54 lines
1.9 KiB
Python
54 lines
1.9 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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class VlanAllocation(model_base.BASEV2):
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"""Represent allocation state of a vlan_id on a physical network.
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If allocated is False, the vlan_id on the physical_network is
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available for allocation to a tenant network. If allocated is
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True, the vlan_id on the physical_network is in use, either as a
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tenant or provider network.
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When an allocation is released, if the vlan_id for the
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physical_network is inside the pool described by
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VlanTypeDriver.network_vlan_ranges, then allocated is set to
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False. If it is outside the pool, the record is deleted.
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"""
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__tablename__ = 'ml2_vlan_allocations'
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__table_args__ = (
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sa.Index('ix_ml2_vlan_allocations_physical_network_allocated',
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'physical_network', 'allocated'),
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model_base.BASEV2.__table_args__,)
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physical_network = sa.Column(sa.String(64), nullable=False,
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primary_key=True)
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vlan_id = sa.Column(sa.Integer, nullable=False, primary_key=True,
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autoincrement=False)
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allocated = sa.Column(sa.Boolean, nullable=False)
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@classmethod
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def get_segmentation_id(cls):
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return cls.vlan_id
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@property
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def segmentation_id(self):
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return self.vlan_id
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@staticmethod
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def primary_keys():
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return {'vlan_id', 'physical_network'}
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