diff --git a/ndn-cxx/security/v2/certificate-fetcher-from-network.cpp b/ndn-cxx/security/v2/certificate-fetcher-from-network.cpp
index df816b1..9545f32 100644
--- a/ndn-cxx/security/v2/certificate-fetcher-from-network.cpp
+++ b/ndn-cxx/security/v2/certificate-fetcher-from-network.cpp
@@ -27,7 +27,7 @@
 namespace security {
 namespace v2 {
 
-NDN_LOG_INIT(ndn.security.v2.CertificateFetcher);
+NDN_LOG_INIT(ndn.security.v2.CertificateFetcher.FromNetwork);
 
 #define NDN_LOG_DEBUG_DEPTH(x) NDN_LOG_DEBUG(std::string(state->getDepth() + 1, '>') << " " << x)
 #define NDN_LOG_TRACE_DEPTH(x) NDN_LOG_TRACE(std::string(state->getDepth() + 1, '>') << " " << x)
diff --git a/ndn-cxx/util/logger.cpp b/ndn-cxx/util/logger.cpp
index 5f6c2de..ee944dd 100644
--- a/ndn-cxx/util/logger.cpp
+++ b/ndn-cxx/util/logger.cpp
@@ -20,13 +20,7 @@
  */
 
 #include "ndn-cxx/util/logger.hpp"
-#include "ndn-cxx/util/logging.hpp"
-#include "ndn-cxx/util/time.hpp"
-
-#include <cinttypes> // for PRIdLEAST64
-#include <cstdlib>   // for std::abs()
-#include <cstring>   // for std::strspn()
-#include <stdio.h>   // for snprintf()
+#include "ndn-cxx/detail/common.hpp"
 
 namespace ndn {
 namespace util {
@@ -79,73 +73,5 @@
   NDN_THROW(std::invalid_argument("unrecognized log level '" + s + "'"));
 }
 
-/**
- * \brief checks if incoming logger name meets criteria
- * \param name name of logger
- */
-static bool
-isValidLoggerName(const std::string& name)
-{
-  // acceptable characters for Logger name
-  const char* okChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789~#%_<>.-";
-  if (std::strspn(name.c_str(), okChars) != name.size()) {
-    return false;
-  }
-  if (name.empty() || name.front() == '.' || name.back() == '.') {
-    return false;
-  }
-  if (name.find("..") != std::string::npos) {
-    return false;
-  }
-  return true;
-}
-
-Logger::Logger(const char* name)
-  : m_moduleName(name)
-{
-  if (!isValidLoggerName(m_moduleName)) {
-    NDN_THROW(std::invalid_argument("Logger name '" + m_moduleName + "' is invalid"));
-  }
-  this->setLevel(LogLevel::NONE);
-  Logging::get().addLoggerImpl(*this);
-}
-
-void
-Logger::registerModuleName(const char* name)
-{
-  std::string moduleName(name);
-  if (!isValidLoggerName(moduleName)) {
-    NDN_THROW(std::invalid_argument("Logger name '" + moduleName + "' is invalid"));
-  }
-  Logging::get().registerLoggerNameImpl(std::move(moduleName));
-}
-
-namespace detail {
-
-std::ostream&
-operator<<(std::ostream& os, LoggerTimestamp)
-{
-  using namespace ndn::time;
-
-  const auto sinceEpoch = system_clock::now().time_since_epoch();
-  BOOST_ASSERT(sinceEpoch.count() >= 0);
-  // use abs() to silence truncation warning in snprintf(), see #4365
-  const auto usecs = std::abs(duration_cast<microseconds>(sinceEpoch).count());
-  const auto usecsPerSec = microseconds::period::den;
-
-  // 10 (whole seconds) + '.' + 6 (fraction) + '\0'
-  char buffer[10 + 1 + 6 + 1];
-  BOOST_ASSERT_MSG(usecs / usecsPerSec <= 9999999999, "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 on some platforms, see #2299
-  ::snprintf(buffer, sizeof(buffer), "%" PRIdLEAST64 ".%06" PRIdLEAST64,
-             usecs / usecsPerSec, usecs % usecsPerSec);
-
-  return os << buffer;
-}
-
-} // namespace detail
 } // namespace util
 } // namespace ndn
diff --git a/ndn-cxx/util/logger.hpp b/ndn-cxx/util/logger.hpp
index f785c7b..531329b 100644
--- a/ndn-cxx/util/logger.hpp
+++ b/ndn-cxx/util/logger.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2018 Regents of the University of California.
+ * Copyright (c) 2013-2019 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -22,15 +22,7 @@
 #ifndef NDN_UTIL_LOGGER_HPP
 #define NDN_UTIL_LOGGER_HPP
 
