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[BUG] Unable to generate pdf from html (aws lambda)

See original GitHub issue

Problem statement

I’m creating a lambda function to generate PDF from HTML, I haven’t installed Puppeteer. Is that possible to generate pdf without downloading chrome or chromium or any browser?

To reproduce kindly use the following request payload.

curl --location --request POST 'http://127.0.0.1:3000/dev/convert' \
--header 'Content-Type: application/json' \
--data-raw '{
    "header" : "<h1 style=\"margin-top:10px;font-size:40px\">Header is here<\/h1>",
    "html": "<!DOCTYPE html><html><body><h1>This is a heading<\/h1><p>This is a paragraph.<\/p><\/body><\/html>",
    "footer": "<p style=\"margin-top:10px;font-size:20px\">This is footer<\/p>"
}'

Environment

chrome-aws-lambda Version: ^3.1.1
puppeteer-core Version: ^4.0.0
OS: Linux
Node.js Version: 12.x
Serverless Version: ^1.73.1
aws-sdk Version: ^2.700.0
Lambda / GCF Runtime: nodejs12.x

Expected Behavior

Should generate pdf from html

Current Behavior

Not generating pdf

Steps to Reproduce

const chromium = require("chrome-aws-lambda");
const AWS = require("aws-sdk");


exports.htmlToPdfNode = async (event, context, callback) => {
  try {

    
    let requestBody = (typeof event.body == typeof 'string' ? JSON.parse(event.body) : event.body);
    
    const pdf = generatePdf(requestBody);
    
    uploadToS3(pdf);

    const response = {
      headers: {
        "Content-type": "application/pdf",
        "content-disposition": "attachment; filename=test.pdf"
      },
      statusCode: 200,
      body: pdf,
      isBase64Encoded: true,
    };

    

    callback(null, response);
    
  } catch (err) {
    callback(null, err);
  }
};


async function generatePdf(requestBody) {
  const headerHtml = requestBody.header;
  const bodyHtml = requestBody.html;
  const footerHtml = requestBody.footer;

  let browser = null;
    
  
  browser = await chromium.puppeteer.launch({
    // ignoreHTTPSErrors: true,
    // defaultViewport: chromium.defaultViewport,
    // args: chromium.args,
    // executablePath: await chromium.executablePath,
    args: ['--no-sandbox'],
    headless: true, //chromium.headless,
  });
  
  const page = await browser.newPage();
  await page.setContent(bodyHtml);
  
  // 4. Create pdf file with puppeteer
  const pdf = await page.pdf({
    format: "A4",
    printBackground: true,
    displayHeaderFooter: true,
    margin: { top: "100px", bottom: "200px" },
    headerTemplate: headerHtml,
    footerTemplate: footerHtml,
  });

  
  await browser.close();

  return pdf.toString('base64');
}


async function uploadToS3(pdf) {
  let s3 = new AWS.S3();
  let bucketName = process.env.Bucket;
  let keyName = "test/test.pdf";

  console.log('bucketName : '+ bucketName);

  let params = { Bucket: bucketName, Key: keyName, Body: pdf, ContentType: 'application/pdf' };
  s3.upload(params, function(err, data){
    console.log(err, data);
  });

}

Issue Analytics

State:
Created 3 years ago
Comments:5

Top GitHub Comments

1reaction

jessefalzonecommented, Jul 15, 2020

I ran into a similar issue. Try awaiting generatePdf, like so:

const pdf = await generatePdf(requestBody);
uploadToS3(pdf);

That worked for me.

0reactions

saurabhcgcommented, Jul 5, 2020

–header ‘Content-Type: application/pdf’ \

Already did.

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