Package de.iip_ecosphere.platform.configuration

Class FallbackLogger

java.lang.Object

de.iip_ecosphere.platform.configuration.FallbackLogger

All Implemented Interfaces:

org.slf4j.Logger

public class FallbackLogger
extends java.lang.Object
implements org.slf4j.Logger

This is a poor man's fallback logger. Why not just a default implementation of SL4J. Because the logging implementation shall only be added during integration (architectural constraint C10), we may end up running the platform instantiator without any logging (as production code and we are not permitted to add a logging implementation). If there is a logging implementation at runtime, fine. If there is none, EASy will not complain about any error, not so good. This is the case for this poor man's logger, which is instantiated and used in the platform instantiator/lifecycle descriptor if there is no logging implementation (and the default one would disable all logging). While it delegates all logging to some rather simple (formatting) function, it completely ignores markers and cause throwables. If somebody needs this, please add. In it's current version, this logger is not intended for reuse, but who knows the future. Public for testing.

Author:

Holger Eichelberger, SSE

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FallbackLogger.LoggingLevel	Defines the basic logging levels in here.

Field Summary

Fields

Modifier and Type	Field	Description
private FallbackLogger.LoggingLevel	level

Fields inherited from interface org.slf4j.Logger

ROOT_LOGGER_NAME

Constructor Summary

Constructors

Constructor	Description
FallbackLogger(FallbackLogger.LoggingLevel level)	Creates a logger with logging level.

Method Summary

Modifier and Type	Method	Description
void	debug(java.lang.String msg)
void	debug(java.lang.String format, java.lang.Object arg)
void	debug(java.lang.String format, java.lang.Object... arguments)
void	debug(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	debug(java.lang.String msg, java.lang.Throwable th)
void	debug(org.slf4j.Marker marker, java.lang.String msg)
void	debug(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg)
void	debug(org.slf4j.Marker marker, java.lang.String format, java.lang.Object... arguments)
void	debug(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	debug(org.slf4j.Marker marker, java.lang.String msg, java.lang.Throwable th)
private void	emit(FallbackLogger.LoggingLevel level, java.lang.String message)	Emit a message on a given logging level.
private void	emitWithArgs(FallbackLogger.LoggingLevel level, java.lang.String format, java.lang.Object... arguments)	Emit a formatted message on a given logging level.
void	error(java.lang.String msg)
void	error(java.lang.String format, java.lang.Object arg)
void	error(java.lang.String format, java.lang.Object... arguments)
void	error(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	error(java.lang.String msg, java.lang.Throwable th)
void	error(org.slf4j.Marker marker, java.lang.String msg)
void	error(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg)
void	error(org.slf4j.Marker marker, java.lang.String format, java.lang.Object... arguments)
void	error(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	error(org.slf4j.Marker marker, java.lang.String msg, java.lang.Throwable th)
static org.slf4j.Logger	getLogger(org.slf4j.Logger logger, java.lang.Class<?> cls, FallbackLogger.LoggingLevel fallbackLevel)	Creates a logger instance if logger is null.
java.lang.String	getName()
void	info(java.lang.String msg)
void	info(java.lang.String format, java.lang.Object arg)
void	info(java.lang.String format, java.lang.Object... arguments)
void	info(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	info(java.lang.String msg, java.lang.Throwable th)
void	info(org.slf4j.Marker marker, java.lang.String msg)
void	info(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg)
void	info(org.slf4j.Marker marker, java.lang.String format, java.lang.Object... arguments)
void	info(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	info(org.slf4j.Marker marker, java.lang.String msg, java.lang.Throwable th)
boolean	isDebugEnabled()
boolean	isDebugEnabled(org.slf4j.Marker marker)
boolean	isErrorEnabled()
boolean	isErrorEnabled(org.slf4j.Marker marker)
boolean	isInfoEnabled()
boolean	isInfoEnabled(org.slf4j.Marker marker)
boolean	isTraceEnabled()
boolean	isTraceEnabled(org.slf4j.Marker marker)
boolean	isWarnEnabled()
boolean	isWarnEnabled(org.slf4j.Marker marker)
void	trace(java.lang.String msg)
void	trace(java.lang.String format, java.lang.Object arg)
void	trace(java.lang.String format, java.lang.Object... arguments)
void	trace(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	trace(java.lang.String msg, java.lang.Throwable th)
void	trace(org.slf4j.Marker marker, java.lang.String msg)
void	trace(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg)
void	trace(org.slf4j.Marker marker, java.lang.String format, java.lang.Object... argArray)
void	trace(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	trace(org.slf4j.Marker marker, java.lang.String msg, java.lang.Throwable th)
void	warn(java.lang.String msg)
void	warn(java.lang.String format, java.lang.Object arg)
void	warn(java.lang.String format, java.lang.Object... arguments)
void	warn(java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	warn(java.lang.String msg, java.lang.Throwable th)
void	warn(org.slf4j.Marker marker, java.lang.String msg)
void	warn(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg)
void	warn(org.slf4j.Marker marker, java.lang.String format, java.lang.Object... arguments)
void	warn(org.slf4j.Marker marker, java.lang.String format, java.lang.Object arg1, java.lang.Object arg2)
void	warn(org.slf4j.Marker marker, java.lang.String msg, java.lang.Throwable th)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

