Re: [logback-user] Evaluator and Layout Pattern

ekkehard Wed, 15 Oct 2008 08:00:06 -0700

Ceki,

just tried my custom MarkerConverter


but I got an error:

ERROR in [EMAIL PROTECTED] -[bundlemarker] is not a valid conversion word


---------
from my config file:

...
 <conversionRule conversionWord="bundlemarker"
     converterClass="org.ekkehard.logback.util.BundleMarkerConverter"/>
...

 <appender name="STDOUT"
   class="ch.qos.logback.core.ConsoleAppender">
   <layout class="ch.qos.logback.classic.PatternLayout">

<Pattern>%d{HH:mm:ss.SSS} %-5level [%logger{40}] %bundlemarker%msg%n</Pattern>

   </layout>
 </appender>

-----
perhaps the problem is that my BundleMarkerConverter class was not found -
all runs under OSGI

what do you think - should I add the import to logback core or logbackclassic ?or could something else be wrong because the error notes that theconversion word wasn't valid

and not that class BundleMarkerConverter wasn't found

thanks

ekke

ekkehard schrieb:

Ceki Gulcu schrieb:

Hi Ekke,

Here is the code for MarkerConverter:

======= Start MarkerConverter.hava ========
package ch.qos.logback.classic.pattern;

import org.slf4j.Marker;

import ch.qos.logback.classic.spi.LoggingEvent;

/**
  * Return the event's marker value(s).
  *
  * @author S&eacute;bastien Pennec
  */
public class MarkerConverter extends ClassicConverter {

   private static String EMPTY = "";

   public String convert(LoggingEvent le) {
     Marker marker = le.getMarker();
     if (marker == null) {
       return EMPTY;
     } else {
       return marker.toString();
     }
   }
}
======= End   MarkerConverter.hava ========

Studying the code above, I would say that you have two options. First,
just remove the [] from the conversion pattern. So instead of writing

"%d %level [%marker] - %msg%n"

as you conversion pattern, just write

"%d %level %marker - %msg%n"

You second option is to write your own converter for handling
markers. You could modify it to return an empty string if there is no
marker, and to return "["+marker.toString()+"]" if there is a marker
in the event. Here is sample code:

package de.gentz-software.logback;

import org.slf4j.Marker;
import ch.qos.logback.classic.spi.LoggingEvent;

public class MyMarkerConverter extends ClassicConverter {

   private static String EMPTY = "";

   public String convert(LoggingEvent le) {
     Marker marker = le.getMarker();
     if (marker == null) {
       return EMPTY;
     } else {
       return "["+marker.toString()+"]";
     }
   }
}


You also need to let logback know about your conversion word. Here is
how:

   <conversionRule conversionWord="myMarker"
            converterClass="de.gentz-software.logback.MyMarkerConverter"/>

Here is a sample config file:

<configuration>
   <conversionRule conversionWord="myMarker"
           converterClass="de.gentz-software.logback.MyMarkerConverter" />
        
   <appender name="STDOUT"
     class="ch.qos.logback.core.ConsoleAppender">
     <layout class="ch.qos.logback.classic.PatternLayout">
       <Pattern>%-4relative [%thread] %myMarker - %msg%n</Pattern>
     </layout>
   </appender>

   <root>
     <level value="debug" />
     <appender-ref ref="STDOUT" />
   </root>
</configuration>


I hope this helps,


of course - thanks :-)

...gives me some more ideas how to solve it best to print OSGIbundle-name and service-name

I put into the Marker-tree

ekke
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Re: [logback-user] Evaluator and Layout Pattern

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