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fv_visualization_bridge.py
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fv_visualization_bridge.py
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#!/usr/bin/env python2.7
import json,sys,threading,os
import SimpleHTTPServer, SocketServer
from jsonrpclib.SimpleJSONRPCServer import SimpleJSONRPCServer
from jsonrpc import ServiceProxy, JSONParam, proxy
import urllib2
IP="45.0.88.7"
class JSONParamEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, JSONParam):
return obj.getValueAsJson()
elif isinstance(obj, FlowSpaceChangeRequest):
return {'entry': obj.getEntry(), 'changeType': obj.getChangeType()}
elif isinstance(obj, FlowSpaceEntry):
ruleMatchStr = "OFMatch["
for rule in obj.rules:
ruleMatchStr = "%s%s=%s," % (ruleMatchStr, rule.key, rule.val)
ruleMatchStr = ruleMatchStr[0:len(ruleMatchStr)-1] + "]"
actionsList = []
for action in obj.actions:
actionDict = {}
actionsList.append(actionDict)
if action.type == 'Slice':
actionDict['vendor'] = (1 - pow(2, 31))
actionDict['type'] = "VENDOR"
actionDict['length'] = 8
actionDict['sliceName'] = action.key
actionDict['slicePerms'] = action.val
return {'id':obj.id, 'ruleMatch':ruleMatchStr, 'actionsList':actionsList, 'dpid':obj.dpid, 'priority':obj.priority}
else:
return json.JSONEncoder.default(self, obj)
class fv2d3():
def __init__(self, user = "fvadmin", passw="0penfl0w", \
host="flowvisor.openflow.interop.net", port = 9090, jsonport = 8081):
self.id = -1
self.cntstr = "https://%s:%s@%s:%d" % (user, passw, host, int(jsonport))
self.serverport = port
self.connect()
self.initialize()
self.registerCallbacks()
self.httpd = TCPServer((IP, 8000), FVHTTPHandler)
self.startservers()
def nextid(self):
self.id = self.id + 1
return self.id
def getFLLinks(self):
url = 'http://45.0.88.7:8080/wm/topology/links/json'
request = urllib2.Request(url, None, {'Content-Type':'application/json'})
try:
response = urllib2.urlopen(request)
resp_text = response.read()
except:
print "Exception:", e
print resp_text
#
# Get the current state from FV
#
def initialize(self):
self.ls = json.loads(self.fv.getLinks()['valueAsJson'])
self.dev = json.loads(self.fv.listDevices()['valueAsJson'])
self.slices = json.loads(self.fv.listSlices()['valueAsJson'])
self.flowspace = json.loads(self.fv.listFlowSpace()['valueAsJson'])
self.setHash()
self.compute()
def setHash(self):
self.dev.sort()
self.devices = []
for d in self.dev:
self.devices.append(d)
self.links = []
for link in self.ls:
link["id"] = self.nextid()
self.links.append(link)
del self.dev
del self.ls
def compute(self):
self.buildSliceInfo()
self.buildTopos()
def buildSliceInfo(self):
self.nodesPerSlice = { slice:[] for slice in self.slices }
self.linksPerSlice = {}
for fe in self.flowspace:
slices = [ actions['sliceName'] for actions in fe['actionsList'] ]
for slice in slices:
inport = fe['ruleMatch']['inputPort']
dpid = fe['dpid']
if dpid == "all_dpids":
break;
if (dpid, inport) not in self.linksPerSlice:
self.linksPerSlice[(dpid, inport)] = []
self.linksPerSlice[(dpid, inport)].append(slice)
if slice in self.nodesPerSlice.keys() and \
dpid not in self.nodesPerSlice[slice]:
self.nodesPerSlice[slice].append(dpid)
def buildTopos(self):
self.sliceTopos = { slice:[] for slice in self.slices}
for link in self.links:
src = (link['srcDPID'], int(link['srcPort']))
dst = (link['dstDPID'], int(link['dstPort']))
try:
for slice in self.linksPerSlice[src]:
if slice in self.linksPerSlice[dst] and \
link not in self.sliceTopos[slice]:
self.sliceTopos[slice].append(link)
except KeyError as inst:
continue
#print "KeyError on: %s" % inst
self.convertTod3()
def convertTod3(self):
self.topos = {}
self.topos['full'] = {}
for slice in self.slices:
self.topos[slice] = {}
self.topos[slice]['nodes'] = []
curr = {}
self.id = -1
for dev in self.nodesPerSlice[slice]:
curr[dev] = self.nextid()
self.topos[slice]['nodes'].append({"id" : curr[dev], "name" : dev })
try:
self.topos[slice]['links'] = [ {"source" :curr[link['srcDPID']],\
"target" : curr[link['dstDPID']], \
"value" : 0, "id" : link['id']} \
for link in self.sliceTopos[slice] ]
except Exception as inst:
print "Error during slice topo build: %s" % inst
try:
self.topos['full']['nodes'] = [ {"id" : self.devices.index(dev), "name" : dev, \
"index" : self.devices.index(dev) } \
for dev in self.devices ]
self.topos['full']['links'] = [ {"source" : self.devices.index(link['srcDPID']), \
"target" : self.devices.index(link['dstDPID']), \