-#include "ndn-cxx/detail/common.hpp"
-
-#ifdef HAVE_NDN_CXX_CUSTOM_LOGGER
-#include "ndn-cxx/util/custom-logger.hpp"
-#else
-
-#include <boost/log/common.hpp>
-#include <boost/log/sources/logger.hpp>
-#include <atomic>
+#include "ns3/log.h"
 
 namespace ndn {
 namespace util {
@@ -60,43 +52,6 @@
 LogLevel
 parseLogLevel(const std::string& s);
 
-/** \brief Represents a log module in the logging facility.
- *
- *  \note Normally, loggers should be defined using #NDN_LOG_INIT, #NDN_LOG_MEMBER_INIT,
- *        or #NDN_LOG_MEMBER_INIT_SPECIALIZED.
- */
-class Logger : public boost::log::sources::logger_mt
-{
-public:
-  explicit
-  Logger(const char* name);
-
-  static void
-  registerModuleName(const char* name);
-
-  const std::string&
-  getModuleName() const
-  {
-    return m_moduleName;
-  }
-
-  bool
-  isLevelEnabled(LogLevel level) const
-  {
-    return m_currentLevel.load(std::memory_order_relaxed) >= level;
-  }
-
-  void
-  setLevel(LogLevel level)
-  {
-    m_currentLevel.store(level, std::memory_order_relaxed);
-  }
-
-private:
-  const std::string m_moduleName;
-  std::atomic<LogLevel> m_currentLevel;
-};
-
 namespace detail {
 
 /** \brief A tag type used to output a timestamp to a stream.
@@ -130,160 +85,33 @@
 
 } // namespace detail
 
-/** \cond */
-// implementation detail
-#define NDN_LOG_REGISTER_NAME(name) \
-  []() -> bool { \
-    ::ndn::util::Logger::registerModuleName(BOOST_STRINGIZE(name)); \
-    return true; \
-  }()
-
-// implementation detail
-#define NDN_LOG_INIT_FUNCTION_BODY(name) \
-  { \
-    static ::ndn::util::Logger logger(BOOST_STRINGIZE(name)); \
-    return logger; \
-  }
-/** \endcond */
-
-/** \brief Define a non-member log module.
- *
- *  This macro can be used in global scope to define a log module for an entire translation
- *  unit, or in namespace scope to define a log module for the enclosing namespace.
- *  Use #NDN_LOG_MEMBER_INIT to define a log module as a class or struct member.
- *
- *  \warning Do not use this macro in header files unless you know what you're doing,
- *           as it can easily trigger ODR violations if used incorrectly.
- *
- *  \param name the logger name
- *  \note The logger name is restricted to alphanumeric characters and a select set of
- *        symbols: `~`, `#`, `%`, `_`, `<`, `>`, `.`, `-`. It must not start or end with
- *        a dot (`.`), or contain multiple consecutive dots.
+/** \brief declare a log module
  */
-#define NDN_LOG_INIT(name) \
-  namespace { \
-    const bool ndn_cxx_loggerRegistration __attribute__((used)) = NDN_LOG_REGISTER_NAME(name); \
-    ::ndn::util::Logger& ndn_cxx_getLogger() \
-    NDN_LOG_INIT_FUNCTION_BODY(name) \
-  } \
-  struct ndn_cxx_allow_trailing_semicolon
+#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE("ndn-cxx." BOOST_STRINGIZE(name))
 
