380ed66e47
This simplify the database test handling, and allows us to run the API tests against a real database, revealing brand new bugs! Change-Id: I39d8c1db5706dcba101799871b89d31e8d51d400 Signed-off-by: Julien Danjou <julien@danjou.info>
109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 New Dream Network, LLC (DreamHost)
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#
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# Author: Doug Hellmann <doug.hellmann@dreamhost.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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"""In-memory storage driver for use with tests.
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This driver is based on MIM, an in-memory version of MongoDB.
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"""
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import os
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from ming import mim
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from ceilometer.openstack.common import log as logging
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from ceilometer.storage import base
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from ceilometer.storage import impl_mongodb
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LOG = logging.getLogger(__name__)
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class TestDBStorage(base.StorageEngine):
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"""Put the data into an in-memory database for testing
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This driver is based on MIM, an in-memory version of MongoDB.
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Collections::
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- user
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- { _id: user id
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source: [ array of source ids reporting for the user ]
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}
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- project
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- { _id: project id
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source: [ array of source ids reporting for the project ]
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}
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- meter
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- the raw incoming data
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- resource
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- the metadata for resources
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- { _id: uuid of resource,
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metadata: metadata dictionaries
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timestamp: datetime of last update
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user_id: uuid
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project_id: uuid
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meter: [ array of {counter_name: string, counter_type: string,
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counter_unit: string} ]
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}
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"""
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OPTIONS = []
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def register_opts(self, conf):
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"""Register any configuration options used by this engine.
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"""
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conf.register_opts(self.OPTIONS)
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def get_connection(self, conf):
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"""Return a Connection instance based on the configuration settings.
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"""
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return TestConnection(conf)
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class TestConnection(impl_mongodb.Connection):
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_mim_instance = None
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FORCE_MONGO = bool(int(os.environ.get('CEILOMETER_TEST_LIVE', 0)))
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def drop_database(self, database):
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if TestConnection._mim_instance is not None:
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# Don't want to use drop_database() because we
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# may end up running out of spidermonkey instances.
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# http://davisp.lighthouseapp.com/projects/26898/tickets/22
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self.conn[database].clear()
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else:
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self.conn.drop_database(database)
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def _get_connection(self, conf):
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# Use a real MongoDB server if we can connect, but fall back
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# to a Mongo-in-memory connection if we cannot.
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if self.FORCE_MONGO:
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try:
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return super(TestConnection, self)._get_connection(conf)
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except:
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LOG.debug('Unable to connect to mongodb')
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raise
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else:
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LOG.debug('Using MIM for test connection')
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# MIM will die if we have too many connections, so use a
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# Singleton
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if TestConnection._mim_instance is None:
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LOG.debug('Creating a new MIM Connection object')
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TestConnection._mim_instance = mim.Connection()
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return TestConnection._mim_instance
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