neutron/neutron/db/migration/alembic_migrations/versions/ussuri/expand/Ibac91d24da2_port_forwardin...

78 lines
2.6 KiB
Python

# Copyright 2019 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.
#
import sqlalchemy as sa
from alembic import op
"""port forwarding rule description
Revision ID: Ibac91d24da2
Revises: 263d454a9655
Create Date: 2019-07-13 10:00:00.000000
"""
# revision identifiers, used by Alembic.
revision = 'Ibac91d24da2'
down_revision = '263d454a9655'
TABLE_NAME = 'portforwardings'
TABLE_MODEL = sa.Table(TABLE_NAME, sa.MetaData(),
sa.Column('id', sa.String(length=36), nullable=False),
sa.Column('standard_attr_id', sa.BigInteger(),
nullable=True))
STDATTRS_TABLE = sa.Table(
'standardattributes', sa.MetaData(),
sa.Column('id', sa.BigInteger(), primary_key=True, autoincrement=True),
sa.Column('resource_type', sa.String(length=255), nullable=False))
def update_existing_records():
session = sa.orm.Session(bind=op.get_bind())
with session.begin(subtransactions=True):
for row in session.query(TABLE_MODEL):
res = session.execute(
STDATTRS_TABLE.insert().values(resource_type=TABLE_NAME)
)
session.execute(
TABLE_MODEL.update().values(
standard_attr_id=res.inserted_primary_key[0]).where(
TABLE_MODEL.c.id == row[0])
)
session.commit()
def upgrade():
op.add_column(TABLE_NAME, sa.Column('standard_attr_id',
sa.BigInteger(),
nullable=True))
update_existing_records()
op.alter_column(TABLE_NAME, 'standard_attr_id', nullable=False,
existing_type=sa.BigInteger(), existing_nullable=True,
existing_server_default=False)
op.create_foreign_key(
constraint_name=None, source_table=TABLE_NAME,
referent_table='standardattributes',
local_cols=['standard_attr_id'], remote_cols=['id'],
ondelete='CASCADE')
op.create_unique_constraint(
constraint_name='uniq_%s0standard_attr_id' % TABLE_NAME,
table_name=TABLE_NAME, columns=['standard_attr_id'])