text: #
  #    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 heat.db.sqlalchemy.types import Json
  from heat.db.sqlalchemy.types import LongText
  
  
  def upgrade(migrate_engine):
      meta = sqlalchemy.MetaData(bind=migrate_engine)
      software_config = sqlalchemy.Table('software_config', meta, autoload=True)
      software_config.c.config.alter(type=Json)
      software_config.c.io.drop()
  
  
  def downgrade(migrate_engine):
      meta = sqlalchemy.MetaData(bind=migrate_engine)
      software_config = sqlalchemy.Table('software_config', meta, autoload=True)
      software_config.c.config.alter(type=LongText)
  
      io = sqlalchemy.Column('io', Json)
      io.create(software_config)
  