f28d3c4ce6
Fixes bug 1023167. The openswitch plugin's in-memory VlanMap is replaced with a vlan_ids DB table similar to that used by the linuxbridge plugin. This will prevent conflicting VLAN assignments if multiple server replicas are run, and also sets the stage for phase 2 of the provider-networks BP implementation that will add support for multiple physical networks. Unlike with the current linuxbridge plugin, the contents of the openvswitch plugin's vlan_ids table are properly updated at startup in case the vlan_min or vlan_max configuration variables have changed. A new test_ovs_db test case has been added. The primary key of the vlan_bindings table is changed from the vlan_id to the network_id, which is now a foreign key, and network deletion is now properly handled. The net_id has been removed from the VlanIdInUse exception, requiring a minor update to the linuxbridge plugin. The new NoNetworksAvailable exception, with ResourceExhausted as its base class, is returned when no more VLANs are available. Change-Id: I65a2347dea5366cc0d15d98a88f40e42e1a45f4c
68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Nicira Networks, 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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# @author: Aaron Rosen, Nicira Networks, Inc.
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# @author: Bob Kukura, Red Hat, Inc.
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from sqlalchemy import Boolean, Column, ForeignKey, Integer, String
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from quantum.db.models_v2 import model_base
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class VlanID(model_base.BASEV2):
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"""Represents a vlan_id usage"""
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__tablename__ = 'vlan_ids'
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vlan_id = Column(Integer, nullable=False, primary_key=True)
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vlan_used = Column(Boolean, nullable=False)
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def __init__(self, vlan_id):
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self.vlan_id = vlan_id
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self.vlan_used = False
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def __repr__(self):
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return "<VlanID(%d,%s)>" % (self.vlan_id, self.vlan_used)
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class VlanBinding(model_base.BASEV2):
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"""Represents a binding of network_id to vlan_id."""
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__tablename__ = 'vlan_bindings'
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network_id = Column(String(36), ForeignKey('networks.id',
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ondelete="CASCADE"),
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primary_key=True)
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vlan_id = Column(Integer, nullable=False)
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def __init__(self, vlan_id, network_id):
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self.network_id = network_id
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self.vlan_id = vlan_id
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def __repr__(self):
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return "<VlanBinding(%s,%s)>" % (self.vlan_id, self.network_id)
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class TunnelIP(model_base.BASEV2):
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"""Represents a remote IP in tunnel mode."""
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__tablename__ = 'tunnel_ips'
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ip_address = Column(String(255), primary_key=True)
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def __init__(self, ip_address):
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self.ip_address = ip_address
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def __repr__(self):
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return "<TunnelIP(%s)>" % (self.ip_address)
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