utils/tracers/ndn-l3-rate-tracer.cpp - ndnSIM - Gitiles

 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
  * Copyright (c) 2011-2016  Regents of the University of California.
  *
  * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
  * contributors.
  *
  * ndnSIM is free software: you can redistribute it and/or modify it under the terms
  * of the GNU General Public License as published by the Free Software Foundation,
  * either version 3 of the License, or (at your option) any later version.
  *
  * ndnSIM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  * PURPOSE.  See the GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  **/

 #include "ndn-l3-rate-tracer.hpp"
 #include "ns3/node.h"
 #include "ns3/packet.h"
 #include "ns3/config.h"
 #include "ns3/callback.h"
 #include "ns3/simulator.h"
 #include "ns3/log.h"
 #include "ns3/node-list.h"
 #include "ns3/ndnSIM/model/ndn-l3-protocol.hpp"

 #include "daemon/table/pit-entry.hpp"

 #include <fstream>
 #include <boost/lexical_cast.hpp>

 NS_LOG_COMPONENT_DEFINE("ndn.L3RateTracer");

 namespace ns3 {
 namespace ndn {

 static std::list<std::tuple<shared_ptr<std::ostream>, std::list<Ptr<L3RateTracer>>>>
   g_tracers;

 void
 L3RateTracer::Destroy()
 {
   g_tracers.clear();
 }

 void
 L3RateTracer::InstallAll(const std::string& file, Time averagingPeriod /* = Seconds (0.5)*/)
 {
   std::list<Ptr<L3RateTracer>> tracers;
   shared_ptr<std::ostream> outputStream;
   if (file != "-") {
     shared_ptr<std::ofstream> os(new std::ofstream());
     os->open(file.c_str(), std::ios_base::out | std::ios_base::trunc);

     if (!os->is_open()) {
       NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
       return;
     }

     outputStream = os;
   }
   else {
     outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
   }

   for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) {
     Ptr<L3RateTracer> trace = Install(*node, outputStream, averagingPeriod);
     tracers.push_back(trace);
   }

   if (tracers.size() > 0) {
     // *m_l3RateTrace << "# "; // not necessary for R's read.table
     tracers.front()->PrintHeader(*outputStream);
     *outputStream << "\n";
   }

   g_tracers.push_back(std::make_tuple(outputStream, tracers));
 }

 void
 L3RateTracer::Install(const NodeContainer& nodes, const std::string& file,
                       Time averagingPeriod /* = Seconds (0.5)*/)
 {
   using namespace boost;
   using namespace std;

   std::list<Ptr<L3RateTracer>> tracers;
   shared_ptr<std::ostream> outputStream;
   if (file != "-") {
     shared_ptr<std::ofstream> os(new std::ofstream());
     os->open(file.c_str(), std::ios_base::out | std::ios_base::trunc);

     if (!os->is_open()) {
       NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
       return;
     }

     outputStream = os;
   }
   else {
     outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
   }

   for (NodeContainer::Iterator node = nodes.Begin(); node != nodes.End(); node++) {
     Ptr<L3RateTracer> trace = Install(*node, outputStream, averagingPeriod);
     tracers.push_back(trace);
   }

   if (tracers.size() > 0) {
     // *m_l3RateTrace << "# "; // not necessary for R's read.table
     tracers.front()->PrintHeader(*outputStream);
     *outputStream << "\n";
   }

   g_tracers.push_back(std::make_tuple(outputStream, tracers));
 }

 void
 L3RateTracer::Install(Ptr<Node> node, const std::string& file,
                       Time averagingPeriod /* = Seconds (0.5)*/)
 {
   using namespace boost;
   using namespace std;

   std::list<Ptr<L3RateTracer>> tracers;
   shared_ptr<std::ostream> outputStream;
   if (file != "-") {
     shared_ptr<std::ofstream> os(new std::ofstream());
     os->open(file.c_str(), std::ios_base::out | std::ios_base::trunc);

     if (!os->is_open()) {
       NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
       return;
     }

     outputStream = os;
   }
   else {
     outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
   }

