# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2010-2012 OpenStack LLC.
# 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.

from glance.openstack.common import cfg

sql_connection_opt = cfg.StrOpt('sql_connection',
                                default='sqlite:///glance.sqlite',
                                metavar='CONNECTION',
                                help='A valid SQLAlchemy connection '
                                     'string for the registry database. '
                                     'Default: %default')

CONF = cfg.CONF
CONF.register_opt(sql_connection_opt)


def add_cli_options():
    """
    Adds any configuration options that the db layer might have.

    :retval None
    """
    CONF.unregister_opt(sql_connection_opt)
    CONF.register_cli_opt(sql_connection_opt)


def get_api():
    import glance.db.sqlalchemy.api
    return glance.db.sqlalchemy.api


# attributes common to all models
BASE_MODEL_ATTRS = set(['id', 'created_at', 'updated_at', 'deleted_at',
                        'deleted'])


IMAGE_ATTRS = BASE_MODEL_ATTRS | set(['name', 'status', 'size',
                                      'disk_format', 'container_format',
                                      'min_disk', 'min_ram', 'is_public',
                                      'location', 'checksum', 'owner',
                                      'protected'])