Logger.h

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#ifndef GCP_UTIL_LOGGER_H
#define GCP_UTIL_LOGGER_H

#include <string>
#include <pthread.h> // Needed for POSIX thread function calls

#define LOG_HANDLER_FN(fn) void (fn)(std::string logStr)

#include "gcp/util/common/LogFile.h"
#include "gcp/util/common/Mutex.h"

namespace gcp {
  namespace util {
    
    class LogStream;

    class Logger {
    public:
      
      virtual ~Logger();
      
      static void log(std::string message, bool isError);
      static void log(LogStream* ls);
      static void dispatch(std::string message, bool isError);
      static void dispatch(LogStream* ls);

      static void report(std::string message, bool isError);
      static void report(LogStream* ls);

      static void installLogHandler(LOG_HANDLER_FN(*logHandler));

      static void installErrHandler(LOG_HANDLER_FN(*errHandler));

      static void setPrefix(std::string prefix);

      static void setLogFilePrefix(const std::string& prefix);
      
      static void setLogFileDirectory(const std::string& dir);

      static void openLogFile();

      static void closeLogFile();

      /*
       * Install a default print function for printing to stdout
       */
      static void installStdoutPrintFn(LOG_HANDLER_FN(*stdoutPrintFn));
      static void installStderrPrintFn(LOG_HANDLER_FN(*stderrPrintFn));

      static void defaultStdoutPrintFn(std::string str);
      static void defaultStderrPrintFn(std::string str);

      static void printToStdout(std::string message);
      static void printToStderr(std::string message);

    private:

      Logger();

      static LOG_HANDLER_FN(*logHandler_);
      static LOG_HANDLER_FN(*errHandler_);
      
      static LOG_HANDLER_FN(*stdoutPrintFn_);
      static LOG_HANDLER_FN(*stderrPrintFn_);
      
      static std::string prefix_;

      static bool haveLogFile_;
      static LogFile logFile_;

      static Mutex guard_;
      static void write(const std::string& message, bool isError, bool dispatch, bool log);

    }; // End class Logger
    
  } // End namespace util
} // End namespace gcp



#endif // End #ifndef GCP_UTIL_LOGGER_H