QcInfoLogger.h

Go to the documentation of this file.

// Copyright CERN and copyright holders of ALICE O2. This software is
// distributed under the terms of the GNU General Public License v3 (GPL
// Version 3), copied verbatim in the file "COPYING".
//
// See http://alice-o2.web.cern.ch/license for full licensing information.
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.


#ifndef QC_CORE_QCINFOLOGGER_H
#define QC_CORE_QCINFOLOGGER_H

#include <InfoLogger/InfoLogger.hxx>
#include <InfoLogger/InfoLoggerMacros.hxx>

typedef AliceO2::InfoLogger::InfoLogger infologger; // not to have to type the full stuff each time
typedef AliceO2::InfoLogger::InfoLoggerContext infoContext;

namespace o2::quality_control::core
{

class QcInfoLogger : public AliceO2::InfoLogger::InfoLogger
{

 public:
  static QcInfoLogger& GetInstance()
  {
    // Guaranteed to be destroyed. Instantiated on first use
    static QcInfoLogger foo;
    return foo;
  }

  void setFacility(const std::string& facility);

 private:
  QcInfoLogger();
  ~QcInfoLogger() override = default;

  // Disallow copying
  QcInfoLogger& operator=(const QcInfoLogger&) = delete;
  QcInfoLogger(const QcInfoLogger&) = delete;
};

} // namespace o2::quality_control::core

// Define shortcuts to our instance using macros.
#define ILOG_INST o2::quality_control::core::QcInfoLogger::GetInstance()
#define ILOGI ILOG_INST << AliceO2::InfoLogger::InfoLogger::Info
#define ILOGW ILOG_INST << AliceO2::InfoLogger::InfoLogger::Warning
#define ILOGE ILOG_INST << AliceO2::InfoLogger::InfoLogger::Error
#define ILOGF ILOG_INST << AliceO2::InfoLogger::InfoLogger::Fatal
#define ENDM AliceO2::InfoLogger::InfoLogger::endm;

#define NUM_ARGS_(_1, _2, _3, _4, _5, _6, _7, _8, TOTAL, ...) TOTAL
#define NUM_ARGS(...) NUM_ARGS_(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
#define CONCATENATE(X, Y) X##Y
#define CONCATE(MACRO, NUMBER) CONCATENATE(MACRO, NUMBER)
#define VA_MACRO(MACRO, ...)            \
  CONCATE(MACRO, NUM_ARGS(__VA_ARGS__)) \
  (__VA_ARGS__)

#define ILOG(...) VA_MACRO(ILOG, void, void, __VA_ARGS__)
// TODO understand why the zero argument does not work.
// the code is derived from https://stackoverflow.com/questions/16683146/can-macros-be-overloaded-by-number-of-arguments
#define ILOG0(s, t) \
  ILOG_INST << AliceO2::InfoLogger::InfoLogger::InfoLoggerMessageOption { AliceO2::InfoLogger::InfoLogger::Severity::Info, AliceO2::InfoLogger::InfoLogger::Level::Support, AliceO2::InfoLogger::InfoLogger::undefinedMessageOption.errorCode, __FILE__, __LINE__ }
#define ILOG1(s, t, severity) \
  ILOG_INST << AliceO2::InfoLogger::InfoLogger::InfoLoggerMessageOption { AliceO2::InfoLogger::InfoLogger::Severity::severity, AliceO2::InfoLogger::InfoLogger::Level::Support, AliceO2::InfoLogger::InfoLogger::undefinedMessageOption.errorCode, __FILE__, __LINE__ }
#define ILOG2(s, t, severity, level) \
  ILOG_INST << AliceO2::InfoLogger::InfoLogger::InfoLoggerMessageOption { AliceO2::InfoLogger::InfoLogger::Severity::severity, AliceO2::InfoLogger::InfoLogger::Level::level, AliceO2::InfoLogger::InfoLogger::undefinedMessageOption.errorCode, __FILE__, __LINE__ }

#endif // QC_CORE_QCINFOLOGGER_H