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  # Copyright 2011 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.
  
  from sqlalchemy import ForeignKey
  from sqlalchemy.schema import Column
  from sqlalchemy.schema import MetaData
  from sqlalchemy.schema import UniqueConstraint
  
  from trove.db.sqlalchemy.migrate_repo.schema import Table
  from trove.db.sqlalchemy.migrate_repo.schema import create_tables
  from trove.db.sqlalchemy.migrate_repo.schema import drop_tables
  from trove.db.sqlalchemy.migrate_repo.schema import String
  
  
  meta = MetaData()
  
  
  dns_records = Table(
      'dns_records', meta,
      Column('name', String(length=255), primary_key=True),
      Column('record_id', String(length=64)))
  
  
  def upgrade(migrate_engine):
      meta.bind = migrate_engine
      create_tables([dns_records])
  
  
  def downgrade(migrate_engine):
      meta.bind = migrate_engine
      drop_tables([dns_records])
  