face: Refactor Face as LinkService+Transport
LpFace: new Face implementation
LpFaceWrapper: allows new Face system to work with old Face system
Eventually, LpFace will be renamed to Face and LpFaceWrapper will be removed.
refs #3088 #3179
Change-Id: Ia4ad7c84631e65b444d4f24e1d7593392927c8db
diff --git a/daemon/face/face-log.hpp b/daemon/face/face-log.hpp
new file mode 100644
index 0000000..6e0b3fd
--- /dev/null
+++ b/daemon/face/face-log.hpp
@@ -0,0 +1,93 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2015, 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/>.
+ */
+
+#ifndef NFD_DAEMON_FACE_FACE_LOG_HPP
+#define NFD_DAEMON_FACE_FACE_LOG_HPP
+
+#include "core/logger.hpp"
+
+namespace nfd {
+namespace face {
+
+/** \brief for internal use by FaceLogging macros
+ *
+ * FaceLogHelper wraps a Face, LinkService, or Transport object.
+ *
+ * std::ostream& operator<<(std::ostream& os, const FaceLogHelper<T>& flh)
+ * should be specialized to print "[id=888,local=scheme://local/uri,remote=scheme://remote/uri] "
+ * which appears as part of the log message.
+ */
+template<typename T>
+class FaceLogHelper
+{
+public:
+ explicit
+ FaceLogHelper(const T& obj1)
+ : obj(obj1)
+ {
+ }
+
+public:
+ const T& obj;
+};
+
+/** \defgroup FaceLogging Face logging macros
+ *
+ * These macros augment the log message with some face-specific information,
+ * such as the face ID, that are useful to distinguish which face produced the
+ * message. It is strongly recommended to use these macros instead of the
+ * generic ones for all logging inside Face, LinkService, Transport subclasses.
+ * @{
+ */
+
+#define NFD_LOG_FACE(level, msg) NFD_LOG_##level( \
+ ::nfd::face::FaceLogHelper< \
+ typename std::remove_cv< \
+ typename std::remove_reference<decltype(*this)>::type \
+ >::type \
+ >(*this) \
+ << msg)
+
+/** \brief Log a message at TRACE level */
+#define NFD_LOG_FACE_TRACE(msg) NFD_LOG_FACE(TRACE, msg)
+
+/** \brief Log a message at DEBUG level */
+#define NFD_LOG_FACE_DEBUG(msg) NFD_LOG_FACE(DEBUG, msg)
+
+/** \brief Log a message at INFO level */
+#define NFD_LOG_FACE_INFO(msg) NFD_LOG_FACE(INFO, msg)
+
+/** \brief Log a message at WARN level */
+#define NFD_LOG_FACE_WARN(msg) NFD_LOG_FACE(WARN, msg)
+
+/** \brief Log a message at ERROR level */
+#define NFD_LOG_FACE_ERROR(msg) NFD_LOG_FACE(ERROR, msg)
+
+/** @} */
+
+} // namespace face
+} // namespace nfd
+
+#endif // NFD_DAEMON_FACE_FACE_LOG_HPP