80826b1d10
Makes compute/network/volume API classes pluggable Splits some code out in compute/api Adds some race condition checking on deletes in compute/api Make instance_delete support UUIDs Add support to RPC to cast to specific servers Migrations for future zones Change-Id: Ibee126cd6d325e11770f27589e79dfd0e6104b99
283 lines
9.6 KiB
Python
283 lines
9.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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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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Unit Tests for remote procedure calls using kombu
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"""
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from nova import context
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from nova import flags
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from nova import log as logging
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from nova import test
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from nova.rpc import amqp as rpc_amqp
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from nova.rpc import impl_kombu
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from nova.tests.rpc import common
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FLAGS = flags.FLAGS
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LOG = logging.getLogger(__name__)
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class MyException(Exception):
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pass
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def _raise_exc_stub(stubs, times, obj, method, exc_msg):
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info = {'called': 0}
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orig_method = getattr(obj, method)
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def _raise_stub(*args, **kwargs):
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info['called'] += 1
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if info['called'] <= times:
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raise MyException(exc_msg)
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orig_method(*args, **kwargs)
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stubs.Set(obj, method, _raise_stub)
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return info
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class RpcKombuTestCase(common._BaseRpcTestCase):
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def setUp(self):
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self.rpc = impl_kombu
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super(RpcKombuTestCase, self).setUp()
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def tearDown(self):
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impl_kombu.cleanup()
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super(RpcKombuTestCase, self).tearDown()
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def test_reusing_connection(self):
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"""Test that reusing a connection returns same one."""
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conn_context = self.rpc.create_connection(new=False)
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conn1 = conn_context.connection
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conn_context.close()
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conn_context = self.rpc.create_connection(new=False)
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conn2 = conn_context.connection
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conn_context.close()
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self.assertEqual(conn1, conn2)
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def test_topic_send_receive(self):
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"""Test sending to a topic exchange/queue"""
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conn = self.rpc.create_connection()
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message = 'topic test message'
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self.received_message = None
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def _callback(message):
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self.received_message = message
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conn.declare_topic_consumer('a_topic', _callback)
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conn.topic_send('a_topic', message)
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conn.consume(limit=1)
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conn.close()
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self.assertEqual(self.received_message, message)
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def test_direct_send_receive(self):
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"""Test sending to a direct exchange/queue"""
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conn = self.rpc.create_connection()
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message = 'direct test message'
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self.received_message = None
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def _callback(message):
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self.received_message = message
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conn.declare_direct_consumer('a_direct', _callback)
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conn.direct_send('a_direct', message)
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conn.consume(limit=1)
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conn.close()
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self.assertEqual(self.received_message, message)
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def test_cast_interface_uses_default_options(self):
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"""Test kombu rpc.cast"""
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ctxt = context.RequestContext('fake_user', 'fake_project')
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class MyConnection(impl_kombu.Connection):
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def __init__(myself, *args, **kwargs):
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super(MyConnection, myself).__init__(*args, **kwargs)
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self.assertEqual(myself.params,
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{'hostname': FLAGS.rabbit_host,
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'userid': FLAGS.rabbit_userid,
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'password': FLAGS.rabbit_password,
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'port': FLAGS.rabbit_port,
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'virtual_host': FLAGS.rabbit_virtual_host,
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'transport': 'memory'})
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def topic_send(_context, topic, msg):
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pass
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MyConnection.pool = rpc_amqp.Pool(connection_cls=MyConnection)
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self.stubs.Set(impl_kombu, 'Connection', MyConnection)
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impl_kombu.cast(ctxt, 'fake_topic', {'msg': 'fake'})
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def test_cast_to_server_uses_server_params(self):
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"""Test kombu rpc.cast"""
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ctxt = context.RequestContext('fake_user', 'fake_project')
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server_params = {'username': 'fake_username',
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'password': 'fake_password',
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'hostname': 'fake_hostname',
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'port': 31337,
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'virtual_host': 'fake_virtual_host'}
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class MyConnection(impl_kombu.Connection):
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def __init__(myself, *args, **kwargs):
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super(MyConnection, myself).__init__(*args, **kwargs)
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self.assertEqual(myself.params,
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{'hostname': server_params['hostname'],
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'userid': server_params['username'],
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'password': server_params['password'],
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'port': server_params['port'],
