#    Copyright 2013 Mirantis, Inc.
#
#    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 logging
import os

from alembic import command
from alembic import config
from oslo.config import cfg


log = logging.getLogger(__name__)


def do_apply_migrations():
    alembic_conf = config.Config(
        os.path.join(os.path.dirname(__file__), 'alembic.ini')
    )
    alembic_conf.set_main_option('script_location',
                                 'fuel_plugin.ostf_adapter.storage:migrations')
    alembic_conf.set_main_option('sqlalchemy.url', cfg.CONF.adapter.dbpath)

    # apply initial migration
    command.upgrade(alembic_conf, 'head')


def drop_migration_meta(engine):
    engine.execute("DROP TABLE IF EXISTS alembic_version")