Re: [logback-user] Filtering "unknown" mdc discriminator events

22 Sep 2012

      Wow, that was quick! And simple! Yes, of course that fixed it.

However, one good answer deserves another question:

I now have empty logs being created, which is a step in the right 
direction. But can I eliminate the "unknown" logs completely? Right now 
every time my app fires up it creates an "unknown" directory and the 
empty timestamped log. Since this is a long running batch application, I 
will quickly end up with a bunch of these and it would be great if I 
could prevent them completely.

Possible?

Thanks very much for your quick response.

Fred

On 9/22/2012 12:33 PM, ceki wrote:
...
The <OnMismatch> and <OnMatch> elements should be embedded in the 
<filter> element, and not the <evaluator> element.
On 22.09.2012 18:16, Fred Toth wrote:
...
Hi,
This has been written about before in this list, and I thought it would
be easy, but I'm getting nowhere. Can anyone suggest what I'm doing
wrong? I can confirm that my filter code is running (I see the print
statements) but no matter what I return, I still end up with a log like
"unknown/batchqc-<timestamp>" containing plenty of log data.
I would like to eliminate these logs completely, and write logs using
this sifter only when articlePath is set.
The status listener is reporting:
12:03:35,652 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@25:37
- no applicable action for [OnMismatch], current pattern is
[[configuration][appender][filter][evaluator][OnMismatch]]
12:03:35,652 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@26:34
- no applicable action for [OnMatch], current pattern is
[[configuration][appender][filter][evaluator][OnMatch]]
What am I missing?
Config:
<configuration>
<statusListener
class="ch.qos.logback.core.status.OnConsoleStatusListener"/>
<timestamp key="bySecond" datePattern="yyyy-MM-dd-HH-mm-ss" />
     <timestamp key="byDate" datePattern="yyyy-MM-dd" />
<appender name="ARTICLESIFT"
class="ch.qos.logback.classic.sift.SiftingAppender">
         <discriminator>
             <key>articlePath</key>
             <defaultValue>unknown</defaultValue>
         </discriminator>
         <sift>
             <appender name="ARTICLESIFT-APPENDER"
class="ch.qos.logback.core.FileAppender">
                 <filter
class="ch.qos.logback.core.filter.EvaluatorFilter">
                     <evaluator
class="ch.qos.logback.classic.boolex.JaninoEventEvaluator">
                         <expression>
System.out.println("MDC: " + mdc + " " + mdc.get("articlePath"));
if (mdc == null
     || mdc.get("articlePath") == null
     || ((String)mdc.get("articlePath")).contains("unknown"))
         return false;
return true;
                         </expression>
<OnMismatch>NEUTRAL</OnMismatch>
                         <OnMatch>DENY</OnMatch>
                     </evaluator>
                 </filter>
<file>${articlePath}/batchqc-${bySecond}.log</file>
                 <append>false</append>
                 <encoder
class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                     <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level
%logger{0} - %msg%n
                     </pattern>
                 </encoder>
             </appender>
         </sift>
     </appender>
<appender name="TSFILE" class="ch.qos.logback.core.FileAppender">
         <file>logs/batchqc-${byDate}.log</file>
         <append>true</append>
         <encoder>
             <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %logger{0} -
%msg%n</pattern>
         </encoder>
     </appender>
<root level="info">
         <appender-ref ref="TSFILE" />
         <appender-ref ref="ARTICLESIFT" />
     </root>
</configuration>
Thanks,
Fred