s3 flow

automated_upload.sh

#!/bin/bash

FILE="test.csv"

if test -f "/path/to/$FILE"; then
    aws s3 cp $FILE s3://my-aws-bucket-arn/
fi

index.js

var AWS = require('aws-sdk');
var s3 = new AWS.S3();

exports.handler = async(event) => {
	var bucket = event.Records[0].s3.bucket.name;
	var output = {};
	const key = decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, ' '));
	const params = {
		Bucket: bucket,
		Key: key
	};

	s3.getObject(params, function(err, data) {
		if (err){
			console.log(err, err.stack); // an error occurred
			return err.stack;
		} else {
			var copyParams = {
				Bucket: "destinationbucket", 
				CopySource: "/sourcebucket/HappyFacejpg", 
				Key: "HappyFaceCopyjpg"
			};
			s3.copyObject(copyParams, function(err, data) {
				if (err){
					console.log(err, err.stack);// an error occurred
					return err.stack;
				} else {
					console.log(data);// successful response
				}    
				const response = {
					statusCode: 200,
					body: data,
				};
				return response;
			}
	});
};