Hi,
I am trying to write a new appender for log4j mainly for production web
applications. It would create a separate log, that logs everything in
case the request ended with error and nothing if it completed
successfully. I thought to call it ProblemAppender.
The idea I have is that at the beginnig of every request applications
would call a static method like
ProblemAppender.beginRequest();
and at the end it would call a method like
ProblemAppender.endRequestSuccess() or .endRequestFailure();
Problem appender would gather all logging events in a thread local
buffer and would either forward them to another appender when
endRequestFailure is called or discard them in case of
endRequestSuccess() is called.
I would guess it would be configured something like that.
########
log4j.appender.P1=com.aqris.plogger.ProblemAppender
log4j.appender.P1.targetAppender=TARGET
log4j.appender.TARGET=org.apache.log4j.ConsoleAppender
log4j.appender.TARGET.layout=org.apache.log4j.PatternLayout
log4j.appender.TARGET.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.rootLogger=DEBUG, P1, TARGET
########
Could anyone help me with these questions please?
1) Does this kind of solution perhaps exits already?
2) If not - what would be the way to get a reference to appender
'TARGET' from the context of ProblemAppender.
3) Is this kind of solution a bad idea for some reason?
best regards,
Sander Mägi
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