74 lines
2.7 KiB
Python
74 lines
2.7 KiB
Python
# Copyright 2016 Red Hat Inc.
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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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import sqlalchemy as sa
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from neutron.db import model_base
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from neutron.db import models_v2
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class Trunk(model_base.HasStandardAttributes, model_base.BASEV2,
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model_base.HasId, model_base.HasTenant):
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port_id = sa.Column(sa.String(36),
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sa.ForeignKey('ports.id',
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ondelete='CASCADE'),
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nullable=False,
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unique=True)
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port = sa.orm.relationship(
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models_v2.Port,
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backref=sa.orm.backref('trunk_port', lazy='joined', uselist=False,
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cascade='delete'))
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class SubPort(model_base.BASEV2):
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port_id = sa.Column(sa.String(36),
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sa.ForeignKey('ports.id',
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ondelete='CASCADE'),
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nullable=False,
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unique=True,
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primary_key=True)
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port = sa.orm.relationship(
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models_v2.Port,
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backref=sa.orm.backref('sub_port', lazy='joined', uselist=False,
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cascade='delete'))
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trunk_id = sa.Column(sa.String(36),
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sa.ForeignKey('trunks.id',
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ondelete='CASCADE'),
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nullable=False,
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primary_key=True)
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segmentation_type = sa.Column(sa.String(32), nullable=False)
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segmentation_id = sa.Column(sa.Integer, nullable=False)
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__table_args__ = (
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sa.UniqueConstraint(
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'trunk_id',
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'segmentation_type',
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'segmentation_id',
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name='uniq_subport0trunk_id0segmentation_type0segmentation_id'),
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model_base.BASEV2.__table_args__
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)
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# NOTE(armax) constraints like the following are implemented via
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# business logic rules:
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#
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# Deletion of a trunk automatically deletes all of its subports;
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# Deletion of a (child) port referred by a subport is forbidden;
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# Deletion of a (parent) port referred by a trunk is forbidden;
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# A port cannot be a subport and a trunk port at the same time (nested).
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