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# 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.
"""Add resource indexes
Revision ID: daa98075b90d
Revises: 9c74c1c6971f
Create Date: 2021-11-26 10:26:41.883072
"""
from alembic import op
from oslo_db.sqlalchemy import enginefacade
from oslo_db.sqlalchemy import utils
from oslo_log import log as logging
LOG = logging.getLogger(__name__)
# revision identifiers, used by Alembic.
revision = 'daa98075b90d'
down_revision = 'c92a3e68beed'
branch_labels = None
depends_on = None
INDEXES = (
('groups', 'groups_deleted_project_id_idx', ('deleted', 'project_id')),
('group_snapshots', 'group_snapshots_deleted_project_id_idx',
('deleted', 'project_id')),
('volumes', 'volumes_deleted_project_id_idx', ('deleted', 'project_id')),
('volumes', 'volumes_deleted_host_idx', ('deleted', 'host')),
('backups', 'backups_deleted_project_id_idx', ('deleted', 'project_id')),
('snapshots', 'snapshots_deleted_project_id_idx', ('deleted',
'project_id')),
)
def upgrade():
engine = enginefacade.reader.get_engine()
is_mysql = engine.dialect.name == 'mysql'
for table, idx_name, fields in INDEXES:
# Skip creation in mysql if it already has the index
if is_mysql and utils.index_exists(engine, table, idx_name):
LOG.info('Skipping index %s, already exists', idx_name)
else:
op.create_index(idx_name, table, fields)
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