77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 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.from sqlalchemy import *
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from sqlalchemy import Column, Integer, MetaData, Table
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meta = MetaData()
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#
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# Tables to alter
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#
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#
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old_flavor_id = Column('old_flavor_id', Integer())
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new_flavor_id = Column('new_flavor_id', Integer())
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old_instance_type_id = Column('old_instance_type_id', Integer())
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new_instance_type_id = Column('new_instance_type_id', Integer())
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def upgrade(migrate_engine):
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meta.bind = migrate_engine
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instance_types = Table('instance_types', meta, autoload=True)
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migrations = Table('migrations', meta, autoload=True)
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migrations.create_column(old_instance_type_id)
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migrations.create_column(new_instance_type_id)
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# Convert flavor_id to instance_type_id
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itypes = {}
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for instance_type in migrate_engine.execute(instance_types.select()):
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itypes[instance_type.id] = instance_type.flavorid
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for instance_type_id in itypes.keys():
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migrate_engine.execute(migrations.update()\
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.where(migrations.c.old_flavor_id == itypes[instance_type_id])\
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.values(old_instance_type_id=instance_type_id))
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migrate_engine.execute(migrations.update()\
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.where(migrations.c.new_flavor_id == itypes[instance_type_id])\
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.values(new_instance_type_id=instance_type_id))
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migrations.c.old_flavor_id.drop()
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migrations.c.new_flavor_id.drop()
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def downgrade(migrate_engine):
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meta.bind = migrate_engine
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instance_types = Table('instance_types', meta, autoload=True)
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migrations = Table('migrations', meta, autoload=True)
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migrations.create_column(old_flavor_id)
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migrations.create_column(new_flavor_id)
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# Convert instance_type_id to flavor_id
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for instance_type in migrate_engine.execute(instance_types.select()):
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migrate_engine.execute(migrations.update()\
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.where(migrations.c.old_instance_type_id == instance_type.id)\
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.values(old_flavor_id=instance_type.flavorid))
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migrate_engine.execute(migrations.update()\
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.where(migrations.c.new_instance_type_id == instance_type.id)\
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.values(new_flavor_id=instance_type.flavorid))
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migrations.c.old_instance_type_id.drop()
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migrations.c.new_instance_type_id.drop()
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