--- /dev/null
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+##
+# Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
+# This file is part of openvim
+# 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.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact with: nfvlabs@tid.es
+##
+
+"""
+Implement the plugging for floodligth openflow controller
+It creates the class OF_conn to create dataplane connections
+with static rules based on packet destination MAC address
+"""
+
+__author__ = "Pablo Montes, Alfonso Tierno"
+__date__ = "$28-oct-2014 12:07:15$"
+
+import json
+import requests
+import logging
+import openflow_conn
+
+
+class OF_conn(openflow_conn.OpenflowConn):
+ """
+ Openflow Connector for Floodlight.
+ No MAC learning is used
+ version 0.9 or 1.X is autodetected
+ version 1.X is in progress, not finished!!!
+ """
+
+ def __init__(self, params):
+ """
+ Constructor
+ :param self:
+ :param params: dictionay with the following keys:
+ of_dpid: DPID to use for this controller
+ of_ip: controller IP address
+ of_port: controller TCP port
+ of_version: version, can be "0.9" or "1.X". By default it is autodetected
+ of_debug: debug level for logging. Default to ERROR
+ other keys are ignored
+ :return: Raise an ValueError exception if same parameter is missing or wrong
+ """
+ # check params
+ if "of_ip" not in params or params["of_ip"] == None or "of_port" not in params or params["of_port"] == None:
+ raise ValueError("IP address and port must be provided")
+
+ openflow_conn.OpenflowConn.__init__(self, params)
+
+ self.name = "Floodlight"
+ self.dpid = str(params["of_dpid"])
+ self.url = "http://%s:%s" % (str(params["of_ip"]), str(params["of_port"]))
+
+ self.pp2ofi = {} # From Physical Port to OpenFlow Index
+ self.ofi2pp = {} # From OpenFlow Index to Physical Port
+ self.headers = {'content-type': 'application/json', 'Accept': 'application/json'}
+ self.version = None
+ self.logger = logging.getLogger('vim.OF.FL')
+ self.logger.setLevel(getattr(logging, params.get("of_debug", "ERROR")))
+ self._set_version(params.get("of_version"))
+
+ def _set_version(self, version):
+ """
+ set up a version of the controller.
+ Depending on the version it fills the self.ver_names with the naming used in this version
+ :param version: Openflow controller version
+ :return: Raise an ValueError exception if same parameter is missing or wrong
+ """
+ # static version names
+ if version == None:
+ self.version = None
+ elif version == "0.9":
+ self.version = version
+ self.name = "Floodlightv0.9"
+ self.ver_names = {
+ "dpid": "dpid",
+ "URLmodifier": "staticflowentrypusher",
+ "destmac": "dst-mac",
+ "vlanid": "vlan-id",
+ "inport": "ingress-port",
+ "setvlan": "set-vlan-id",
+ "stripvlan": "strip-vlan",
+ }
+ elif version[0] == "1": # version 1.X
+ self.version = version
+ self.name = "Floodlightv1.X"
+ self.ver_names = {
+ "dpid": "switchDPID",
+ "URLmodifier": "staticflowpusher",
+ "destmac": "eth_dst",
+ "vlanid": "eth_vlan_vid",
+ "inport": "in_port",
+ "setvlan": "set_vlan_vid",
+ "stripvlan": "strip_vlan",
+ }
+ else:
+ raise ValueError("Invalid version for floodlight controller")
+
+ def get_of_switches(self):
+ """
+ Obtain a a list of switches or DPID detected by this controller
+ :return: list where each element a tuple pair (DPID, IP address)
+ Raise an OpenflowconnConnectionException or OpenflowconnConnectionException exception if same
+ parameter is missing or wrong
+ """
+ try:
+ of_response = requests.get(self.url + "/wm/core/controller/switches/json", headers=self.headers)
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("get_of_switches " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("get_of_switches " + error_text)
+ info = of_response.json()
+ if type(info) != list and type(info) != tuple:
+ self.logger.error("get_of_switches. Unexpected response not a list %s", str(type(info)))
+ raise openflow_conn.OpenflowconnUnexpectedResponse("Unexpected response, not a list. Wrong version?")
