Finalizing PathWeight tracing

Now tracing is moved to CcnxConsumer
diff --git a/model/ccnx-local-face.cc b/model/ccnx-local-face.cc
index 404e38f..f3abba9 100644
--- a/model/ccnx-local-face.cc
+++ b/model/ccnx-local-face.cc
@@ -46,8 +46,6 @@
   static TypeId tid = TypeId ("ns3::CcnxLocalFace")
     .SetParent<CcnxFace> ()
     .SetGroupName ("Ccnx")
-    .AddTraceSource ("PathWeightsTrace", "PathWeightsTrace",
-                    MakeTraceSourceAccessor (&CcnxLocalFace::m_pathWeightsTrace))
     ;
   return tid;
 }
@@ -96,15 +94,6 @@
 CcnxLocalFace::SendImpl (Ptr<Packet> p)
 {
   NS_LOG_FUNCTION (this << p);
-  std::cout << Simulator::Now () << ", " << m_app->GetInstanceTypeId ().GetName () << "\n";
-
-  // Notify trace about path weights vector (e.g., for path-stretch calculation)
-  Ptr<const WeightsPathStretchTag> tag = p->RemovePacketTag<WeightsPathStretchTag> ();
-  if (tag != 0)
-    {
-      m_pathWeightsTrace (tag->GetTotalWeight (), tag->GetSourceNode (), m_app->GetNode ());
-      std::cout << boost::cref(*tag) << "\n";
-    }
 
   try
     {
diff --git a/model/ccnx-local-face.h b/model/ccnx-local-face.h
index 507f8b1..327199d 100644
--- a/model/ccnx-local-face.h
+++ b/model/ccnx-local-face.h
@@ -76,8 +76,6 @@
 
 private:
   Ptr<CcnxApp> m_app;
-  
-  TracedCallback<uint32_t, Ptr<Node>, Ptr<Node> > m_pathWeightsTrace;
 };
 
 std::ostream& operator<< (std::ostream& os, const CcnxLocalFace &localFace);
diff --git a/model/ccnx-path-stretch-tag.cc b/model/ccnx-path-stretch-tag.cc
index b4b29e1..c8fc6dd 100644
--- a/model/ccnx-path-stretch-tag.cc
+++ b/model/ccnx-path-stretch-tag.cc
@@ -50,10 +50,10 @@
 //   return GetTypeId ();
 // }
 
-uint32_t
+uint64_t
 WeightsPathStretchTag::GetTotalWeight () const
 {
-  uint32_t total = 0;
+  uint64_t total = 0;
   for (std::list<NodeWeightPair>::const_iterator info = m_infos.begin (); info != m_infos.end (); info++)
     {
       total += info->weight;
@@ -68,6 +68,13 @@
   return m_infos.front ().node;
 }
 
+Ptr<Node>
+WeightsPathStretchTag::GetDestinationNode () const
+{
+  NS_ASSERT (m_infos.size () > 0);
+  return m_infos.back ().node;
+}
+
 uint32_t WeightsPathStretchTag::GetSerializedSize (void) const
 {
   return 0;
diff --git a/model/ccnx-path-stretch-tag.h b/model/ccnx-path-stretch-tag.h
index 71a4582..644871f 100644
--- a/model/ccnx-path-stretch-tag.h
+++ b/model/ccnx-path-stretch-tag.h
@@ -52,12 +52,15 @@
   void
   AddPathInfo (Ptr<Node> node, uint32_t weight);
 
-  uint32_t
+  uint64_t
   GetTotalWeight () const;
 
   Ptr<Node>
   GetSourceNode () const;
 
+  Ptr<Node>
+  GetDestinationNode () const;
+
   const std::list<NodeWeightPair> &
   GetInfos () const
   { return m_infos; }