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OpenStack Study: dhcpagentscheduler.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.common import exceptions from neutron.extensions import agent from neutron import manager from neutron import policy from neutron import wsgi DHCP_NET = 'dhcp-network' DHCP_NETS = DHCP_NET + 's' DHCP_AGENT = 'dhcp-agent' DHCP_AGENTS = DHCP_AGENT + 's'
**** CubicPower OpenStack Study **** class NetworkSchedulerController(wsgi.Controller):
**** CubicPower OpenStack Study **** def index(self, request, **kwargs): plugin = manager.NeutronManager.get_plugin() policy.enforce(request.context, "get_%s" % DHCP_NETS, {}) return plugin.list_networks_on_dhcp_agent( request.context, kwargs['agent_id'])
**** CubicPower OpenStack Study **** def create(self, request, body, **kwargs): plugin = manager.NeutronManager.get_plugin() policy.enforce(request.context, "create_%s" % DHCP_NET, {}) return plugin.add_network_to_dhcp_agent( request.context, kwargs['agent_id'], body['network_id'])
**** CubicPower OpenStack Study **** def delete(self, request, id, **kwargs): plugin = manager.NeutronManager.get_plugin() policy.enforce(request.context, "delete_%s" % DHCP_NET, {}) return plugin.remove_network_from_dhcp_agent( request.context, kwargs['agent_id'], id)
**** CubicPower OpenStack Study **** class DhcpAgentsHostingNetworkController(wsgi.Controller):
**** CubicPower OpenStack Study **** def index(self, request, **kwargs): plugin = manager.NeutronManager.get_plugin() policy.enforce(request.context, "get_%s" % DHCP_AGENTS, {}) return plugin.list_dhcp_agents_hosting_network( request.context, kwargs['network_id'])
**** CubicPower OpenStack Study **** class Dhcpagentscheduler(extensions.ExtensionDescriptor): """Extension class supporting dhcp agent scheduler. """ @classmethod
**** CubicPower OpenStack Study **** def get_name(cls): return "DHCP Agent Scheduler" @classmethod
**** CubicPower OpenStack Study **** def get_alias(cls): return constants.DHCP_AGENT_SCHEDULER_EXT_ALIAS @classmethod
**** CubicPower OpenStack Study **** def get_description(cls): return "Schedule networks among dhcp agents" @classmethod
**** CubicPower OpenStack Study **** def get_namespace(cls): return "http://docs.openstack.org/ext/dhcp_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(NetworkSchedulerController(), base.FAULT_MAP) exts.append(extensions.ResourceExtension( DHCP_NETS, controller, parent)) parent = dict(member_name="network", collection_name="networks") controller = resource.Resource(DhcpAgentsHostingNetworkController(), base.FAULT_MAP) exts.append(extensions.ResourceExtension( DHCP_AGENTS, controller, parent)) return exts
**** CubicPower OpenStack Study **** def get_extended_resources(self, version): return {}
**** CubicPower OpenStack Study **** class InvalidDHCPAgent(agent.AgentNotFound): message = _("Agent %(id)s is not a valid DHCP Agent or has been disabled")
**** CubicPower OpenStack Study **** class NetworkHostedByDHCPAgent(exceptions.Conflict): message = _("The network %(network_id)s has been already hosted" " by the DHCP Agent %(agent_id)s.")
**** CubicPower OpenStack Study **** class NetworkNotHostedByDhcpAgent(exceptions.Conflict): message = _("The network %(network_id)s is not hosted" " by the DHCP agent %(agent_id)s.")
**** CubicPower OpenStack Study **** class DhcpAgentSchedulerPluginBase(object): """REST API to operate the DHCP agent scheduler. All of method must be in an admin context. """ @abstractmethod
**** CubicPower OpenStack Study **** def add_network_to_dhcp_agent(self, context, id, network_id): pass @abstractmethod
**** CubicPower OpenStack Study **** def remove_network_from_dhcp_agent(self, context, id, network_id): pass @abstractmethod
**** CubicPower OpenStack Study **** def list_networks_on_dhcp_agent(self, context, id): pass @abstractmethod
**** CubicPower OpenStack Study **** def list_dhcp_agents_hosting_network(self, context, network_id): pass
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