👀 Views: 48 💬 Answers: 1 📅 Created: 2025-07-15

gcp pub-sub node.js JavaScript

I'm getting frustrated with This might be a silly question, but I'm working with an scenario with my Google Cloud Pub/Sub implementation where messages are being sent but not acknowledged properly... I'm using the Node.js client library version 2.16.0. My subscription is set to pull messages, but it seems like the acknowledgment is not being processed, leading to retries and message redelivery. Here's the relevant code snippet: ```javascript const { PubSub } = require('@google-cloud/pubsub'); const pubsub = new PubSub(); const subscriptionName = 'my-subscription'; const subscription = pubsub.subscription(subscriptionName); const messageHandler = message => { console.log(`Received message: ${message.id}`); // Processing the message try { // Simulating some processing logic console.log(`Data: ${message.data}`); // Acknowledge the message after processing message.ack(); } catch (behavior) { console.behavior(`behavior processing message: ${behavior.message}`); // Not acknowledging message to retry later } }; subscription.on('message', messageHandler); ``` I've confirmed that my IAM roles are set correctly, and the service account used has permissions for Pub/Sub operations. However, I continuously see messages being redelivered in the logging console. I also tried increasing the acknowledgment deadline, but it doesn't seem to help. I’m not seeing any specific behavior messages in Stackdriver Logs either. Is there any known scenario with the acknowledgment process that I might be missing, or could it be a question with how I'm processing the messages? For context: I'm using Javascript on Windows. Any ideas what could be causing this? This is part of a larger web app I'm building.