Notifiers Golang library

This notifiers Go package exposes a lightweight, zero-magic, optional framework for writing new notifiers and extensions.

To write your own notifier using this package, all you need to do is write something that implements the notifiers.Notifier interface and then pass that to notifiers.Main in your Go executable's main method (or wherever). That Main function will set up your notifiers with your config from GCS and your secrets stored on Secret Manager. Feel free to copy the cloudbuild.yaml and Dockerfile in the notifiers that use this package, like http, to build and deploy your own notifier.

In order to filter on specific notifications, you can use the notifiers.EventFilter interface, again, optionally. This library provides two EventFilter implementations:

• notifiers.CELPredicate: This filter uses a compiled-at-startup CEL program string to filter on incoming notifications. It uses a single input variable named build, which is the incoming Build proto from the Pub/Sub notifications. For example, you can write a filter like build.status == Build.Status.SUCCESS || "special" in build.tags to only notify on events that are successful or have the "special" build tag.