# Copyright (c) 2012 OpenStack Foundation # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. """Base class for classes that need modular database access.""" from oslo_config import cfg from oslo_utils import importutils db_driver_opt = cfg.StrOpt('db_driver', default='ord.db', help='The driver to use for database access') CONF = cfg.CONF CONF.register_opt(db_driver_opt) class Base(object): """DB driver is injected in the init method.""" def __init__(self, db_driver=None): super(Base, self).__init__() if not db_driver: db_driver = CONF.db_driver self.db = importutils.import_module(db_driver)