55 lines
2.2 KiB
Python
55 lines
2.2 KiB
Python
# Copyright 2012 OpenStack Foundation
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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 String, Column, MetaData, Table, delete, select
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def upgrade(migrate_engine):
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meta = MetaData()
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meta.bind = migrate_engine
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aggregates = Table('aggregates', meta, autoload=True)
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aggregate_metadata = Table('aggregate_metadata', meta, autoload=True)
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# migrate data
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record_list = list(aggregates.select().execute())
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for rec in record_list:
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row = aggregate_metadata.insert()
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row.execute({'created_at': rec['created_at'],
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'updated_at': rec['updated_at'],
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'deleted_at': rec['deleted_at'],
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'deleted': rec['deleted'],
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'key': 'availability_zone',
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'value': rec['availability_zone'],
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'aggregate_id': rec['id'],
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})
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aggregates.drop_column('availability_zone')
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def downgrade(migrate_engine):
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meta = MetaData()
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meta.bind = migrate_engine
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aggregates = Table('aggregates', meta, autoload=True)
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aggregate_metadata = Table('aggregate_metadata', meta, autoload=True)
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availability_zone = Column('availability_zone', String(255))
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aggregates.create_column(availability_zone)
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# migrate data
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aggregates.update().values(availability_zone=select(
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[aggregate_metadata.c.value]).where(aggregates.c.id ==
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aggregate_metadata.c.aggregate_id).where(aggregate_metadata.c.key ==
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'availability_zone')).execute()
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delete(aggregate_metadata,
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aggregate_metadata.c.key == 'availability_zone').execute()
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aggregates.c.availability_zone.alter(nullable=False)
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