-/** \brief Declare a member log module, without initializing it.
- *
- *  This macro should only be used to declare a log module as a class or struct member.
- *  It is recommended to place this macro in the private or protected section of the
- *  class or struct definition. Use #NDN_LOG_INIT to declare a non-member log module.
- *
- *  If the enclosing class is a template, this macro can be used in conjunction with
- *  #NDN_LOG_MEMBER_DECL_SPECIALIZED and #NDN_LOG_MEMBER_INIT_SPECIALIZED to provide
- *  different loggers for different template specializations.
- */
 #define NDN_LOG_MEMBER_DECL() \
-  static ::ndn::util::Logger& ndn_cxx_getLogger(); \
-  private: \
-  static const bool ndn_cxx_loggerRegistration
+  static ::ns3::LogComponent g_log
 
-/** \brief Initialize a member log module.
- *
- *  This macro should only be used to initialize a previously declared member log module.
- *  It must be placed in a .cpp file (NOT in a header file), in the same namespace as
- *  the class or struct that contains the log module.
- *
- *  \param cls class name; wrap in parentheses if it contains commas
- *  \param name the logger name
- *  \note The logger name is restricted to alphanumeric characters and a select set of
- *        symbols: `~`, `#`, `%`, `_`, `<`, `>`, `.`, `-`. It must not start or end with
- *        a dot (`.`), or contain multiple consecutive dots.
- */
 #define NDN_LOG_MEMBER_INIT(cls, name) \
-  const bool ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_loggerRegistration = \
-  NDN_LOG_REGISTER_NAME(name); \
-  ::ndn::util::Logger& ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_getLogger() \
-  NDN_LOG_INIT_FUNCTION_BODY(name) \
-  struct ndn_cxx_allow_trailing_semicolon
+  ::ns3::LogComponent cls::g_log = ::ns3::LogComponent("ndn-cxx." BOOST_STRINGIZE(name), __FILE__)
 
-/** \brief Declare an explicit specialization of a member log module of a class template.
- *
- *  \param cls fully specialized class name; wrap in parentheses if it contains commas
- */
+// ::ns3::LogComponent ::ndn::util::detail::ArgumentType<void(cls)>::g_log = ::ns3::LogComponent("ndn-cxx." BOOST_STRINGIZE(name), __FILE__)
+
 #define NDN_LOG_MEMBER_DECL_SPECIALIZED(cls) \
-  template<> \
-  const bool ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_loggerRegistration; \
-  template<> \
-  ::ndn::util::Logger& ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_getLogger()
+  static ::ns3::LogComponent g_log
 
-/** \brief Define an explicit specialization of a member log module of a class template.
- *
- *  This macro must be placed in a .cpp file (NOT in a header file), in the same namespace
- *  as the class template that contains the log module.
- *
- *  \param cls fully specialized class name; wrap in parentheses if it contains commas
- *  \param name the logger name
- *  \note The logger name is restricted to alphanumeric characters and a select set of
- *        symbols: `~`, `#`, `%`, `_`, `<`, `>`, `.`, `-`. It must not start or end with
- *        a dot (`.`), or contain multiple consecutive dots.
- */
 #define NDN_LOG_MEMBER_INIT_SPECIALIZED(cls, name) \
   template<> \
-  const bool ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_loggerRegistration = \
-  NDN_LOG_REGISTER_NAME(name); \
-  template<> \
-  ::ndn::util::Logger& ::ndn::util::detail::ArgumentType<void(cls)>::ndn_cxx_getLogger() \
-  NDN_LOG_INIT_FUNCTION_BODY(name) \
-  struct ndn_cxx_allow_trailing_semicolon
+  ::ns3::LogComponent ::ndn::util::detail::ArgumentType<void(cls)>::g_log = ::ns3::LogComponent("ndn-cxx." BOOST_STRINGIZE(name), __FILE__)
 
