Interface Logger

  • All Known Implementing Classes:
    DefaultLogger

    public interface Logger
    Based on slf4j.Logger
    Since:
    1.0.0
    Author:
    imre.scheffer
    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void debug​(String msg)
      Log a message at the DEBUG level.
      void debug​(String format, Object... arguments)
      Log a message at the DEBUG level according to the specified format and arguments.
      void debug​(String msg, Throwable t)
      Log an exception (throwable) at the DEBUG level with an accompanying message.
      void error​(String msg)
      Log a message at the ERROR level.
      void error​(String format, Object... arguments)
      Log a message at the ERROR level according to the specified format and arguments.
      void error​(String msg, Throwable t)
      Log an exception (throwable) at the ERROR level with an accompanying message.
      Logger getLogger()
      getLogger.
      static Logger getLogger​(Class<?> clazz)
      Construct a new Logger instance.
      static Logger getLogger​(String name)
      Construct a new Logger instance.
      void info​(String msg)
      Log a message at the INFO level.
      void info​(String format, Object... arguments)
      Log a message at the INFO level according to the specified format and arguments.
      void info​(String msg, Throwable t)
      Log an exception (throwable) at the INFO level with an accompanying message.
      boolean isDebugEnabled()
      Is the logger instance enabled for the DEBUG level?
      boolean isInfoEnabled()
      Is the logger instance enabled for the INFO level?
      boolean isTraceEnabled()
      Is the logger instance enabled for the TRACE level?
      void setLogger​(Logger logger)
      setLogger.
      void trace​(String msg)
      Log a message at the TRACE level.
      void trace​(String format, Object... arguments)
      Log a message at the TRACE level according to the specified format and arguments.
      void trace​(String msg, Throwable t)
      Log an exception (throwable) at the TRACE level with an accompanying message.
      void warn​(String msg)
      Log a message at the WARN level.
      void warn​(String format, Object... arguments)
      Log a message at the WARN level according to the specified format and arguments.
      void warn​(String msg, Throwable t)
      Log an exception (throwable) at the WARN level with an accompanying message.
    • Method Detail

      • getLogger

        static Logger getLogger​(Class<?> clazz)
        Construct a new Logger instance.
        Parameters:
        clazz - the logger category class
        Returns:
        Logger instance
      • getLogger

        static Logger getLogger​(String name)
        Construct a new Logger instance.
        Parameters:
        name - the logger category name
        Returns:
        Logger instance
      • setLogger

        void setLogger​(Logger logger)

        setLogger.

        Parameters:
        logger - Logger instance
      • getLogger

        Logger getLogger()

        getLogger.

        Returns:
        Logger instance
      • isTraceEnabled

        boolean isTraceEnabled()
        Is the logger instance enabled for the TRACE level?
        Returns:
        True if this Logger is enabled for the TRACE level, false otherwise.
      • trace

        void trace​(String msg)
        Log a message at the TRACE level.
        Parameters:
        msg - the message string to be logged
      • trace

        void trace​(String format,
                   Object... arguments)
        Log a message at the TRACE level according to the specified format and arguments.

        This form avoids superfluous string concatenation when the logger is disabled for the TRACE level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for TRACE.

        Parameters:
        format - the format string
        arguments - a list of 3 or more arguments
      • trace

        void trace​(String msg,
                   Throwable t)
        Log an exception (throwable) at the TRACE level with an accompanying message.
        Parameters:
        msg - the message accompanying the exception
        t - the exception (throwable) to log
      • isDebugEnabled

        boolean isDebugEnabled()
        Is the logger instance enabled for the DEBUG level?
        Returns:
        True if this Logger is enabled for the DEBUG level, false otherwise.
      • debug

        void debug​(String msg)
        Log a message at the DEBUG level.
        Parameters:
        msg - the message string to be logged
      • debug

        void debug​(String format,
                   Object... arguments)
        Log a message at the DEBUG level according to the specified format and arguments.

        This form avoids superfluous string concatenation when the logger is disabled for the DEBUG level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for DEBUG.

        Parameters:
        format - the format string
        arguments - a list of 3 or more arguments
      • debug

        void debug​(String msg,
                   Throwable t)
        Log an exception (throwable) at the DEBUG level with an accompanying message.
        Parameters:
        msg - the message accompanying the exception
        t - the exception (throwable) to log
      • isInfoEnabled

        boolean isInfoEnabled()
        Is the logger instance enabled for the INFO level?
        Returns:
        True if this Logger is enabled for the INFO level, false otherwise.
      • info

        void info​(String msg)
        Log a message at the INFO level.
        Parameters:
        msg - the message string to be logged
      • info

        void info​(String format,
                  Object... arguments)
        Log a message at the INFO level according to the specified format and arguments.

        This form avoids superfluous string concatenation when the logger is disabled for the INFO level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for INFO.

        Parameters:
        format - the format string
        arguments - a list of 3 or more arguments
      • info

        void info​(String msg,
                  Throwable t)
        Log an exception (throwable) at the INFO level with an accompanying message.
        Parameters:
        msg - the message accompanying the exception
        t - the exception (throwable) to log
      • warn

        void warn​(String msg)
        Log a message at the WARN level.
        Parameters:
        msg - the message string to be logged
      • warn

        void warn​(String format,
                  Object... arguments)
        Log a message at the WARN level according to the specified format and arguments.

        This form avoids superfluous string concatenation when the logger is disabled for the WARN level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for WARN.

        Parameters:
        format - the format string
        arguments - a list of 3 or more arguments
      • warn

        void warn​(String msg,
                  Throwable t)
        Log an exception (throwable) at the WARN level with an accompanying message.
        Parameters:
        msg - the message accompanying the exception
        t - the exception (throwable) to log
      • error

        void error​(String msg)
        Log a message at the ERROR level.
        Parameters:
        msg - the message string to be logged
      • error

        void error​(String format,
                   Object... arguments)
        Log a message at the ERROR level according to the specified format and arguments.

        This form avoids superfluous string concatenation when the logger is disabled for the ERROR level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for ERROR.

        Parameters:
        format - the format string
        arguments - a list of 3 or more arguments
      • error

        void error​(String msg,
                   Throwable t)
        Log an exception (throwable) at the ERROR level with an accompanying message.
        Parameters:
        msg - the message accompanying the exception
        t - the exception (throwable) to log