Adding a new js file to my lambda function using Serverless - node.js

Question

I'm trying to create an API on AWS Lambda, and using Serverless framework for deployment.
I'm a complete noob at it, so I'm not sure I'm doing the right thing. So here's the old favorite, hello world (index.js):
const serverless = require('serverless-http');
const express = require('express');
const app = express();
const Promise = require('promise');
app.get('/', function (req, res) {
res.send('Hello World!')
})
That works fine as is. But when I add the following:
const serverless = require('serverless-http');
const express = require('express')
const app = express()
const Register = require('./controller/registryController');
app.get('/', function (req, res) {
res.send('Hello World!')
})
app.get('/createUserName', function (req, res) {
var prom = Register.createUser();
prom.then((message) => {
res.status(201).json(message);
})
.catch((message) => {
res.status(400).json(message);
});
})
module.exports.handler = serverless(app);
I get:
"Cannot find module './controller/registryController'"
Which is strange, cause the file is right there, when I look in lambda. Here's its contents:
const dbConnMysql = require('./dbMngrMysql');
var methods = {
createUser: function() {
return new Promise((resolve, reject) => {
let connection = dbConnMysql.createConnection();
dbConnMysql.startConnection(connection)
.then((fulfilled) => {
let table = 'userNamePool';
return dbConnMysql.selectFrom(connection, table, null);
})
.then((fulfilled) => {
return dbConnMysql.closeConnection(connection).then(function() {
let result = fulfilled;
let response = {
"statusCode": 200,
"headers": {"my_header": "my_value"},
"body": JSON.stringify(result),
"isBase64Encoded": false
};
resolve(response);
});
})
.catch((error) => {
let response = {
"statusCode": 404,
"headers": {"my_header": "my_value"},
"body": JSON.stringify(error),
"isBase64Encoded": false
};
resolve(response);
});
});
}
};
module.exports = methods;
Here's the project structure / directory:
And here's my serverless.yml for good measure:
service: sample-api
provider:
name: aws
runtime: nodejs8.10
stage: dev
region: yapyap
deploymentBucket: yadayada
role: blahblahblah
functions:
app:
handler: index.handler
events:
- http: ANY /
- http: 'ANY {proxy+}'
createUserName:
handler: index.handler
events:
- http: 'GET /createUserName'
What am I doing wrong? Anything I can do to fix this?

Answer 1

There's a typo:
controller instead of controllers. 😊

Answer 2

Sorry, I can't comment because of the reputation restriction.
The problem may be because you haven't created controller folder.
To create it properly
create a folder. Name it controller. Create your registryController.js and put your code in it.
now you will be able to call it as
const Register = require('./controller/registryController');
Also on a side note, if you want to use a serverless architecture, separate your server side and client side code completely. Put your HTML files and client-side scripts in an S3 bucket. put your server-side code in lambda function and connect it with API Gateway. then use a JavaScript function to call the API. Keep server-side calls as less as possible.