If that helps we have open-sourced the plugin there: https://github.com/reelevant-tech/pinot-pubsub-plugin

Why not contribute this to the main Pinot project?

We still didnt put anything in our prod env, so i believe a little bit early

If you open a PR against the main repo, you might get early feedback as well.

We are still not sure if we want to commit to the pubsub of gcp too, is it still worth to upstream it if we don't use it ourselves ?

Yeah, as long as the impl is good, I am sure someone else might find it useful.

I've opened a PR there as advised: https://github.com/apache/incubator-pinot/pull/6450

👍