[jira] [Commented] (SLING-9589) Expose discovery metrics

["Stefan Egli (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLING-9589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17158525#comment-17158525 ] 

Stefan Egli commented on SLING-9589:
------------------------------------

* Created a [PR|https://github.com/apache/sling-org-apache-sling-discovery-support/pull/1] for review. Note that the implementation is done in the support bundle as it only hooks in via a TopologyEventListener and doesn't need any further changes in the core implementation bundle.

> Expose discovery metrics
> ------------------------
>
>                 Key: SLING-9589
>                 URL: https://issues.apache.org/jira/browse/SLING-9589
>             Project: Sling
>          Issue Type: Improvement
>          Components: Discovery
>    Affects Versions: Discovery Support 1.0.4
>            Reporter: Stefan Egli
>            Assignee: Stefan Egli
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Sling Discovery should expose useful metrics via dropwiard.
> The suggested metrics include:
> * event counts
> * current changing status
> * details about local cluster including number of instances, joins, leaves, leader switches, properties
> * current (local instance's) leader status
> * number of local instance's properties
> * remote cluster details
> This allows integration into downstream monitoring systems.



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