127 lines
4.9 KiB
Python
127 lines
4.9 KiB
Python
# Copyright 2011 OpenStack Foundation
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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 migrate.changeset import * # noqa
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from sqlalchemy import * # noqa
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from glance.db.sqlalchemy.migrate_repo.schema import (
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Boolean, DateTime, Integer, String, Text, from_migration_import)
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def get_images_table(meta):
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"""
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No changes to the image properties table from 002...
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"""
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(get_images_table,) = from_migration_import(
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'004_add_checksum', ['get_images_table'])
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images = get_images_table(meta)
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return images
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def get_image_properties_table(meta):
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"""
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Returns the Table object for the image_properties table that
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corresponds to the image_properties table definition of this version.
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"""
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(get_images_table,) = from_migration_import(
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'004_add_checksum', ['get_images_table'])
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images = get_images_table(meta)
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image_properties = Table('image_properties',
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meta,
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Column('id',
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Integer(),
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primary_key=True,
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nullable=False),
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Column('image_id',
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Integer(),
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ForeignKey('images.id'),
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nullable=False,
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index=True),
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Column('name', String(255), nullable=False),
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Column('value', Text()),
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Column('created_at', DateTime(), nullable=False),
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Column('updated_at', DateTime()),
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Column('deleted_at', DateTime()),
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Column('deleted',
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Boolean(),
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nullable=False,
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default=False,
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index=True),
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UniqueConstraint('image_id', 'name'),
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mysql_engine='InnoDB',
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extend_existing=True)
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return image_properties
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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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(get_image_properties_table,) = from_migration_import(
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'004_add_checksum', ['get_image_properties_table'])
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image_properties = get_image_properties_table(meta)
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if migrate_engine.name == "ibm_db_sa":
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# NOTE(dperaza) ibm db2 does not allow ALTER INDEX so we will drop
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# the index, rename the column, then re-create the index
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sql_commands = [
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"""ALTER TABLE image_properties DROP UNIQUE
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ix_image_properties_image_id_key;""",
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"""ALTER TABLE image_properties RENAME COLUMN \"key\" to name;""",
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"""ALTER TABLE image_properties ADD CONSTRAINT
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ix_image_properties_image_id_name UNIQUE(image_id, name);""",
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]
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for command in sql_commands:
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meta.bind.execute(command)
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else:
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index = Index('ix_image_properties_image_id_key',
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image_properties.c.image_id,
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image_properties.c.key)
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index.rename('ix_image_properties_image_id_name')
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image_properties = get_image_properties_table(meta)
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image_properties.columns['key'].alter(name="name")
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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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image_properties = get_image_properties_table(meta)
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if migrate_engine.name == "ibm_db_sa":
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# NOTE(dperaza) ibm db2 does not allow ALTER INDEX so we will drop
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# the index, rename the column, then re-create the index
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sql_commands = [
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"""ALTER TABLE image_properties DROP UNIQUE
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ix_image_properties_image_id_name;""",
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"""ALTER TABLE image_properties RENAME COLUMN name to \"key\";""",
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"""ALTER TABLE image_properties ADD CONSTRAINT
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ix_image_properties_image_id_key UNIQUE(image_id, \"key\");""",
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]
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for command in sql_commands:
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meta.bind.execute(command)
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else:
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index = Index('ix_image_properties_image_id_name',
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image_properties.c.image_id,
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image_properties.c.name)
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index.rename('ix_image_properties_image_id_key')
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image_properties.columns['name'].alter(name="key")
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