42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
# 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 neutron.db.models import agent as agent_model
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LOWEST_BINDING_INDEX = 1
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class RouterL3AgentBinding(model_base.BASEV2):
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"""Represents binding between neutron routers and L3 agents."""
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__table_args__ = (
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sa.UniqueConstraint(
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'router_id', 'binding_index',
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name='uniq_router_l3_agent_binding0router_id0binding_index0'),
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model_base.BASEV2.__table_args__
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)
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router_id = sa.Column(sa.String(36),
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sa.ForeignKey("routers.id", ondelete='CASCADE'),
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primary_key=True)
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l3_agent = orm.relation(agent_model.Agent)
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l3_agent_id = sa.Column(sa.String(36),
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sa.ForeignKey("agents.id", ondelete='CASCADE'),
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primary_key=True)
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binding_index = sa.Column(sa.Integer, nullable=False,
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server_default=str(LOWEST_BINDING_INDEX))
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