error_logger.cpp

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/*
 * SObjectizer-5
 */
 
/*!
 * \since
 * v.5.5.0
 *
 * \file
 * \brief Tools for logging error messages inside SObjectizer core.
 */
 
#include <so_5/error_logger.hpp>
 
#include <so_5/compiler_features.hpp>
 
#include <chrono>
#include <ctime>
#include <cstdio>
#include <iostream>
 
#include <so_5/current_thread_id.hpp>
 
#if defined( SO_5_MSVC )
  #pragma warning(push)
  // Warning about non-secure localtime and sprintf.
  #pragma warning(disable: 4996)
#endif
 
#if defined( SO_5_CLANG )
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#endif
 
namespace so_5
{
 
//
// stderr_logger_t
//
/*!
 * \since
 * v.5.5.0
 *
 * \brief A standard implementation of error_logger interface.
 */
class stderr_logger_t : public error_logger_t
  {
  public :
    stderr_logger_t()
      {}
 
    virtual void
    log(
      const char * file,
      unsigned int line,
      const std::string & message ) override;
  };
 
void
stderr_logger_t::log(
  const char * file,
  unsigned int line,
  const std::string & message )
  {
    using namespace std;
    using namespace chrono;
 
    ostringstream total_message;
 
    auto now = system_clock::now();
    auto ms = duration_cast< milliseconds >( now.time_since_epoch() );
    time_t unix_time = duration_cast< seconds >( ms ).count();
 
    char date_time_first_part[ 64 ];
    strftime( date_time_first_part, sizeof( date_time_first_part ) - 1,
        "%Y-%m-%d %H:%M:%S", localtime( &unix_time ) );
    char date_time_second_part[ 16 ];
    sprintf( date_time_second_part, ".%03u",
        static_cast< unsigned int >( ms.count() % 1000u ) );
 
    total_message << "[" << date_time_first_part
        << date_time_second_part
        << " TID:" << query_current_thread_id()
        << "] " << message
        << " (" << file << ":" << line
        << ")\n";
 
    cerr << total_message.str();
  }
 
//
// create_stderr_logger
//
SO_5_FUNC error_logger_shptr_t
create_stderr_logger()
  {
    return error_logger_shptr_t( new stderr_logger_t() );
  }
 
} /* namespace so_5 */
 
#if defined( SO_5_CLANG )
#pragma clang diagnostic pop
#endif
 
#if defined( SO_5_MSVC )
  #pragma warning(pop)
#endif