+ if len(info) == 0:
+ return info
+ # autodiscover version
+ if self.version == None:
+ if 'dpid' in info[0] and 'inetAddress' in info[0]:
+ self._set_version("0.9")
+ elif 'switchDPID' in info[0] and 'inetAddress' in info[0]:
+ self._set_version("1.X")
+ else:
+ self.logger.error(
+ "get_of_switches. Unexpected response, not found 'dpid' or 'switchDPID' field: %s",
+ str(info[0]))
+ raise openflow_conn.OpenflowconnUnexpectedResponse("Unexpected response, not found 'dpid' or "
+ "'switchDPID' field. Wrong version?")
+
+ switch_list = []
+ for switch in info:
+ switch_list.append((switch[self.ver_names["dpid"]], switch['inetAddress']))
+ return switch_list
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("get_of_switches " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+ except ValueError as e:
+ # ValueError in the case that JSON can not be decoded
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("get_of_switches " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+
+ def get_of_rules(self, translate_of_ports=True):
+ """
+ Obtain the rules inserted at openflow controller
+ :param translate_of_ports: if True it translates ports from openflow index to physical switch name
+ :return: dict if ok: with the rule name as key and value is another dictionary with the following content:
+ priority: rule priority
+ name: rule name (present also as the master dict key)
+ ingress_port: match input port of the rule
+ dst_mac: match destination mac address of the rule, can be missing or None if not apply
+ vlan_id: match vlan tag of the rule, can be missing or None if not apply
+ actions: list of actions, composed by a pair tuples:
+ (vlan, None/int): for stripping/setting a vlan tag
+ (out, port): send to this port
+ switch: DPID, all
+ Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ """
+
+ try:
+ # get translation, autodiscover version
+ if len(self.ofi2pp) == 0:
+ self.obtain_port_correspondence()
+
+ of_response = requests.get(self.url + "/wm/%s/list/%s/json" % (self.ver_names["URLmodifier"], self.dpid),
+ headers=self.headers)
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("get_of_rules " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("get_of_rules " + error_text)
+ info = of_response.json()
+ if type(info) != dict:
+ self.logger.error("get_of_rules. Unexpected response not a dict %s", str(type(info)))
+ raise openflow_conn.OpenflowconnUnexpectedResponse("Unexpected response, not a dict. Wrong version?")
+ rule_dict = {}
+ for switch, switch_info in info.iteritems():
+ if switch_info == None:
+ continue
+ if str(switch) != self.dpid:
+ continue
+ for name, details in switch_info.iteritems():
+ rule = {}
+ rule["switch"] = str(switch)
+ # rule["active"] = "true"
+ rule["priority"] = int(details["priority"])
+ if self.version[0] == "0":
+ if translate_of_ports:
+ rule["ingress_port"] = self.ofi2pp[details["match"]["inputPort"]]
+ else:
+ rule["ingress_port"] = str(details["match"]["inputPort"])
+ dst_mac = details["match"]["dataLayerDestination"]
+ if dst_mac != "00:00:00:00:00:00":
+ rule["dst_mac"] = dst_mac
+ vlan = details["match"]["dataLayerVirtualLan"]
+ if vlan != -1:
+ rule["vlan_id"] = vlan
+ actionlist = []
+ for action in details["actions"]:
+ if action["type"] == "OUTPUT":
+ if translate_of_ports:
+ port = self.ofi2pp[action["port"]]
+ else:
+ port = action["port"]
+ actionlist.append(("out", port))
+ elif action["type"] == "STRIP_VLAN":
+ actionlist.append(("vlan", None))
+ elif action["type"] == "SET_VLAN_ID":
+ actionlist.append(("vlan", action["virtualLanIdentifier"]))
+ else:
+ actionlist.append((action["type"], str(action)))
+ self.logger.warning("get_of_rules() Unknown action in rule %s: %s", rule["name"],
+ str(action))
+ rule["actions"] = actionlist
+ elif self.version[0] == "1":
+ if translate_of_ports:
+ rule["ingress_port"] = self.ofi2pp[details["match"]["in_port"]]
