Problems with log4j appender (perf4j) in JBossAS 6.1.0Final

[andeisen]

Hello,

I spent some time to figure out how to enable log4j-appenders in the jboss-logging.xml configuration on 6.1.0Final. Basically the fixes provided by https://issues.jboss.org/browse/JBAS-8791 worked for me. But I still have some problems:

I would like to enable the perf4j-logging for my EJBs. For that, I need a log4j-appender ( org.perf4j.log4j.AsyncCoalescingStatisticsAppender ) that logs the collected performance statements asynchronously to an output file. For that, the statements are buffered and redirected to a fileappender.

My current configuration is:

  <log4j-appender name="CoalescingStatistics"
              class="org.perf4j.log4j.AsyncCoalescingStatisticsAppender">
        <level name="DEBUG"/>
        
        <!--
          The TimeSlice option is used to determine the time window for which
          all received StopWatch logs are aggregated to create a single
          GroupedTimingStatistics log. Here we set it to 10 seconds, overriding
          the default of 30000 ms
        -->
        <!-- old: <param name="TimeSlice" value="10000"/>-->
        <properties>
          <property name="timeSlice">5000</property>
        </properties>
        <!--old: <appender-ref ref="fileAppender"/>-->
        <sub-handlers>
          <handler-ref name="perf4jFile"/>
        </sub-handlers>
    </log4j-appender>

The perf4jFile-appender is just a log4j FileAppender, which is defined by that code:

<!-- create new FileAppender for log4j - to use with CoalescingStatisticsAppender
        of perf4j
    -->
    <log4j-appender name="perf4jFile" class="org.apache.log4j.DailyRollingFileAppender">
      <error-manager>
         <only-once/>
      </error-manager>

      <level name="DEBUG"/>
    
   <properties>
         <property name="datePattern">'.'yyyy-MM-dd</property>
         <property name="file">${jboss.server.log.dir}/perf4jFile.log</property>
         <property name="append">true</property>
    </properties>

      <formatter>
         <pattern-formatter pattern="%m%n"/>
      </formatter>
   </log4j-appender>

If I use the perf4jFile-appender directly by writing this:

<logger category="org.perf4j.TimingLogger" use-parent-handlers="false">
      <level name="DEBUG"/>
      <handlers>
        <!--<handler-ref name="CoalescingStatistics"/>-->
        <handler-ref name="CONSOLE"/>
        <handler-ref name="perf4jFile"/>
      </handlers>
  </logger>

it works - the perf4j logging statements are written toe to perf4jFile output file. If I uncomment the CoalescingStatistics-appender like this:

<logger category="org.perf4j.TimingLogger" use-parent-handlers="false">
      <level name="DEBUG"/>
      <handlers>
        <handler-ref name="CoalescingStatistics"/>
        <handler-ref name="CONSOLE"/>
        <!--<handler-ref name="perf4jFile"/>-->
      </handlers>
  </logger>

nothing happens.

My question now: Is the source code of log4j-appender name="CoalescingStatistics ok, or is there another way to deal with the log4j attribute "appender-ref"?

Many thanks in advance!