Package play

Class Logger

java.lang.Object
play.Logger
public class Logger extends Object
High level API for logging operations.

Example, logging with the default application logger: 

 Logger.info("Hello!");
Example, logging with a custom logger: 
 Logger.of("my.logger").info("Hello!")
Each of the logging methods is overloaded to be able to take an array of arguments. These are formatted into the message String, replacing occurrences of '{}'. For example: 
 Logger.info("A {} request was received at {}", request.method(), request.uri());
This might print out: 
 A POST request was received at /api/items
This saves on the cost of String construction when logging is turned off.

This API is intended as a simple logging API to meet 99% percent of the most common logging needs with minimal code overhead. For more complex needs, the underlying() methods may be used to get the underlying SLF4J logger, or SLF4J may be used directly.

  • Constructor Details

    • Logger

      public Logger()

  • Method Details

    • of

      public static Logger.ALogger of(String name)
      Obtain a logger instance.
      Parameters:
      name - name of the logger
      Returns:
      a logger

    • of

      public static Logger.ALogger of(Class<?> clazz)
      Obtain a logger instance.
      Parameters:
      clazz - a class whose name will be used as logger name
      Returns:
      a logger

    • underlying

      @Deprecated public static org.slf4j.Logger underlying()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Get the underlying application SLF4J logger.
      Returns:
      the underlying logger

    • isTraceEnabled

      @Deprecated public static boolean isTraceEnabled()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Returns true if the logger instance enabled for the TRACE level?
      Returns:
      true if the logger instance enabled for the TRACE level?

    • isDebugEnabled

      @Deprecated public static boolean isDebugEnabled()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Returns true if the logger instance enabled for the DEBUG level?
      Returns:
      true if the logger instance enabled for the DEBUG level?

    • isInfoEnabled

      @Deprecated public static boolean isInfoEnabled()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Returns true if the logger instance enabled for the INFO level?
      Returns:
      true if the logger instance enabled for the INFO level?

    • isWarnEnabled

      @Deprecated public static boolean isWarnEnabled()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Returns true if the logger instance enabled for the WARN level?
      Returns:
      true if the logger instance enabled for the WARN level?

    • isErrorEnabled

      @Deprecated public static boolean isErrorEnabled()
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Returns true if the logger instance enabled for the ERROR level?
      Returns:
      true if the logger instance enabled for the ERROR level?

    • trace

      @Deprecated public static void trace(String message)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the TRACE level.
      Parameters:
      message - message to log

    • trace

      @Deprecated public static void trace(Supplier<String> msgSupplier)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the TRACE level.
      Parameters:
      msgSupplier - Supplier that contains message to log

    • trace

      @Deprecated public static void trace(String message, Object... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the TRACE level.
      Parameters:
      message - message to log
      args - The arguments to apply to the message String

    • trace

      @Deprecated public static void trace(String message, Supplier<?>... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the TRACE level.
      Parameters:
      message - message to log
      args - Suppliers that contain arguments to apply to the message String

    • trace

      @Deprecated public static void trace(String message, Throwable error)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the TRACE level.
      Parameters:
      message - message to log
      error - associated exception

    • debug

      @Deprecated public static void debug(String message)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the DEBUG level.
      Parameters:
      message - message to log

    • debug

      @Deprecated public static void debug(Supplier<String> msgSupplier)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the DEBUG level.
      Parameters:
      msgSupplier - Supplier that contains message to log

    • debug

      @Deprecated public static void debug(String message, Object... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the DEBUG level.
      Parameters:
      message - message to log
      args - The arguments to apply to the message String

    • debug

      @Deprecated public static void debug(String message, Supplier<?>... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the DEBUG level.
      Parameters:
      message - message to log
      args - Suppliers that contain arguments to apply to the message String

    • debug

      @Deprecated public static void debug(String message, Throwable error)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the DEBUG level.
      Parameters:
      message - message to log
      error - associated exception

    • info

      @Deprecated public static void info(String message)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the INFO level.
      Parameters:
      message - message to log

    • info

      @Deprecated public static void info(Supplier<String> msgSupplier)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the INFO level.
      Parameters:
      msgSupplier - Supplier that contains message to log

    • info

      @Deprecated public static void info(String message, Object... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the INFO level.
      Parameters:
      message - message to log
      args - The arguments to apply to the message string

    • info

      @Deprecated public static void info(String message, Supplier<?>... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the INFO level.
      Parameters:
      message - message to log
      args - Suppliers that contain arguments to apply to the message String

    • info

      @Deprecated public static void info(String message, Throwable error)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the INFO level.
      Parameters:
      message - message to log
      error - associated exception

    • warn

      @Deprecated public static void warn(String message)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the WARN level.
      Parameters:
      message - message to log

    • warn

      @Deprecated public static void warn(Supplier<String> msgSupplier)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the WARN level.
      Parameters:
      msgSupplier - Supplier that contains message to log

    • warn

      @Deprecated public static void warn(String message, Object... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the WARN level.
      Parameters:
      message - message to log
      args - The arguments to apply to the message string

    • warn

      @Deprecated public static void warn(String message, Supplier<?>... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the WARN level.
      Parameters:
      message - message to log
      args - Suppliers that contain arguments to apply to the message String

    • warn

      @Deprecated public static void warn(String message, Throwable error)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the WARN level.
      Parameters:
      message - message to log
      error - associated exception

    • error

      @Deprecated public static void error(String message)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the ERROR level.
      Parameters:
      message - message to log

    • error

      @Deprecated public static void error(Supplier<String> msgSupplier)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the ERROR level.
      Parameters:
      msgSupplier - Supplier that contains message to log

    • error

      @Deprecated public static void error(String message, Object... args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the ERROR level.
      Parameters:
      message - message to log
      args - The arguments to apply to the message string

    • error

      @Deprecated public static void error(String message, Supplier<?> args)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the ERROR level.
      Parameters:
      message - message to log
      args - Suppliers that contain arguments to apply to the message String

    • error

      @Deprecated public static void error(String message, Throwable error)
      Deprecated.
      Deprecated as of 2.7.0. Create an instance of Logger.ALogger via of(String) / of(Class) and use the same-named method. Or use SLF4J directly.
      Log a message with the ERROR level.
      Parameters:
      message - message to log
      error - associated exception