Brad Walker
37 lines
980 B
Python
Executable File
37 lines
980 B
Python
Executable File
#!/usr/bin/python
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"Monitor multiple hosts using popen()/pmonitor()"
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from __future__ import print_function
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from mininet.net import Mininet
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from mininet.topo import SingleSwitchTopo
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from mininet.util import pmonitor
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from time import time
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from signal import SIGINT
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def pmonitorTest( N=3, seconds=10 ):
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"Run pings and monitor multiple hosts using pmonitor"
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topo = SingleSwitchTopo( N )
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net = Mininet( topo )
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net.start()
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hosts = net.hosts
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print( "Starting test..." )
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server = hosts[ 0 ]
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popens = {}
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for h in hosts:
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popens[ h ] = h.popen('ping', server.IP() )
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print( "Monitoring output for", seconds, "seconds" )
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endTime = time() + seconds
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for h, line in pmonitor( popens, timeoutms=500 ):
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if h:
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print( '<%s>: %s' % ( h.name, line ) )
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if time() >= endTime:
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for p in popens.values():
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p.send_signal( SIGINT )
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net.stop()
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if __name__ == '__main__':
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pmonitorTest()
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