Dropwizard support for 1.0.0

[jmachalica]

Is it possible to integrate this client version with dropwizard? I would like to expose its metrics for prometheus scraping. Should I use an archived simple client?

[fstab]

Hi @jmachalica, the simpleclient_dropwizard module didn't make it into the 1.0.0 release, it's still on version 0.16.0. We are planning to port it over, but it will take some time. You have three options:

1. Keep using 0.16.0 until a 1.x version of simpleclient_dropwizard is available. There's nothing wrong with 0.16.0.
2. If you want to use prometheus-metrics-core 1.0.0 for new metrics but keep using simpleclient_dropwizard 0.16.0 for Dropwizard metrics, you can use both versions in parallel. Use the prometheus-metrics-simpleclient-bridge module as described here: https://prometheus.github.io/client_java/migration/simpleclient/.
3. We are looking for volunteers to help us port the remaining 0.16.0 modules over to 1.0.0. So if you want to speed things up, feel free to create a PR. All you need is a MultiCollector for Dropwizard metrics that produces snapshots as defined in prometheus-metrics-model, see https://prometheus.github.io/client_java/internals/model/. I'm happy to help.

[bmeier-pros]

Can we split this into metrics 4 and metrics 5 tickets? The change merged only supports metrics 5, we need metrics 4 for Dropwizard 3 and 4 support.

[twbecker]

Agree Dropwizard users have kind of been left in the lurch with the 1.0 release. Dropwizard 5 isn't released and doesn't even seem imminent.

[kingster]

Let me take a stab at dw metrics4 and see what I get working with.

One possible option is to duplicate the code but that is what I don't like, so need to figure out how the exporter can work with both versions.

Any suggestions? @fstab

[kingster]

@twbecker @bmeier-pros

Dropwizard metrics 4.x version is now supported via the io.prometheus:prometheus-metrics-instrumentation-dropwizard package.

[bmeier-pros]

@kingster - one comment, it appears the new module is missing from the bom for 1.3.5.

[zeitlinger]

@kingster - one comment, it appears the new module is missing from the bom for 1.3.5.

see #1249