commit 5beb35aad175f8a260788aac5e94552d7c903e44
author Alexander Afanasyev <alexander.afanasyev@ucla.edu> Wed Dec 21 16:45:13 2011 -0800
committer Alexander Afanasyev <alexander.afanasyev@ucla.edu> Wed Dec 21 16:45:13 2011 -0800
tree 460c0858c9f175fa84fd1a0c66e671d41ca5f9be
parent 011b8591c0b50ff0f675ee997929b28aa0698f37

Modifying SpringMobilityModel to make all nodes readjust after even one
node changes its position (previously only this node was adjusting itself)

SpringMobilityModel now updates positions based on internal (static) timer

model/rocketfuel-weights-reader.cc

diff --git a/model/rocketfuel-weights-reader.cc b/model/rocketfuel-weights-reader.cc
index 448464e..f6895fa 100644
--- a/model/rocketfuel-weights-reader.cc
+++ b/model/rocketfuel-weights-reader.cc
@@ -39,8 +39,7 @@
 #include "ns3/uinteger.h"
 #include "ns3/ipv4-address.h"
 
-#include "ns3/constant-position-mobility-model.h"
-#include "ns3/random-variable.h"
+#include "ns3/mobility-model.h"
 
 #include <regex.h>
 
@@ -78,14 +77,16 @@
 NodeContainer
 RocketfuelWeightsReader::Read ()
 {
+  if (m_inputType == POSITIONS)
+    return AnnotatedTopologyReader::Read ();
+  
   ifstream topgen;
   topgen.open (GetFileName ().c_str ());
-  NodeContainer nodes;
         
   if ( !topgen.is_open () )
     {
       NS_LOG_ERROR ("Cannot open file " << GetFileName () << " for reading");
-      return nodes;
+      return m_nodes;
     }
 
   map<string, set<string> > processedLinks; // to eliminate duplications
@@ -117,14 +118,12 @@
       if (fromNode == 0)
         {
           fromNode = CreateNode (from);
-          nodes.Add (fromNode);
         }
 
       Ptr<Node> toNode   = Names::Find<Node> (m_path, to);
       if (toNode == 0)
         {
           toNode = CreateNode (to);
-          nodes.Add (toNode);
         }
 
       Link *link;
@@ -142,8 +141,8 @@
         {
         case WEIGHTS:
           {
-            double metric = boost::lexical_cast<double> (attribute);
-            link->SetAttribute ("OSPF", boost::lexical_cast<string> (metric*2));
+            uint16_t metric = boost::lexical_cast<uint16_t> (attribute);
+            link->SetAttribute ("OSPF", boost::lexical_cast<string> (metric));
             break;
           }
         case LATENCIES:
@@ -165,9 +164,9 @@
 
   if (!repeatedRun)
     {
-      NS_LOG_INFO ("Rocketfuel topology created with " << nodes.GetN () << " nodes and " << LinksSize () << " links");
+      NS_LOG_INFO ("Rocketfuel topology created with " << m_nodes.GetN () << " nodes and " << LinksSize () << " links");
     }
-  return nodes;
+  return m_nodes;
 }
 
 void
@@ -178,6 +177,23 @@
   SpringMobilityHelper::InstallSprings (LinksBegin (), LinksEnd ());
 }
 
+void
+RocketfuelWeightsReader::SavePositions (const std::string &file) const
+{
+  ofstream os (file.c_str (), ios::trunc);
+  os << "router\n";
+  
+  for (NodeContainer::Iterator node = m_nodes.Begin ();
+       node != m_nodes.End ();
+       node++)
+    {
+      std::string name = Names::FindName (*node);
+      Ptr<MobilityModel> mobility = (*node)->GetObject<MobilityModel> ();
+      Vector position = mobility->GetPosition ();
+
+      os << name << "\t" << "unknown" << "\t" << -position.y << "\t" << position.x << "\n";
+    }
+}
 
 // void
 // RocketfuelWeightsReader::Cheat (NodeContainer &nodes)