I was pleased to discover that Google provides a non-Node.JS mechanism to subscribe to and act upon Firestore triggers, Google Cloud Firestore Triggers. I’ve nothing against Node.JS but, for the project i’m developing, everything else is written in Golang. It’s good to keep it all in one language. I’m perplexed that Cloud Functions still (!) only supports Go 1.13 (03-Sep-2019). Even Go 1.14 (25-Feb-2020) was released pre-pandemic and we’re now running on 1.

This works great but it wasn’t clearly documented for non-Firebase users. I assume it will work, as well, for any of the client libraries (not just Golang). Assuming you have some (Golang) code (in this case using the Google Cloud Client Library) that interacts with a Firestore database. Something of the form: package main import ( "context" "crypto/sha256" "fmt" "log" "os" "time" "cloud.google.com/go/firestore" ) func hash(s string) string { h := sha256.