AWS Cloud9 Lambda安装node.js模块

Question

I'm having issues trying to install node modules in my lambda project in AWS Cloud9.

I ran the commands

npm install --save request
npm install --save request-promise

I keep getting "Error: Cannot find module 'request-promise'".

I have the following code.

var rp = require('request-promise');

It is structured like this

-Lambda Env

--getMergedProducts

--node_modules

Answer 1

This is not how Lambda should be used. I spoke with an AWS solutions architect and he set things straight for me.

Remember that each function is intended to stand on its own, so it needs to be packaged on its own. Each function would have its own package.json and node_modules as each function runs in its own container(s).

Your approach assumes that all of your functions run on the same infrastructure, which is not the case in the serverless world. Global modules (beyond what is packaged in the Lambda runtime) do not exist.

Be sure to read: https://docs.aws.amazon.com/lambda/latest/dg/best-practices.html and https://docs.aws.amazon.com/lambda/latest/dg/nodejs-create-deployment-pkg.html

And I tested this by moving the node_modules folder from the environment folder to the lambda project folder and it worked!