nova/nova/db/sqlalchemy/migrate_repo/versions/091_convert_volume_ids_to_u...

148 lines
5.2 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 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 MetaData, select, Table
from nova.openstack.common import log as logging
LOG = logging.getLogger(__name__)
def upgrade(migrate_engine):
"""Convert volume and snapshot id columns from int to varchar."""
meta = MetaData()
meta.bind = migrate_engine
volumes = Table('volumes', meta, autoload=True)
snapshots = Table('snapshots', meta, autoload=True)
iscsi_targets = Table('iscsi_targets', meta, autoload=True)
volume_metadata = Table('volume_metadata', meta, autoload=True)
block_device_mapping = Table('block_device_mapping', meta, autoload=True)
sm_volumes = Table('sm_volume', meta, autoload=True)
volume_mappings = Table('volume_id_mappings', meta, autoload=True)
snapshot_mappings = Table('snapshot_id_mappings', meta, autoload=True)
volume_list = list(volumes.select().execute())
for v in volume_list:
new_id = select([volume_mappings.c.uuid],
volume_mappings.c.id == v['id'])
volumes.update().\
where(volumes.c.id == v['id']).\
values(id=new_id).execute()
sm_volumes.update().\
where(sm_volumes.c.id == v['id']).\
values(id=new_id).execute()
snapshots.update().\
where(snapshots.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
iscsi_targets.update().\
where(iscsi_targets.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
volume_metadata.update().\
where(volume_metadata.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
block_device_mapping.update().\
where(block_device_mapping.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
snapshot_list = list(snapshots.select().execute())
for s in snapshot_list:
new_id = select([snapshot_mappings.c.uuid],
volume_mappings.c.id == s['id'])
volumes.update().\
where(volumes.c.snapshot_id == s['id']).\
values(snapshot_id=new_id).execute()
snapshots.update().\
where(snapshots.c.id == s['id']).\
values(volume_id=new_id).execute()
block_device_mapping.update().\
where(block_device_mapping.c.snapshot_id == s['id']).\
values(snapshot_id=new_id).execute()
def downgrade(migrate_engine):
"""Convert volume and snapshot id columns back to int."""
meta = MetaData()
meta.bind = migrate_engine
volumes = Table('volumes', meta, autoload=True)
snapshots = Table('snapshots', meta, autoload=True)
iscsi_targets = Table('iscsi_targets', meta, autoload=True)
volume_metadata = Table('volume_metadata', meta, autoload=True)
block_device_mapping = Table('block_device_mapping', meta, autoload=True)
sm_volumes = Table('sm_volume', meta, autoload=True)
volume_mappings = Table('volume_id_mappings', meta, autoload=True)
snapshot_mappings = Table('snapshot_id_mappings', meta, autoload=True)
volume_list = list(volumes.select().execute())
for v in volume_list:
new_id = select([volume_mappings.c.id],
volume_mappings.c.uuid == v['id'])
volumes.update().\
where(volumes.c.id == v['id']).\
values(id=new_id).execute()
sm_volumes.update().\
where(sm_volumes.c.id == v['id']).\
values(id=new_id).execute()
snapshots.update().\
where(snapshots.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
iscsi_targets.update().\
where(iscsi_targets.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
volume_metadata.update().\
where(volume_metadata.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
block_device_mapping.update().\
where(block_device_mapping.c.volume_id == v['id']).\
values(volume_id=new_id).execute()
snapshot_list = list(snapshots.select().execute())
for s in snapshot_list:
new_id = select([snapshot_mappings.c.id],
volume_mappings.c.uuid == s['id'])
volumes.update().\
where(volumes.c.snapshot_id == s['id']).\
values(snapshot_id=new_id).execute()
snapshots.update().\
where(snapshots.c.id == s['id']).\
values(volume_id=new_id).execute()
block_device_mapping.update().\
where(block_device_mapping.c.snapshot_id == s['id']).\
values(snapshot_id=new_id).execute()