[jboss-jira] [JBoss JIRA] (LOGMGR-45) Have loggers inherit filters

[Kelly Dolan (JIRA)]

Kelly Dolan created LOGMGR-45:
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             Summary: Have loggers inherit filters
                 Key: LOGMGR-45
                 URL: https://issues.jboss.org/browse/LOGMGR-45
             Project: JBoss Log Manager
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
            Reporter: Kelly Dolan
            Assignee: David Lloyd


I had the need to log a specific INFO message and only that message.  This message was logged from a class whose category is org.jboss.as.server.  To get the message to even ask itself to be logged, I had to add the following to the log configuration (my STATUS handler was a simple console-handler).  Given this, I saw a lot of INFO+ messages for the org.jboss.as.server category as well as other subcategories (e.g., org.jboss.as.server.deployment).

<logger category="org.jboss.as.server">
  <level name="INFO"/>
  <handlers>
    <handler name="STATUS"/>
  </handlers>
</logger>

Next, I tried to restrict it by adding the <filter> element to the <logger>.  

<filter>
  <match pattern="JBAS018559"/>
</filter>

This did not appear to work...it made no impact on what was logged.  So I moved it to the <console-handler> which only logged what I wanted it to log.

In the forum post, it was determined the <filter> on the <logger> is not inherited.  As a result, the <filter> is only applied to the specified category, not any of its subcategories.

This request is to change the <logger> such that its <filter> is applied to all categories it applies itself to.  From my point of view (and I realize it may be a limited view at this time), this keeps it consistent (e.g., <level> applies to all categories, <handler> applies to all categories).  W/ no documentation on this feature, inheritance was assumed.

Also, given it currently does not apply to all categories, does it make log configurations more complicated?  In my case, I was able to easily move it to my handler but no one else was referencing it.  If it had been in use by someone else, would I have had to create a new handler to be referenced only by the logger?  Or would the filter have been able to be written in more complexity to allow logging of all it currently logs + one message - everything the new logger lets pass through?  Or could one create additional loggers for sub-categories to set level=ERROR? (All rhetorical questions.)

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