¡@
OpenStack Study: lbaas_agentscheduler.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright (c) 2013 OpenStack Foundation. # All rights reserved. # # 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 abc import abstractmethod from neutron.api import extensions from neutron.api.v2 import base from neutron.api.v2 import resource from neutron.common import constants from neutron.extensions import agent from neutron.extensions import loadbalancer from neutron import manager from neutron.plugins.common import constants as plugin_const from neutron import policy from neutron import wsgi LOADBALANCER_POOL = 'loadbalancer-pool' LOADBALANCER_POOLS = LOADBALANCER_POOL + 's' LOADBALANCER_AGENT = 'loadbalancer-agent'
**** CubicPower OpenStack Study **** class PoolSchedulerController(wsgi.Controller):
**** CubicPower OpenStack Study **** def index(self, request, **kwargs): lbaas_plugin = manager.NeutronManager.get_service_plugins().get( plugin_const.LOADBALANCER) if not lbaas_plugin: return {'pools': []} policy.enforce(request.context, "get_%s" % LOADBALANCER_POOLS, {}, plugin=lbaas_plugin) return lbaas_plugin.list_pools_on_lbaas_agent( request.context, kwargs['agent_id'])
**** CubicPower OpenStack Study **** class LbaasAgentHostingPoolController(wsgi.Controller):
**** CubicPower OpenStack Study **** def index(self, request, **kwargs): lbaas_plugin = manager.NeutronManager.get_service_plugins().get( plugin_const.LOADBALANCER) if not lbaas_plugin: return policy.enforce(request.context, "get_%s" % LOADBALANCER_AGENT, {}, plugin=lbaas_plugin) return lbaas_plugin.get_lbaas_agent_hosting_pool( request.context, kwargs['pool_id'])
**** CubicPower OpenStack Study **** class Lbaas_agentscheduler(extensions.ExtensionDescriptor): """Extension class supporting LBaaS agent scheduler. """ @classmethod
**** CubicPower OpenStack Study **** def get_name(cls): return "Loadbalancer Agent Scheduler" @classmethod
**** CubicPower OpenStack Study **** def get_alias(cls): return constants.LBAAS_AGENT_SCHEDULER_EXT_ALIAS @classmethod
**** CubicPower OpenStack Study **** def get_description(cls): return "Schedule pools among lbaas agents" @classmethod
**** CubicPower OpenStack Study **** def get_namespace(cls): return "http://docs.openstack.org/ext/lbaas_agent_scheduler/api/v1.0" @classmethod
**** CubicPower OpenStack Study **** def get_updated(cls): return "2013-02-07T10:00:00-00:00" @classmethod
**** CubicPower OpenStack Study **** def get_resources(cls): """Returns Ext Resources.""" exts = [] parent = dict(member_name="agent", collection_name="agents") controller = resource.Resource(PoolSchedulerController(), base.FAULT_MAP) exts.append(extensions.ResourceExtension( LOADBALANCER_POOLS, controller, parent)) parent = dict(member_name="pool", collection_name="pools") controller = resource.Resource(LbaasAgentHostingPoolController(), base.FAULT_MAP) exts.append(extensions.ResourceExtension( LOADBALANCER_AGENT, controller, parent, path_prefix=plugin_const. COMMON_PREFIXES[plugin_const.LOADBALANCER])) return exts
**** CubicPower OpenStack Study **** def get_extended_resources(self, version): return {}
**** CubicPower OpenStack Study **** class NoEligibleLbaasAgent(loadbalancer.NoEligibleBackend): message = _("No eligible loadbalancer agent found " "for pool %(pool_id)s.")
**** CubicPower OpenStack Study **** class NoActiveLbaasAgent(agent.AgentNotFound): message = _("No active loadbalancer agent found " "for pool %(pool_id)s.")
**** CubicPower OpenStack Study **** class LbaasAgentSchedulerPluginBase(object): """REST API to operate the lbaas agent scheduler. All of method must be in an admin context. """ @abstractmethod
**** CubicPower OpenStack Study **** def list_pools_on_lbaas_agent(self, context, id): pass @abstractmethod
**** CubicPower OpenStack Study **** def get_lbaas_agent_hosting_pool(self, context, pool_id): pass
|