   Ptr<L3RateTracer> trace = Install(node, outputStream, averagingPeriod);
   tracers.push_back(trace);

   if (tracers.size() > 0) {
     // *m_l3RateTrace << "# "; // not necessary for R's read.table
     tracers.front()->PrintHeader(*outputStream);
     *outputStream << "\n";
   }

   g_tracers.push_back(std::make_tuple(outputStream, tracers));
 }

 Ptr<L3RateTracer>
 L3RateTracer::Install(Ptr<Node> node, shared_ptr<std::ostream> outputStream,
                       Time averagingPeriod /* = Seconds (0.5)*/)
 {
   NS_LOG_DEBUG("Node: " << node->GetId());

   Ptr<L3RateTracer> trace = Create<L3RateTracer>(outputStream, node);
   trace->SetAveragingPeriod(averagingPeriod);

   return trace;
 }

 L3RateTracer::L3RateTracer(shared_ptr<std::ostream> os, Ptr<Node> node)
   : L3Tracer(node)
   , m_os(os)
 {
   SetAveragingPeriod(Seconds(1.0));
 }

 L3RateTracer::L3RateTracer(shared_ptr<std::ostream> os, const std::string& node)
   : L3Tracer(node)
   , m_os(os)
 {
   SetAveragingPeriod(Seconds(1.0));
 }

 L3RateTracer::~L3RateTracer()
 {
   m_printEvent.Cancel();
 }

 void
 L3RateTracer::SetAveragingPeriod(const Time& period)
 {
   m_period = period;
   m_printEvent.Cancel();
   m_printEvent = Simulator::Schedule(m_period, &L3RateTracer::PeriodicPrinter, this);
 }

 void
 L3RateTracer::PeriodicPrinter()
 {
   Print(*m_os);
   Reset();

   m_printEvent = Simulator::Schedule(m_period, &L3RateTracer::PeriodicPrinter, this);
 }

 void
 L3RateTracer::PrintHeader(std::ostream& os) const
 {
   os << "Time"
      << "\t"

      << "Node"
      << "\t"
      << "FaceId"
      << "\t"
      << "FaceDescr"
      << "\t"

      << "Type"
      << "\t"
      << "Packets"
      << "\t"
      << "Kilobytes"
      << "\t"
      << "PacketRaw"
      << "\t"
      << "KilobytesRaw";
 }

 void
 L3RateTracer::Reset()
 {
   for (auto& stats : m_stats) {
     std::get<0>(stats.second).Reset();
     std::get<1>(stats.second).Reset();
   }
 }

 const double alpha = 0.8;

 #define STATS(INDEX) std::get<INDEX>(stats.second)
 #define RATE(INDEX, fieldName) STATS(INDEX).fieldName / m_period.ToDouble(Time::S)

 #define PRINTER(printName, fieldName)                                                              \
   STATS(2).fieldName =                                                                             \
     /*new value*/ alpha * RATE(0, fieldName) + /*old value*/ (1 - alpha) * STATS(2).fieldName;     \
   STATS(3).fieldName = /*new value*/ alpha * RATE(1, fieldName) / 1024.0                           \
                        + /*old value*/ (1 - alpha) * STATS(3).fieldName;                           \
                                                                                                    \
   os << time.ToDouble(Time::S) << "\t" << m_node << "\t";                                          \
   if (stats.first != nfd::face::INVALID_FACEID) {                                                  \
     os << stats.first << "\t";                                                                     \
     NS_ASSERT(m_faceInfos.find(stats.first) != m_faceInfos.end());                                 \
     os << m_faceInfos.find(stats.first)->second << "\t";                                           \
   }                                                                                                \
   else {                                                                                           \
     os << "-1\tall\t";                                                                             \
   }                                                                                                \
   os << printName << "\t" << STATS(2).fieldName << "\t" << STATS(3).fieldName << "\t"              \
      << STATS(0).fieldName << "\t" << STATS(1).fieldName / 1024.0 << "\n";

 void
 L3RateTracer::Print(std::ostream& os) const
 {
   Time time = Simulator::Now();

   for (auto& stats : m_stats) {
     if (stats.first == nfd::face::INVALID_FACEID)
       continue;

