# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation. # Copyright (C) 2012 Isaku Yamahata # # 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. # This module provides a basic set of REST API. # - Network registration # - End-point port management # - OpenFlow port number # - MAC address (for anti-spoofing) # # Used by OpenStack Ryu plug-in. import json from webob import Response from ryu.app import wsgi as app_wsgi from ryu.app.wsgi import ControllerBase, WSGIApplication from ryu.base import app_manager from ryu.controller import network from ryu.exception import NetworkNotFound, NetworkAlreadyExist from ryu.exception import PortNotFound, PortAlreadyExist from ryu.lib import dpid as dpid_lib from ryu.lib import mac as mac_lib ## TODO:XXX ## define db interface and store those information into db # REST API # get the list of networks # GET /v1.0/networks/ # # register a new network. # Fail if the network is already registered. # POST /v1.0/networks/{network-id} # # update a new network. # Success as nop even if the network is already registered. # # PUT /v1.0/networks/{network-id} # # remove a network # DELETE /v1.0/networks/{network-id} # # get the list of sets of dpid and port # GET /v1.0/networks/{network-id}/ # # register a new set of dpid and port # Fail if the port is already registered. # POST /v1.0/networks/{network-id}/{dpid}_{port-id} # # update a new set of dpid and port # Success as nop even if same port already registered # PUT /v1.0/networks/{network-id}/{dpid}_{port-id} # # remove a set of dpid and port # DELETE /v1.0/networks/{network-id}/{dpid}_{port-id} # # get the list of mac addresses of dpid and port # GET /v1.0/networks/{network-id}/{dpid}_{port-id}/macs/ # # register a new mac address for dpid and port # Fail if mac address is already registered or the mac address is used # for other ports of the same network-id # POST /v1.0/networks/{network-id}/{dpid}_{port-id}/macs/{mac} # # update a new mac address for dpid and port # Success as nop even if same mac address is already registered. # For now, changing mac address is not allows as it fails. # PUT /v1.0/networks/{network-id}/{dpid}_{port-id}/macs/{mac} # # For now DELETE /v1.0/networks/{network-id}/{dpid}_{port-id}/macs/{mac} # is not supported. mac address is released when port is deleted. # class NetworkController(ControllerBase): def __init__(self, req, link, data, **config): super(NetworkController, self).__init__(req, link, data, **config) self.nw = data def create(self, req, network_id, **_kwargs): try: self.nw.create_network(network_id) except NetworkAlreadyExist: return Response(status=409) else: return Response(status=200) def update(self, req, network_id, **_kwargs): self.nw.update_network(network_id) return Response(status=200) def lists(self, req, **_kwargs): body = json.dumps(self.nw.list_networks()) return Response(content_type='application/json', body=body) def delete(self, req, network_id, **_kwargs): try: self.nw.remove_network(network_id) except NetworkNotFound: return Response(status=404) return Response(status=200) class PortController(ControllerBase): def __init__(self, req, link, data, **config): super(PortController, self).__init__(req, link, data, **config) self.nw = data def create(self, req, network_id, dpid, port_id, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) try: self.nw.create_port(network_id, dpid, port_id) except NetworkNotFound: return Response(status=404) except PortAlreadyExist: return Response(status=409) return Response(status=200) def update(self, req, network_id, dpid, port_id, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) try: self.nw.update_port(network_id, dpid, port_id) except NetworkNotFound: return Response(status=404) return Response(status=200) def lists(self, req, network_id, **_kwargs): try: body = json.dumps(self.nw.list_ports(network_id)) except NetworkNotFound: return Response(status=404) return Response(content_type='application/json', body=body) def delete(self, req, network_id, dpid, port_id, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) try: self.nw.remove_port(network_id, dpid, port_id) except (NetworkNotFound, PortNotFound): return Response(status=404) return Response(status=200) class MacController(ControllerBase): def __init__(self, req, link, data, **config): super(MacController, self).__init__(req, link, data, **config) self.nw = data def create(self, _req, network_id, dpid, port_id, mac_addr, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) mac_addr = mac_lib.haddr_to_bin(mac_addr) try: self.nw.create_mac(network_id, dpid, port_id, mac_addr) except PortNotFound: return Response(status=404) except network.MacAddressAlreadyExist: return Response(status=409) return Response(status=200) def update(self, _req, network_id, dpid, port_id, mac_addr, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) mac_addr = mac_lib.haddr_to_bin(mac_addr) try: self.nw.update_mac(network_id, dpid, port_id, mac_addr) except PortNotFound: return Response(status=404) return Response(status=200) def lists(self, _req, network_id, dpid, port_id, **_kwargs): dpid = dpid_lib.str_to_dpid(dpid) port_id = int(port_id) try: body = json.dumps([mac_lib.haddr_to_str(mac_addr) for mac_addr in self.nw.list_mac(dpid, port_id)]) except PortNotFound: return Response(status=404) return Response(content_type='application/json', body=body) class RestAPI(app_manager.RyuApp): _CONTEXTS = { 'network': network.Network, 'wsgi': WSGIApplication } def __init__(self, *args, **kwargs): super(RestAPI, self).__init__(*args, **kwargs) self.nw = kwargs['network'] wsgi = kwargs['wsgi'] mapper = wsgi.mapper wsgi.registory['NetworkController'] = self.nw route_name = 'networks' uri = '/v1.0/networks' mapper.connect(route_name, uri, controller=NetworkController, action='lists', conditions=dict(method=['GET', 'HEAD'])) uri += '/{network_id}' s = mapper.submapper(controller=NetworkController) s.connect(route_name, uri, action='create', conditions=dict(method=['POST'])) s.connect(route_name, uri, action='update', conditions=dict(method=['PUT'])) s.connect(route_name, uri, action='delete', conditions=dict(method=['DELETE'])) wsgi.registory['PortController'] = self.nw route_name = 'ports' mapper.connect(route_name, uri, controller=PortController, action='lists', conditions=dict(method=['GET'])) uri += '/{dpid}_{port_id}' requirements = {'dpid': dpid_lib.DPID_PATTERN, 'port_id': app_wsgi.DIGIT_PATTERN} s = mapper.submapper(controller=PortController, requirements=requirements) s.connect(route_name, uri, action='create', conditions=dict(method=['POST'])) s.connect(route_name, uri, action='update', conditions=dict(method=['PUT'])) s.connect(route_name, uri, action='delete', conditions=dict(method=['DELETE'])) wsgi.registory['MacController'] = self.nw route_name = 'macs' uri += '/macs' mapper.connect(route_name, uri, controller=MacController, action='lists', conditions=dict(method=['GET']), requirements=requirements) uri += '/{mac_addr}' requirements['mac_addr'] = mac_lib.HADDR_PATTERN s = mapper.submapper(controller=MacController, requirements=requirements) s.connect(route_name, uri, action='create', conditions=dict(method=['POST'])) s.connect(route_name, uri, action='update', conditions=dict(method=['PUT']))