level

private FallbackLogger.LoggingLevel level

Constructor Detail

FallbackLogger

public FallbackLogger(FallbackLogger.LoggingLevel level)

Creates a logger with logging level.

Parameters:

level - the level to use

Method Detail

getLogger

public static org.slf4j.Logger getLogger(org.slf4j.Logger logger,
                                         java.lang.Class<?> cls,
                                         FallbackLogger.LoggingLevel fallbackLevel)

Creates a logger instance if logger is null. This may be an official one for cls or, if only disabled default loggers are available, a fallback logger with given fallbackLevek.

Parameters:

logger - the actual logger, may be null for none

cls - the class to return an official logger for

fallbackLevel - if there is no configured official logger, return a fallback logger for the given level

Returns:

the new logger instance or logger

getName

public java.lang.String getName()

Specified by:

getName in interface org.slf4j.Logger

emit

private void emit(FallbackLogger.LoggingLevel level,
                  java.lang.String message)

Emit a message on a given logging level.

Parameters:

level - the level

message - the message

emitWithArgs

private void emitWithArgs(FallbackLogger.LoggingLevel level,
                          java.lang.String format,
                          java.lang.Object... arguments)

Emit a formatted message on a given logging level.

Parameters:

level - the level

format - the message to be formatted

arguments - the arguments

isTraceEnabled

public boolean isTraceEnabled()

Specified by:

isTraceEnabled in interface org.slf4j.Logger

trace

public void trace(java.lang.String msg)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(java.lang.String format,
                  java.lang.Object arg)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(java.lang.String format,
                  java.lang.Object... arguments)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

trace in interface org.slf4j.Logger

isTraceEnabled

public boolean isTraceEnabled(org.slf4j.Marker marker)

Specified by:

isTraceEnabled in interface org.slf4j.Logger

trace

public void trace(org.slf4j.Marker marker,
                  java.lang.String msg)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object... argArray)

Specified by:

trace in interface org.slf4j.Logger

trace

public void trace(org.slf4j.Marker marker,
                  java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

trace in interface org.slf4j.Logger

isDebugEnabled

public boolean isDebugEnabled()

Specified by:

isDebugEnabled in interface org.slf4j.Logger

debug

public void debug(java.lang.String msg)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(java.lang.String format,
                  java.lang.Object arg)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(java.lang.String format,
                  java.lang.Object... arguments)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

debug in interface org.slf4j.Logger

isDebugEnabled

public boolean isDebugEnabled(org.slf4j.Marker marker)

Specified by:

isDebugEnabled in interface org.slf4j.Logger

debug

public void debug(org.slf4j.Marker marker,
                  java.lang.String msg)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object... arguments)

Specified by:

debug in interface org.slf4j.Logger

debug

public void debug(org.slf4j.Marker marker,
                  java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

debug in interface org.slf4j.Logger

isInfoEnabled

public boolean isInfoEnabled()

