src: Implement packet statistics collection

refs: #2955, #2956

Change-Id: I57476a63562dbd378e566ad0280c89ccc5883e3e
diff --git a/src/stats-collector.cpp b/src/stats-collector.cpp
new file mode 100644
index 0000000..cb179ec
--- /dev/null
+++ b/src/stats-collector.cpp
@@ -0,0 +1,52 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  The University of Memphis,
+ *                           Regents of the University of California
+ *
+ * This file is part of NLSR (Named-data Link State Routing).
+ * See AUTHORS.md for complete list of NLSR authors and contributors.
+ *
+ * NLSR 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.
+ *
+ * NLSR 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
+ * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "stats-collector.hpp"
+#include "logger.hpp"
+#include <fstream>
+
+namespace nlsr {
+
+StatsCollector::StatsCollector(Lsdb& lsdb, HelloProtocol& hp)
+  : m_lsdb(lsdb)
+  , m_hp(hp)
+{
+  m_lsaIncrementConn =
+  this->m_lsdb.lsaIncrementSignal.connect(std::bind(&StatsCollector::statsIncrement,
+                                                    this, _1));
+
+  m_helloIncrementConn =
+  this->m_hp.hpIncrementSignal.connect(std::bind(&StatsCollector::statsIncrement,
+                                                 this, _1));
+}
+
+StatsCollector::~StatsCollector()
+{
+  m_lsaIncrementConn.disconnect();
+  m_helloIncrementConn.disconnect();
+}
+
+void
+StatsCollector::statsIncrement(Statistics::PacketType pType)
+{
+  m_stats.increment(pType);
+}
+
+} // namespace nlsr