"value" : 0, "id" : link['id'] } \
for link in self.links ]
except Exception as inst:
print "Error duing full topo build: %s" % inst
def contains(self, dpid, port, link):
if (link['srcDPID'] == dpid and link['srcPort'] == port or
link['dstDPID'] == dpid and link['dstPort'] == port):
return True
return False
def removeLinkDevice(self, device):
for link in self.links:
if (link['srcDPID'] == device or link['dstDPID'] == device):
try:
self.links.remove(link)
except Exception as inst:
print "Error link remove from device: %s" % inst
def removeLink(self, dpid, port):
for link in self.links:
if contains(dpid, port, link):
self.links.remove(link)
def removeFullLink(self, link):
for l in self.links:
if l['srcDPID'] == link['srcDPID'] and \
l['srcPort'] == link['srcPort'] and \
l['dstDPID'] == link['dstDPID'] and \
l['dstPort'] == link['dstPort']:
self.links.remove(l)
return
def connect(self):
try:
FVHTTPHandler.fv = self.getFV
self.fv = ServiceProxy(self.cntstr, JSONParamEncoder)
except:
print "Connection to FlowVisor using %s failed" % self.cntstr
sys.exit()
def getFV(self):
return self
def registerCallbacks(self):
host = "http://%s:9090" % IP
self.fv.registerTopologyEventCallback(host, "deviceConnected", "DEVICE_CONNECTED")
self.fv.registerTopologyEventCallback(host, "deviceDisconnected", "DEVICE_DISCONNECTED")
self.fv.registerTopologyEventCallback(host, "portAdded", "PORT_ADDED")
self.fv.registerTopologyEventCallback(host, "portRemoved", "PORT_REMOVED")
self.fv.registerTopologyEventCallback(host, "linkup", "LINK_UP")
self.fv.registerTopologyEventCallback(host, "linkdown", "LINK_DOWN")
def deviceConnected(self, dev):
device = dev['valueAsJson']
print "Device %s came up" % device
if device not in self.devices:
self.devices.append(device)
self.compute()
def deviceDisconnected(self, dev):
device = dev['valueAsJson']
self.devices.remove(device)
print "Device %s went down" % device
self.removeLinkDevice(device)
self.compute()
def portAdded(self, dpid, port):
p = port['valueAsJson']
dp = dpid['valueAsJson']
print "Port %s on %s was added" % (p, dp)
def portRemoved(self, dpid, port):
p = port['valueAsJson']
dp = dpid['valueAsJson']
print "Port %s on %s was removed" % (p, dp)
self.removeLink(dp, p)
self.buildTopos()
def linkup(self, linkad):
l_up = json.loads(linkad['valueAsJson'])
print "Link up %s" % l_up
l_up['id'] = self.nextid()
self.links.append(l_up)
self.buildTopos()
def linkdown(self, linkad):
l_down = json.loads(linkad['valueAsJson'])
print "link down %s" % l_down
try:
self.removeFullLink(l_down)
self.buildTopos()
except Exception as inst:
print "Error while removing link: %s" % inst
def slice(self,slicename):
if slicename in self.topos:
return self.topos[slicename]
else:
return None
def startservers(self):
server = SimpleJSONRPCServer((IP, self.serverport))
server.register_function(self.deviceConnected)
server.register_function(self.deviceDisconnected)
server.register_function(self.portAdded)
server.register_function(self.portRemoved)
server.register_function(self.linkup)
server.register_function(self.linkdown)
try:
self.fvthread = threading.Thread(target=server.serve_forever)
print "Start callback server"
self.fvthread.start()
self.httpd.serve_forever()
except KeyboardInterrupt:
server.shutdown()
self.unregisterFromFV()
def unregisterFromFV(self):
self.fv.deregisterTopologyEventCallback("deviceConnected", "DEVICE_CONNECTED")
self.fv.deregisterTopologyEventCallback("deviceDisconnected", "DEVICE_DISCONNECTED")
self.fv.deregisterTopologyEventCallback("portAdded", "PORT_ADDED")
self.fv.deregisterTopologyEventCallback("portRemoved", "PORT_REMOVED")
self.fv.deregisterTopologyEventCallback("linkup", "LINK_UP")
self.fv.deregisterTopologyEventCallback("linkdown", "LINK_DOWN")
self.httpd.shutdown()
print "Cleanup done!"
class FVHTTPHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
def send_resp(self, data):
self.send_response(200)
self.send_header("Content-type", "application/json")
self.end_headers()
self.wfile.write(json.dumps(data, indent=2))
def do_GET(self):
if self.path.startswith("/slice"):
resp = self.fv().slice(self.path.split("/")[-1])
if resp != None:
self.send_resp(resp)
else:
self.send_response(404)
return
if self.path.startswith("/listslices"):
self.send_resp(self.fv().slices)
return
SimpleHTTPServer.SimpleHTTPRequestHandler.do_GET(self)
def do_POST(self):
pass
def fv(self):
pass
class TCPServer(SocketServer.TCPServer):
allow_reuse_address = True
if __name__ == "__main__":
fv2d3()