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From "Alex Parvulescu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (JCR-3357) Allow TimeSeries to track external counters
Date Fri, 22 Jun 2012 17:28:42 GMT

     [ https://issues.apache.org/jira/browse/JCR-3357?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Parvulescu updated JCR-3357:
---------------------------------

    Attachment: JCR-3357.patch

attached proposed patch.

I'm not 100% sure about the RepositoryStatisticsImpl#createDelegatingRecorder.
It checks for potential race condition, if somebody else created a recorder with the same
name by calling #getOrCreateRecorder and updates to the good delegating recorder,
but it leaves the original caller with a potential stale counter reference.
I prefer stale counter that can be refreshed by calling #get again instead of a read-only
0 value counter.

feedback is welcome.

                
> Allow TimeSeries to track external counters
> -------------------------------------------
>
>                 Key: JCR-3357
>                 URL: https://issues.apache.org/jira/browse/JCR-3357
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: jackrabbit-core
>            Reporter: Alex Parvulescu
>            Assignee: Alex Parvulescu
>         Attachments: JCR-3357.patch
>
>
> We should extend the current TimeSeries to be able to track external counters. 
> This would facilitate the exposure of potentially already existing information by simply
wrapping it into counters that will then be tracked by a normal TimeSeries and exposed as
a repository statistic.

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