77 lines
3.0 KiB
Python
77 lines
3.0 KiB
Python
# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
from neutron_lib.api.definitions import portbindings
|
|
from neutron_lib.callbacks import events
|
|
from neutron_lib.callbacks import registry
|
|
from neutron_lib.callbacks import resources
|
|
from neutron_lib import constants
|
|
from neutron_lib.db import api as db_api
|
|
from neutron_lib.plugins import constants as plugin_constants
|
|
from neutron_lib.plugins import directory
|
|
|
|
from neutron.db import l3_agentschedulers_db as l3_sch_db
|
|
from neutron.objects import agent as ag_obj
|
|
|
|
|
|
class L3_HA_scheduler_db_mixin(l3_sch_db.AZL3AgentSchedulerDbMixin):
|
|
|
|
def get_l3_agents_ordered_by_num_routers(self, context, agent_ids):
|
|
if not agent_ids:
|
|
return []
|
|
return ag_obj.Agent.get_l3_agents_ordered_by_num_routers(
|
|
context, agent_ids)
|
|
|
|
def _get_agents_dict_for_router(self, agents_and_states):
|
|
agents = []
|
|
for agent, ha_state in agents_and_states:
|
|
l3_agent_dict = self._make_agent_dict(agent)
|
|
l3_agent_dict['ha_state'] = ha_state
|
|
agents.append(l3_agent_dict)
|
|
return {'agents': agents}
|
|
|
|
def list_l3_agents_hosting_router(self, context, router_id):
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
router_db = self._get_router(context, router_id)
|
|
if router_db.extra_attributes.ha:
|
|
agents = self.get_l3_bindings_hosting_router_with_ha_states(
|
|
context, router_id)
|
|
else:
|
|
agents = self._get_l3_agents_hosting_routers(
|
|
context, [router_id])
|
|
agents = [(agent, None) for agent in agents]
|
|
|
|
return self._get_agents_dict_for_router(agents)
|
|
|
|
|
|
def _notify_l3_agent_ha_port_update(resource, event, trigger, payload):
|
|
new_port = payload.latest_state
|
|
original_port = payload.states[0]
|
|
context = payload.context
|
|
host = new_port.get(portbindings.HOST_ID)
|
|
|
|
if new_port and original_port and host:
|
|
new_device_owner = new_port.get('device_owner', '')
|
|
if (new_device_owner == constants.DEVICE_OWNER_ROUTER_HA_INTF and
|
|
new_port['status'] == constants.PORT_STATUS_ACTIVE and
|
|
original_port['status'] != new_port['status']):
|
|
l3plugin = directory.get_plugin(plugin_constants.L3)
|
|
l3plugin.l3_rpc_notifier.routers_updated_on_host(
|
|
context, [new_port['device_id']], host)
|
|
|
|
|
|
def subscribe():
|
|
registry.subscribe(
|
|
_notify_l3_agent_ha_port_update, resources.PORT, events.AFTER_UPDATE)
|