It sounds like what you want is something like https://svn.apache.org/repos/asf/logging/log4j/branches/BRANCH_2_0_EXPERIMENTAL/rgoers/log4j2-core/src/main/java/org/apache/logging/log4j/core/appender/rewrite/ (but for Logback of course) that will let you modify the event.
Ralph On Nov 5, 2011, at 8:59 AM, Steve Cohen wrote: > To answer my own question, a partial answer is the "caller" formatting > specifier. getLocationInformation() may or may not have been necessary, but > with "caller" it no longer is. > > However, > > a common pattern is to funnel logging requests through a LogHelper class to > add some additional functionalities not supported by log4j or logback. The > LogHelper may throw something on the MDC or do some other preprocessing. My > LogHelper also adds methods that apply String.format() on the parameters a la > printf. > > Whatever. Many such things are possible. > > The problem with the caller specifier is that the LogHelper calls (which are > nested) are what it displays, not the true caller in the non-logHelper code. > The depth parameter allows you to eventually see the "real" code but really > we want the logHelper to disappear from the display. That is display only > one element - the one we want. > > I've written a class similar to the > ch.qos.logback.classic.pattern.CallerDataConverter (actually I just grabbed > the source and modified) so that instead of a depth I pass the FQCN of the > LogHelper class and the convert method skips all elements until it finds one > that doesn't match this, and it displays that. > This works very well, but it would be nice if logback offered a better way to > extend its framework to support this kind of conversion. The only reason I > had to resort to reuse by copying instead of reuse by inheritance is that > CallerDataConverter has some private methods that I needed to call from > convert(). If these were protected, it would provide much greater > flexibility. > > Logback should consider supporting such functionality. > > > > > On 11/02/2011 09:54 PM, Steve Cohen wrote: >> how would I replace log4j's LoggingEvent.getLocationInformation() in >> logback? >> _______________________________________________ >> Logback-user mailing list >> Logback-user@qos.ch >> http://mailman.qos.ch/mailman/listinfo/logback-user >> >> > > _______________________________________________ > Logback-user mailing list > Logback-user@qos.ch > http://mailman.qos.ch/mailman/listinfo/logback-user
_______________________________________________ Logback-user mailing list Logback-user@qos.ch http://mailman.qos.ch/mailman/listinfo/logback-user
