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javalogginglog4jappender

Log4j custom appender doesn't "log" TRACE event

I am having an odd issue with a custom appender I am writing, it will not log trace LoggingEvents.

The purpose of the appender, is an experiment in writing appenders, and the use of a couple of other technologies (Gradle and assertJ for example), a self learning exercise, and to see if I can improve on using Mockito for capture of log messages during testing. I want the appender to capture all log levels and to that end I have implemented AppenderSkeleton and I set the threshold to ALL in the constructor.

During debug it doesn't even appear as if AppenderSkeleton.doAppend is evening being called.

Is trace different to the other levels somehow?

I have tried with and without SLF4J as my log manager, interestingly SLF4J doesn't seem to support fatal. Log4J version is 1.2.17.

Solution

  • Make sure the level of the logger using the custom appender is also "trace"