     PRINTER("InInterests", m_inInterests);
     PRINTER("OutInterests", m_outInterests);

     PRINTER("InData", m_inData);
     PRINTER("OutData", m_outData);

     PRINTER("InNacks", m_inNack);
     PRINTER("OutNacks", m_outNack);

     PRINTER("InSatisfiedInterests", m_satisfiedInterests);
     PRINTER("InTimedOutInterests", m_timedOutInterests);

     PRINTER("OutSatisfiedInterests", m_outSatisfiedInterests);
     PRINTER("OutTimedOutInterests", m_outTimedOutInterests);
   }

   {
     auto i = m_stats.find(nfd::face::INVALID_FACEID);
     if (i != m_stats.end()) {
       auto& stats = *i;
       PRINTER("SatisfiedInterests", m_satisfiedInterests);
       PRINTER("TimedOutInterests", m_timedOutInterests);
     }
   }
 }

 void
 L3RateTracer::OutInterests(const Interest& interest, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_outInterests++;
   if (interest.hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_outInterests +=
       interest.wireEncode().size();
   }
 }

 void
 L3RateTracer::InInterests(const Interest& interest, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_inInterests++;
   if (interest.hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_inInterests +=
       interest.wireEncode().size();
   }
 }

 void
 L3RateTracer::OutData(const Data& data, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_outData++;
   if (data.hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_outData +=
       data.wireEncode().size();
   }
 }

 void
 L3RateTracer::InData(const Data& data, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_inData++;
   if (data.hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_inData +=
       data.wireEncode().size();
   }
 }

 void
 L3RateTracer::OutNack(const lp::Nack& nack, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_outNack++;
   if (nack.getInterest().hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_outNack +=
       nack.getInterest().wireEncode().size();
   }
 }

 void
 L3RateTracer::InNack(const lp::Nack& nack, const Face& face)
 {
   AddInfo(face);
   std::get<0>(m_stats[face.getId()]).m_inNack++;
   if (nack.getInterest().hasWire()) {
     std::get<1>(m_stats[face.getId()]).m_inNack +=
       nack.getInterest().wireEncode().size();
   }
 }

 void
 L3RateTracer::SatisfiedInterests(const nfd::pit::Entry& entry, const Face&, const Data&)
 {
   std::get<0>(m_stats[nfd::face::INVALID_FACEID]).m_satisfiedInterests++;
   // no "size" stats

   for (const auto& in : entry.getInRecords()) {
     AddInfo(in.getFace());
     std::get<0>(m_stats[(in.getFace()).getId()]).m_satisfiedInterests ++;
   }

   for (const auto& out : entry.getOutRecords()) {
     AddInfo(out.getFace());
     std::get<0>(m_stats[(out.getFace()).getId()]).m_outSatisfiedInterests ++;
   }
 }

 void
 L3RateTracer::TimedOutInterests(const nfd::pit::Entry& entry)
 {
   std::get<0>(m_stats[nfd::face::INVALID_FACEID]).m_timedOutInterests++;
   // no "size" stats

   for (const auto& in : entry.getInRecords()) {
     AddInfo(in.getFace());
     std::get<0>(m_stats[(in.getFace()).getId()]).m_timedOutInterests++;
   }

   for (const auto& out : entry.getOutRecords()) {
     AddInfo(out.getFace());
     std::get<0>(m_stats[(out.getFace()).getId()]).m_outTimedOutInterests++;
   }
 }

 void
 L3RateTracer::AddInfo(const Face& face)
 {
   if (m_faceInfos.find(face.getId()) == m_faceInfos.end()) {
     m_faceInfos.insert(make_pair(face.getId(), boost::lexical_cast<std::string>(face.getLocalUri())));
   }
 }

