org.jahia.osgi

Class LogBridge

java.lang.Object

org.jahia.osgi.LogBridge

public class LogBridge
extends Object

This LogBridge is used by a custom pax-logging-service appender to bring back up the log messages inside the OSGi runtime back into DX's core. It also supports SLF4j's MDC bridging through the *MDC methods. These are deliberately not using the MDCAdapter interface to avoid class loader issues (because this class is being exposed by the DX core).

Constructor Summary

Constructors

Constructor and Description
LogBridge()

Method Summary

Modifier and Type	Method and Description
static void	clearMDC() Clears the DX core SLF4j MDC hashtable.
static Map	getCopyOfContextMap() Retrieve a copy of the whole DX core SLF4j MDC hashtable
static String	getMDC(String key) Retrieve an MDC entry from the DX core SLF4j MDC hashtable
static void	log(String loggerName, int level, Object message, Throwable t) Performs logging of the provided message and exception.
static void	putMDC(String key, String value) Put an entry in the DX core SLF4j MDC hashtable
static void	removeMDC(String key) Remove an entry from the DX core SLF4j MDC hashtable
static void	setContextMap(Map contextMap) Set the whole DX core SLF4j MDC hashtable to a new map.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogBridge

public LogBridge()

Method Detail

log

public static void log(String loggerName,
                       int level,
                       Object message,
                       Throwable t)

Performs logging of the provided message and exception.

Parameters:

loggerName - the name of the logger

level - the logging level

message - the message to be logged

t - the exception to be logged

putMDC

public static void putMDC(String key,
                          String value)

Put an entry in the DX core SLF4j MDC hashtable

Parameters:

key - the key name for the entry

value - the value as a String for the MDC entry

getMDC

public static String getMDC(String key)

Retrieve an MDC entry from the DX core SLF4j MDC hashtable

Parameters:

key - the key name for the entry

Returns:

the value for the entry (might be null if none exists)

removeMDC

public static void removeMDC(String key)

Remove an entry from the DX core SLF4j MDC hashtable

Parameters:

key - the key name to be removed. If the key doesn't exist this method doesn't do anything.

clearMDC

public static void clearMDC()

Clears the DX core SLF4j MDC hashtable. Be careful with this method, it is better to remove entries by key name because this method might clear data set by other sub-systems or modules

getCopyOfContextMap

public static Map getCopyOfContextMap()

Retrieve a copy of the whole DX core SLF4j MDC hashtable

Returns:

despite the fact that this is a generic Map (for compatibility reasons), it should normally only contain entries with String objects as key and String objects as values

setContextMap

public static void setContextMap(Map contextMap)

Set the whole DX core SLF4j MDC hashtable to a new map. Be VERY careful with this method, not only will it overwrite data, but you must also make sure you provide a map that only contains keys and values that are String objects.

Parameters:

contextMap - a map that only contains keys and values that are String objects