mgmt: CS information dataset (hit/miss counters)

refs #4219

Change-Id: If3ede6b3cba3b836e4e3190989c65f13280fa972
diff --git a/daemon/mgmt/cs-manager.cpp b/daemon/mgmt/cs-manager.cpp
new file mode 100644
index 0000000..62c0b8f
--- /dev/null
+++ b/daemon/mgmt/cs-manager.cpp
@@ -0,0 +1,51 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2018,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD 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.
+ *
+ * NFD 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
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cs-manager.hpp"
+#include <ndn-cxx/mgmt/nfd/cs-info.hpp>
+
+namespace nfd {
+
+CsManager::CsManager(Cs& cs, const ForwarderCounters& fwCnt,
+                     Dispatcher& dispatcher, CommandAuthenticator& authenticator)
+  : NfdManagerBase(dispatcher, authenticator, "cs")
+  , m_fwCnt(fwCnt)
+{
+  registerStatusDatasetHandler("info", bind(&CsManager::serveInfo, this, _1, _2, _3));
+}
+
+void
+CsManager::serveInfo(const Name& topPrefix, const Interest& interest,
+                     ndn::mgmt::StatusDatasetContext& context) const
+{
+  ndn::nfd::CsInfo info;
+  info.setNHits(m_fwCnt.nCsHits);
+  info.setNMisses(m_fwCnt.nCsMisses);
+
+  context.append(info.wireEncode());
+  context.end();
+}
+
+} // namespace nfd