53 lines
2.0 KiB
Python
53 lines
2.0 KiB
Python
# Copyright 2014 IBM Corp.
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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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import sqlalchemy
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from glance.db.sqlalchemy.migrate_repo import schema
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def upgrade(migrate_engine):
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meta = sqlalchemy.schema.MetaData()
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meta.bind = migrate_engine
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images_table = sqlalchemy.Table('images', meta, autoload=True)
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image_locations_table = sqlalchemy.Table('image_locations', meta,
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autoload=True)
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# Create 'status' column for image_locations table
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status = sqlalchemy.Column('status', schema.String(30),
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server_default='active', nullable=False)
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status.create(image_locations_table)
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# Set 'status' column initial value for image_locations table
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mapping = {'active': 'active', 'pending_delete': 'pending_delete',
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'deleted': 'deleted', 'killed': 'deleted'}
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for src, dst in mapping.iteritems():
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subq = sqlalchemy.sql.select([images_table.c.id])\
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.where(images_table.c.status == src)
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image_locations_table.update(values={'status': dst})\
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.where(image_locations_table.c.image_id.in_(subq))\
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.execute()
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def downgrade(migrate_engine):
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meta = sqlalchemy.schema.MetaData()
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meta.bind = migrate_engine
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image_locations_table = sqlalchemy.Table('image_locations', meta,
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autoload=True)
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# Remove 'status' column from image_locations table
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image_locations_table.columns['status'].drop()
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