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https://issues.apache.org/jira/browse/HTTPCORE-311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457133#comment-13457133
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Seth Weiner commented on HTTPCORE-311:
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Oleg,
Sure, I'll put together something more comprehensive. I figured I'd start out
raising the issue with a low friction solution. I'll try and get something
together later this week.
Thanks,
Seth
> Retrieval of primitive connection pool stat values
> --------------------------------------------------
>
> Key: HTTPCORE-311
> URL: https://issues.apache.org/jira/browse/HTTPCORE-311
> Project: HttpComponents HttpCore
> Issue Type: New Feature
> Components: HttpCore
> Affects Versions: 4.2.1
> Reporter: Seth Weiner
> Attachments: PollingPrimitivePoolControl.java,
> PollingPrimitivePoolControlTest.java, PrimitiveConnPoolControl.java
>
>
> The org.apache.http.pool.ConnPoolControl interface exposes valuable runtime
> metrics for a connection pool's individual routes and global values. However,
> it uses a bean class, org.apache.http.pool.PoolStats, to exposes the global
> values. This is problematic when trying to monitor these connection pool
> values at runtime since PoolStats is not Serializable and many jmx monitoring
> agents only support primitive values well. The value of the PoolStats class
> seems to be in trying to minimize the amount of locking of the pool required
> to get stats.
> The attached patch includes an interface that extends ConnPoolControl to add
> four methods to return the primitive value for global pool stats. There's an
> implementation of this interface that will delegate all of the
> ConnPoolControl methods to a delegate instance, and support retrieving the
> primitive global values by periodically retrieving and caching a PoolStats
> instance internally. This minimizes the amount of locking required while also
> making it easy to monitor these values.
> It would probably be ideal to incorporate this functionality directly into
> the existing ConnPoolControl interface, but the attached code provides a
> non-invasive way to achieve the desired effect.
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