octavia/octavia/db/migration/alembic_migrations/versions/392fb85b4419_add_primary_ke...

48 lines
1.5 KiB
Python

# Copyright 2016 Rackspace
#
# 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 primary key to spares_pool
Revision ID: 392fb85b4419
Revises: 46d914b2a5e5
Create Date: 2019-04-30 09:58:54.159823
"""
from alembic import op
from sqlalchemy.engine import reflection
from oslo_log import log as logging
# revision identifiers, used by Alembic.
revision = '392fb85b4419'
down_revision = '46d914b2a5e5'
LOG = logging.getLogger(__name__)
def upgrade():
bind = op.get_bind()
inspector = reflection.Inspector.from_engine(bind.engine)
pk = inspector.get_pk_constraint('spares_pool')
if not pk['constrained_columns']:
op.create_primary_key(
u'pk_spares_pool', u'spares_pool', [u'updated_at'])
else:
# Revision '46d914b2a5e5' has been updated to create the
# missing PK. Depending whether the env is already deployed or
# not we may or not have to add the primary key.
LOG.info("The primary key in spares_pool already exists, continuing.")