/
018_add_qos_specs.py
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/
018_add_qos_specs.py
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2013 eBay Inc.
# Copyright (C) 2013 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from sqlalchemy import Boolean, Column, DateTime
from sqlalchemy import ForeignKey, MetaData, Integer, String, Table
from cinder.openstack.common import log as logging
LOG = logging.getLogger(__name__)
def upgrade(migrate_engine):
"""Add volume_type_rate_limit table."""
meta = MetaData()
meta.bind = migrate_engine
quality_of_service_specs = Table(
'quality_of_service_specs', meta,
Column('created_at', DateTime(timezone=False)),
Column('updated_at', DateTime(timezone=False)),
Column('deleted_at', DateTime(timezone=False)),
Column('deleted', Boolean(create_constraint=True, name=None)),
Column('id', String(36), primary_key=True, nullable=False),
Column('specs_id', String(36),
ForeignKey('quality_of_service_specs.id')),
Column('key', String(255)),
Column('value', String(255)),
mysql_engine='InnoDB',
mysql_charset='utf8'
)
try:
quality_of_service_specs.create()
except Exception:
LOG.error(_("Table quality_of_service_specs not created!"))
raise
volume_types = Table('volume_types', meta, autoload=True)
qos_specs_id = Column('qos_specs_id', String(36),
ForeignKey('quality_of_service_specs.id'))
try:
volume_types.create_column(qos_specs_id)
volume_types.update().values(qos_specs_id=None).execute()
except Exception:
LOG.error(_("Added qos_specs_id column to volume type table failed."))
raise
def downgrade(migrate_engine):
"""Remove volume_type_rate_limit table."""
meta = MetaData()
meta.bind = migrate_engine
qos_specs = Table('quality_of_service_specs', meta, autoload=True)
try:
qos_specs.drop()
except Exception:
LOG.error(_("Dropping quality_of_service_specs table failed."))
raise
volume_types = Table('volume_types', meta, autoload=True)
qos_specs_id = Column('qos_specs_id', String(36))
try:
volume_types.drop_column(qos_specs_id)
except Exception:
LOG.error(_("Dropping qos_specs_id column failed."))
raise