Brandon Heller
51270ce4a2
Now, to reference mininet files, use 'import mininet.mininet'. PYTHONPATH mods are no longer required for installation.
51 lines
1.5 KiB
Python
Executable File
51 lines
1.5 KiB
Python
Executable File
#!/usr/bin/python
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"""
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Create a network and run an xterm (connected via screen(1) ) on each
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host. Requires xterm(1) and GNU screen(1).
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"""
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import os, re
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from subprocess import Popen
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from mininet.mininet import init, TreeNet, quietRun
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def makeXterm( node, title ):
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"Run screen on a node, and hook up an xterm."
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title += ': ' + node.name
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if not node.inNamespace: title += ' (root)'
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cmd = [ 'xterm', '-title', title, '-e' ]
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if not node.execed:
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node.cmdPrint( 'screen -dmS ' + node.name )
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cmd += [ 'screen', '-D', '-RR', '-S', node.name ]
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else:
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cmd += [ 'sh', '-c', 'exec tail -f /tmp/' + node.name + '*.log' ]
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return Popen( cmd )
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def cleanUpScreens():
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"Remove moldy old screen sessions."
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r = r'(\d+.[hsc]\d+)'
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output = quietRun( 'screen -ls' ).split( '\n' )
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for line in output:
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m = re.search( r, line )
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if m is not None:
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quietRun( 'screen -S ' + m.group( 1 ) + ' -X kill' )
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def makeXterms( nodes, title ):
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return [ makeXterm( node, title) for node in nodes]
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def xterms( controllers, switches, hosts ):
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cleanUpScreens()
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terms = makeXterms( controllers, 'controller' )
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terms += makeXterms( switches, 'switch' )
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terms += makeXterms( hosts, 'host' )
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# Wait for xterms to exit
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for term in terms:
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os.waitpid( term.pid, 0 )
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cleanUpScreens()
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if __name__ == '__main__':
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init()
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print "Running xterms on", os.environ[ 'DISPLAY' ]
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network = TreeNet( depth=2, fanout=2, kernel=True )
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network.run( xterms )
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