[jira] [Created] (LOG4J2-793) Log4jLogger only accepts Log4jMarker, not SLF4J's Marker

["Manfred Dohmen (JIRA)" <ji...@apache.org>]

Manfred Dohmen created LOG4J2-793:
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             Summary: Log4jLogger only accepts Log4jMarker, not SLF4J's Marker
                 Key: LOG4J2-793
                 URL: https://issues.apache.org/jira/browse/LOG4J2-793
             Project: Log4j 2
          Issue Type: Bug
    Affects Versions: 2.0.1
            Reporter: Manfred Dohmen
            Priority: Minor


We're using Log4j 2 via SLF4J. A Logger's log methods have signatures like this:
public abstract void warn(org.slf4j.Marker marker, java.lang.String msg)

If you use an object that is an Marker but not a Log4jMarker this fails at org.apache.logging.slf4j.Log4jLogger.getMarker(Log4jLogger.java:378) due to "cannot be cast to org.apache.logging.slf4j.Log4jMarker".

Use case: we have a defined set of Markers. There's an enum for this, implementing SLF4J's marker interface. Obviously with Log4j we cannot use this enum.

I think an org.apache.logging.slf4j.Log4jLogger cannot expect an org.apache.logging.slf4j.Log4jMarker.






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