nova/nova/db/sqlalchemy/migrate_repo/versions/134_add_counters_to_bw_usag...

57 lines
2.1 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack Foundation
#
# 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, BigInteger
from sqlalchemy import MetaData, Integer, String, Table
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
# add column:
bw_usage_cache = Table('bw_usage_cache', meta, autoload=True)
last_ctr_in = Column('last_ctr_in', BigInteger())
last_ctr_out = Column('last_ctr_out', BigInteger())
bw_usage_cache.create_column(last_ctr_in)
bw_usage_cache.create_column(last_ctr_out)
def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
# drop column:
bw_usage_cache = Table('bw_usage_cache', 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', Integer(), primary_key=True, nullable=False),
Column('mac', String(255)),
Column('uuid', String(36)),
Column('start_period', DateTime(timezone=False), nullable=False),
Column('last_refreshed', DateTime(timezone=False)),
Column('bw_in', BigInteger()),
Column('bw_out', BigInteger()),
Column('last_ctr_in', BigInteger()),
Column('last_ctr_out', BigInteger()),
extend_existing=True)
bw_usage_cache.drop_column('last_ctr_in')
bw_usage_cache.drop_column('last_ctr_out')