AWS Node JS with Request

Question

I am not sure whats wrong here but my lambda below in node js doesnt work

\'use strict\';
exports.handler = function (event, context) {
    try {

    var req =          


        

Answer 1

I am assuming that the code you posted is the code you wrote for lambda. AWS Lambda has specific entry point/function called handler which is runs when lambda is invoked. So every lambda function must have this method to qualify as lambda.

exports.handler = (event, context, callback) => {
}

Also external dependencies of lambda is not automatically pulled. Hence, we need to zip the entire code with dependencies and upload it to lambda for it to work in case we have external dependency.

Example

lambda.js

var req = require('request');
var headers = { 'User-Agent': 'Super Agent/0.0.1' };

// Configure the request
var options = {
    url: 'http://google.com',
    method: 'GET',
    headers: headers
};

exports.handler = (event, context, callback) => {
 req(options, function (error, response, body) {
    console.log(body);
    callback(error);
 });
}

Now let us consider your directory structure to be as

node_modules/
lambda.js
package.json

Now you need to zip this content and upload it to lambda in AWS. Next thing is to point the lambda.js as handler for the present lambda.

If everything is done correctly, you can see now the log in cloudwatch after the lambda is invoked.

References:

http://docs.aws.amazon.com/lambda/latest/dg/get-started-create-function.html http://docs.aws.amazon.com/lambda/latest/dg/nodejs-create-deployment-pkg.html