[logback-dev] [JIRA] Closed: (LBCLASSIC-54) TurboFilterAttachableImpl.addTurboFilter() will behave funny if newFilter.turboNext != null

Ceki Gulcu (JIRA) noreply-jira at qos.ch
Tue Dec 30 11:36:38 CET 2008


     [ http://jira.qos.ch/browse/LBCLASSIC-54?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ceki Gulcu closed LBCLASSIC-54.
-------------------------------


> TurboFilterAttachableImpl.addTurboFilter() will behave funny if newFilter.turboNext != null
> -------------------------------------------------------------------------------------------
>
>                 Key: LBCLASSIC-54
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-54
>             Project: logback-classic
>          Issue Type: Bug
>            Reporter: Anton Tagunov
>            Assignee: Logback dev list
>            Priority: Minor
>             Fix For: 0.9.14
>
>         Attachments: ChainIterationPerfTest.java
>
>
> Hi!
> addTurboFilter() sets tailFilter incorrectly if newFilter.nextFilter != null
> Here's what I was trying to do.
> I implement a new TurboFilter.
> This TurboFilter is an interceptor that captures log messages and stores them for analysis.
> This is part of Unit Test. This Unit Test has to ensure that a specific message has been logged.
> This TurboFilter is not configured via logback.xml
> It can be but I don't want that to be mandatory.
> Instead this TurboFilter needs to bind itself to LoggerContext programmatically, via Logback API.
> It also need to bind itself as _the first filter in the chain_.
> Here's how I've tried to do it:
>       final LogbackMessageProducer nuvo = new LogbackMessageProducer(true);
>       
>       /* make sure we're the first in the chain */
>       final TurboFilter oldFirst = tfa.getFirstTurboFilter();
>       nuvo.setNext(oldFirst);
>       
>       tfa.clearAllTurboFilters();
>       tfa.addTurboFilter(nuvo);
> However should somebody else call addTurboFilter(some-other-filter) after this behavior shall be funny.
> Basically all old turbo filters that were bound before my code executed shall be lost.

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