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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 Cloudscaling Group, 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 logging
import eventlet
from openstack.common import importutils
from openstack.common.rpc import matchmaker_redis as matchmaker
from tests.unit.rpc import matchmaker_common as common
from tests import utils
redis = importutils.try_import('redis')
LOG = logging.getLogger(__name__)
class MatchMakerRedisLookupTestCase(utils.BaseTestCase,
common._MatchMakerTestCase):
"""Test lookups against the Redis matchmaker"""
def setUp(self):
super(MatchMakerRedisLookupTestCase, self).setUp()
if not redis:
self.skipTest("Redis required for test.")
self.config(matchmaker_heartbeat_ttl=1)
self.topic = "test"
self.hosts = map(lambda x: 'mockhost-' + str(x), range(1, 10))
try:
self.driver = matchmaker.MatchMakerRedis()
self.driver.redis.connection_pool.connection_kwargs[
'socket_timeout'] = 1
# Test the connection
self.driver.redis.ping()
except redis.exceptions.ConnectionError:
raise self.skipTest("Redis server not available.")
# Wipe all entries...
for host in self.hosts:
self.driver.unregister(self.topic, host)
for h in self.hosts:
self.driver.register(self.topic, h)
self.driver.start_heartbeat()
def tearDown(self):
super(MatchMakerRedisLookupTestCase, self).tearDown()
if not redis:
self.skipTest("Redis required for test.")
self.driver.stop_heartbeat()
class MatchMakerRedisHeartbeatTestCase(utils.BaseTestCase,
common._MatchMakerDynRegTestCase):
"""Test the ability to register and perform heartbeats."""
def setUp(self):
super(MatchMakerRedisHeartbeatTestCase, self).setUp()
if not redis:
self.skipTest("Redis required for test.")
self.config(matchmaker_heartbeat_ttl=1)
self.driver = matchmaker.MatchMakerRedis()
self.topic = "test"
self.hosts = map(lambda x: 'mockhost-' + str(x), range(1, 10))
try:
self.driver = matchmaker.MatchMakerRedis()
self.driver.redis.connection_pool.connection_kwargs[
'socket_timeout'] = 1
# Test the connection
self.driver.redis.ping()
except redis.exceptions.ConnectionError:
raise self.skipTest("Redis server not available.")
# Wipe all entries...
for host in self.hosts:
self.driver.unregister(self.topic, host)
def test_expires_set(self):
"""
Test that expirations are set.
"""
self.driver.register(self.topic, self.hosts[0])
ttl = self.driver.redis.ttl('.'.join((self.topic, self.hosts[0])))
self.assertTrue(ttl > -1)
def test_expires_hosts(self):
"""
Tests that hosts expire.
Registers a host, ensures it is registered,
then waits for it to expire. Ensures is no
longer registered.
"""
self.driver.register(self.topic, self.hosts[0])
key_host = '.'.join((self.topic, self.hosts[0]))
ttl = self.driver.redis.ttl(key_host)
eventlet.sleep(ttl + 1)
ttl2 = self.driver.redis.ttl(key_host)
# Tests that host has actually expired.
self.assertEqual(ttl2, -1)
def test_expired_hosts_removed(self):
"""
Test that expired hosts are removed from results.
"""
self.test_expires_hosts()
self.assertEqual(self.driver.queues(self.topic), [])
class MatchMakerRedisTestCase(utils.BaseTestCase):
"""Generic tests that do not require a Redis server."""
def test_redis_import_exception(self):
"""
Try initializing an object without redis.
"""
matchmaker.redis = None
self.assertRaises(ImportError, matchmaker.MatchMakerRedis)
reload(matchmaker)
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