[logback-dev] [JIRA] Created: (LBCLASSIC-292) Support optional include files

Joachim Durchholz (JIRA) noreply-jira at qos.ch
Thu Sep 8 17:46:16 CEST 2011

Support optional include files

                 Key: LBCLASSIC-292
                 URL: http://jira.qos.ch/browse/LBCLASSIC-292
             Project: logback-classic
          Issue Type: Improvement
          Components: joran
    Affects Versions: 0.9.26
            Reporter: Joachim Durchholz
            Assignee: Logback dev list
            Priority: Minor

Logback emits a warning if a file named in <include/> isn't present.

Sometimes, an included configuration file is purely optional. E.g. I would want to mail a more verbose configuration to a customer who has some mysterious error where the standard logging simply isn't detailed enough.

Unfortunately, this means that in the standard case, I'll be spammed with the missing file warning, plus heaps of INFO messages. This might distract from relevant logback configuration problems.

Suggestion: extend <include/> so that it accepts <include optional="true" ... />. If an include is optional, it will not generate error messages if the requested configuration is not present.
The loading code might want to differentiate between "does not exist" (to suppress the message) and other problems (which probably should still be reported).

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