# Copyright 2013 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.

import sqlalchemy

from glance.db.sqlalchemy.migrate_repo import schema


def upgrade(migrate_engine):
    meta = sqlalchemy.schema.MetaData()
    meta.bind = migrate_engine

    image_locations_table = sqlalchemy.Table('image_locations',
                                             meta,
                                             autoload=True)

    meta_data = sqlalchemy.Column('meta_data',
                                  schema.PickleType(),
                                  default={})
    meta_data.create(image_locations_table)


def downgrade(migrate_engine):
    meta = sqlalchemy.schema.MetaData()
    meta.bind = migrate_engine

    image_locations_table = sqlalchemy.Table('image_locations',
                                             meta,
                                             autoload=True)

    image_locations_table.columns['meta_data'].drop()
