old_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  
  # Copyright 2011 OpenStack LLC.
  # 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 reddwarf.db.sqlalchemy.migrate_repo.schema import create_tables
  from reddwarf.db.sqlalchemy.migrate_repo.schema import DateTime
  from reddwarf.db.sqlalchemy.migrate_repo.schema import drop_tables
  from reddwarf.db.sqlalchemy.migrate_repo.schema import Integer
  from reddwarf.db.sqlalchemy.migrate_repo.schema import String
  from reddwarf.db.sqlalchemy.migrate_repo.schema import Table
  
  
  meta = MetaData()
  
  
  usage = Table('usage', meta,
      Column('id', String(36), primary_key=True, nullable=False),
      Column('instance_name', String(36)),
      Column('tenant_id', String(36)),
      Column('nova_instance_id', String(36)),
      Column('instance_size', Integer()),
      Column('nova_volume_id', String(36)),
      Column('volume_size', Integer()),
      Column('end_time', DateTime()),
      Column('updated', DateTime()))
  
  
  def upgrade(migrate_engine):
      meta.bind = migrate_engine
      create_tables([usage])
  
  
  def downgrade(migrate_engine):
      meta.bind = migrate_engine
      drop_tables([usage])
  
new_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  
  # Copyright 2011 OpenStack LLC.
  # 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 reddwarf.db.sqlalchemy.migrate_repo.schema import create_tables
  from reddwarf.db.sqlalchemy.migrate_repo.schema import DateTime
  from reddwarf.db.sqlalchemy.migrate_repo.schema import drop_tables
  from reddwarf.db.sqlalchemy.migrate_repo.schema import Integer
  from reddwarf.db.sqlalchemy.migrate_repo.schema import String
  from reddwarf.db.sqlalchemy.migrate_repo.schema import Table
  
  
  meta = MetaData()
  
  
  usage_events = Table('usage_events', meta,
      Column('id', String(36), primary_key=True, nullable=False),
      Column('instance_name', String(36)),
      Column('tenant_id', String(36)),
      Column('nova_instance_id', String(36)),
      Column('instance_size', Integer()),
      Column('nova_volume_id', String(36)),
      Column('volume_size', Integer()),
      Column('end_time', DateTime()),
      Column('updated', DateTime()))
  
  
  def upgrade(migrate_engine):
      meta.bind = migrate_engine
      create_tables([usage_events])
  
  
  def downgrade(migrate_engine):
      meta.bind = migrate_engine
      drop_tables([usage_events])
  
subject: change usage table to usage_events