94 lines
3.5 KiB
Python
94 lines
3.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# 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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#
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# @author: Bob Melander, Cisco Systems, Inc.
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from oslo.config import cfg
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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from neutron.common import constants as q_const
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from neutron.common import rpc as q_rpc
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from neutron.common import topics
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from neutron.db import api as qdbapi
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from neutron.db import db_base_plugin_v2
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from neutron.db import extraroute_db
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from neutron.db import l3_agentschedulers_db
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from neutron.db import l3_gwmode_db
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from neutron.db import l3_rpc_base
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from neutron.db import model_base
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from neutron.openstack.common import importutils
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from neutron.openstack.common import rpc
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from neutron.plugins.common import constants
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class L3RouterPluginRpcCallbacks(l3_rpc_base.L3RpcCallbackMixin):
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# Set RPC API version to 1.0 by default.
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RPC_API_VERSION = '1.0'
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def create_rpc_dispatcher(self):
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"""Get the rpc dispatcher for this manager.
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If a manager would like to set an rpc API version, or support more than
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one class as the target of rpc messages, override this method.
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"""
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return q_rpc.PluginRpcDispatcher([self])
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class L3RouterPlugin(db_base_plugin_v2.CommonDbMixin,
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extraroute_db.ExtraRoute_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin,
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l3_agentschedulers_db.L3AgentSchedulerDbMixin):
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"""Implementation of the Neutron L3 Router Service Plugin.
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This class implements a L3 service plugin that provides
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router and floatingip resources and manages associated
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request/response.
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All DB related work is implemented in classes
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l3_db.L3_NAT_db_mixin and extraroute_db.ExtraRoute_db_mixin.
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"""
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supported_extension_aliases = ["router", "ext-gw-mode",
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"extraroute", "l3_agent_scheduler"]
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def __init__(self):
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qdbapi.register_models(base=model_base.BASEV2)
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self.setup_rpc()
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self.router_scheduler = importutils.import_object(
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cfg.CONF.router_scheduler_driver)
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def setup_rpc(self):
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# RPC support
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self.topic = topics.L3PLUGIN
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self.conn = rpc.create_connection(new=True)
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self.agent_notifiers.update(
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{q_const.AGENT_TYPE_L3: l3_rpc_agent_api.L3AgentNotify})
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self.callbacks = L3RouterPluginRpcCallbacks()
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self.dispatcher = self.callbacks.create_rpc_dispatcher()
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self.conn.create_consumer(self.topic, self.dispatcher,
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fanout=False)
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self.conn.consume_in_thread()
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def get_plugin_type(self):
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return constants.L3_ROUTER_NAT
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def get_plugin_description(self):
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"""returns string description of the plugin."""
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return ("L3 Router Service Plugin for basic L3 forwarding"
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" between (L2) Neutron networks and access to external"
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" networks via a NAT gateway.")
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