Upload Pdf Generated To Aws S3 Using Nodejs Aws Sdk

I am using pdfkit to generate a pdf with some custom content and then sending it to an AWS S3 bucket. While if I generate the file as a whole and upload it works perfectly, however

Solution 1:

I'll try to be precise here. I will not be covering usage of pdfKit's nodejs sdk in much detail.

IF you want your generated pdf as a file.

varPDFDocument = require('pdfkit');

// Create a document
doc = newPDFDocument();

// Pipe it's output somewhere, like to a file or HTTP response
doc.pipe(fs.createWriteStream('output.pdf'));
doc.text('Whatever content goes here');
doc.end();
var params = {
  key : fileName,
  body : './output.pdf',
  bucket : 'bucketName',
  contentType : 'application/pdf'
}

s3.putObject(params, function(err, response) {

});

However if you want to stream it ( to say S3 bucket in the context of question), then it is worth remembering that every pdfkit instance is a readable stream.

And S3 expects a file, a buffer or a readable stream. So,

var doc = new PDFDocument();

// Pipe it's output somewhere, like to a file or HTTP response
doc.text("Text for your PDF");
doc.end();

var params = {
  key : fileName,
  body : doc,
  bucket : 'bucketName',
  contentType : 'application/pdf'
}

//notice use of the upload function, not the putObject function
s3.upload(params, function(err, response) {

});

Solution 2:

If you are using html-pdf package and aws-sdk than it's very easy...

var pdf = require('html-pdf');
import aws from'aws-sdk';
const s3 = new aws.S3();

pdf.create(html).toStream(function(err, stream){
  stream.pipe(fs.createWriteStream('foo.pdf'));
  const params = {
                Key: 'foo.pdf',
                Body: stream,
                Bucket: 'Bucket Name',
                ContentType: 'application/pdf',
            };
  s3.upload(params, (err, res) => {
                if (err) {
                    console.log(err, 'err');
                }
                console.log(res, 'res');
            });
});

Solution 3:

Tried this and worked. I created a readFileSync and then uploaded that to S3. I also used a "writeStream.on('finish' " so that pdf file is completely created before it is uploaded, otherwise it uploads partial file.

constPDFDocument = require('pdfkit');
const fs = require('fs');
constAWS = require('aws-sdk');
const path = require('path')

asyncfunctioncreatePDF() {


const doc = newPDFDocument({size: 'A4'});
let writeStream = fs.createWriteStream('./output.pdf')
doc.pipe(writeStream);


// Finalize PDF file
doc.end();

writeStream.on('finish', function () {
    var appDir = path.dirname(require.main.filename);
    const fileContent = fs.readFileSync(appDir + '/output.pdf');
    var params = {
        Key : 'filName',
        Body : fileContent,
        Bucket : process.env.AWS_BUCKET,
        ContentType : 'application/pdf',
        ACL: "public-read"
      }
      
    const s3 = newAWS.S3({
        accessKeyId: process.env.AWS_ACCESS_KEY,
        secretAccessKey: process.env.AWS_SECRET_KEY
    });
      //notice use of the upload function, not the putObject function
    s3.upload(params, function(err, response) {
        
    });
});

}