mgmt: encode/decode CS Information Dataset

refs #4219

Change-Id: Ia51b455fc9b16f8f3c468de2847ced6d73a87bdc
diff --git a/src/mgmt/nfd/cs-info.hpp b/src/mgmt/nfd/cs-info.hpp
new file mode 100644
index 0000000..0b9ad0a
--- /dev/null
+++ b/src/mgmt/nfd/cs-info.hpp
@@ -0,0 +1,104 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2017 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library 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.
+ *
+ * ndn-cxx library 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 ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_MGMT_NFD_CS_INFO_HPP
+#define NDN_MGMT_NFD_CS_INFO_HPP
+
+#include "../../encoding/block.hpp"
+
+namespace ndn {
+namespace nfd {
+
+/**
+ * \ingroup management
+ * \brief represents the CS Information dataset
+ * \sa https://redmine.named-data.net/projects/nfd/wiki/CsMgmt#CS-Information-Dataset
+ */
+class CsInfo
+{
+public:
+  class Error : public tlv::Error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : tlv::Error(what)
+    {
+    }
+  };
+
+  CsInfo();
+
+  explicit
+  CsInfo(const Block& block);
+
+  template<encoding::Tag TAG>
+  size_t
+  wireEncode(EncodingImpl<TAG>& encoder) const;
+
+  const Block&
+  wireEncode() const;
+
+  void
+  wireDecode(const Block& wire);
+
+  uint64_t
+  getNHits() const
+  {
+    return m_nHits;
+  }
+
+  CsInfo&
+  setNHits(uint64_t nHits);
+
+  uint64_t
+  getNMisses() const
+  {
+    return m_nMisses;
+  }
+
+  CsInfo&
+  setNMisses(uint64_t nMisses);
+
+private:
+  uint64_t m_nHits;
+  uint64_t m_nMisses;
+  mutable Block m_wire;
+};
+
+NDN_CXX_DECLARE_WIRE_ENCODE_INSTANTIATIONS(CsInfo);
+
+bool
+operator==(const CsInfo& a, const CsInfo& b);
+
+inline bool
+operator!=(const CsInfo& a, const CsInfo& b)
+{
+  return !(a == b);
+}
+
+std::ostream&
+operator<<(std::ostream& os, const CsInfo& status);
+
+} // namespace nfd
+} // namespace ndn
+
+#endif // NDN_MGMT_NFD_CS_INFO_HPP