I'm trying to add log format parameters and filter logs by added parameters. 
<br>
<br>for example, 
<br>
<br>original log format : 
<br>PRI | HEADER (TIMESTAMP HOST)|MSG(logtag+ messages)
<br>
<br>In my program, log is generated like this : 
<br>====>> PRI | HEADER | Logtag: |TASKNAME | MSG 
<br>                                   ^^^^^^^^
<br>                                  user-specific task 
<br>
<br>In syslog-ng, Log is filtered by LEVEL/FACILITY/MSG(by matching service) but, I want syslog-ng to recoginize TASKNAME field. 
<br>
<br>(finally, I'll get statistics on the [taskname] )
<br>
<br>If I have to modify sources, let me know what sources(?) I should handle. 
<br>
<br>please, Help.. 
<br>
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