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# Copyright (c) AT&T 2012-2013 Yun Mao <yunmao@gmail.com>
# Copyright 2012 IBM Corp.
#
# 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.
"""Test the ZooKeeper driver for servicegroup.
You need to install ZooKeeper locally and related dependencies
to run the test. It's unclear how to install python-zookeeper lib
in venv so you might have to run the test without it.
To set up in Ubuntu 12.04:
$ sudo apt-get install zookeeper zookeeperd python-zookeeper
$ sudo pip install evzookeeper
$ nosetests nova.tests.servicegroup.test_zk_driver
"""
import eventlet
from nova import servicegroup
from nova import test
class ZKServiceGroupTestCase(test.TestCase):
def setUp(self):
super(ZKServiceGroupTestCase, self).setUp()
servicegroup.API._driver = None
from nova.servicegroup.drivers import zk
self.flags(servicegroup_driver='zk')
self.flags(address='localhost:2181', group="zookeeper")
try:
_unused = zk.ZooKeeperDriver()
except ImportError:
self.skipTest("Unable to test due to lack of ZooKeeper")
def test_join_leave(self):
self.servicegroup_api = servicegroup.API()
service_id = {'topic': 'unittest', 'host': 'serviceA'}
self.servicegroup_api.join(service_id['host'], service_id['topic'])
self.assertTrue(self.servicegroup_api.service_is_up(service_id))
self.servicegroup_api.leave(service_id['host'], service_id['topic'])
# make sure zookeeper is updated and watcher is triggered
eventlet.sleep(1)
self.assertFalse(self.servicegroup_api.service_is_up(service_id))
def test_stop(self):
self.servicegroup_api = servicegroup.API()
service_id = {'topic': 'unittest', 'host': 'serviceA'}
pulse = self.servicegroup_api.join(service_id['host'],
service_id['topic'], None)
self.assertTrue(self.servicegroup_api.service_is_up(service_id))
pulse.stop()
eventlet.sleep(1)
self.assertFalse(self.servicegroup_api.service_is_up(service_id))
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