0684f0c22c
RPC has a version of itself. In Neutron a plugin implements several RPC interface, so a single RPC version doesn't work. In Mixin callback class approach, RPC versioning depends on each plugin implementation and it makes harder to maintain RPC version appropriately. This patch series replaces mixin RPC callback of server side with a separate class. This commit handles server-side callback of L3-agent RPC interface. L3-agent server-side callback class is moved from db/ to api/rpc/handlers because it doesn't involve any db operations and defining all RPC interfaces in a single place sounds reasonable. Note that moving other L3-agent related RPC interface class to api/rpc/handlers will be done in a separate patch as this patch focuses on reorganizing the server-side RPC callback class. Partial-Bug: #1359416 Change-Id: Ie3f2c9b2ad907a1110e05fe94d42e41e93fbcaa7
92 lines
3.5 KiB
Python
92 lines
3.5 KiB
Python
# 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.api.rpc.handlers import l3_rpc
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from neutron.common import constants as q_const
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from neutron.common import rpc as n_rpc
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from neutron.common import topics
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from neutron.db import common_db_mixin
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from neutron.db import extraroute_db
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from neutron.db import l3_dvr_db
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from neutron.db import l3_dvrscheduler_db
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from neutron.db import l3_gwmode_db
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from neutron.openstack.common import importutils
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from neutron.plugins.common import constants
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class L3RouterPlugin(common_db_mixin.CommonDbMixin,
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extraroute_db.ExtraRoute_db_mixin,
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l3_dvr_db.L3_NAT_with_dvr_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin,
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l3_dvrscheduler_db.L3_DVRsch_db_mixin):
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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, l3_dvr_db.L3_NAT_with_dvr_db_mixin, and
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extraroute_db.ExtraRoute_db_mixin.
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"""
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supported_extension_aliases = ["dvr", "router", "ext-gw-mode",
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"extraroute", "l3_agent_scheduler"]
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def __init__(self):
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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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self.start_periodic_agent_status_check()
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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 = n_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.L3AgentNotifyAPI()})
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self.endpoints = [l3_rpc.L3RpcCallback()]
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self.conn.create_consumer(self.topic, self.endpoints,
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fanout=False)
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self.conn.consume_in_threads()
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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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def create_floatingip(self, context, floatingip):
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"""Create floating IP.
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:param context: Neutron request context
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:param floatingip: data for the floating IP being created
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:returns: A floating IP object on success
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As the l3 router plugin asynchronously creates floating IPs
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leveraging the l3 agent, the initial status for the floating
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IP object will be DOWN.
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"""
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return super(L3RouterPlugin, self).create_floatingip(
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context, floatingip,
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initial_status=q_const.FLOATINGIP_STATUS_DOWN)
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