+ else:
+ rule["ingress_port"] = details["match"]["in_port"]
+ if "eth_dst" in details["match"]:
+ dst_mac = details["match"]["eth_dst"]
+ if dst_mac != "00:00:00:00:00:00":
+ rule["dst_mac"] = dst_mac
+ if "eth_vlan_vid" in details["match"]:
+ vlan = int(details["match"]["eth_vlan_vid"], 16) & 0xFFF
+ rule["vlan_id"] = str(vlan)
+ actionlist = []
+ for action in details["instructions"]["instruction_apply_actions"]:
+ if action == "output":
+ if translate_of_ports:
+ port = self.ofi2pp[details["instructions"]["instruction_apply_actions"]["output"]]
+ else:
+ port = details["instructions"]["instruction_apply_actions"]["output"]
+ actionlist.append(("out", port))
+ elif action == "strip_vlan":
+ actionlist.append(("vlan", None))
+ elif action == "set_vlan_vid":
+ actionlist.append(
+ ("vlan", details["instructions"]["instruction_apply_actions"]["set_vlan_vid"]))
+ else:
+ self.logger.error("get_of_rules Unknown action in rule %s: %s", rule["name"],
+ str(action))
+ # actionlist.append( (action, str(details["instructions"]["instruction_apply_actions"]) ))
+ rule_dict[str(name)] = rule
+ return rule_dict
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("get_of_rules " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+ except ValueError as e:
+ # ValueError in the case that JSON can not be decoded
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("get_of_rules " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+
+ def obtain_port_correspondence(self):
+ """
+ Obtain the correspondence between physical and openflow port names
+ :return: dictionary: with physical name as key, openflow name as value
+ Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ """
+ try:
+ of_response = requests.get(self.url + "/wm/core/controller/switches/json", headers=self.headers)
+ # print vim_response.status_code
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("obtain_port_correspondence " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("obtain_port_correspondence " + error_text)
+ info = of_response.json()
+
+ if type(info) != list and type(info) != tuple:
+ raise openflow_conn.OpenflowconnUnexpectedResponse("unexpected openflow response, not a list. "
+ "Wrong version?")
+
+ index = -1
+ if len(info) > 0:
+ # autodiscover version
+ if self.version == None:
+ if 'dpid' in info[0] and 'ports' in info[0]:
+ self._set_version("0.9")
+ elif 'switchDPID' in info[0]:
+ self._set_version("1.X")
+ else:
+ raise openflow_conn.OpenflowconnUnexpectedResponse("unexpected openflow response, "
+ "Wrong version?")
+
+ for i in range(0, len(info)):
+ if info[i][self.ver_names["dpid"]] == self.dpid:
+ index = i
+ break
+ if index == -1:
+ text = "DPID '" + self.dpid + "' not present in controller " + self.url
+ # print self.name, ": get_of_controller_info ERROR", text
+ raise openflow_conn.OpenflowconnUnexpectedResponse(text)
+ else:
+ if self.version[0] == "0":
+ ports = info[index]["ports"]
+ else: # version 1.X
+ of_response = requests.get(self.url + "/wm/core/switch/%s/port-desc/json" % self.dpid,
+ headers=self.headers)
+ # print vim_response.status_code
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("obtain_port_correspondence " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("obtain_port_correspondence " + error_text)
+ info = of_response.json()
+ if type(info) != dict:
+ raise openflow_conn.OpenflowconnUnexpectedResponse("unexpected openflow port-desc response, "
+ "not a dict. Wrong version?")
+ if "portDesc" not in info:
+ raise openflow_conn.OpenflowconnUnexpectedResponse("unexpected openflow port-desc response, "
+ "'portDesc' not found. Wrong version?")
+ if type(info["portDesc"]) != list and type(info["portDesc"]) != tuple:
+ raise openflow_conn.OpenflowconnUnexpectedResponse("unexpected openflow port-desc response at "
+ "'portDesc', not a list. Wrong version?")
