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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 SINA Corp.
# 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 nova.openstack.common import log as logging
from sqlalchemy import Boolean, Column, DateTime, Integer
from sqlalchemy import MetaData, String, Table
LOG = logging.getLogger(__name__)
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
# create new table
instance_id_mappings = Table('instance_id_mappings', meta,
Column('created_at', DateTime(timezone=False)),
Column('updated_at', DateTime(timezone=False)),
Column('deleted_at', DateTime(timezone=False)),
Column('deleted',
Boolean(create_constraint=True, name=None)),
Column('id', Integer(),
primary_key=True,
nullable=False,
autoincrement=True),
Column('uuid', String(36), index=True, nullable=False))
try:
instance_id_mappings.create()
except Exception:
LOG.exception("Exception while creating table 'instance_id_mappings'")
meta.drop_all(tables=[instance_id_mappings])
raise
if migrate_engine.name == "mysql":
migrate_engine.execute("ALTER TABLE instance_id_mappings "
"Engine=InnoDB")
instances = Table('instances', meta, autoload=True)
instance_id_mappings = Table('instance_id_mappings', meta, autoload=True)
instance_list = list(instances.select().execute())
for instance in instance_list:
instance_id = instance['id']
uuid = instance['uuid']
row = instance_id_mappings.insert()
row.execute({'id': instance_id, 'uuid': uuid})
def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
instance_id_mappings = Table('instance_id_mappings', meta, autoload=True)
instance_id_mappings.drop()
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