I would like to know if it's possible to add a feature to the jboss log4j implementation to add a specified prefix to each line of a stacktrace as described in the following link?

http://stackoverflow.com/questions/3459089/is-it-possible-to-prefix-every-line-of-a-stacktrace-in-log4j
(See the answer #2)

This can be used on the syslog end to split logs by profile, application, etc...

To implement it would require an additional property to be added to the SyslogAppender and a new version of the log4j ThrowableRenderer to add the prefix something like this:

List<String> l = new LinkedList<String>();
for (StackTraceElement ste: t.getStackTrace())
{
l.add("myPrefix " + ste.toString());
}
return (String[]) l.toArray();

<appender name="SYSLOG" class="org.apache.log4j.net.SyslogAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
<param name="Facility" value="LOCAL1"/>
<param name="FacilityPrinting" value="false"/>
<param name="SyslogHost" value="192.168.0.10"/>
<param name="SyslogPrefix" value="myPrefix"/> <-- New property
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="jbossas_profile1: %-5p [%c] (%t) %m%n"/>
</layout>
</appender>