+ ports = info["portDesc"]
+ for port in ports:
+ self.pp2ofi[str(port["name"])] = str(port["portNumber"])
+ self.ofi2pp[port["portNumber"]] = str(port["name"])
+ # print self.name, ": get_of_controller_info ports:", self.pp2ofi
+ return self.pp2ofi
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("obtain_port_correspondence " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+ except ValueError as e:
+ # ValueError in the case that JSON can not be decoded
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("obtain_port_correspondence " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+
+ def del_flow(self, flow_name):
+ """
+ Delete an existing rule
+ :param flow_name: this is the rule name
+ :return: None if ok
+ Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ """
+ try:
+
+ # Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ # autodiscover version
+
+ if self.version == None:
+ self.get_of_switches()
+
+ of_response = requests.delete(self.url + "/wm/%s/json" % self.ver_names["URLmodifier"],
+ headers=self.headers,
+ data='{"switch":"%s","name":"%s"}' % (self.dpid, flow_name)
+ )
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("del_flow " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("del_flow OK " + error_text)
+ return None
+
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("del_flow " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+
+ def new_flow(self, data):
+ """
+ Insert a new static rule
+ :param data: dictionary with the following content:
+ priority: rule priority
+ name: rule name
+ ingress_port: match input port of the rule
+ dst_mac: match destination mac address of the rule, missing or None if not apply
+ vlan_id: match vlan tag of the rule, missing or None if not apply
+ actions: list of actions, composed by a pair tuples with these posibilities:
+ ('vlan', None/int): for stripping/setting a vlan tag
+ ('out', port): send to this port
+ :return: None if ok
+ Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ """
+ # get translation, autodiscover version
+ if len(self.pp2ofi) == 0:
+ self.obtain_port_correspondence()
+
+ try:
+ # We have to build the data for the floodlight call from the generic data
+ sdata = {'active': "true", "name": data["name"]}
+ if data.get("priority"):
+ sdata["priority"] = str(data["priority"])
+ if data.get("vlan_id"):
+ sdata[self.ver_names["vlanid"]] = data["vlan_id"]
+ if data.get("dst_mac"):
+ sdata[self.ver_names["destmac"]] = data["dst_mac"]
+ sdata['switch'] = self.dpid
+ if not data['ingress_port'] in self.pp2ofi:
+ error_text = 'Error. Port ' + data['ingress_port'] + ' is not present in the switch'
+ self.logger.warning("new_flow " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+
+ sdata[self.ver_names["inport"]] = self.pp2ofi[data['ingress_port']]
+ sdata['actions'] = ""
+
+ for action in data['actions']:
+ if len(sdata['actions']) > 0:
+ sdata['actions'] += ','
+ if action[0] == "vlan":
+ if action[1] == None:
+ sdata['actions'] += self.ver_names["stripvlan"]
+ else:
+ sdata['actions'] += self.ver_names["setvlan"] + "=" + str(action[1])
+ elif action[0] == 'out':
+ sdata['actions'] += "output=" + self.pp2ofi[action[1]]
+
+ of_response = requests.post(self.url + "/wm/%s/json" % self.ver_names["URLmodifier"],
+ headers=self.headers, data=json.dumps(sdata))
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code != 200:
+ self.logger.warning("new_flow " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("new_flow OK" + error_text)
+ return None
+
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("new_flow " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+
+ def clear_all_flows(self):
+ """
+ Delete all existing rules
+ :return: None if ok
+ Raise an openflowconnUnexpectedResponse exception if fails with text_error
+ """
+
+ try:
+ # autodiscover version
+ if self.version == None:
+ sw_list = self.get_of_switches()
+ if len(sw_list) == 0: # empty
+ return None
+
+ url = self.url + "/wm/%s/clear/%s/json" % (self.ver_names["URLmodifier"], self.dpid)
+ of_response = requests.get(url)
+ error_text = "Openflow response %d: %s" % (of_response.status_code, of_response.text)
+ if of_response.status_code < 200 or of_response.status_code >= 300:
+ self.logger.warning("clear_all_flows " + error_text)
+ raise openflow_conn.OpenflowconnUnexpectedResponse(error_text)
+ self.logger.debug("clear_all_flows OK " + error_text)
+ return None
+ except requests.exceptions.RequestException as e:
+ error_text = type(e).__name__ + ": " + str(e)
+ self.logger.error("clear_all_flows " + error_text)
+ raise openflow_conn.OpenflowconnConnectionException(error_text)
+
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