00897bd3b7
3rd part of blueprint quantum-scheduler 1. Allow networks to be hosted by certain dhcp agents. Network to dhcp agent is a many to many relationship. Provide a simple scheduler to schedule a network randomly to an active dhcp agent when a network or port is created. 2. Allow admin user to (de)schedule network to a certain dhcp agent manually. 3. Allow routers to be hosted by a certain l3 agent. Router to l3 agent is a many to one relationship. Provide a simple scheduler to schedule a router to l3 agent if the router is not scheduled when the router is updated. 4. Auto schedule networks and routers to agents when agents start. 5. Only support ovs plugin at this point Change-Id: Iddec3ea9d4c0fe2d51a59f7db47145722fc5a1cd
253 lines
8.1 KiB
Python
253 lines
8.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2013 OpenStack, LLC.
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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 quantum.api import extensions
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from quantum.api.v2 import base
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from quantum.api.v2 import resource
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from quantum.common import constants
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from quantum.common import exceptions
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from quantum.extensions import agent
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from quantum import manager
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from quantum import policy
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from quantum import wsgi
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DHCP_NET = 'dhcp-network'
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DHCP_NETS = DHCP_NET + 's'
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DHCP_AGENT = 'dhcp-agent'
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DHCP_AGENTS = DHCP_AGENT + 's'
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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 NetworkSchedulerController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.QuantumManager.get_plugin()
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policy.enforce(request.context,
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"get_%s" % DHCP_NETS,
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{},
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plugin=plugin)
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return plugin.list_networks_on_dhcp_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.QuantumManager.get_plugin()
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policy.enforce(request.context,
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"create_%s" % DHCP_NET,
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{},
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plugin=plugin)
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return plugin.add_network_to_dhcp_agent(
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request.context, kwargs['agent_id'], body['network_id'])
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def delete(self, request, id, **kwargs):
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plugin = manager.QuantumManager.get_plugin()
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policy.enforce(request.context,
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"delete_%s" % DHCP_NET,
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{},
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plugin=plugin)
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return plugin.remove_network_from_dhcp_agent(
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request.context, kwargs['agent_id'], id)
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class RouterSchedulerController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.QuantumManager.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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plugin=plugin)
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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.QuantumManager.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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plugin=plugin)
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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.QuantumManager.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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plugin=plugin)
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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 DhcpAgentsHostingNetworkController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.QuantumManager.get_plugin()
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policy.enforce(request.context,
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"get_%s" % DHCP_AGENTS,
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{},
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plugin=plugin)
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return plugin.list_dhcp_agents_hosting_network(
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request.context, kwargs['network_id'])
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class L3AgentsHostingRouterController(wsgi.Controller):
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def index(self, request, **kwargs):
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plugin = manager.QuantumManager.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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plugin=plugin)
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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 Agentscheduler(extensions.ExtensionDescriptor):
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"""Extension class supporting agent scheduler.
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"""
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@classmethod
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def get_name(cls):
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return "Agent Schedulers"
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@classmethod
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def get_alias(cls):
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return constants.AGENT_SCHEDULER_EXT_ALIAS
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@classmethod
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def get_description(cls):
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return "Schedule resources among agents"
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@classmethod
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def get_namespace(cls):
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return "http://docs.openstack.org/ext/agent_scheduler/api/v1.0"
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@classmethod
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def get_updated(cls):
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return "2013-02-03T10:00:00-00:00"
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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(NetworkSchedulerController(),
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base.FAULT_MAP)
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exts.append(extensions.ResourceExtension(
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DHCP_NETS, controller, parent))
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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="network",
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collection_name="networks")
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controller = resource.Resource(DhcpAgentsHostingNetworkController(),
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base.FAULT_MAP)
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exts.append(extensions.ResourceExtension(
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DHCP_AGENTS, 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 InvalidDHCPAgent(agent.AgentNotFound):
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message = _("Agent %(id)s is not a valid DHCP Agent or has been disabled")
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class NetworkHostedByDHCPAgent(exceptions.Conflict):
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message = _("The network %(network_id)s has been already hosted"
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" by the DHCP Agent %(agent_id)s.")
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class NetworkNotHostedByDhcpAgent(exceptions.Conflict):
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message = _("The network %(network_id)s is not hosted"
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" by the DHCP agent %(agent_id)s.")
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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 AgentSchedulerPluginBase(object):
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""" REST API to operate the 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_network_to_dhcp_agent(self, context, id, network_id):
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pass
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@abstractmethod
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def remove_network_from_dhcp_agent(self, context, id, network_id):
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pass
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@abstractmethod
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def list_networks_on_dhcp_agent(self, context, id):
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pass
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@abstractmethod
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def list_dhcp_agents_hosting_network(self, context, network_id):
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pass
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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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