 } // namespace ndn
 } // namespace ns3
	/* -- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -- */
	/**
	* Copyright (c) 2011-2016 Regents of the University of California.
	*
	* This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
	* contributors.
	*
	* ndnSIM is free software: you can redistribute it and/or modify it under the terms
	* of the GNU General Public License as published by the Free Software Foundation,
	* either version 3 of the License, or (at your option) any later version.
	*
	* ndnSIM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
	* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
	* PURPOSE. See the GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along with
	* ndnSIM, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
	**/

	#include "ndn-l3-rate-tracer.hpp"
	#include "ns3/node.h"
	#include "ns3/packet.h"
	#include "ns3/config.h"
	#include "ns3/callback.h"
	#include "ns3/simulator.h"
	#include "ns3/log.h"
	#include "ns3/node-list.h"
	#include "ns3/ndnSIM/model/ndn-l3-protocol.hpp"

	#include "daemon/table/pit-entry.hpp"

	#include <fstream>
	#include <boost/lexical_cast.hpp>

	NS_LOG_COMPONENT_DEFINE("ndn.L3RateTracer");

	namespace ns3 {
	namespace ndn {

	static std::list<std::tuple<shared_ptr<std::ostream>, std::list<Ptr<L3RateTracer>>>>
	g_tracers;

	void
	L3RateTracer::Destroy()
	{
	g_tracers.clear();
	}

	void
	L3RateTracer::InstallAll(const std::string& file, Time averagingPeriod /* = Seconds (0.5)*/)
	{
	std::list<Ptr<L3RateTracer>> tracers;
	shared_ptr<std::ostream> outputStream;
	if (file != "-") {
	shared_ptr<std::ofstream> os(new std::ofstream());
	os->open(file.c_str(), std::ios_base::out \| std::ios_base::trunc);

	if (!os->is_open()) {
	NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
	return;
	}

	outputStream = os;
	}
	else {
	outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
	}

	for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) {
	Ptr<L3RateTracer> trace = Install(*node, outputStream, averagingPeriod);
	tracers.push_back(trace);
	}

	if (tracers.size() > 0) {
	// *m_l3RateTrace << "# "; // not necessary for R's read.table
	tracers.front()->PrintHeader(*outputStream);
	*outputStream << "\n";
	}

	g_tracers.push_back(std::make_tuple(outputStream, tracers));
	}

	void
	L3RateTracer::Install(const NodeContainer& nodes, const std::string& file,
	Time averagingPeriod /* = Seconds (0.5)*/)
	{
	using namespace boost;
	using namespace std;

	std::list<Ptr<L3RateTracer>> tracers;
	shared_ptr<std::ostream> outputStream;
	if (file != "-") {
	shared_ptr<std::ofstream> os(new std::ofstream());
	os->open(file.c_str(), std::ios_base::out \| std::ios_base::trunc);

	if (!os->is_open()) {
	NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
	return;
	}

	outputStream = os;
	}
	else {
	outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
	}

	for (NodeContainer::Iterator node = nodes.Begin(); node != nodes.End(); node++) {
	Ptr<L3RateTracer> trace = Install(*node, outputStream, averagingPeriod);
	tracers.push_back(trace);
	}

	if (tracers.size() > 0) {
	// *m_l3RateTrace << "# "; // not necessary for R's read.table
	tracers.front()->PrintHeader(*outputStream);
	*outputStream << "\n";
	}

	g_tracers.push_back(std::make_tuple(outputStream, tracers));
	}

	void
	L3RateTracer::Install(Ptr<Node> node, const std::string& file,
	Time averagingPeriod /* = Seconds (0.5)*/)
	{
	using namespace boost;
	using namespace std;

	std::list<Ptr<L3RateTracer>> tracers;
	shared_ptr<std::ostream> outputStream;
	if (file != "-") {
	shared_ptr<std::ofstream> os(new std::ofstream());
	os->open(file.c_str(), std::ios_base::out \| std::ios_base::trunc);

	if (!os->is_open()) {
	NS_LOG_ERROR("File " << file << " cannot be opened for writing. Tracing disabled");
	return;
	}

	outputStream = os;
	}
	else {
	outputStream = shared_ptr<std::ostream>(&std::cout, std::bind([]{}));
	}

