On Tue, 28 Apr 2009, Andreas Altergott wrote: > is there a possibility to increase the log level when an error occurs > and print passed logs with the increased log level?
The Buffer appender implements this: http://search.cpan.org/~mschilli/Log-Log4perl/lib/Log/Log4perl/Appender/Buffer.pm Also, the FAQ has an entry that describes something similar: http://search.cpan.org/dist/Log-Log4perl/lib/Log/Log4perl/FAQ.pm#How_can_I_bundle_several_log_messages_into_one? So, if you modify the "TallyAppender" described there, you could make it ring-buffer a number of messages, and trigger a flush when a higher-level error occurs. Another way of accomplishing this would be logging to two different log files, one with a high log level (e.g. ERROR) and the other one with a log level that provides you with the level of detail desired (e.g. DEBUG). With a log rotator, you can limit the amount of disk space used by the detailed log, and implement ring-buffer-like functionality this way. Hope that helps! -- Mike Mike Schilli m...@perlmeister.com > > This would be very handy if you have a server application running, with > a very low log level, to produce as less logging data as necessary. > > But once an error occurs this data is not sufficient. It would be nice > to log additionally to the stack backtrace all the passed logs with a > higher log level. > > I know that the log output would be buffered. This would mean that even > though a logging event occured there'll be no output immediately. > > There might even be security concerns because the logging data might get > lost, if the server crashes, before the buffer has been flushed. > > But nevertheless this is probably a good feature for server applications > where real time logging is not the top priority. > > > Regards, > Andreas > ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ log4perl-devel mailing list log4perl-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/log4perl-devel
