text: #    Copyright 2016 Hewlett Packard Enterprise Development Company LP
  #
  #    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 Column
  from sqlalchemy import MetaData
  from sqlalchemy import String
  from sqlalchemy import Table
  
  
  def upgrade(migrate_engine):
      meta = MetaData()
      meta.bind = migrate_engine
  
      table = Table('console_auth_tokens', meta, autoload=True)
      new_column = Column('access_url_base', String(255), nullable=True)
      if not hasattr(table.c, 'access_url_base'):
          table.create_column(new_column)
  