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'virtual_host': server_params['virtual_host'],
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'transport': 'memory'})
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def topic_send(_context, topic, msg):
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pass
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MyConnection.pool = rpc_amqp.Pool(connection_cls=MyConnection)
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self.stubs.Set(impl_kombu, 'Connection', MyConnection)
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impl_kombu.cast_to_server(ctxt, server_params,
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'fake_topic', {'msg': 'fake'})
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@test.skip_test("kombu memory transport seems buggy with fanout queues "
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"as this test passes when you use rabbit (fake_rabbit=False)")
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def test_fanout_send_receive(self):
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"""Test sending to a fanout exchange and consuming from 2 queues"""
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conn = self.rpc.create_connection()
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conn2 = self.rpc.create_connection()
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message = 'fanout test message'
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self.received_message = None
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def _callback(message):
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self.received_message = message
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conn.declare_fanout_consumer('a_fanout', _callback)
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conn2.declare_fanout_consumer('a_fanout', _callback)
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conn.fanout_send('a_fanout', message)
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conn.consume(limit=1)
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conn.close()
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self.assertEqual(self.received_message, message)
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self.received_message = None
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conn2.consume(limit=1)
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conn2.close()
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self.assertEqual(self.received_message, message)
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def test_declare_consumer_errors_will_reconnect(self):
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# Test that any exception with 'timeout' in it causes a
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# reconnection
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info = _raise_exc_stub(self.stubs, 2, self.rpc.DirectConsumer,
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'__init__', 'foo timeout foo')
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conn = self.rpc.Connection()
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result = conn.declare_consumer(self.rpc.DirectConsumer,
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'test_topic', None)
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self.assertEqual(info['called'], 3)
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self.assertTrue(isinstance(result, self.rpc.DirectConsumer))
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# Test that any exception in transport.connection_errors causes
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# a reconnection
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self.stubs.UnsetAll()
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info = _raise_exc_stub(self.stubs, 1, self.rpc.DirectConsumer,
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'__init__', 'meow')
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conn = self.rpc.Connection()
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conn.connection_errors = (MyException, )
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result = conn.declare_consumer(self.rpc.DirectConsumer,
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'test_topic', None)
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self.assertEqual(info['called'], 2)
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self.assertTrue(isinstance(result, self.rpc.DirectConsumer))
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def test_publishing_errors_will_reconnect(self):
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# Test that any exception with 'timeout' in it causes a
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# reconnection when declaring the publisher class and when
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# calling send()
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info = _raise_exc_stub(self.stubs, 2, self.rpc.DirectPublisher,
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'__init__', 'foo timeout foo')
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conn = self.rpc.Connection()
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conn.publisher_send(self.rpc.DirectPublisher, 'test_topic', 'msg')
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self.assertEqual(info['called'], 3)
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self.stubs.UnsetAll()
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info = _raise_exc_stub(self.stubs, 2, self.rpc.DirectPublisher,
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'send', 'foo timeout foo')
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conn = self.rpc.Connection()
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conn.publisher_send(self.rpc.DirectPublisher, 'test_topic', 'msg')
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self.assertEqual(info['called'], 3)
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# Test that any exception in transport.connection_errors causes
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# a reconnection when declaring the publisher class and when
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# calling send()
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self.stubs.UnsetAll()
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info = _raise_exc_stub(self.stubs, 1, self.rpc.DirectPublisher,
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'__init__', 'meow')
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conn = self.rpc.Connection()
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conn.connection_errors = (MyException, )
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conn.publisher_send(self.rpc.DirectPublisher, 'test_topic', 'msg')
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self.assertEqual(info['called'], 2)
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self.stubs.UnsetAll()
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info = _raise_exc_stub(self.stubs, 1, self.rpc.DirectPublisher,
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'send', 'meow')
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conn = self.rpc.Connection()
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conn.connection_errors = (MyException, )
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conn.publisher_send(self.rpc.DirectPublisher, 'test_topic', 'msg')
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self.assertEqual(info['called'], 2)
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def test_iterconsume_errors_will_reconnect(self):
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conn = self.rpc.Connection()
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message = 'reconnect test message'
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self.received_message = None
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def _callback(message):
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self.received_message = message
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conn.declare_direct_consumer('a_direct', _callback)
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conn.direct_send('a_direct', message)
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info = _raise_exc_stub(self.stubs, 1, conn.connection,
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'drain_events', 'foo timeout foo')
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conn.consume(limit=1)
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conn.close()
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self.assertEqual(self.received_message, message)
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# Only called once, because our stub goes away during reconnection
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self.assertEqual(info['called'], 1)
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