tacker/tacker/db/migration/alembic_migrations/versions/e7993093baf1_add_unique_con...

48 lines
1.4 KiB
Python

# Copyright 2017 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.
#
"""add unique constraint on deleted_at
Revision ID: e7993093baf1
Revises: c256228ed37c
Create Date: 2017-04-19 10:57:22.157326
"""
# revision identifiers, used by Alembic.
revision = 'e7993093baf1'
down_revision = 'c256228ed37c'
from alembic import op
def _drop_unique_constraint(table):
op.drop_constraint(
constraint_name='uniq_%s0tenant_id0name' % table,
table_name=table, type_='unique')
def _add_unique_constraint(table):
op.create_unique_constraint(
constraint_name='uniq_%s0tenant_id0name0deleted_at' % table,
table_name=table,
columns=['tenant_id', 'name', 'deleted_at'])
def upgrade(active_plugins=None, options=None):
for table in ['vnf', 'vnfd', 'vims', 'ns', 'nsd']:
_drop_unique_constraint(table)
_add_unique_constraint(table)