Log.hpp

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/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
#ifndef _SYNC_LOG_HPP
#define _SYNC_LOG_HPP

#include <sstream>
#include <iomanip>
#include <iostream>

namespace OpenAB {

class Logger
{
  public:
    Logger();

    virtual ~Logger();

    enum LogLevel
    {
      Fatal = 0 , 
      Error,      
      Warning,    
      Info,       
      Verbose,    
      DebugF,     
      Debug       
    };

    template <typename T>
    Logger& operator<< (T data)
    {
      oss<<data;
      return *this;
    }

    virtual Logger& operator<< (std::ostream& (*pf)(std::ostream&)) = 0;

    Logger& get(LogLevel l);

    static LogLevel& OutLevel();

    static Logger* getDefaultLogger();

    static void setDefaultLogger(Logger* logger);

  protected:
    const char* toString(LogLevel l);
    LogLevel level;
    std::ostringstream oss;
};



#define LOG_L(__level)  \
  if (OpenAB::Logger::OutLevel() >= __level) \
    OpenAB::Logger::getDefaultLogger()->get(__level)

#define LOG_VERBOSE()  \
    LOG_L(OpenAB::Logger::Verbose)

#define LOG_DEBUG()  \
    LOG_L(OpenAB::Logger::Debug)

#define LOG_ERROR()  \
    LOG_L(OpenAB::Logger::Error)

#define LOG_FATAL()  \
    LOG_L(OpenAB::Logger::Fatal)

#define LOG_WARNING()  \
    LOG_L(OpenAB::Logger::Warning)

#define LOG_INFO()  \
    LOG_L(OpenAB::Logger::Info)

#define LOG()  \
  LOG_INFO()

#define LOG_FUNC() \
  LOG_L(OpenAB::Logger::DebugF) << __FILE__ <<": " << (long long int)(__LINE__) << ": "<< __FUNCTION__ << std::endl

}
#endif /* end  _SYNC_LOG_HPP */