Miguel Villafuerte mikeshot

Upload a file with $.ajax to AWS S3 with a pre-signed url

When you read about how to create and consume a pre-signed url on this guide, everything is really easy. You get your Postman and it works like a charm in the first run.

Then you open your browser, try your usual $.ajax() and send your PUT operation, and you hit the cold iced wall of AWS error message, a simple <Code>SignatureDoesNotMatch</Code> that will steal hours from your productivity.

So here I come to save you and give you a free working example of how to upload a file directly to AWS S3 from your browser. You are wellcome :).

	// Based on Glacier's example: http://docs.aws.amazon.com/AWSJavaScriptSDK/guide/examples.html#Amazon_Glacier__Multi-part_Upload
	var fs = require('fs');
	var AWS = require('aws-sdk');
	AWS.config.loadFromPath('./aws-config.json');
	var s3 = new AWS.S3();

	// File
	var fileName = '5.pdf';
	var filePath = './' + fileName;
	var fileKey = fileName;

	# PostgreSQL can be on a remote server but you'll need root privileges in Linux and superuser in PostgreSQL.

	# First install build tools

	sudo su
	aptitude install build-essential
	aptitude install postgresql-server-dev-9.4

	# Clone and build the PL/pgSQL server-side debugger