0471248b97
Rationale behind this is that some plugins may support only dhcp or l3 agent scheduling. The patch is nothing more than refactoring. Functionality was not changed. Fixes bug 1196806 Change-Id: Ie174059adfaed3028bbf65de7bde3497dd9bc664
163 lines
4.9 KiB
Python
163 lines
4.9 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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from abc import abstractmethod
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from neutron.api import extensions
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from neutron.api.v2 import base
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from neutron.api.v2 import resource
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from neutron.common import constants
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from neutron.common import exceptions
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from neutron.extensions import agent
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from neutron import manager
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from neutron import policy
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from neutron import wsgi
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L3_ROUTER = 'l3-router'
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L3_ROUTERS = L3_ROUTER + 's'
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L3_AGENT = 'l3-agent'
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L3_AGENTS = L3_AGENT + 's'
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class RouterSchedulerController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.NeutronManager.get_plugin()
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policy.enforce(request.context,
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"get_%s" % L3_ROUTERS,
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{})
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return plugin.list_routers_on_l3_agent(
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request.context, kwargs['agent_id'])
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def create(self, request, body, **kwargs):
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plugin = manager.NeutronManager.get_plugin()
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policy.enforce(request.context,
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"create_%s" % L3_ROUTER,
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{})
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return plugin.add_router_to_l3_agent(
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request.context,
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kwargs['agent_id'],
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body['router_id'])
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def delete(self, request, id, **kwargs):
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plugin = manager.NeutronManager.get_plugin()
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policy.enforce(request.context,
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"delete_%s" % L3_ROUTER,
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{})
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return plugin.remove_router_from_l3_agent(
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request.context, kwargs['agent_id'], id)
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class L3AgentsHostingRouterController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.NeutronManager.get_plugin()
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policy.enforce(request.context,
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"get_%s" % L3_AGENTS,
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{})
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return plugin.list_l3_agents_hosting_router(
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request.context, kwargs['router_id'])
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class L3agentscheduler(extensions.ExtensionDescriptor):
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"""Extension class supporting l3 agent scheduler.
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"""
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@classmethod
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def get_name(cls):
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return "L3 Agent Scheduler"
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@classmethod
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def get_alias(cls):
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return constants.L3_AGENT_SCHEDULER_EXT_ALIAS
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@classmethod
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def get_description(cls):
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return "Schedule routers among l3 agents"
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@classmethod
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def get_namespace(cls):
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return "http://docs.openstack.org/ext/l3_agent_scheduler/api/v1.0"
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@classmethod
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def get_updated(cls):
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return "2013-02-07T10:00:00-00:00"
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@classmethod
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def get_resources(cls):
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"""Returns Ext Resources."""
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exts = []
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parent = dict(member_name="agent",
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collection_name="agents")
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controller = resource.Resource(RouterSchedulerController(),
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base.FAULT_MAP)
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exts.append(extensions.ResourceExtension(
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L3_ROUTERS, controller, parent))
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parent = dict(member_name="router",
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collection_name="routers")
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controller = resource.Resource(L3AgentsHostingRouterController(),
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base.FAULT_MAP)
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exts.append(extensions.ResourceExtension(
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L3_AGENTS, controller, parent))
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return exts
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def get_extended_resources(self, version):
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return {}
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class InvalidL3Agent(agent.AgentNotFound):
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message = _("Agent %(id)s is not a L3 Agent or has been disabled")
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class RouterHostedByL3Agent(exceptions.Conflict):
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message = _("The router %(router_id)s has been already hosted"
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" by the L3 Agent %(agent_id)s.")
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class RouterSchedulingFailed(exceptions.Conflict):
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message = _("Failed scheduling router %(router_id)s to"
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" the L3 Agent %(agent_id)s.")
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class RouterNotHostedByL3Agent(exceptions.Conflict):
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message = _("The router %(router_id)s is not hosted"
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" by L3 agent %(agent_id)s.")
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class L3AgentSchedulerPluginBase(object):
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"""REST API to operate the l3 agent scheduler.
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All of method must be in an admin context.
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"""
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@abstractmethod
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def add_router_to_l3_agent(self, context, id, router_id):
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pass
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@abstractmethod
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def remove_router_from_l3_agent(self, context, id, router_id):
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pass
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@abstractmethod
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def list_routers_on_l3_agent(self, context, id):
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pass
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@abstractmethod
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def list_l3_agents_hosting_router(self, context, router_id):
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pass
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