59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack LLC.
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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, BigInteger
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from sqlalchemy import MetaData, Integer, String, Table
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from nova.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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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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# add column:
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bw_usage_cache = Table('bw_usage_cache', meta, autoload=True)
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uuid = Column('uuid', String(36))
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# clear the cache to get rid of entries with no uuid
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migrate_engine.execute(bw_usage_cache.delete())
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bw_usage_cache.create_column(uuid)
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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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# drop column:
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bw_usage_cache = Table('bw_usage_cache', 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', Integer(), primary_key=True, nullable=False),
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Column('mac', String(255)),
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Column('uuid', String(36)),
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Column('start_period', DateTime(timezone=False), nullable=False),
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Column('last_refreshed', DateTime(timezone=False)),
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Column('bw_in', BigInteger()),
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Column('bw_out', BigInteger()),
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useexisting=True)
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bw_usage_cache.drop_column('uuid')
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