-/** \cond */
-#if BOOST_VERSION == 105900
-// workaround Boost bug 11549
-#define NDN_BOOST_LOG(x) BOOST_LOG(x) << ""
-#else
-#define NDN_BOOST_LOG(x) BOOST_LOG(x)
-#endif
-
-// implementation detail
-#define NDN_LOG_INTERNAL(lvl, lvlstr, expression) \
-  do { \
-    if (ndn_cxx_getLogger().isLevelEnabled(::ndn::util::LogLevel::lvl)) { \
-      NDN_BOOST_LOG(ndn_cxx_getLogger()) << ::ndn::util::detail::LoggerTimestamp{} \
-        << " " BOOST_STRINGIZE(lvlstr) ": [" << ndn_cxx_getLogger().getModuleName() << "] " \
-        << expression; \
-    } \
-  } while (false)
-/** \endcond */
-
-/** \brief Log at TRACE level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_TRACE(expression) NDN_LOG_INTERNAL(TRACE, TRACE, expression)
-
-/** \brief Log at DEBUG level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_DEBUG(expression) NDN_LOG_INTERNAL(DEBUG, DEBUG, expression)
-
-/** \brief Log at INFO level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_INFO(expression) NDN_LOG_INTERNAL(INFO, INFO, expression)
-
-/** \brief Log at WARN level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_WARN(expression) NDN_LOG_INTERNAL(WARN, WARNING, expression)
-
-/** \brief Log at ERROR level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_ERROR(expression) NDN_LOG_INTERNAL(ERROR, ERROR, expression)
-
-/** \brief Log at FATAL level.
- *  \pre A log module must be declared in the same translation unit, class, struct, or namespace.
- */
-#define NDN_LOG_FATAL(expression) NDN_LOG_INTERNAL(FATAL, FATAL, expression)
+#define NDN_LOG_TRACE(expression) NS_LOG_LOGIC(expression)
+#define NDN_LOG_DEBUG(expression) NS_LOG_DEBUG(expression)
+#define NDN_LOG_INFO(expression)  NS_LOG_INFO(expression)
+#define NDN_LOG_WARN(expression)  NS_LOG_ERROR(expression)
+#define NDN_LOG_ERROR(expression) NS_LOG_WARN(expression)
+#define NDN_LOG_FATAL(expression) NS_LOG_FATAL(expression)
 
