Bring back PushGateway functionality / autoconfiguration for SB 2.x

[davidkarlsen]

It seems the work that was put into spring-legacy for autoconfiguration of Prometheus Pushgateway was not ported to the spring-boot 2.x code. It would be great to have it there too, as one sometimes need the push-gateway (e.g. for batch-jobs).

Also see https://stackoverflow.com/questions/49779684/how-to-export-metrics-to-prometheus-via-pushgateway-using-spring-boot-2-0

Should it be added to the micrometer codebase or to spring-boot 2.x?

[jkschneider]

Should it be added to the micrometer codebase or to spring-boot 2.x?

Good question that I don't know the answer to just yet.

[davidkarlsen]

@jkschneider I guess it belongs in SB along with the rest of the code that was ported, look at: spring-projects/spring-boot#14353 - however it would maybe be nice to manage the pushgateway dependency in micrometer alongside the other prometheus libraries?

[jkschneider]

How do you propose Micrometer manage the pushgateway dependency? It would have to be optional to micrometer-registry-prometheus even if the logic were there. Micrometer doesn't produce a BOM. Thoughts?

[jkschneider]

Closing this as it seems to be done in spring-projects/spring-boot#14353