	Ptr<L3RateTracer> trace = Install(node, outputStream, averagingPeriod);
	tracers.push_back(trace);

	if (tracers.size() > 0) {
	// *m_l3RateTrace << "# "; // not necessary for R's read.table
	tracers.front()->PrintHeader(*outputStream);
	*outputStream << "\n";
	}

	g_tracers.push_back(std::make_tuple(outputStream, tracers));
	}

	Ptr<L3RateTracer>
	L3RateTracer::Install(Ptr<Node> node, shared_ptr<std::ostream> outputStream,
	Time averagingPeriod /* = Seconds (0.5)*/)
	{
	NS_LOG_DEBUG("Node: " << node->GetId());

	Ptr<L3RateTracer> trace = Create<L3RateTracer>(outputStream, node);
	trace->SetAveragingPeriod(averagingPeriod);

	return trace;
	}

	L3RateTracer::L3RateTracer(shared_ptr<std::ostream> os, Ptr<Node> node)
	: L3Tracer(node)
	, m_os(os)
	{
	SetAveragingPeriod(Seconds(1.0));
	}

	L3RateTracer::L3RateTracer(shared_ptr<std::ostream> os, const std::string& node)
	: L3Tracer(node)
	, m_os(os)
	{
	SetAveragingPeriod(Seconds(1.0));
	}

	L3RateTracer::~L3RateTracer()
	{
	m_printEvent.Cancel();
	}

	void
	L3RateTracer::SetAveragingPeriod(const Time& period)
	{
	m_period = period;
	m_printEvent.Cancel();
	m_printEvent = Simulator::Schedule(m_period, &L3RateTracer::PeriodicPrinter, this);
	}

	void
	L3RateTracer::PeriodicPrinter()
	{
	Print(*m_os);
	Reset();

	m_printEvent = Simulator::Schedule(m_period, &L3RateTracer::PeriodicPrinter, this);
	}

	void
	L3RateTracer::PrintHeader(std::ostream& os) const
	{
	os << "Time"
	<< "\t"

	<< "Node"
	<< "\t"
	<< "FaceId"
	<< "\t"
	<< "FaceDescr"
	<< "\t"

	<< "Type"
	<< "\t"
	<< "Packets"
	<< "\t"
	<< "Kilobytes"
	<< "\t"
	<< "PacketRaw"
	<< "\t"
	<< "KilobytesRaw";
	}

	void
	L3RateTracer::Reset()
	{
	for (auto& stats : m_stats) {
	std::get<0>(stats.second).Reset();
	std::get<1>(stats.second).Reset();
	}
	}

	const double alpha = 0.8;

	#define STATS(INDEX) std::get<INDEX>(stats.second)
	#define RATE(INDEX, fieldName) STATS(INDEX).fieldName / m_period.ToDouble(Time::S)

	#define PRINTER(printName, fieldName) \
	STATS(2).fieldName = \
	/new value/ alpha * RATE(0, fieldName) + /old value/ (1 - alpha) * STATS(2).fieldName; \
	STATS(3).fieldName = /new value/ alpha * RATE(1, fieldName) / 1024.0 \
	+ /old value/ (1 - alpha) * STATS(3).fieldName; \
	\
	os << time.ToDouble(Time::S) << "\t" << m_node << "\t"; \
	if (stats.first != nfd::face::INVALID_FACEID) { \
	os << stats.first << "\t"; \
	NS_ASSERT(m_faceInfos.find(stats.first) != m_faceInfos.end()); \
	os << m_faceInfos.find(stats.first)->second << "\t"; \
	} \
	else { \
	os << "-1\tall\t"; \
	} \
	os << printName << "\t" << STATS(2).fieldName << "\t" << STATS(3).fieldName << "\t" \
	<< STATS(0).fieldName << "\t" << STATS(1).fieldName / 1024.0 << "\n";

	void
	L3RateTracer::Print(std::ostream& os) const
	{
	Time time = Simulator::Now();

	for (auto& stats : m_stats) {
	if (stats.first == nfd::face::INVALID_FACEID)
	continue;

