neutron/neutron/db/migration/alembic_migrations/versions/yoga/expand/ba859d649675_add_indexes_to...

66 lines
1.8 KiB
Python

# Copyright 2021 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 alembic import op
import sqlalchemy as sa
"""Add indexes to RBACs
Revision ID: ba859d649675
Revises: c181bb1d89e4
Create Date: 2021-09-20 15:22:04.668376
"""
# revision identifiers, used by Alembic.
revision = 'ba859d649675'
down_revision = 'c181bb1d89e4'
OBJECTS = ('network', 'qospolicy', 'securitygroup', 'addressscope',
'subnetpool', 'addressgroup')
COLUMNS = ('target_tenant', 'action')
_INSPECTOR = None
def get_inspector():
global _INSPECTOR
if _INSPECTOR:
return _INSPECTOR
else:
_INSPECTOR = sa.inspect(op.get_bind())
return _INSPECTOR
def has_index(table, column):
"""Check if the table has an index *using only* the column name provided"""
inspector = get_inspector()
table_indexes = inspector.get_indexes(table)
for index in table_indexes:
if [column] == index['column_names']:
return True
return False
def upgrade():
for object in OBJECTS:
table = object + 'rbacs'
ix = 'ix_' + table + '_'
for column in COLUMNS:
if not has_index(table, column):
op.create_index(op.f(ix + column), table, [column],
unique=False)