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  • Committer: Bazaar Package Importer
  • Author(s): Chuck Short
  • Date: 2010-12-13 10:17:01 UTC
  • mto: This revision was merged to the branch mainline in revision 8.
  • Revision ID: james.westby@ubuntu.com-20101213101701-txhhqbzsxw4avnxv
Tags: upstream-2011.1~bzr456
Import upstream version 2011.1~bzr456

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nova/db/base.py
 
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
 
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# Copyright 2010 United States Government as represented by the
 
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# Administrator of the National Aeronautics and Space Administration.
 
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# All Rights Reserved.
 
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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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"""
 
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Base class for classes that need modular database access.
 
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"""
 
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from nova import utils
 
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from nova import flags
 
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FLAGS = flags.FLAGS
 
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flags.DEFINE_string('db_driver', 'nova.db.api',
 
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                    'driver to use for database access')
 
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class Base(object):
 
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    """DB driver is injected in the init method"""
 
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    def __init__(self, db_driver=None):
 
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        if not db_driver:
 
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            db_driver = FLAGS.db_driver
 
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        self.db = utils.import_object(db_driver)  # pylint: disable-msg=C0103