From beb05a71c84849d813bee389576d67b1f63f2ebb Mon Sep 17 00:00:00 2001
From: Bob Lantz <rlantz@cs.stanford.edu>
Date: Fri, 23 Mar 2012 18:17:49 -0700
Subject: [PATCH] Move dumpNetConnections to util() because it's useful!

---
 mininet/cli.py  | 15 ++-------------
 mininet/util.py | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/mininet/cli.py b/mininet/cli.py
index 058a330..6beb047 100644
--- a/mininet/cli.py
+++ b/mininet/cli.py
@@ -33,7 +33,7 @@ import sys
 
 from mininet.log import info, output, error
 from mininet.term import makeTerms
-from mininet.util import quietRun, isShellBuiltin
+from mininet.util import quietRun, isShellBuiltin, dumpNodeConnections
 
 class CLI( Cmd ):
     "Simple command-line interface to talk to nodes."
@@ -109,21 +109,10 @@ class CLI( Cmd ):
         nodes = ' '.join( [ node.name for node in sorted( self.nodelist ) ] )
         output( 'available nodes are: \n%s\n' % nodes )
 
-    @staticmethod
-    def dump_connections( node ):
-        "Helper method: dump connections to node"
-        for intf in node.intfList():
-            if intf.link:
-                intfs = [ intf.link.intf1, intf.link.intf2 ]
-                intfs.remove( intf )
-                output( ' %s' % intfs[ 0 ].node )
 
     def do_net( self, _line ):
         "List network connections."
-        for node in self.nodelist:
-            output( node.name, '<->' )
-            self.dump_connections( node )
-            output( '\n' )
+        dumpNodeConnections( self.nodelist )
 
     def do_sh( self, line ):
         "Run an external shell command"
diff --git a/mininet/util.py b/mininet/util.py
index bd61fae..04a91cb 100644
--- a/mininet/util.py
+++ b/mininet/util.py
@@ -187,6 +187,31 @@ def moveIntf( intf, node, printError=False, retries=3, delaySecs=0.001 ):
        printError: if true, print error"""
     retry( retries, delaySecs, moveIntfNoRetry, intf, node, printError )
 
+# Support for dumping network
+
+def dumpNodeConnections( nodes ):
+    "Dump connections to/from nodes."
+
+    def dumpConnections( node ):
+        "Helper function: dump connections to node"
+        for intf in node.intfList():
+            output( ' %s:' % intf )
+            if intf.link:
+                intfs = [ intf.link.intf1, intf.link.intf2 ]
+                intfs.remove( intf )
+                output( intfs[ 0 ] )
+            else:
+                output( ' ' )
+
+    for node in nodes:
+        output( node.name )
+        dumpConnections( node )
+        output( '\n' )
+
+def dumpNetConnections( net ):
+    "Dump connections in network"
+    nodes = net.controllers + net.switches + net.hosts
+    dumpNodeConnections( nodes )
 
 # IP and Mac address formatting and parsing