At first I recommend to look at knox module for NodeJS. It is from quite reliable source. https://github.com/LearnBoost/knox
I write a code below for Express module, but if you do not use it or use another framework, you should still understand basics. Take a look at CAPS_CAPTIONS in the code, you want to change them according to your needs / configuration. Please also read comments to understand pieces of code.
app.post('/YOUR_REQUEST_PATH', function(req, res, next){
var fs = require("fs")
var knox = require("knox")
var s3 = knox.createClient({
key: 'YOUR PUBLIC KEY HERE' // take it from AWS S3 configuration
, secret: 'YOUR SECRET KEY HERE' // take it from AWS S3 configuration
, bucket: 'YOUR BUCKET' // create a bucket on AWS S3 and put the name here. Configure it to your needs beforehand. Allow to upload (in AWS management console) and possibly view/download. This can be made via bucket policies.
})
fs.readFile(req.files.NAME_OF_FILE_FIELD.path, function(err, buf){ // read file submitted from the form on the fly
var s3req = s3.put("/ABSOLUTE/FOLDER/ON/BUCKET/FILE_NAME.EXTENSION", { // configure putting a file. Write an algorithm to name your file
'Content-Length': buf.length
, 'Content-Type': 'FILE_MIME_TYPE'
})
s3req.on('response', function(s3res){ // write code for response
if (200 == s3res.statusCode) {
// play with database here, use s3req and s3res variables here
} else {
// handle errors here
}
})
s3req.end(buf) // execute uploading
})
})
