Awesome

knative-build-status-notifs

The readme is still work in progress, when in doubt, check the Makefile for now

Simple Cloud Build status notification based on Cloud PubSub event source for Knative.

Cloud Build
Knative
Knative Eventing
Demo App with Cloud Build Trigger
This Cloud Build mobile notification using Pushover

Setup

This setup assumes you already have

GCP project
Configured gcloud CLI
Knative cluster with Eventing and PubSub event source configured
Pushover account with app and user token

Setup Notification Service

First, create a secret with the pushover tokens

kubectl create secret generic build-notif-secrets -n demo \
	--from-literal=SLACK_API_TOKEN=$SLACK_API_TOKEN

Build this notification service

gcloud builds submit \
	--project $GCP_PROJECT \
	--tag gcr.io/${GCP_PROJECT}/build-notif

And edit config/service.yaml with your GCP project ID

container:
    image: gcr.io/YOUR_PROJECT_ID_HERE/build-notif:latest
    imagePullPolicy: Always

After your done all these steps, you should be able to see the build-notif status as Running

$: kubectl get pods -n demo

NAME                                                            READY     STATUS      RESTARTS   AGE
build-notif-00001-deployment-745db8fcb-xf97f                    3/3       Running     0          1h

Setup Build Status Event Source

Assuming you have Knative Eventing and PubSub event source already configured, you can simply connect your PubSub queue that was created automatically by Cloud Build with this simple GcpPubSubSource event source manifest:

apiVersion: sources.eventing.knative.dev/v1alpha1
kind: GcpPubSubSource
metadata:
  name: cloud-build-status-source
spec:
  googleCloudProject: s9-demo
  topic: cloud-builds
  gcpCredsSecret:
    name: google-cloud-key
    key: key.json
  sink:
    apiVersion: eventing.knative.dev/v1alpha1
    kind: Broker
    name: default

Setup Event Trigger

The above event source will publish events into the default broker in that namespace so all we have to do next is to create a Trigger that connects to the Service using this manifest:

apiVersion: eventing.knative.dev/v1alpha1
kind: Trigger
metadata:
  name: slacker-build-status-notifier
spec:
  subscriber:
    ref:
      apiVersion: serving.knative.dev/v1alpha1
      kind: Service
      name: build-notif

Demo

To demo the notifications, simply create a release tag on the repo and you should receive a Pushover notification.

Debug

Check Notification service logs

kail -d build-notif-00006-deployment -n demo -c user-container --since 2h

Check PubSub source logs

kail -p gcppubsub-cloud-build-status-source-... -n demo -c user-container --since 2h

You can find the names of the pods below using

kubectl get pods -n demo

Check build status in Cloud Build

Notifications are triggered only when build actually runs so make sure it was triggered when you tagged your release

Disclaimer

This is my personal project and it does not represent my employer. I take no responsibility for issues caused by this code. I do my best to ensure that everything works, but if something goes wrong, my apologies is all you will get.