Hello Ayush, As of this moment, there doesn't exist such a configuration knob in JsonLayout, AFAIK. Though the future is bright! There is an external plugin, log4j2-logstash-layout[1], which delivers what you're looking for (see its maxStringLength parameter) and more! The good news is, we are in the process of merging this external plugin into the Log4j core with a major overhaul and rebranding, JsonTemplateLayout. Implementation is completed, but it is waiting for a final review on a particular aspect by one of the core members, Ralph Goers.
My personal advice would be to go with LogstashLayout and switch to JsonTemplateLayout once it is there. Kind regards. [1] https://github.com/vy/log4j2-logstash-layout On Tue, Jun 30, 2020 at 8:47 PM Ayush Kumar <ay...@finixpayments.com> wrote: > > Not sure where else to ask this question (stackoverflow maybe?), so > apologies if this isn't the right forum. > > We've recently migrated to log4j2 from logback and are using the jsonlayout > for a file appender. These logs are then parsed by scalyr (awesome tool > btw). We've noticed that extended stacktraces in jsonlayout are > ridiculously long. Reaching >20k characters, even with string mode enabled. > This is a problem because there's a max log line size that we can parse > (something around 8k I think). > > I was wondering if there was any way to get the default jsonlayout to cut > down the size of stacktraces. PatternLayout has %ex{n}, and I was hoping > for something that wasn't creating my own layout, rewriting every log > message, or manually making pattern layout be a json format with %enc{json} > and a pattern like {"message": "%enc(%m){json}", ...}. > > I've created a ticket for it as well > https://issues.apache.org/jira/browse/LOG4J2-2879. > > Thanks. --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
