nova/nova/db/sqlalchemy/migrate_repo/versions/302_pgsql_add_instance_syst...

37 lines
1.3 KiB
Python

# Copyright 2015 Huawei.
# 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 oslo_db.sqlalchemy import utils
INDEX_COLUMNS = ['instance_uuid']
# using the index name same with mysql
INDEX_NAME = 'instance_uuid'
SYS_META_TABLE_NAME = 'instance_system_metadata'
def upgrade(migrate_engine):
"""Add instance_system_metadata indexes missing on PostgreSQL and other DB.
"""
# This index was already added by migration 216 for MySQL
if migrate_engine.name != 'mysql':
# Adds index for PostgreSQL and other DB
if not utils.index_exists(migrate_engine, SYS_META_TABLE_NAME,
INDEX_NAME):
utils.add_index(migrate_engine, SYS_META_TABLE_NAME, INDEX_NAME,
INDEX_COLUMNS)