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October 18, 2019 09:20
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#!/usr/bin/python | |
# -*- coding: utf-8 -*- | |
from mininet.topo import Topo | |
from mininet.net import Mininet | |
from mininet.util import dumpNodeConnections, pmonitor | |
from mininet.log import setLogLevel | |
from mininet.node import Controller, OVSSwitch | |
#from mininet.node import OVSController | |
from signal import SIGINT | |
import math | |
import random | |
import time | |
import threading | |
def thread_client(popens, client, args): | |
popens[client] = \ | |
client.popen(args) | |
def runExperiment( | |
policy, | |
port, | |
device_id, | |
level, | |
): | |
'''Run experiments with n clients and m servers''' | |
#controller = RemoteController() | |
topo = NetworkTopology() | |
net = Mininet(topo, switch=OVSSwitch) | |
net.start() | |
# Get hosts | |
hosts = net.hosts | |
# Separate hosts into clients and servers | |
clients = [] | |
servers = {} | |
i = 0 | |
for host in hosts: | |
# If its a server add to server list | |
# else add to client list | |
if 'server' in host.name: | |
servers[host] = str(int(port)+i) | |
i += 1 | |
else: | |
clients.append(host) | |
#info("*** Testing connections\n") | |
#net.pingAll() | |
popens = {} | |
for server in servers: | |
popens[server] = \ | |
server.popen('java -jar server.jar ' + port + ' ' + policy) | |
time.sleep(15) # Wait 10 seconds for servers to start | |
for client in clients: | |
# Get random server from servers list | |
server = random.choice(servers.items()) | |
args = 'java -jar client.jar ' + str(server[0].IP()) + ' ' + server[1] + ' report ' + device_id + ' ' + level | |
c = threading.Thread(target=thread_client, args=(popens, client, args,))#, daemon=True) | |
endTime = time.time() + 10 # Run for 60 seconds | |
for (h, line) in pmonitor(popens):#, timeoutms=500): | |
if h: | |
with open('times.txt', 'a') as myfile: | |
myfile.write(line) | |
if time.time() >= endTime: | |
for p in popens.values(): | |
p.send_signal(SIGINT) | |
net.stop() | |
# network with n hosts connected to one switch | |
class NetworkTopology(Topo): | |
clients = 10 | |
servers = 2 | |
def __init__(self): | |
# Initialize topology | |
Topo.__init__(self) | |
controller = self.addController('c0') | |
switch = self.addSwitch('s1') | |
for s in range(self.servers): | |
server = self.addHost('server%s' % (s + 1)) | |
self.addLink(server, switch) | |
for c in range(self.clients): | |
client = self.addHost('client%s' % (c + 1)) | |
self.addLink(client, switch) | |
topos = {'mytopo': lambda : NetworkTopology()} | |
if __name__ == '__main__': | |
setLogLevel('info') | |
policy = 'RBIBA' | |
port = '6540' | |
device_id = 'ec5ae996-2b1f-4f85-a168-b3f8e2abf897' | |
level = '2' | |
runExperiment(policy, port, device_id, level) |
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