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https://issues.apache.org/jira/browse/JAMES-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17210129#comment-17210129
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Benoit Tellier edited comment on JAMES-3405 at 10/8/20, 10:35 AM:
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> To be honest, It's not because I don't find this relevant that we as a
> community should not implement it, you don't need my approval.
I'm not looking for an approval.
I'm looking for middle grounds acceptable by most (if not all) community actors.
was (Author: btellier):
> To be honest, It's not because I don't find this relevant that we as a
> community should not implement it, you don't need my approval.
I'm not looking for an approuval.
I'm looking for middle grounds acceptable by most (if not all) community actor.
> Expose metrics over HTTP
> ------------------------
>
> Key: JAMES-3405
> URL: https://issues.apache.org/jira/browse/JAMES-3405
> Project: James Server
> Issue Type: Improvement
> Components: guice, Metrics, webadmin
> Reporter: Benoit Tellier
> Priority: Major
> Fix For: 3.6.0
>
>
> = Why ?
> I want to export James metrics to prometheus.
> This modern metric stack relies on pulling (prometheus collects the metrics)
> instead of pushing.
> This need had been expressed by [~ieugen] here:
> https://github.com/ieugen/james-self-hosting-sandbox/issues/20
> = How ?
> With the https://github.com/prometheus/client_java dependency expose that as
> part of a `webadmin-metrics` Unauthentictated endpoint.
> Adapt content at
> https://github.com/prometheus/client_java/blob/master/simpleclient_servlet/src/main/java/io/prometheus/client/exporter/MetricsServlet.java
> Be aware that there is some conversion format to be done here:
> {code:java}
> CollectorRegistry collectorRegistry = CollectorRegistry.defaultRegistry;
> new DropwizardExports(environment.metrics()).register(collectorRegistry);
> new MetricsServlet(collectorRegistry)
> {code}
> Source
> https://stackoverflow.com/questions/53408121/which-metrics-are-exported-by-dropwizardmetrics-prometheus-client
> = Definition of done
> {code:java}
> As an admin,
> I have an HTTP endpoint
> Exposing metrics with the prometheus format
> {code}
> Scope: all guice products
> This endpoint should require no authentication in order to be easily
> fetchable by prometheus.
> However as an admin, I need to explicitly enable it in the webadmin
> configuration, it is disabled by default.
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