Module ch.qos.logback.classic

Package ch.qos.logback.classic.pattern

Class EnsureExceptionHandling

java.lang.Object

ch.qos.logback.classic.pattern.EnsureExceptionHandling

All Implemented Interfaces:

PostCompileProcessor<ILoggingEvent>

public class EnsureExceptionHandling
extends Object
implements PostCompileProcessor<ILoggingEvent>

Constructor Summary

Constructors

Constructor	Description
EnsureExceptionHandling()

Method Summary

Modifier and Type	Method	Description
boolean	chainHandlesThrowable(Converter<ILoggingEvent> head)	This method computes whether a chain of converters handles exceptions or not.
boolean	compositeHandlesThrowable(CompositeConverter<ILoggingEvent> compositeConverter)	This method computes whether a composite converter handles exceptions or not.
void	process(Context context, Converter<ILoggingEvent> head)	This implementation checks if any of the converters in the chain handles exceptions.

Methods inherited from class java.lang.Object

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

Constructor Details

EnsureExceptionHandling

public EnsureExceptionHandling()

Method Details

process

public void process(Context context,
 Converter<ILoggingEvent> head)

This implementation checks if any of the converters in the chain handles exceptions. If not, then this method adds a ExtendedThrowableProxyConverter instance to the end of the chain.

This allows appenders using this layout to output exception information event if the user forgets to add %ex to the pattern. Note that the appenders defined in the Core package are not aware of exceptions nor LoggingEvents.

If for some reason the user wishes to NOT print exceptions, then she can add %nopex to the pattern.

Specified by:

process in interface PostCompileProcessor<ILoggingEvent>

Parameters:

head - The first converter in the chain

chainHandlesThrowable

public boolean chainHandlesThrowable(Converter<ILoggingEvent> head)

This method computes whether a chain of converters handles exceptions or not.

Parameters:

head - The first element of the chain

Returns:

true if it can handle throwables contained in logging events

compositeHandlesThrowable

public boolean compositeHandlesThrowable(CompositeConverter<ILoggingEvent> compositeConverter)

This method computes whether a composite converter handles exceptions or not.

Parameters:

compositeConverter - The composite converter

Returns:

true if it can handle throwables contained in logging events