/usr/lib/python2.7/dist-packages/tooz/drivers/zake.py is in python-tooz 1.40.0-4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | # Copyright (c) 2013-2014 Mirantis Inc. 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.
from __future__ import absolute_import
from zake import fake_client
from zake import fake_storage
from tooz import coordination
from tooz.drivers import zookeeper
class ZakeDriver(zookeeper.KazooDriver):
"""This driver uses the `zake`_ client to mimic real `zookeeper`_ servers.
It **should** be mainly used (and **is** really only intended to be used in
this manner) for testing and integration (where real `zookeeper`_ servers
are typically not available).
.. _zake: https://pypi.python.org/pypi/zake
.. _zookeeper: http://zookeeper.apache.org/
"""
CHARACTERISTICS = (
coordination.Characteristics.NON_TIMEOUT_BASED,
coordination.Characteristics.DISTRIBUTED_ACROSS_THREADS,
)
"""
Tuple of :py:class:`~tooz.coordination.Characteristics` introspectable
enum member(s) that can be used to interogate how this driver works.
"""
# NOTE(harlowja): this creates a shared backend 'storage' layer that
# would typically exist inside a zookeeper server, but since zake has
# no concept of a 'real' zookeeper server we create a fake one and share
# it among active clients to simulate zookeeper's consistent storage in
# a thread-safe manner.
fake_storage = fake_storage.FakeStorage(
fake_client.k_threading.SequentialThreadingHandler())
@classmethod
def _make_client(cls, parsed_url, options):
if 'storage' in options:
storage = options['storage']
else:
storage = cls.fake_storage
return fake_client.FakeClient(storage=storage)
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