amazon web services - Get URL that invoked the AWS HTTP API using Lambda - Node.js

Question

I want to build some routes for my todos, example:

• List
• Get
• etc

So in order to do this I thought to check for the URL invoking the API (please if there is a better way call me out). I'm trying it out in a simple lambda first but can't get the URL, this is what I tried:

'use strict';

exports.handler = async (event) => {
    
    let itsCallingFrom = event.requestContext.pathParameters;
    
    const response = {
        statusCode: 200,
        body: JSON.stringify('Calling from: ' + itsCallingFrom),
    };
    return response;
};

This is how my Route looks:

/listalltodos
    GET

This is what the event shows:

This is what I get: "Calling from: undefined"

Any idea how to get it?

Thanks

question from:https://stackoverflow.com/questions/65866667/get-url-that-invoked-the-aws-http-api-using-lambda-node-js

Answer 1

The form of event object in HTTP api is shown here. It does not have a parameter such as pathParameters.

Instead you can use:

• event.rawQueryString
• event.rawPath

Or if you just want parameters then you can use:

• event.queryStringParameters - this will not be present if parameters are not provided, so you can use:

let itsCallingFrom = event.queryStringParameters || 'none';