[logback-dev] [JIRA] Commented: (LBCORE-117) Supply an appender that collects N events on all levels and dumps them to the output when an ERROR is logged

[Pascal Leclercq (JIRA)]

    [ http://jira.qos.ch/browse/LBCORE-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11836#action_11836 ] 

Pascal Leclercq commented on LBCORE-117:
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I have exactly the same requirements. This feature will be extremly usefull I think. Is there any workaround for the time being ?
I think smthg can be done using Evaluators and/or filters but I don't know where to find the last N logging event.

> Supply an appender that collects N events on all levels and dumps them to the output when an ERROR is logged
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: LBCORE-117
>                 URL: http://jira.qos.ch/browse/LBCORE-117
>             Project: logback-core
>          Issue Type: New Feature
>          Components: Appender
>            Reporter: Aaron Digulla
>            Assignee: Logback dev list
>
> For many applications, it's not necessary to log at the levels DEBUG and TRACE all the time. In fact, we usually only do this to be able to debug ERROR events.
> It would be great if there was an appender that would only collect a configurable number of events internally until a message of level ERROR or above is logged. At this time, the appender should dump it's internal state to the log and reset the internal state.

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