[jira] [Created] (KARAF-2238) Logback appender

["Keren Dong (JIRA)" <ji...@apache.org>]

Keren Dong created KARAF-2238:
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             Summary: Logback appender
                 Key: KARAF-2238
                 URL: https://issues.apache.org/jira/browse/KARAF-2238
             Project: Karaf
          Issue Type: Improvement
            Reporter: Keren Dong


Can we have logback as the default logging implementation of pax-logging-service and have a way to load custom appender?

We want to create a log appender with custom threading control and found that we can't with log4j 1.x (https://issues.apache.org/jira/browse/LOG4J2-3). Karaf's pax-logging-service uses (slf4j+log4j), so we replaced pax-logging-logback. But we find it difficult to do because pax-logging-logback embeds Logback jars inside the bundle without exporting packages and faced with osgi class loading issues. We can do it by defining custom appender fragment for pax-logging-logback host at startup.properties and set the org.ops4j.pax.logging.cfg for logback configuration. But we find that is not convenient for development for having to copy updated Jars to <kavaf_home>/system folder in every iteration.

We are wondering if there is better way dynamically add the appender when we install our bundle on a standard Karaf distribution?

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