122 lines
5.2 KiB
Python
122 lines
5.2 KiB
Python
# Copyright (c) 2013 OpenStack Foundation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from neutron.common import constants
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from neutron.common import rpc_compat
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from neutron.common import topics
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from neutron.common import utils
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from neutron import manager
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from neutron.openstack.common import log as logging
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from neutron.plugins.common import constants as service_constants
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LOG = logging.getLogger(__name__)
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class L3AgentNotifyAPI(rpc_compat.RpcProxy):
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"""API for plugin to notify L3 agent."""
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self, topic=topics.L3_AGENT):
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super(L3AgentNotifyAPI, self).__init__(
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topic=topic, default_version=self.BASE_RPC_API_VERSION)
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def _notification_host(self, context, method, payload, host):
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"""Notify the agent that is hosting the router."""
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LOG.debug(_('Nofity agent at %(host)s the message '
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'%(method)s'), {'host': host,
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'method': method})
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self.cast(
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context, self.make_msg(method,
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payload=payload),
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topic='%s.%s' % (topics.L3_AGENT, host))
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def _agent_notification(self, context, method, router_ids,
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operation, data):
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"""Notify changed routers to hosting l3 agents."""
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adminContext = context.is_admin and context or context.elevated()
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plugin = manager.NeutronManager.get_service_plugins().get(
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service_constants.L3_ROUTER_NAT)
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for router_id in router_ids:
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l3_agents = plugin.get_l3_agents_hosting_routers(
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adminContext, [router_id],
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admin_state_up=True,
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active=True)
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for l3_agent in l3_agents:
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LOG.debug(_('Notify agent at %(topic)s.%(host)s the message '
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'%(method)s'),
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{'topic': l3_agent.topic,
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'host': l3_agent.host,
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'method': method})
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self.cast(
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context, self.make_msg(method,
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routers=[router_id]),
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topic='%s.%s' % (l3_agent.topic, l3_agent.host),
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version='1.1')
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def _notification(self, context, method, router_ids, operation, data):
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"""Notify all the agents that are hosting the routers."""
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plugin = manager.NeutronManager.get_service_plugins().get(
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service_constants.L3_ROUTER_NAT)
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if not plugin:
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LOG.error(_('No plugin for L3 routing registered. Cannot notify '
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'agents with the message %s'), method)
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return
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if utils.is_extension_supported(
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plugin, constants.L3_AGENT_SCHEDULER_EXT_ALIAS):
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adminContext = (context.is_admin and
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context or context.elevated())
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plugin.schedule_routers(adminContext, router_ids)
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self._agent_notification(
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context, method, router_ids, operation, data)
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else:
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self.fanout_cast(
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context, self.make_msg(method,
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routers=router_ids),
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topic=topics.L3_AGENT)
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def _notification_fanout(self, context, method, router_id):
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"""Fanout the deleted router to all L3 agents."""
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LOG.debug(_('Fanout notify agent at %(topic)s the message '
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'%(method)s on router %(router_id)s'),
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{'topic': topics.L3_AGENT,
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'method': method,
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'router_id': router_id})
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self.fanout_cast(
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context, self.make_msg(method,
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router_id=router_id),
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topic=topics.L3_AGENT)
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def agent_updated(self, context, admin_state_up, host):
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self._notification_host(context, 'agent_updated',
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{'admin_state_up': admin_state_up},
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host)
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def router_deleted(self, context, router_id):
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self._notification_fanout(context, 'router_deleted', router_id)
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def routers_updated(self, context, router_ids, operation=None, data=None):
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if router_ids:
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self._notification(context, 'routers_updated', router_ids,
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operation, data)
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def router_removed_from_agent(self, context, router_id, host):
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self._notification_host(context, 'router_removed_from_agent',
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{'router_id': router_id}, host)
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def router_added_to_agent(self, context, router_ids, host):
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self._notification_host(context, 'router_added_to_agent',
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router_ids, host)
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