77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
# Copyright (C) 2013 eBay Inc.
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# Copyright (C) 2013 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 sqlalchemy import Boolean, Column, DateTime
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from sqlalchemy import ForeignKey, MetaData, String, Table
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from migrate import ForeignKeyConstraint
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def upgrade(migrate_engine):
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"""Add volume_type_rate_limit table."""
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meta = MetaData()
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meta.bind = migrate_engine
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quality_of_service_specs = Table(
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'quality_of_service_specs', meta,
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Column('created_at', DateTime(timezone=False)),
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Column('updated_at', DateTime(timezone=False)),
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Column('deleted_at', DateTime(timezone=False)),
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Column('deleted', Boolean(create_constraint=True, name=None)),
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Column('id', String(36), primary_key=True, nullable=False),
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Column('specs_id', String(36),
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ForeignKey('quality_of_service_specs.id')),
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Column('key', String(255)),
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Column('value', String(255)),
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mysql_engine='InnoDB',
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mysql_charset='utf8'
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)
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quality_of_service_specs.create()
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volume_types = Table('volume_types', meta, autoload=True)
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qos_specs_id = Column('qos_specs_id', String(36),
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ForeignKey('quality_of_service_specs.id'))
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volume_types.create_column(qos_specs_id)
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volume_types.update().values(qos_specs_id=None).execute()
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def downgrade(migrate_engine):
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"""Remove volume_type_rate_limit table."""
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meta = MetaData()
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meta.bind = migrate_engine
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qos_specs = Table('quality_of_service_specs', meta, autoload=True)
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if migrate_engine.name == 'mysql':
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# NOTE(alanmeadows): MySQL Cannot drop column qos_specs_id
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# until the foreign key volumes_types_ibfk_1 is removed. We
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# remove the foreign key first, and then we drop the column.
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table = Table('volume_types', meta, autoload=True)
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ref_table = Table('volume_types', meta, autoload=True)
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params = {'columns': [table.c['qos_specs_id']],
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'refcolumns': [ref_table.c['id']],
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'name': 'volume_types_ibfk_1'}
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fkey = ForeignKeyConstraint(**params)
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fkey.drop()
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volume_types = Table('volume_types', meta, autoload=True)
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qos_specs_id = Column('qos_specs_id', String(36))
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volume_types.drop_column(qos_specs_id)
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qos_specs.drop()
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