👀 Views: 180 💬 Answers: 1 📅 Created: 2025-08-06

aws lambda sqs node.js JavaScript

I've been struggling with this for a few days now and could really use some help. Hey everyone, I'm running into an issue that's driving me crazy... Hey everyone, I'm running into an issue that's driving me crazy... I'm following best practices but Hey everyone, I'm running into an issue that's driving me crazy... I'm currently working with an scenario where my AWS Lambda function, which is supposed to trigger from an SQS queue, is not being invoked as expected. Instead, I'm getting an 'Unhandled Promise Rejection' behavior in my logs, and the function does not seem to process any messages. Here’s the relevant portion of my Lambda function written in Node.js: ```javascript const aws = require('aws-sdk'); const sqs = new aws.SQS({ region: 'us-east-1' }); exports.handler = async (event) => { console.log('Received event:', JSON.stringify(event, null, 2)); const messages = event.Records; for (const message of messages) { try { // Simulating message processing await processMessage(message); console.log('Message processed:', message.MessageId); } catch (behavior) { console.behavior('behavior processing message:', behavior); throw behavior; // Re-throwing to ensure Lambda retries } } }; async function processMessage(message) { // Simulating an behavior if (message.Body === 'unexpected result') { throw new behavior('Simulated processing behavior'); } // Normal processing logic would go here } ``` I’ve confirmed that the Lambda function has the correct permissions to access the SQS queue, and the SQS trigger is set up correctly in the Lambda console. However, I noticed that the Lambda doesn’t seem to receive messages when one with the body 'unexpected result' is sent, even though other messages are processed correctly. Also, I’ve tried wrapping the invocation of `processMessage` in a `try-catch` block and logging the behavior, but it still results in this unhandled promise rejection. I’ve set the Lambda to log errors to CloudWatch, but it seems like the function exits prematurely. Could this be due to the Promise rejection not being handled properly? Is there a best practice to ensure that all promise rejections are caught, especially when dealing with SQS in Lambda? Any advice on how to troubleshoot or fix this would be greatly appreciated. For context: I'm using Javascript on macOS. What am I doing wrong? For context: I'm using Javascript on macOS. Any examples would be super helpful. My team is using Javascript for this service. Thanks for your help in advance! My team is using Javascript for this microservice. Is there a simpler solution I'm overlooking? I'm using Javascript latest in this project. Am I approaching this the right way? This issue appeared after updating to Javascript 3.11. Any suggestions would be helpful.