Specified by:

isInfoEnabled in interface org.slf4j.Logger

info

public void info(java.lang.String msg)

Specified by:

info in interface org.slf4j.Logger

info

public void info(java.lang.String format,
                 java.lang.Object arg)

Specified by:

info in interface org.slf4j.Logger

info

public void info(java.lang.String format,
                 java.lang.Object arg1,
                 java.lang.Object arg2)

Specified by:

info in interface org.slf4j.Logger

info

public void info(java.lang.String format,
                 java.lang.Object... arguments)

Specified by:

info in interface org.slf4j.Logger

info

public void info(java.lang.String msg,
                 java.lang.Throwable th)

Specified by:

info in interface org.slf4j.Logger

isInfoEnabled

public boolean isInfoEnabled(org.slf4j.Marker marker)

Specified by:

isInfoEnabled in interface org.slf4j.Logger

info

public void info(org.slf4j.Marker marker,
                 java.lang.String msg)

Specified by:

info in interface org.slf4j.Logger

info

public void info(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object arg)

Specified by:

info in interface org.slf4j.Logger

info

public void info(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object arg1,
                 java.lang.Object arg2)

Specified by:

info in interface org.slf4j.Logger

info

public void info(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object... arguments)

Specified by:

info in interface org.slf4j.Logger

info

public void info(org.slf4j.Marker marker,
                 java.lang.String msg,
                 java.lang.Throwable th)

Specified by:

info in interface org.slf4j.Logger

isWarnEnabled

public boolean isWarnEnabled()

Specified by:

isWarnEnabled in interface org.slf4j.Logger

warn

public void warn(java.lang.String msg)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(java.lang.String format,
                 java.lang.Object arg)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(java.lang.String format,
                 java.lang.Object... arguments)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(java.lang.String format,
                 java.lang.Object arg1,
                 java.lang.Object arg2)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(java.lang.String msg,
                 java.lang.Throwable th)

Specified by:

warn in interface org.slf4j.Logger

isWarnEnabled

public boolean isWarnEnabled(org.slf4j.Marker marker)

Specified by:

isWarnEnabled in interface org.slf4j.Logger

warn

public void warn(org.slf4j.Marker marker,
                 java.lang.String msg)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object arg)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object arg1,
                 java.lang.Object arg2)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(org.slf4j.Marker marker,
                 java.lang.String format,
                 java.lang.Object... arguments)

Specified by:

warn in interface org.slf4j.Logger

warn

public void warn(org.slf4j.Marker marker,
                 java.lang.String msg,
                 java.lang.Throwable th)

Specified by:

warn in interface org.slf4j.Logger

isErrorEnabled

public boolean isErrorEnabled()

Specified by:

isErrorEnabled in interface org.slf4j.Logger

error

public void error(java.lang.String msg)

Specified by:

error in interface org.slf4j.Logger

error

public void error(java.lang.String format,
                  java.lang.Object arg)

Specified by:

error in interface org.slf4j.Logger

error

public void error(java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

error in interface org.slf4j.Logger

error

public void error(java.lang.String format,
                  java.lang.Object... arguments)

Specified by:

error in interface org.slf4j.Logger

error

public void error(java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

error in interface org.slf4j.Logger

isErrorEnabled

public boolean isErrorEnabled(org.slf4j.Marker marker)

Specified by:

isErrorEnabled in interface org.slf4j.Logger

error

public void error(org.slf4j.Marker marker,
                  java.lang.String msg)

Specified by:

error in interface org.slf4j.Logger

error

public void error(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg)

Specified by:

error in interface org.slf4j.Logger

error

public void error(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object arg1,
                  java.lang.Object arg2)

Specified by:

error in interface org.slf4j.Logger

error

public void error(org.slf4j.Marker marker,
                  java.lang.String format,
                  java.lang.Object... arguments)

Specified by:

error in interface org.slf4j.Logger

error

public void error(org.slf4j.Marker marker,
                  java.lang.String msg,
                  java.lang.Throwable th)

Specified by:

error in interface org.slf4j.Logger