 } // namespace util
 } // namespace ndn
 
-#endif // HAVE_NDN_CXX_CUSTOM_LOGGER
-
 #endif // NDN_UTIL_LOGGER_HPP
diff --git a/ndn-cxx/util/logging.cpp b/ndn-cxx/util/logging.cpp
deleted file mode 100644
index 5f19548..0000000
--- a/ndn-cxx/util/logging.cpp
+++ /dev/null
@@ -1,260 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/*
- * Copyright (c) 2013-2019 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 "ndn-cxx/util/logging.hpp"
-#include "ndn-cxx/util/logger.hpp"
-
-#include <boost/log/expressions.hpp>
-#include <boost/range/adaptor/map.hpp>
-#include <boost/range/algorithm/copy.hpp>
-#include <boost/range/iterator_range.hpp>
-
-#include <cstdlib>
-#include <iostream>
-#include <sstream>
-
-// suppress warning caused by <boost/log/sinks/text_ostream_backend.hpp>
-#ifdef __clang__
-#pragma clang diagnostic ignored "-Wundefined-func-template"
-#endif
-
-namespace ndn {
-namespace util {
-
-static const LogLevel INITIAL_DEFAULT_LEVEL = LogLevel::NONE;
-
-Logging&
-Logging::get()
-{
-  // Initialization of block-scope variables with static storage duration is thread-safe.
-  // See ISO C++ standard [stmt.dcl]/4
-  static Logging instance;
-  return instance;
-}
-
-Logging::Logging()
-{
-  this->setDestinationImpl(shared_ptr<std::ostream>(&std::clog, [] (auto) {}));
-
-  const char* environ = std::getenv("NDN_LOG");
-  if (environ != nullptr) {
-    this->setLevelImpl(environ);
-  }
-}
-
-void
-Logging::addLoggerImpl(Logger& logger)
-{
-  std::lock_guard<std::mutex> lock(m_mutex);
-
-  const std::string& moduleName = logger.getModuleName();
-  m_loggers.emplace(moduleName, &logger);
-
-  logger.setLevel(findLevel(moduleName));
-}
-
-void
-Logging::registerLoggerNameImpl(std::string name)
-{
-  std::lock_guard<std::mutex> lock(m_mutex);
-  m_loggers.emplace(std::move(name), nullptr);
-}
-
-std::set<std::string>
-Logging::getLoggerNamesImpl() const
-{
-  std::lock_guard<std::mutex> lock(m_mutex);
-
-  std::set<std::string> loggerNames;
-  boost::copy(m_loggers | boost::adaptors::map_keys, std::inserter(loggerNames, loggerNames.end()));
-  return loggerNames;
-}
-
-LogLevel
-Logging::findLevel(std::string mn) const
-{
-  while (!mn.empty()) {
-    auto it = m_enabledLevel.find(mn);
-    if (it != m_enabledLevel.end()) {
-      return it->second;
-    }
-    size_t pos = mn.find_last_of('.');
-    if (pos < mn.size() - 1) {
-      mn = mn.substr(0, pos + 1);
-    }
-    else if (pos == mn.size() - 1) {
-      mn.pop_back();
-      pos = mn.find_last_of('.');
-      if (pos != std::string::npos) {
-        mn = mn.substr(0, pos + 1);
-      }
-      else {
-        mn = "";
-      }
-    }
-    else {
-      mn = "";
-    }
-  }
-
-  auto it = m_enabledLevel.find(mn);
-  return it != m_enabledLevel.end() ? it->second : INITIAL_DEFAULT_LEVEL;
-}
-
-#ifdef NDN_CXX_HAVE_TESTS
-bool
-Logging::removeLogger(Logger& logger)
-{
-  const std::string& moduleName = logger.getModuleName();
-  auto range = m_loggers.equal_range(moduleName);
-  for (auto i = range.first; i != range.second; ++i) {
-    if (i->second == &logger) {
-      m_loggers.erase(i);
-      return true;
-    }
-  }
-  return false;
-}
-#endif // NDN_CXX_HAVE_TESTS
-
-void
-Logging::setLevelImpl(const std::string& prefix, LogLevel level)
-{
-  std::lock_guard<std::mutex> lock(m_mutex);
-
-  if (prefix.empty() || prefix.back() == '*') {
-    std::string p = prefix;
-    if (!p.empty()) {
-      p.pop_back();
-    }
-
-    for (auto i = m_enabledLevel.begin(); i != m_enabledLevel.end();) {
-      if (i->first.compare(0, p.size(), p) == 0) {
-        i = m_enabledLevel.erase(i);
-      }
-      else {
-        ++i;
-      }
-    }
-    m_enabledLevel[p] = level;
-
-    for (const auto& pair : m_loggers) {
-      if (pair.first.compare(0, p.size(), p) == 0 && pair.second != nullptr) {
-        pair.second->setLevel(level);
-      }
