diff --git a/src/util/logger.cpp b/src/util/logger.cpp
new file mode 100644
index 0000000..04ad954
--- /dev/null
+++ b/src/util/logger.cpp
@@ -0,0 +1,113 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2016 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.
+ */
+
+#include "logger.hpp"
+
+#include "logging.hpp"
+#include "time.hpp"
+
+#include <cinttypes>
+#include <stdio.h>
+#include <type_traits>
+
+namespace ndn {
+namespace util {
+
+std::ostream&
+operator<<(std::ostream& os, LogLevel level)
+{
+  switch (level) {
+  case LogLevel::FATAL:
+    return os << "FATAL";
+  case LogLevel::NONE:
+    return os << "NONE";
+  case LogLevel::ERROR:
+    return os << "ERROR";
+  case LogLevel::WARN:
+    return os << "WARN";
+  case LogLevel::INFO:
+    return os << "INFO";
+  case LogLevel::DEBUG:
+    return os << "DEBUG";
+  case LogLevel::TRACE:
+    return os << "TRACE";
+  case LogLevel::ALL:
+    return os << "ALL";
+  }
+
+  BOOST_THROW_EXCEPTION(std::invalid_argument("unknown log level " + to_string(static_cast<int>(level))));
+}
+
+LogLevel
+parseLogLevel(const std::string& s)
+{
+  if (s == "FATAL")
+    return LogLevel::FATAL;
+  else if (s == "NONE")
+    return LogLevel::NONE;
+  else if (s == "ERROR")
+    return LogLevel::ERROR;
+  else if (s == "WARN")
+    return LogLevel::WARN;
+  else if (s == "INFO")
+    return LogLevel::INFO;
+  else if (s == "DEBUG")
+    return LogLevel::DEBUG;
+  else if (s == "TRACE")
+    return LogLevel::TRACE;
+  else if (s == "ALL")
+    return LogLevel::ALL;
+
+  BOOST_THROW_EXCEPTION(std::invalid_argument("unrecognized log level '" + s + "'"));
+}
+
+Logger::Logger(const std::string& name)
+  : m_moduleName(name)
+{
+  this->setLevel(LogLevel::NONE);
+  Logging::addLogger(*this);
+}
+
+std::ostream&
+operator<<(std::ostream& os, const LoggerTimestamp&)
+{
+  using namespace ndn::time;
+
+  static const microseconds::rep ONE_SECOND = 1000000;
+  microseconds::rep usecs = duration_cast<microseconds>(
+                            system_clock::now().time_since_epoch()).count();
+
+  // 10 (whole seconds) + '.' + 6 (fraction) + '\0'
+  char buffer[10 + 1 + 6 + 1];
+  BOOST_ASSERT_MSG(usecs / ONE_SECOND <= 9999999999L,
+                   "whole seconds cannot fit in 10 characters");
+
+  static_assert(std::is_same<microseconds::rep, int_least64_t>::value,
+                "PRIdLEAST64 is incompatible with microseconds::rep");
+  // std::snprintf unavailable in some environments <https://redmine.named-data.net/issues/2299>
+  snprintf(buffer, sizeof(buffer), "%" PRIdLEAST64 ".%06" PRIdLEAST64,
+           usecs / ONE_SECOND, usecs % ONE_SECOND);
+
+  return os << buffer;
+}
+
+} // namespace util
+} // namespace ndn