Changed startup scripts to Check if Cassandra is NOT running on local berkeley db
diff --git a/test-network/mininet/fat_tree.py b/test-network/mininet/fat_tree.py
new file mode 100755
index 0000000..c7e4178
--- /dev/null
+++ b/test-network/mininet/fat_tree.py
@@ -0,0 +1,163 @@
+#!/usr/bin/python
+
+NWID="a"
+CONTROLLER_IP='127.0.0.1'
+
+"""
+Start up a Simple topology
+"""
+from mininet.net import Mininet
+from mininet.node import Controller, RemoteController
+from mininet.log import setLogLevel, info, error, warn, debug
+from mininet.cli import CLI
+from mininet.topo import Topo
+from mininet.util import quietRun
+from mininet.moduledeps import pathCheck
+from mininet.link import Link, TCLink
+
+from sys import exit
+import os.path
+from subprocess import Popen, STDOUT, PIPE
+
+import sys
+
+#import argparse
+
+class MyController( Controller ):
+ def __init__( self, name, ip=CONTROLLER_IP, port=6633, **kwargs):
+ """Init.
+ name: name to give controller
+ ip: the IP address where the remote controller is
+ listening
+ port: the port where the remote controller is listening"""
+ Controller.__init__( self, name, ip=ip, port=port, **kwargs )
+
+ def start( self ):
+ "Overridden to do nothing."
+ return
+
+ def stop( self ):
+ "Overridden to do nothing."
+ return
+
+ def checkListening( self ):
+ "Warn if remote controller is not accessible"
+ listening = self.cmd( "echo A | telnet -e A %s %d" %
+ ( self.ip, self.port ) )
+ if 'Unable' in listening:
+ warn( "Unable to contact the remote controller"
+ " at %s:%d\n" % ( self.ip, self.port ) )
+
+class SDNTopo( Topo ):
+ "SDN Topology"
+
+ def __init__( self, *args, **kwargs ):
+ Topo.__init__( self, *args, **kwargs )
+
+ dist_sw = []
+ aggr_sw = []
+ core_sw = []
+ host = []
+ root = []
+
+ for i in range (4):
+ name_suffix = '%s' % NWID + '0d' + '%02d' % i
+ dpid = '0000' + '0000' + '000' + name_suffix
+ sw = self.addSwitch('sw'+name_suffix, dpid=dpid)
+ dist_sw.append(sw)
+
+ for i in range (4):
+ name_suffix = '%s' % NWID + '0a' + '%02d' % i
+ dpid = '0000' + '0000' + '000' + name_suffix
+ sw = self.addSwitch('sw'+name_suffix, dpid=dpid)
+ aggr_sw.append(sw)
+
+ for i in range (2):
+ name_suffix = '%s' % NWID + '0c' + '%02d' % i
+ dpid = '0000' + '0000' + '000' + name_suffix
+ sw = self.addSwitch('sw' + name_suffix, dpid=dpid)
+ core_sw.append(sw)
+
+ for i in range (8):
+ host.append(self.addHost( 'host%d' % i ))
+
+ for i in range (8):
+ root.append(self.addHost( 'root%d' % i, inNamespace=False ))
+
+ for i in range (8):
+ self.addLink(host[i], dist_sw[int(i/2)])
+
+ for i in range (4):
+ for j in range (int(i/2) * 2, (int(i/2) * 2 + 2)):
+ print 'add link btween dist_sw[%d] -> aggr_sw[%d]' % (i, j)
+ self.addLink(dist_sw[i], aggr_sw[j])
+
+ for i in range (4):
+ for j in range (int(i/4) * 4, int(i/4) * 4 + 2):
+ print 'add link btween aggr_sw[%d] -> core_sw[%d]' % (i, j)
+ self.addLink(aggr_sw[i], core_sw[j])
+
+ for i in range (8):
+ self.addLink(root[i], host[i])
+
+def startsshd( host ):
+ "Start sshd on host"
+ info( '*** Starting sshd\n' )
+ name, intf, ip = host.name, host.defaultIntf(), host.IP()
+ banner = '/tmp/%s.banner' % name
+ host.cmd( 'echo "Welcome to %s at %s" > %s' % ( name, ip, banner ) )
+ host.cmd( '/usr/sbin/sshd -o "Banner %s"' % banner, '-o "UseDNS no"' )
+ info( '***', host.name, 'is running sshd on', intf, 'at', ip, '\n' )
+
+def startsshds ( hosts ):
+ for h in hosts:
+ startsshd( h )
+
+def stopsshd( ):
+ "Stop *all* sshd processes with a custom banner"
+ info( '*** Shutting down stale sshd/Banner processes ',
+ quietRun( "pkill -9 -f Banner" ), '\n' )
+
+def sdnnet(opt):
+ topo = SDNTopo()
+ info( '*** Creating network\n' )
+ net = Mininet( topo=topo, controller=MyController, link=TCLink)
+
+ host = []
+ for i in range (8):
+ host.append(net.get( 'host%d' % i ))
+
+ net.start()
+
+ core_sw = []
+ for i in range (2):
+ name_suffix = '%s' % NWID + '0c' + '%02d' % i
+ net.get('sw' + name_suffix).attach('tap%s0' % NWID)
+
+ for i in range (8):
+ host[i].defaultIntf().setIP('192.168.10.10%d/24' % i)
+
+ root = []
+ for i in range (8):
+ root.append(net.get( 'root%d' % i ))
+
+ for i in range (8):
+ host[i].intf('host%d-eth1' % i).setIP('1.1.%d.1/24' % i)
+ root[i].intf('root%d-eth0' % i).setIP('1.1.%d.2/24' % i)
+
+ stopsshd ()
+ startsshds ( host )
+
+ if opt=="cli":
+ CLI(net)
+ stopsshd()
+ net.stop()
+
+if __name__ == '__main__':
+ setLogLevel( 'info' )
+ if len(sys.argv) == 1:
+ sdnnet("cli")
+ elif len(sys.argv) == 2 and sys.argv[1] == "-n":
+ sdnnet("nocli")
+ else:
+ print "%s [-n]" % sys.argv[0]