76f6e063db
This patch implements the standard controllers for the redis storage driver. It has been tested against a localhost Redis server with ZAQAR_TEST_REDIS=1. Change-Id: Ib7c100afd11a0410c3f241c1925d5aaf172ce6a8 Partially-Implements: blueprint redis-storage-driver
108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
# Copyright (c) 2014 Prashanth Raghu.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import redis
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from six.moves import urllib
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from zaqar.common import decorators
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from zaqar.openstack.common import log as logging
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from zaqar.queues import storage
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from zaqar.queues.storage.redis import controllers
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from zaqar.queues.storage.redis import options
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LOG = logging.getLogger(__name__)
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def _get_redis_client(conf):
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# TODO(prashanthr_): Add SSL support
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parsed_url = urllib.parse.urlparse(conf.uri)
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if parsed_url.hostname:
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return redis.StrictRedis(host=parsed_url.hostname,
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port=parsed_url.port)
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else:
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return redis.StrictRedis(unix_socket_path=parsed_url.path)
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class DataDriver(storage.DataDriverBase):
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def __init__(self, conf, cache):
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super(DataDriver, self).__init__(conf, cache)
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opts = options.REDIS_OPTIONS
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if 'dynamic' in conf:
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names = conf[options.REDIS_GROUP].keys()
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opts = filter(lambda x: x.name not in names, opts)
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self.conf.register_opts(opts,
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group=options.REDIS_GROUP)
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self.redis_conf = self.conf[options.REDIS_GROUP]
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def is_alive(self):
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try:
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return self.connection.ping()
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except redis.exceptions.ConnectionError:
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return False
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def _health(self):
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KPI = {}
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KPI['storage_reachable'] = self.is_alive()
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KPI['operation_status'] = self._get_operation_status()
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# TODO(kgriffs): Add metrics re message volume
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return KPI
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@decorators.lazy_property(write=False)
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def connection(self):
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"""Redis client connection instance."""
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return _get_redis_client(self.redis_conf)
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@decorators.lazy_property(write=False)
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def queue_controller(self):
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return controllers.QueueController(self)
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@decorators.lazy_property(write=False)
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def message_controller(self):
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return controllers.MessageController(self)
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@decorators.lazy_property(write=False)
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def claim_controller(self):
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return controllers.ClaimController(self)
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class ControlDriver(storage.ControlDriverBase):
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def __init__(self, conf, cache):
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super(ControlDriver, self).__init__(conf, cache)
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self.conf.register_opts(options.REDIS_OPTIONS,
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group=options.REDIS_GROUP)
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self.redis_conf = self.conf[options.REDIS_GROUP]
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@decorators.lazy_property(write=False)
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def connection(self):
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"""Redis client connection instance."""
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return _get_redis_client(self.redis_conf)
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@property
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def pools_controller(self):
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return None
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@property
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def catalogue_controller(self):
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return None
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