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# -*- coding: utf-8 -*-
# Copyright (C) 2014 AT&T Labs All Rights Reserved.
#
# 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 contextlib
from kazoo import exceptions as kazoo_exceptions
from oslo_utils import uuidutils
import testtools
from zake import fake_client
from taskflow import exceptions as exc
from taskflow.persistence import backends
from taskflow.persistence.backends import impl_zookeeper
from taskflow import test
from taskflow.tests.unit.persistence import base
from taskflow.tests import utils as test_utils
from taskflow.utils import kazoo_utils
TEST_PATH_TPL = '/taskflow/persistence-test/%s'
_ZOOKEEPER_AVAILABLE = test_utils.zookeeper_available(
impl_zookeeper.MIN_ZK_VERSION)
def clean_backend(backend, conf):
with contextlib.closing(backend.get_connection()) as conn:
try:
conn.clear_all()
except exc.NotFound:
pass
client = kazoo_utils.make_client(conf)
client.start()
try:
client.delete(conf['path'], recursive=True)
except kazoo_exceptions.NoNodeError:
pass
finally:
kazoo_utils.finalize_client(client)
@testtools.skipIf(not _ZOOKEEPER_AVAILABLE, 'zookeeper is not available')
class ZkPersistenceTest(test.TestCase, base.PersistenceTestMixin):
def _get_connection(self):
return self.backend.get_connection()
def setUp(self):
super(ZkPersistenceTest, self).setUp()
conf = test_utils.ZK_TEST_CONFIG.copy()
# Create a unique path just for this test (so that we don't overwrite
# what other tests are doing).
conf['path'] = TEST_PATH_TPL % (uuidutils.generate_uuid())
try:
self.backend = impl_zookeeper.ZkBackend(conf)
except Exception as e:
self.skipTest("Failed creating backend created from configuration"
" %s due to %s" % (conf, e))
else:
self.addCleanup(self.backend.close)
self.addCleanup(clean_backend, self.backend, conf)
with contextlib.closing(self.backend.get_connection()) as conn:
conn.upgrade()
def test_zk_persistence_entry_point(self):
conf = {'connection': 'zookeeper:'}
with contextlib.closing(backends.fetch(conf)) as be:
self.assertIsInstance(be, impl_zookeeper.ZkBackend)
@testtools.skipIf(_ZOOKEEPER_AVAILABLE, 'zookeeper is available')
class ZakePersistenceTest(test.TestCase, base.PersistenceTestMixin):
def _get_connection(self):
return self._backend.get_connection()
def setUp(self):
super(ZakePersistenceTest, self).setUp()
conf = {
"path": "/taskflow",
}
self.client = fake_client.FakeClient()
self.client.start()
self._backend = impl_zookeeper.ZkBackend(conf, client=self.client)
conn = self._backend.get_connection()
conn.upgrade()
def test_zk_persistence_entry_point(self):
conf = {'connection': 'zookeeper:'}
with contextlib.closing(backends.fetch(conf)) as be:
self.assertIsInstance(be, impl_zookeeper.ZkBackend)
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