baf3d2e372
This patch adds several guidelines:
* Global constants should be ALL_CAPS (cfg => CFG)
* Prefer single-quotes over double-quotes ("foo" => 'foo')
* Place a space before TODO in comments ("#TODO" => "# TODO")
Change-Id: Ib5b5c5916744856eca2ecaa37e949a3cdc4b3bd7
72 lines
2.0 KiB
Python
72 lines
2.0 KiB
Python
# Copyright (c) 2013 Red Hat, Inc.
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#
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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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"""Mongodb storage driver implementation."""
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import pymongo
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import pymongo.errors
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from marconi.openstack.common import log as logging
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from marconi import storage
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from marconi.storage.mongodb import controllers
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from marconi.storage.mongodb import options
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LOG = logging.getLogger(__name__)
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class Driver(storage.DriverBase):
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def __init__(self):
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# Lazy instantiation
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self._database = None
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@property
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def db(self):
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"""Property for lazy instantiation of mongodb's database."""
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if self._database is None:
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if options.CFG.uri and 'replicaSet' in options.CFG.uri:
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conn = pymongo.MongoReplicaSetClient(options.CFG.uri)
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else:
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conn = pymongo.MongoClient(options.CFG.uri)
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self._database = conn[options.CFG.database]
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return self._database
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def gc(self):
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LOG.info('Performing garbage collection.')
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try:
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self.message_controller.remove_expired()
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except pymongo.errors.ConnectionFailure as ex:
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# Better luck next time...
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LOG.exception(ex)
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@property
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def gc_interval(self):
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return options.CFG.gc_interval
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@property
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def queue_controller(self):
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return controllers.QueueController(self)
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@property
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def message_controller(self):
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return controllers.MessageController(self)
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@property
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def claim_controller(self):
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return controllers.ClaimController(self)
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