = fakes.get_cell_state('api-cell', 'child-cell2')
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message = messaging._TargetedMessage(msg_runner,
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self.ctxt, 'fake', {}, 'down', cell_state, fanout=True)
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expected_server_params = {'hostname': 'rpc_host2',
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'password': 'password2',
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'port': 3092,
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'username': 'username2',
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'virtual_host': 'rpc_vhost2'}
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expected_url = ('rabbit://%(username)s:%(password)s@'
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'%(hostname)s:%(port)d/%(virtual_host)s' %
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expected_server_params)
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def check_transport_url(cell_state):
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return cell_state.db_info['transport_url'] == expected_url
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rpcapi = self.driver.intercell_rpcapi
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rpcclient = self.mox.CreateMockAnything()
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self.mox.StubOutWithMock(rpcapi, '_get_client')
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rpcapi._get_client(
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mox.Func(check_transport_url),
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'cells.intercell.targeted').AndReturn(rpcclient)
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rpcclient.prepare(fanout=True).AndReturn(rpcclient)
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rpcclient.cast(mox.IgnoreArg(), 'process_message',
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message=message.to_json())
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self.mox.ReplayAll()
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self.driver.send_message_to_cell(cell_state, message)
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def test_rpc_topic_uses_message_type(self):
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self.flags(rpc_driver_queue_base='cells.intercell42', group='cells')
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msg_runner = fakes.get_message_runner('api-cell')
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cell_state = fakes.get_cell_state('api-cell', 'child-cell2')
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message = messaging._BroadcastMessage(msg_runner,
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self.ctxt, 'fake', {}, 'down', fanout=True)
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message.message_type = 'fake-message-type'
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expected_server_params = {'hostname': 'rpc_host2',
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'password': 'password2',
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'port': 3092,
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'username': 'username2',
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'virtual_host': 'rpc_vhost2'}
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expected_url = ('rabbit://%(username)s:%(password)s@'
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'%(hostname)s:%(port)d/%(virtual_host)s' %
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expected_server_params)
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def check_transport_url(cell_state):
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return cell_state.db_info['transport_url'] == expected_url
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rpcapi = self.driver.intercell_rpcapi
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rpcclient = self.mox.CreateMockAnything()
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self.mox.StubOutWithMock(rpcapi, '_get_client')
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rpcapi._get_client(
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mox.Func(check_transport_url),
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'cells.intercell42.fake-message-type').AndReturn(rpcclient)
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rpcclient.prepare(fanout=True).AndReturn(rpcclient)
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rpcclient.cast(mox.IgnoreArg(), 'process_message',
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message=message.to_json())
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self.mox.ReplayAll()
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self.driver.send_message_to_cell(cell_state, message)
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def test_process_message(self):
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msg_runner = fakes.get_message_runner('api-cell')
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dispatcher = rpc_driver.InterCellRPCDispatcher(msg_runner)
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message = messaging._BroadcastMessage(msg_runner,
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self.ctxt, 'fake', {}, 'down', fanout=True)
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call_info = {}
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def _fake_message_from_json(json_message):
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call_info['json_message'] = json_message
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self.assertEqual(message.to_json(), json_message)
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return message
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def _fake_process():
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call_info['process_called'] = True
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self.stubs.Set(msg_runner, 'message_from_json',
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_fake_message_from_json)
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self.stubs.Set(message, 'process', _fake_process)
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dispatcher.process_message(self.ctxt, message.to_json())
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self.assertEqual(message.to_json(), call_info['json_message'])
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self.assertTrue(call_info['process_called'])
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