Adding StatsTable implementation

Change-Id: Ib2c8cdaddf3b8f91e14ef2be7d76068f37849cca
Refs: #3556
diff --git a/src/stats-table-record.hpp b/src/stats-table-record.hpp
new file mode 100644
index 0000000..59e1ff7
--- /dev/null
+++ b/src/stats-table-record.hpp
@@ -0,0 +1,148 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+* Copyright (c) 2016 Regents of the University of California.
+*
+* This file is part of the nTorrent codebase.
+*
+* nTorrent is free software: you can redistribute it and/or modify it under the
+* terms of the GNU Lesser General Public License as published by the Free Software
+* Foundation, either version 3 of the License, or (at your option) any later version.
+*
+* nTorrent 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 Lesser General Public License for more details.
+*
+* You should have received copies of the GNU General Public License and GNU Lesser
+* General Public License along with nTorrent, e.g., in COPYING.md file. If not, see
+* <http://www.gnu.org/licenses/>.
+*
+* See AUTHORS for complete list of nTorrent authors and contributors.
+*/
+
+#include <ndn-cxx/name.hpp>
+
+namespace ndn {
+namespace ntorrent {
+
+/**
+ * @brief Represents a record of the stats table
+ */
+class StatsTableRecord {
+public:
+  class Error : public std::runtime_error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : std::runtime_error(what)
+    {
+    }
+  };
+
+  /**
+   * @brief Create a new empty record
+   */
+  StatsTableRecord() = default;
+
+  /**
+   * @brief Create a new record
+   * @param recordName The name of this record
+   */
+  StatsTableRecord(const Name& recordName);
+
+  /**
+   * @brief Copy constructor
+   * @param record An StatsTableRecord object
+   */
+  StatsTableRecord(const StatsTableRecord& record);
+
+  ~StatsTableRecord() = default;
+
+  /**
+   * @brief Get the name of a record
+   */
+  const Name&
+  getRecordName() const;
+
+  /**
+   * @brief Get the number of sent interests of a record
+   */
+  uint64_t
+  getRecordSentInterests() const;
+
+  /**
+   * @brief Get the number of received data packets of a record
+   */
+  uint64_t
+  getRecordReceivedData() const;
+
+  /**
+   * @brief Get the success rate of a record
+   */
+  double
+  getRecordSuccessRate() const;
+
+  /**
+   * @brief Increment the number of sent interests for a record
+   */
+  void
+  incrementSentInterests();
+
+  /**
+   * @brief Increment the number of received data packets for a record
+   */
+  void
+  incrementReceivedData();
+
+  /**
+   * @brief Assignment operator
+   */
+  StatsTableRecord&
+  operator=(const StatsTableRecord& other);
+
+private:
+  Name m_recordName;
+  uint64_t m_sentInterests;
+  uint64_t m_receivedData;
+  double m_successRate;
+};
+
+/**
+ * @brief Equality operator
+ */
+bool
+operator==(const StatsTableRecord& lhs, const StatsTableRecord& rhs);
+
+/**
+ * @brief Inequality operator
+ */
+bool
+operator!=(const StatsTableRecord& lhs, const StatsTableRecord& rhs);
+
+inline const Name&
+StatsTableRecord::getRecordName() const
+{
+  return m_recordName;
+}
+
+inline uint64_t
+StatsTableRecord::getRecordSentInterests() const
+{
+  return m_sentInterests;
+}
+
+inline uint64_t
+StatsTableRecord::getRecordReceivedData() const
+{
+  return m_receivedData;
+}
+
+inline double
+StatsTableRecord::getRecordSuccessRate() const
+{
+  return m_successRate;
+}
+
+
+}  // namespace ntorrent
+}  // namespace ndn