June 2022 - logback-user - mailman3.qos.ch

Can an appender pattern be varied based on MDC?
by Mark Raynsford 24 Jun '22

24 Jun '22

Hello! I have an application where parts of the application set a "domain" MDC value where appropriate, and unset it later when it's no longer applicable. I'd like to use something like the following when "domain" is set: <appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%level %logger [%X{domain}] %msg%n</pattern> </encoder> </appender> ... and something like the following when "domain" _isn't_ set: <appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%level %logger %msg%n</pattern> </encoder> </appender> Is this possible? I'm not seeing anything in the manual that would suggest it is. -- Mark Raynsford | https://www.io7m.com

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Logs not rolling over
by Trent Phillips 16 Jun '22

16 Jun '22

Have been using logback since 2019. Logback.xml is dated 2019 as last change. One of our apps now has a lot more traffic. For some reason, this is causing the rollover to not happen at/around midnight. It creates the daily .gz file and names it appropriately, but keeps appending to the same file. On Day 1, the unzipped log file is 50 MB. By the end of the second day, it has become 112MB. Everynight or early the next morning, it creates a new gz file but does not truncate the existing file. By Day 7, the unzipped file is now over 500MB and the zip fails everynight. Still no truncation. So, the change is that now this application is getting a lot of hits. Why won't the file truncate, and zip at the end of the day? No changes to the logback.xml. I can try to use the limit file size option, but the multiple files created will potentially break our log analyzer. The only way to truncate the file is to stop and start Tomcat, which we are reluctant to do. What should I do to fix this? THanks, Trent

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Callerdata on error severity
by Niklas Dusenlund 13 Jun '22

13 Jun '22

Hey! Is it possible to only have callerData on the error severity? Cheers

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Fwd: Publish a project that use logback under MIT license
by Stefano 10 Jun '22

10 Jun '22

Hi all, The project is a Java library that contains logback <https://github.com/qos-ch/logback> as a dependency. Since logback is published under EPLv1 I'm wondering if I can publish my project under MIT license. What do you think about it? Thanks, Stefano

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How to change the log level label with slf4j?
by Frédérick Sauvage Rueangpanichpiban 02 Jun '22

02 Jun '22

Hi all I'm trying to change the label in the log. I only want to get {"level":"WARNING","msg":"test"} instead of {"level":"WARN","msg":"test"}. My class is: package com.abc.def; import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.web.servlet.support.SpringBootServletInitializer; @SpringBootApplicationpublic class Application extends SpringBootServletInitializer { private static final Logger LOG = LoggerFactory.getLogger(Application.class); @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { return application.sources(Application.class); } public static void main(String[] args) { LOG.warn("test"); SpringApplication.run(Application.class, args); } } My logback.xml file is: <?xml version="1.0" encoding="UTF-8"?> <configuration> <property resource="application.properties" /> <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder"> <providers> <logLevel> <fieldName>level</fieldName> </logLevel> <arguments> <includeNonStructuredArguments>false</includeNonStructuredArguments> </arguments> <stackTrace> <fieldName>stack</fieldName> </stackTrace> <message> <fieldName>msg</fieldName> </message> </providers> </encoder> </appender> <root level="INFO"> <appender-ref ref="CONSOLE" /> </root> </configuration> I tried many changes but finally I don't any solution except creating a new class that extends net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder. That seems a big stuff for a very small change. I posted already in stackoverflow https://stackoverflow.com/questions/72476767/how-to-change-the-log-level-la… Thanks for helps

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