-    }
-  }
-  else {
-    m_enabledLevel[prefix] = level;
-    auto range = boost::make_iterator_range(m_loggers.equal_range(prefix));
-    for (const auto& pair : range) {
-      if (pair.second != nullptr) {
-        pair.second->setLevel(level);
-      }
-    }
-  }
-}
-
-void
-Logging::setLevelImpl(const std::string& config)
-{
-  std::stringstream ss(config);
-  std::string configModule;
-  while (std::getline(ss, configModule, ':')) {
-    size_t ind = configModule.find('=');
-    if (ind == std::string::npos) {
-      NDN_THROW(std::invalid_argument("malformed logging config: '=' is missing"));
-    }
-
-    std::string moduleName = configModule.substr(0, ind);
-    LogLevel level = parseLogLevel(configModule.substr(ind + 1));
-    this->setLevelImpl(moduleName, level);
-  }
-}
-
-#ifdef NDN_CXX_HAVE_TESTS
-void
-Logging::resetLevels()
-{
-  this->setLevelImpl("*", INITIAL_DEFAULT_LEVEL);
-  m_enabledLevel.clear();
-}
-#endif // NDN_CXX_HAVE_TESTS
-
-void
-Logging::setDestination(std::ostream& os)
-{
-  setDestination(shared_ptr<std::ostream>(&os, [] (auto) {}));
-}
-
-void
-Logging::setDestinationImpl(shared_ptr<std::ostream> os)
-{
-  std::lock_guard<std::mutex> lock(m_mutex);
-
-  m_destination = std::move(os);
-
-  auto backend = boost::make_shared<boost::log::sinks::text_ostream_backend>();
-  backend->auto_flush(true);
-  backend->add_stream(boost::shared_ptr<std::ostream>(m_destination.get(), [] (auto) {}));
-
-  if (m_sink != nullptr) {
-    boost::log::core::get()->remove_sink(m_sink);
-    m_sink->flush();
-    m_sink.reset();
-  }
-
-  m_sink = boost::make_shared<Sink>(backend);
-  m_sink->set_formatter(boost::log::expressions::stream << boost::log::expressions::message);
-  boost::log::core::get()->add_sink(m_sink);
-}
-
-#ifdef NDN_CXX_HAVE_TESTS
-shared_ptr<std::ostream>
-Logging::getDestination() const
-{
-  return m_destination;
-}
-
-void
-Logging::setLevelImpl(const std::unordered_map<std::string, LogLevel>& prefixRules)
-{
-  resetLevels();
-  for (const auto& rule : prefixRules) {
-    setLevelImpl(rule.first, rule.second);
-  }
-}
-
-const std::unordered_map<std::string, LogLevel>&
-Logging::getLevels() const
-{
-  return m_enabledLevel;
-}
-#endif // NDN_CXX_HAVE_TESTS
-
-void
-Logging::flushImpl()
-{
-  m_sink->flush();
-}
-
-} // namespace util
-} // namespace ndn
diff --git a/ndn-cxx/util/logging.hpp b/ndn-cxx/util/logging.hpp
deleted file mode 100644
index 532ee73..0000000
--- a/ndn-cxx/util/logging.hpp
+++ /dev/null
@@ -1,214 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/*
- * Copyright (c) 2013-2018 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_UTIL_LOGGING_HPP
-#define NDN_UTIL_LOGGING_HPP
-
-#include "ndn-cxx/detail/common.hpp"
-
-#ifdef HAVE_NDN_CXX_CUSTOM_LOGGER
-#include "ndn-cxx/util/custom-logging.hpp"
-#else
-
-#include <boost/log/sinks.hpp>
-#include <mutex>
-#include <unordered_map>
-
-namespace ndn {
-namespace util {
-
-enum class LogLevel;
-class Logger;
-
-/** \brief Controls the logging facility.
- *
- *  \note Public static methods are thread safe.
- *        Non-public methods are not guaranteed to be thread safe.
- */
-class Logging : noncopyable
-{
-public:
-  /** \brief Get list of all registered logger names.
-   */
-  static std::set<std::string>
-  getLoggerNames();
-
-  /** \brief Set severity level.
-   *  \param prefix logger prefix; this can be a specific logger name, a general prefix like
-   *                `"ndn.a.*"` to apply a setting for all modules that contain that prefix,
-   *                or `"*"` for all modules
-   *  \param level minimum severity level
-   *
-   *  Log messages are output only if their severity is greater than the current minimum severity
-   *  level. The initial severity level is \c LogLevel::NONE, which enables FATAL messages only.
-   */
-  static void
