46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 MORITA Kazutaka.
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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 Column, Table, MetaData, Integer
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meta = MetaData()
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# Table stub-definitions
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# Just for the ForeignKey and column creation to succeed, these are not the
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# actual definitions of instances or services.
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#
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volumes = Table('volumes', meta,
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Column('id', Integer(), primary_key=True, nullable=False),
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)
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#
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# New Column
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#
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snapshot_id = Column('snapshot_id', Integer())
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def upgrade(migrate_engine):
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# Upgrade operations go here. Don't create your own engine;
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# bind migrate_engine to your metadata
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meta.bind = migrate_engine
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# Add columns to existing tables
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volumes.create_column(snapshot_id)
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