February 2024 - logback-user

Help with FileName and FilePAttern syntax:
by Aniruddha Shevade 29 Feb '24

29 Feb '24

Hello I am trying to migrate from log4j2 to logback. I am trying to find equivalent syntax for filename and filepatterns in this case log4j2.xml <RollingFile name="myLOg" *fileName="/log/${env1}-{{*myEnv|||@mydir@*}}-app.log"* .../> When i use something like this I get an exception saying invalid Repition. I m not sure what the above code was intended to do. 1. How can i convert this fileName to a valid one in logback ? 2. I do understand it will resolve ${env1} properly from environment variables. The "myENv" is being defined in a .properties file being loaded by the application. I have seens examples in logback.xml like <RollingFile name="myLOg" *fileName="/log/${env1}-:[myEnv]-app.log"* .../> what* does the :[myEnv] do here ? Would it resolve to a property set in a .* properties* file?* *ALso not sure what the @ symbol means in the log4j, and if it has any equivalent here?* thanks for any pointers Best Regards Ani

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Xml to Java code, logstash encoder
by kypdk 14 Feb '24

14 Feb '24

Hello Guys I want to create the logstash encoder you see in xml with Java code. But there is no method to set the pattern. Which method should I do? <appender name="STASH" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>logback/uptLog.log</file> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>logback/uptLog.%d{yyyy-MM-dd}.log</fileNamePattern> </rollingPolicy> <encoder class="net.logstash.logback.encoder.LogstashEncoder"> <charset>UTF-8</charset> <pattern> %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %X{requestId} %msg%n%exception{full} </pattern> </encoder> </appender> net.logstash.logback.encoder.LogstashEncoder logstashEncoder = new LogstashEncoder(); logstashEncoder.setContext(loggerContext); logstashEncoder.start(); Regars

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migration from log4j to logback. help with specific log4j.xml property (CronTriggerPolicy>
by Aniruddha Shevade 12 Feb '24

12 Feb '24

Hello I am trying to migrate a application form log4j to logback. I do have the following property defined in the existing log4j2.xml file, I do not see any such equivalent in the logback.xml. *How do I specify something like a CronTriggerPolicy as shown below?* Any help would be appreciated. log4j2.xml <RollingFile name="myLog" fileName="app.log" filePattern"app.log.%d{yyyyMMdd_HHmmzz}Z.log> <Policies> * <CronTiggerPolicy schedule="0 0 * * 1 ?" evaluateOnStartup="true">* <SizeBasedTriggerPolicy size="10MB"/> </Policies> </RollingFile> Best regards Ani

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