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Subject: How to add extra information to log entries transparently?
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maximilian.stoerzer@capgemini-sdm.com

11/20/2008 3:56 PM  
Hello everybody,
 
I have an application with a vast number of existing log statements. Now we have the new requirement to prefix each log entry depending on some user input (i.e. no static text).
 
An example: In the application, there is a statement
    log.debug('foo')
and we expect a log entry like
    abcdef: foo
where abcdef is a hash we generate on the fly.
 
Unfortunately I did not use a wrapper class, and obviously I don't want to modify all log statements.
Is there a way to add a custom Filter or Layout to Log4Net in order to achieve this task? How can this be done?
I also thought about using an object renderer, but seemingly for strings the renderers are bypassed, making them unusable for the task at hand.
 
Thanks for any hints!
 
Best regards,
    Max
 
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