👀 Views: 109 💬 Answers: 1 📅 Created: 2025-06-12

gcp pubsub cloud-functions javascript

I'm collaborating on a project where I've looked through the documentation and I'm still confused about I'm working with an scenario where my GCP Cloud Function is not receiving messages from a Pub/Sub subscription that I've set up. The Pub/Sub topic is configured correctly, and the Cloud Function is deployed with the necessary permissions. However, when I publish messages to the topic, the function is not triggered as expected. I’ve set the Pub/Sub push subscription to point directly to my Cloud Function, and the function logs show no activity when I send test messages. I’m using the Node.js 14 runtime for my Cloud Function. The following is the code snippet for my Cloud Function: ```javascript const functions = require('firebase-functions'); exports.processMessage = functions.pubsub.topic('my-topic').onPublish((message) => { const data = message.json; console.log('Received message:', data); }); ``` I’ve double-checked the IAM permissions and the service account used by Pub/Sub has the `Cloud Functions Invoker` role. I also made sure to enable the Pub/Sub API in the GCP console. Despite these configurations, I keep receiving an 'Unrecognized behavior' in the console when trying to troubleshoot the function. I’ve tried redeploying the Cloud Function multiple times and also verified the message format being published to ensure it matches the expected structure. The message published looks like this: ```json { "data": "eyJzdWNjZXNzIjp0cnVlfQ==", "attributes": { "orderId": "12345" } } ``` Is there anything specific I might be missing in the setup? Are there any additional logs I should check or configurations I need to consider to ensure message delivery? Any help would be appreciated! Any pointers in the right direction? I recently upgraded to Javascript 3.11. Any ideas what could be causing this?