d4baab8a13
This change move the alarms related code of mongodb and db2 driver to the alarm storage subtree. Partial implements blueprint dedicated-alarm-database Change-Id: I9ac0842fdb3cbfc3fd6b9aa76a9ec6df8fee244f
69 lines
2.5 KiB
Python
69 lines
2.5 KiB
Python
#
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# Copyright 2012 New Dream Network, LLC (DreamHost)
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# Copyright 2013 eNovance
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# Copyright 2014 Red Hat, Inc
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#
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# Authors: Doug Hellmann <doug.hellmann@dreamhost.com>
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# Julien Danjou <julien@danjou.info>
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# Eoghan Glynn <eglynn@redhat.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""MongoDB storage backend"""
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from oslo.config import cfg
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import pymongo
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from ceilometer.alarm.storage import pymongo_base
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from ceilometer.openstack.common import log
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from ceilometer import storage
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from ceilometer.storage.mongo import utils as pymongo_utils
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cfg.CONF.import_opt('time_to_live', 'ceilometer.storage',
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group="database")
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LOG = log.getLogger(__name__)
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class Connection(pymongo_base.Connection):
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"""Put the alarm data into a MongoDB database."""
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CONNECTION_POOL = pymongo_utils.ConnectionPool()
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def __init__(self, url):
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# NOTE(jd) Use our own connection pooling on top of the Pymongo one.
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# We need that otherwise we overflow the MongoDB instance with new
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# connection since we instanciate a Pymongo client each time someone
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# requires a new storage connection.
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self.conn = self.CONNECTION_POOL.connect(url)
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# Require MongoDB 2.4 to use $setOnInsert
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if self.conn.server_info()['versionArray'] < [2, 4]:
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raise storage.StorageBadVersion("Need at least MongoDB 2.4")
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connection_options = pymongo.uri_parser.parse_uri(url)
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self.db = getattr(self.conn, connection_options['database'])
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if connection_options.get('username'):
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self.db.authenticate(connection_options['username'],
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connection_options['password'])
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# NOTE(jd) Upgrading is just about creating index, so let's do this
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# on connection to be sure at least the TTL is correcly updated if
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# needed.
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self.upgrade()
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def clear(self):
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self.conn.drop_database(self.db)
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# Connection will be reopened automatically if needed
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self.conn.close()
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