74 lines
2.8 KiB
Python
74 lines
2.8 KiB
Python
# Copyright 2012 New Dream Network, LLC (DreamHost)
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# Copyright 2013 eNovance
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# Copyright 2013 IBM Corp
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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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"""DB2 storage backend
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"""
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from __future__ import division
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from oslo_log import log
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import pymongo
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from ceilometer.alarm.storage import pymongo_base
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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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LOG = log.getLogger(__name__)
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class Connection(pymongo_base.Connection):
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"""The db2 alarm storage for Ceilometer."""
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CONNECTION_POOL = pymongo_utils.ConnectionPool()
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def __init__(self, url):
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# Since we are using pymongo, even though we are connecting to DB2
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# we still have to make sure that the scheme which used to distinguish
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# db2 driver from mongodb driver be replaced so that pymongo will not
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# produce an exception on the scheme.
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url = url.replace('db2:', 'mongodb:', 1)
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self.conn = self.CONNECTION_POOL.connect(url)
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# Require MongoDB 2.2 to use aggregate(), since we are using mongodb
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# as backend for test, the following code is necessary to make sure
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# that the test wont try aggregate on older mongodb during the test.
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# For db2, the versionArray won't be part of the server_info, so there
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# will not be exception when real db2 gets used as backend.
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server_info = self.conn.server_info()
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if server_info.get('sysInfo'):
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self._using_mongodb = True
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else:
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self._using_mongodb = False
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if self._using_mongodb and server_info.get('versionArray') < [2, 2]:
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raise storage.StorageBadVersion("Need at least MongoDB 2.2")
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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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self.upgrade()
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def clear(self):
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# drop_database command does nothing on db2 database since this has
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# not been implemented. However calling this method is important for
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# removal of all the empty dbs created during the test runs since
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# test run is against mongodb on Jenkins
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self.conn.drop_database(self.db.name)
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self.conn.close()
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