neutron/neutron/db/models/subnet_service_type.py

44 lines
1.7 KiB
Python

# Copyright 2016 Hewlett Packard Enterprise Development Company, LP
# All Rights Reserved.
#
# 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 neutron_lib.db import constants as db_const
from neutron_lib.db import model_base
import sqlalchemy as sa
from sqlalchemy import orm
from neutron.db import models_v2
class SubnetServiceType(model_base.BASEV2):
"""Subnet Service Types table"""
__tablename__ = "subnet_service_types"
subnet_id = sa.Column(sa.String(36),
sa.ForeignKey('subnets.id', ondelete="CASCADE"))
# Service types must be valid device owners, therefore share max length
service_type = sa.Column(sa.String(
length=db_const.DEVICE_OWNER_FIELD_SIZE))
subnet = orm.relationship(models_v2.Subnet, load_on_pending=True,
backref=orm.backref('service_types',
lazy='subquery',
cascade='all, delete-orphan',
uselist=True))
__table_args__ = (
sa.PrimaryKeyConstraint('subnet_id', 'service_type'),
model_base.BASEV2.__table_args__
)
revises_on_change = ('subnet', )