blob: b379a82f1429f258edd4931b8dd7bb0fd0fa760e [file] [log] [blame]
#! /usr/bin/env python
# -*- Mode: python; py-indent-offset: 4; tab-width: 8; indent-tabs-mode: t; -*-
import pprint
import os
import sys
import subprocess
import json
import argparse
import io
import time
from flask import Flask, json, Response, render_template, make_response, request
#
# curl http://127.0.0.1:8080/wm/topology/route/00:00:00:00:00:00:0a:01/1/00:00:00:00:00:00:0a:04/1/json
#
## Global Var ##
ControllerIP="127.0.0.1"
ControllerPort=8080
DEBUG=1
pp = pprint.PrettyPrinter(indent=4)
app = Flask(__name__)
## Worker Functions ##
def log_error(txt):
print '%s' % (txt)
def debug(txt):
if DEBUG:
print '%s' % (txt)
# @app.route("/wm/topology/route/<srcdpid>/<srcport>/<destdpid>/<destport>/json")
#
# Sample output:
# {'dstPort': {'port': {'value': 0}, 'dpid': {'value': '00:00:00:00:00:00:00:02'}}, 'srcPort': {'port': {'value': 0}, 'dpid': {'value': '00:00:00:00:00:00:00:01'}}, 'flowEntries': [{'outPort': {'value': 1}, 'flowEntryErrorState': None, 'flowEntryMatch': None, 'flowEntryActions': None, 'inPort': {'value': 0}, 'flowEntryId': None, 'flowEntryUserState': 'FE_USER_UNKNOWN', 'dpid': {'value': '00:00:00:00:00:00:00:01'}, 'flowEntrySwitchState': 'FE_SWITCH_UNKNOWN'}, {'outPort': {'value': 0}, 'flowEntryErrorState': None, 'flowEntryMatch': None, 'flowEntryActions': None, 'inPort': {'value': 9}, 'flowEntryId': None, 'flowEntryUserState': 'FE_USER_UNKNOWN', 'dpid': {'value': '00:00:00:00:00:00:00:02'}, 'flowEntrySwitchState': 'FE_SWITCH_UNKNOWN'}]}
#
def shortest_path(v1, p1, v2, p2):
try:
command = "curl -s http://%s:%s/wm/topology/route/%s/%s/%s/%s/json" % (ControllerIP, ControllerPort, v1, p1, v2, p2)
debug("shortest_path %s" % command)
result = os.popen(command).read()
debug("result %s" % result)
if len(result) == 0:
print "No Path found"
return;
parsedResult = json.loads(result)
debug("parsed %s" % parsedResult)
except:
log_error("Controller IF has issue")
exit(1)
srcSwitch = parsedResult['srcPort']['dpid']['value'];
srcPort = parsedResult['srcPort']['port']['value'];
dstSwitch = parsedResult['dstPort']['dpid']['value'];
dstPort = parsedResult['dstPort']['port']['value'];
print "DataPath: (src = %s/%s dst = %s/%s)" % (srcSwitch, srcPort, dstSwitch, dstPort);
for f in parsedResult['flowEntries']:
inPort = f['inPort']['value'];
outPort = f['outPort']['value'];
dpid = f['dpid']['value']
print " FlowEntry: (%s, %s, %s)" % (inPort, dpid, outPort)
if __name__ == "__main__":
usage_msg = "Compute the shortest path between two switch ports in the Network MAP\n"
usage_msg = usage_msg + "Usage: %s <src-dpid> <src-port> <dest-dpid> <dest-port>" % (sys.argv[0])
# app.debug = False;
# Usage info
if len(sys.argv) > 1 and (sys.argv[1] == "-h" or sys.argv[1] == "--help"):
print(usage_msg)
exit(0)
# Check arguments
if len(sys.argv) < 5:
log_error(usage_msg)
exit(1)
# Do the work
shortest_path(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4]);