Hey folks,
Running into a really weird issue with a new Lambda function we spun up to process Genesys Cloud webhooks. We’re using Node.js 18.x, and the function triggers fine when I test it locally with the sample payload from the docs. But once I deployed it and pointed the webhook at the Lambda ARN, the handler starts choking on the payload structure.
The symptom is that event.body comes through as a string, which I expected. I parse it with JSON.parse(event.body), but then when I try to access parsedBody.conversationId, it’s undefined. I’m logging the entire parsedBody object, and it looks like a standard Genesys webhook event. The event object has all the right Lambda wrapper stuff, but the actual Genesys data seems nested differently than I thought, or maybe I’m missing a header check?
Here’s the relevant chunk of the handler:
exports.handler = async (event) => {
console.log('Received event:', JSON.stringify(event, null, 2));
try {
const body = JSON.parse(event.body);
console.log('Parsed body:', JSON.stringify(body, null, 2));
const convId = body.conversationId;
if (!convId) {
throw new Error('Missing conversationId in payload');
}
// ... rest of logic
return { statusCode: 200, body: 'OK' };
} catch (err) {
console.error('Error processing webhook:', err);
return { statusCode: 500, body: 'Error' };
}
};
The logs show the Parsed body has a data property that contains the actual event details, not the root level. But the docs aren’t super clear on whether the root object changes based on the event type. I’m seeing body.data.conversationId works, but that feels fragile if the schema shifts. Is there a standard way to unwrap these payloads in Node.js Lambdas without hardcoding the data key? Or am I missing something obvious about how Genesys structures the POST body for webhook endpoints?