	PRINTER("InInterests", m_inInterests);
	PRINTER("OutInterests", m_outInterests);

	PRINTER("InData", m_inData);
	PRINTER("OutData", m_outData);

	PRINTER("InNacks", m_inNack);
	PRINTER("OutNacks", m_outNack);

	PRINTER("InSatisfiedInterests", m_satisfiedInterests);
	PRINTER("InTimedOutInterests", m_timedOutInterests);

	PRINTER("OutSatisfiedInterests", m_outSatisfiedInterests);
	PRINTER("OutTimedOutInterests", m_outTimedOutInterests);
	}

	{
	auto i = m_stats.find(nfd::face::INVALID_FACEID);
	if (i != m_stats.end()) {
	auto& stats = *i;
	PRINTER("SatisfiedInterests", m_satisfiedInterests);
	PRINTER("TimedOutInterests", m_timedOutInterests);
	}
	}
	}

	void
	L3RateTracer::OutInterests(const Interest& interest, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_outInterests++;
	if (interest.hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_outInterests +=
	interest.wireEncode().size();
	}
	}

	void
	L3RateTracer::InInterests(const Interest& interest, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_inInterests++;
	if (interest.hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_inInterests +=
	interest.wireEncode().size();
	}
	}

	void
	L3RateTracer::OutData(const Data& data, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_outData++;
	if (data.hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_outData +=
	data.wireEncode().size();
	}
	}

	void
	L3RateTracer::InData(const Data& data, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_inData++;
	if (data.hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_inData +=
	data.wireEncode().size();
	}
	}

	void
	L3RateTracer::OutNack(const lp::Nack& nack, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_outNack++;
	if (nack.getInterest().hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_outNack +=
	nack.getInterest().wireEncode().size();
	}
	}

	void
	L3RateTracer::InNack(const lp::Nack& nack, const Face& face)
	{
	AddInfo(face);
	std::get<0>(m_stats[face.getId()]).m_inNack++;
	if (nack.getInterest().hasWire()) {
	std::get<1>(m_stats[face.getId()]).m_inNack +=
	nack.getInterest().wireEncode().size();
	}
	}

	void
	L3RateTracer::SatisfiedInterests(const nfd::pit::Entry& entry, const Face&, const Data&)
	{
	std::get<0>(m_stats[nfd::face::INVALID_FACEID]).m_satisfiedInterests++;
	// no "size" stats

	for (const auto& in : entry.getInRecords()) {
	AddInfo(in.getFace());
	std::get<0>(m_stats[(in.getFace()).getId()]).m_satisfiedInterests ++;
	}

	for (const auto& out : entry.getOutRecords()) {
	AddInfo(out.getFace());
	std::get<0>(m_stats[(out.getFace()).getId()]).m_outSatisfiedInterests ++;
	}
	}

	void
	L3RateTracer::TimedOutInterests(const nfd::pit::Entry& entry)
	{
	std::get<0>(m_stats[nfd::face::INVALID_FACEID]).m_timedOutInterests++;
	// no "size" stats

	for (const auto& in : entry.getInRecords()) {
	AddInfo(in.getFace());
	std::get<0>(m_stats[(in.getFace()).getId()]).m_timedOutInterests++;
	}

	for (const auto& out : entry.getOutRecords()) {
	AddInfo(out.getFace());
	std::get<0>(m_stats[(out.getFace()).getId()]).m_outTimedOutInterests++;
	}
	}

	void
	L3RateTracer::AddInfo(const Face& face)
	{
	if (m_faceInfos.find(face.getId()) == m_faceInfos.end()) {
	m_faceInfos.insert(make_pair(face.getId(), boost::lexical_cast<std::string>(face.getLocalUri())));
	}
	}

	} // namespace ndn
	} // namespace ns3