148 lines
5.2 KiB
Python
148 lines
5.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from sqlalchemy import MetaData, select, Table
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from nova.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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def upgrade(migrate_engine):
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"""Convert volume and snapshot id columns from int to varchar."""
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meta = MetaData()
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meta.bind = migrate_engine
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volumes = Table('volumes', meta, autoload=True)
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snapshots = Table('snapshots', meta, autoload=True)
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iscsi_targets = Table('iscsi_targets', meta, autoload=True)
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volume_metadata = Table('volume_metadata', meta, autoload=True)
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block_device_mapping = Table('block_device_mapping', meta, autoload=True)
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sm_volumes = Table('sm_volume', meta, autoload=True)
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volume_mappings = Table('volume_id_mappings', meta, autoload=True)
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snapshot_mappings = Table('snapshot_id_mappings', meta, autoload=True)
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volume_list = list(volumes.select().execute())
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for v in volume_list:
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new_id = select([volume_mappings.c.uuid],
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volume_mappings.c.id == v['id'])
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volumes.update().\
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where(volumes.c.id == v['id']).\
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values(id=new_id).execute()
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sm_volumes.update().\
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where(sm_volumes.c.id == v['id']).\
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values(id=new_id).execute()
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snapshots.update().\
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where(snapshots.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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iscsi_targets.update().\
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where(iscsi_targets.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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volume_metadata.update().\
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where(volume_metadata.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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block_device_mapping.update().\
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where(block_device_mapping.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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snapshot_list = list(snapshots.select().execute())
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for s in snapshot_list:
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new_id = select([snapshot_mappings.c.uuid],
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volume_mappings.c.id == s['id'])
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volumes.update().\
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where(volumes.c.snapshot_id == s['id']).\
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values(snapshot_id=new_id).execute()
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snapshots.update().\
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where(snapshots.c.id == s['id']).\
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values(volume_id=new_id).execute()
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block_device_mapping.update().\
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where(block_device_mapping.c.snapshot_id == s['id']).\
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values(snapshot_id=new_id).execute()
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def downgrade(migrate_engine):
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"""Convert volume and snapshot id columns back to int."""
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meta = MetaData()
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meta.bind = migrate_engine
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volumes = Table('volumes', meta, autoload=True)
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snapshots = Table('snapshots', meta, autoload=True)
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iscsi_targets = Table('iscsi_targets', meta, autoload=True)
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volume_metadata = Table('volume_metadata', meta, autoload=True)
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block_device_mapping = Table('block_device_mapping', meta, autoload=True)
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sm_volumes = Table('sm_volume', meta, autoload=True)
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volume_mappings = Table('volume_id_mappings', meta, autoload=True)
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snapshot_mappings = Table('snapshot_id_mappings', meta, autoload=True)
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volume_list = list(volumes.select().execute())
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for v in volume_list:
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new_id = select([volume_mappings.c.id],
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volume_mappings.c.uuid == v['id'])
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volumes.update().\
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where(volumes.c.id == v['id']).\
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values(id=new_id).execute()
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sm_volumes.update().\
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where(sm_volumes.c.id == v['id']).\
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values(id=new_id).execute()
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snapshots.update().\
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where(snapshots.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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iscsi_targets.update().\
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where(iscsi_targets.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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volume_metadata.update().\
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where(volume_metadata.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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block_device_mapping.update().\
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where(block_device_mapping.c.volume_id == v['id']).\
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values(volume_id=new_id).execute()
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snapshot_list = list(snapshots.select().execute())
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for s in snapshot_list:
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new_id = select([snapshot_mappings.c.id],
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volume_mappings.c.uuid == s['id'])
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volumes.update().\
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where(volumes.c.snapshot_id == s['id']).\
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values(snapshot_id=new_id).execute()
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snapshots.update().\
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where(snapshots.c.id == s['id']).\
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values(volume_id=new_id).execute()
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block_device_mapping.update().\
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where(block_device_mapping.c.snapshot_id == s['id']).\
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values(snapshot_id=new_id).execute()
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