From c836d87000d70ceb2e652eb6a4fec35e34bc9a02 Mon Sep 17 00:00:00 2001 From: Dan Prince Date: Mon, 19 Nov 2012 16:12:46 -0500 Subject: Adds missing index migrations by instance/status. Adds an index for use with the migration_get_by_instance_and_status SQL API call. Change-Id: If2a0e8e141545aef015338b8933290c265a485d0 --- .../142_add_migrations_instance_status_index.py | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 nova/db/sqlalchemy/migrate_repo/versions/142_add_migrations_instance_status_index.py diff --git a/nova/db/sqlalchemy/migrate_repo/versions/142_add_migrations_instance_status_index.py b/nova/db/sqlalchemy/migrate_repo/versions/142_add_migrations_instance_status_index.py new file mode 100644 index 000000000..7aa358a25 --- /dev/null +++ b/nova/db/sqlalchemy/migrate_repo/versions/142_add_migrations_instance_status_index.py @@ -0,0 +1,40 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2012 Red Hat, Inc. +# 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 Index, MetaData, Table + + +def upgrade(migrate_engine): + meta = MetaData() + meta.bind = migrate_engine + + # Based on migration_get_by_instance_and_status + # from: nova/db/sqlalchemy/api.py + t = Table('migrations', meta, autoload=True) + i = Index('migrations_instance_uuid_and_status_idx', t.c.deleted, + t.c.instance_uuid, t.c.status) + i.create(migrate_engine) + + +def downgrade(migrate_engine): + meta = MetaData() + meta.bind = migrate_engine + + t = Table('migrations', meta, autoload=True) + i = Index('migrations_instance_uuid_and_status_idx', t.c.deleted, + t.c.instance_uuid, t.c.status) + i.drop(migrate_engine) -- cgit