39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
# Copyright (c) 2013 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron_lib.db import model_base
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import sqlalchemy as sa
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from sqlalchemy import orm
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from sqlalchemy import sql
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from neutron.db import models_v2
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class ExternalNetwork(model_base.BASEV2):
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network_id = sa.Column(sa.String(36),
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sa.ForeignKey('networks.id', ondelete="CASCADE"),
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primary_key=True)
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# introduced by auto-allocated-topology extension
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is_default = sa.Column(sa.Boolean(), nullable=False,
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server_default=sql.false())
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# Add a relationship to the Network model in order to instruct
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# SQLAlchemy to eagerly load this association
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network = orm.relationship(
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models_v2.Network, load_on_pending=True,
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backref=orm.backref("external", lazy='joined',
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uselist=False, cascade='delete'))
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revises_on_change = ('network', )
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