FileLogOutput.h

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// this is for emacs file handling -*- mode: c++; indent-tabs-mode: nil -*-

// -- BEGIN LICENSE BLOCK ----------------------------------------------
// This file is part of FZIs ic_workspace.
//
// This program is free software licensed under the LGPL
// (GNU LESSER GENERAL PUBLIC LICENSE Version 3).
// You can find a copy of this license in LICENSE folder in the top
// directory of the source code.
//
// © Copyright 2016 FZI Forschungszentrum Informatik, Karlsruhe, Germany
//
// -- END LICENSE BLOCK ------------------------------------------------

//----------------------------------------------------------------------
//----------------------------------------------------------------------
#ifndef ICL_CORE_LOGGING_FILE_LOG_OUTPUT_H_INCLUDED
#define ICL_CORE_LOGGING_FILE_LOG_OUTPUT_H_INCLUDED

#include <fstream>

#include "icl_core/TimeSpan.h"
#include "icl_core/TimeStamp.h"
#include "icl_core_logging/ImportExport.h"
#include "icl_core_logging/LogOutputStream.h"

#ifdef _IC_BUILDER_ZLIB_
# include <zlib.h>
#endif

namespace icl_core {
namespace logging {

class ICL_CORE_LOGGING_IMPORT_EXPORT FileLogOutput : public LogOutputStream,
                                                     protected virtual icl_core::Noncopyable
{
  friend class LoggingManager;

public:
  static LogOutputStream *create(const icl_core::String& name, const icl_core::String& config_prefix,
                                 icl_core::logging::LogLevel log_level = cDEFAULT_LOG_LEVEL);

private:
  FileLogOutput(const icl_core::String& name, const icl_core::String& config_prefix,
                icl_core::logging::LogLevel log_level);
  FileLogOutput(const icl_core::String& name, const icl_core::String& config_prefix,
                icl_core::logging::LogLevel log_level, bool flush);
  virtual ~FileLogOutput();

  virtual void pushImpl(const icl_core::String& log_line);

  void expandFilename();

  bool isOpen();
  void flush();

  void closeLogFile();
  void openLogFile();
  void rotateLogFile();

  icl_core::String m_filename;
  std::ofstream m_log_file;

  bool m_rotate;
  int64_t m_last_rotation;

  bool m_delete_old_files;
  uint32_t m_delete_older_than_days;

  bool m_flush;

#if defined(_IC_BUILDER_ZLIB_)
  bool m_online_zip;
  gzFile m_zipped_log_file;
#endif
};

}
}

#endif