S3 File Upload to AWS S3

s3-file-upload.js

const AWS = require('aws-sdk');
const Busboy = require('busboy');

const BUCKET_NAME = '';
const IAM_USER_KEY = '';
const IAM_USER_SECRET = '';

function uploadToS3(file) {
  let s3bucket = new AWS.S3({
    accessKeyId: IAM_USER_KEY,
    secretAccessKey: IAM_USER_SECRET,
    Bucket: BUCKET_NAME
  });
  s3bucket.createBucket(function () {
      var params = {
        Bucket: BUCKET_NAME,
        Key: file.name,
        Body: file.data
      };
      s3bucket.upload(params, function (err, data) {
        if (err) {
          console.log('error in callback');
          console.log(err);
        }
        console.log('success');
        console.log(data);
      });
  });
}

module.exports = (app) => {
  // The following is an example of making file upload with additional body
  // parameters.
  // To make a call with PostMan
  // Don't put any headers (content-type)
  // Under body:
  // check form-data
  // Put the body with "element1": "test", "element2": image file

  app.post('/api/upload', function (req, res, next) {
    // This grabs the additional parameters so in this case passing in
    // "element1" with a value.
    const element1 = req.body.element1;

    var busboy = new Busboy({ headers: req.headers });

    // The file upload has completed
    busboy.on('finish', function() {
      console.log('Upload finished');
      
      // Your files are stored in req.files. In this case,
      // you only have one and it's req.files.element2:
      // This returns:
      // {
      //    element2: {
      //      data: ...contents of the file...,
      //      name: 'Example.jpg',
      //      encoding: '7bit',
      //      mimetype: 'image/png',
      //      truncated: false,
      //      size: 959480
      //    }
      // }
      
      // Grabs your file object from the request.
      const file = req.files.element2;
      console.log(file);
      
      // Begins the upload to the AWS S3
      uploadToS3(file);
    });

    req.pipe(busboy);
  });
}

I got the following error @keithweaver
Error: params.Body is required
Any idea what this might be? It says that file.data is undefined

And here's what I got when I log the file
{ fieldName: 'file', originalFilename: 'aaaaaaaaaa.png', path: '/var/folders/tb/jt5f67f91x7d60vzm14fnqv40000gn/T/XARw2C-5embUMiEefpiqv8oq.png', headers: { 'content-disposition': 'form-data; name="file"; filename="aaaaaaaaaa.png"', 'content-type': 'image/png' }, size: 102806, name: 'aaaaaaaaaa.png', type: 'image/png' }

Any updates?

@menthos I Resolved that issues :

npm install express-fileupload
const fileUpload = require('express-fileupload');
app.use(fileUpload());
........................................................
exports.uploadToS3 = function (file) {
var file = file.files; // This line need to write...............................................
let s3bucket = new AWS.S3({
accessKeyId: '',
secretAccessKey: '',
Bucket: '',
});
s3bucket.createBucket(function () {
var params = {
Bucket: '',
Key: file.name,
Body: file.data,
};
s3bucket.upload(params, function (err, data) {
if (err) {
console.log('error in callback');
console.log(err);
}
console.log('success');
console.log(data);
});
});
}

I got the following error @keithweaver
Error: params.Body is required
Any idea what this might be? It says that file.data is undefined
And here's what I got when I log the file
{ fieldName: 'file', originalFilename: 'aaaaaaaaaa.png', path: '/var/folders/tb/jt5f67f91x7d60vzm14fnqv40000gn/T/XARw2C-5embUMiEefpiqv8oq.png', headers: { 'content-disposition': 'form-data; name="file"; filename="aaaaaaaaaa.png"', 'content-type': 'image/png' }, size: 102806, name: 'aaaaaaaaaa.png', type: 'image/png' }

Any updates?

i am struggling with same error Error: params.Body is required` did you the answer ?

Encountered the same issue from Multer.
My simple workaround is:

import * as fs from "fs";

  async uploadFile(file: Express.Multer.File, bucket: string, key: string): Promise<void> {

    const filePath = join(__dirname, "..", file.path);
    
    const params = {
      Bucket: bucket,
      Key: key,
      Body: fs.createReadStream(filePath),
      ContentType: file.mimetype
    };
  
    await this.s3.upload(params).promise();
  }