pubsub

Cloud Eventarc – Pub/Sub Events tutorial

This sample shows how to create a service that processes Pub/Sub messages.

For more details on how to work with this sample read the Google Cloud Run Node.js Samples README.

Dependencies

• express: Web server framework.
• mocha: [development] Test running framework.
• supertest: [development] HTTP assertion test client.

Quickstart

Deploy your Cloud Run service:

gcloud builds submit \
 --tag gcr.io/$(gcloud config get-value project)/eventarc-pubsub
gcloud run deploy eventarc-pubsub \
 --image gcr.io/$(gcloud config get-value project)/eventarc-pubsub

Create a Cloud Eventarc trigger, which will also create a Pub/Sub topic:

gcloud beta eventarc triggers create pubsub-trigger \
--destination-run-service eventarc-pubsub \
--matching-criteria "type=google.cloud.pubsub.topic.v1.messagePublished"

Test

Test your Cloud Run service by publishing a message to the topic:

TOPIC=$(gcloud beta eventarc triggers describe pubsub-trigger \
--format="value(transport.pubsub.topic)")

echo "Listening to events on topic: $TOPIC"

gcloud pubsub topics publish $TOPIC --message="Events"

You may observe the Run service receiving an event in Cloud Logging:

gcloud logging read "resource.type=cloud_run_revision AND resource.labels.service_name=eventarc-pubsub" --limit 10