I am upgrading log4j 1 to log4j 2. I have a custom appender created in log4j1 and in append(LoggingEvent event) method I retrieve error stack trace using event.getThrowableStrRep() and append '\t' for each line.
I don't see getThrowableStrRep in log4j2. Could you please help me out how we can do this in log4j2?
If you would like to custom your own throwable message, you need create your own plugin, which should extend org.apache.logging.log4j.core.pattern.LogEventPatternConverter and override the format method.
Learn how to custom plugin with http://logging.apache.org/log4j/2.x/manual/extending.html#PatternConverters.
http://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/pattern/ThrowablePatternConverter.html is a example to convert LogEvent to throwable message.
After you create your own plugin, refer to http://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout for using it.
