logger.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_UTIL_LOGGER_HPP
#define NDN_UTIL_LOGGER_HPP

#include "../common.hpp"

#ifdef HAVE_NDN_CXX_CUSTOM_LOGGER
#include "ndn-cxx-custom-logger.hpp"
#else

#include <atomic>

#include "ns3/log.h"

namespace ndn {
namespace util {

enum class LogLevel {
  FATAL   = -1,   
  NONE    = 0,    
  ERROR   = 1,    
  WARN    = 2,    
  INFO    = 3,    
  DEBUG   = 4,    
  TRACE   = 5,    
  ALL     = 255   
};

std::ostream&
operator<<(std::ostream& os, LogLevel level);

LogLevel
parseLogLevel(const std::string& s);

class Logger
{
public:
  explicit
  Logger(const std::string& 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;
};

#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE(BOOST_STRINGIZE(name));

struct LoggerTimestamp
{
};

std::ostream&
operator<<(std::ostream& os, const LoggerTimestamp&);

#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