nova/nova/db/sqlalchemy/migrate_repo/versions/331_add_tag_to_vifs_and_bdm.py

48 lines
1.6 KiB
Python

# Copyright (C) 2016, Red Hat, 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.
from oslo_db.sqlalchemy import utils
from sqlalchemy import Column
from sqlalchemy import MetaData
from sqlalchemy import String
from nova.db.sqlalchemy import api
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
shadow_prefix = api._SHADOW_TABLE_PREFIX
tag = Column('tag', String(255))
vifs = utils.get_table(migrate_engine, 'virtual_interfaces')
if not hasattr(vifs.c, 'tag'):
vifs.create_column(tag.copy())
shadow_vifs = utils.get_table(migrate_engine,
'%svirtual_interfaces' % shadow_prefix)
if not hasattr(shadow_vifs.c, 'tag'):
shadow_vifs.create_column(tag.copy())
bdm = utils.get_table(migrate_engine, 'block_device_mapping')
if not hasattr(bdm.c, 'tag'):
bdm.create_column(tag.copy())
shadow_bdm = utils.get_table(migrate_engine,
'%sblock_device_mapping' % shadow_prefix)
if not hasattr(shadow_bdm.c, 'tag'):
shadow_bdm.create_column(tag.copy())