Image upload, resize and rename with AWS S3 with node and Multer S3

aws.js

const multer = require('multer');
const multerS3 = require('multer-s3');
const uuid = require('uuid');
const AWS = require('aws-sdk');
const sharp = require('sharp');

AWS.config.update({
  accessKeyId: process.env.AWS_ACCESS,
  secretAccessKey: process.env.AWS_SECRET_KEY
});

const s3 = new AWS.S3();
const maxSize = 5 * 1000 * 1000;
/* TODO Resize */
const multerOptions = {
  storage: multerS3({
    s3: s3,
    bucket: process.env.AWS_BUCKET,
    acl: 'public-read',
    limits: {
      fileSize: maxSize,
      files: 5
    },
    contentType: multerS3.AUTO_CONTENT_TYPE,
    key: function(req, file, cb) {
      const extension = file.mimetype.split('/')[1]; // gets the extension
      const area = req.body.area;
      const destinationFolder = req.body.destinationFolder;
      fileName = `${destinationFolder}/${area}${uuid.v4()}.${extension}`;
      cb(null, fileName);
    },
    shouldTransform: function(req, file, cb) {
      cb(null, /^image/i.test(file.mimetype));
    },
    transforms: [
      {
        id: 'original',
        transform: function(req, file, cb) {
          //Perform desired transformations
          cb(
            null,
            sharp()
              .resize(600, 600)
              .max()
          );
        }
      }
    ],
    fileFilter(req, file, next) {
      const isPhoto = file.mimetype.startsWith('image/');
      if (isPhoto) {
        next(null, true); // null for error means it worked and it is fine to continue to next()
      } else {
        next({ message: 'Fotos: Tipo de arquivo não suportado!' }, false); // with error
      }
    }
  })
};

exports.upload = multer(multerOptions).array('photos', 5);

Hi, this was very helpful thank you, but i wanna ask, where did you find the properties "fileFilter", "transforms", "shouldTransform", and "limits"? I couldn't find them anywhere!

Hey man did this transformation work for you ?

hi ossycodes! actually no it didin't, took a lot of time with no results so ended up using jimp with busboy instead of sharp & multer

Is there any option to use metadata(), with and height here?

Is there any option to use metadata(), with and height here?

Hey, not sure, this is quite old, to be honest, you might want to try a different approach as Mahmoudafer suggested.

Shouldtransform still not working for me