-  setLevel(const std::string& prefix, LogLevel level);
-
-  /** \brief Set severity levels with a config string.
-   *  \param config colon-separated `key=value` pairs
-   *  \throw std::invalid_argument config string is malformed
-   *
-   *  \code
-   *  Logging::setLevel("*=INFO:Face=DEBUG:NfdController=WARN");
-   *  \endcode
-   *  is equivalent to:
-   *  \code
-   *  Logging::setLevel("*", LogLevel::INFO);
-   *  Logging::setLevel("Face", LogLevel::DEBUG);
-   *  Logging::setLevel("NfdController", LogLevel::WARN);
-   *  \endcode
-   */
-  static void
-  setLevel(const std::string& config);
-
-  /** \brief Set log destination.
-   *  \param os a stream for log output
-   *
-   *  The initial destination is `std::clog`.
-   */
-  static void
-  setDestination(shared_ptr<std::ostream> os);
-
-  /** \brief Set log destination.
-   *  \param os a stream for log output; caller must ensure it remains valid
-   *            until setDestination() is invoked again or program exits
-   *
-   *  This is equivalent to `setDestination(shared_ptr<std::ostream>(&os, nullDeleter))`.
-   */
-  static void
-  setDestination(std::ostream& os);
-
-  /** \brief Flush log backend.
-   *
-   *  This ensures all log messages are written to the destination stream.
-   */
-  static void
-  flush();
-
-private:
-  Logging();
-
-  void
-  addLoggerImpl(Logger& logger);
-
-  void
-  registerLoggerNameImpl(std::string name);
-
-  std::set<std::string>
-  getLoggerNamesImpl() const;
-
-  /**
-   * \brief Finds the appropriate LogLevel for a logger.
-   * \param moduleName name of logger
-   *
-   * This searches m_enabledLevel map to determine which LogLevel is appropriate for
-   * the incoming logger. It looks for the most specific prefix and broadens its
-   * prefix scope if a setting is not found. For example, when an incoming logger
-   * name is "ndn.a.b", it will search for "ndn.a.b" first. If this prefix is not
-   * contained in m_enabledLevel, it will search for "ndn.a.*", then "ndn.*", and
-   * finally "*". It defaults to INITIAL_DEFAULT_LEVEL if a matching prefix is not
-   * found.
-   */
-  LogLevel
-  findLevel(std::string moduleName) const;
-
-  void
-  setLevelImpl(const std::string& prefix, LogLevel level);
-
-  void
-  setLevelImpl(const std::string& config);
-
-  void
-  setDestinationImpl(shared_ptr<std::ostream> os);
-
-  void
-  flushImpl();
-
-NDN_CXX_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
-  static Logging&
-  get();
-
-#ifdef NDN_CXX_HAVE_TESTS
-  bool
-  removeLogger(Logger& logger);
-
-  void
-  resetLevels();
-
-  shared_ptr<std::ostream>
-  getDestination() const;
-
-  void
-  setLevelImpl(const std::unordered_map<std::string, LogLevel>& prefixRules);
-
-  const std::unordered_map<std::string, LogLevel>&
-  getLevels() const;
-#endif // NDN_CXX_HAVE_TESTS
-
-private:
-  friend Logger;
-
-  mutable std::mutex m_mutex;
-  std::unordered_map<std::string, LogLevel> m_enabledLevel; ///< module prefix => minimum level
-  std::unordered_multimap<std::string, Logger*> m_loggers; ///< module name => logger instance
-
-  using Sink = boost::log::sinks::asynchronous_sink<boost::log::sinks::text_ostream_backend>;
-  boost::shared_ptr<Sink> m_sink;
-  shared_ptr<std::ostream> m_destination;
-};
-
-inline std::set<std::string>
-Logging::getLoggerNames()
-{
-  return get().getLoggerNamesImpl();
-}
-
-inline void
-Logging::setLevel(const std::string& prefix, LogLevel level)
-{
-  get().setLevelImpl(prefix, level);
-}
-
-inline void
-Logging::setLevel(const std::string& config)
-{
-  get().setLevelImpl(config);
-}
-
-inline void
-Logging::setDestination(shared_ptr<std::ostream> os)
-{
-  get().setDestinationImpl(std::move(os));
-}
-
-inline void
-Logging::flush()
-{
-  get().flushImpl();
-}
-
-} // namespace util
-} // namespace ndn
-
-#endif // HAVE_NDN_CXX_CUSTOM_LOGGER
-
-#endif // NDN_UTIL_LOGGING_HPP