To make my life easier I'm using a serverless package to handle deployment to AWS Lambda and chrome-aws-lambda to help out the deployment of puppeteer to AWS Lambda. It's a bit overkill for the current use case but at the same time, it is more future proof due to html+css base structure. I ended up choosing Puppeteer for this project.
#Pdfkit s3 generator
With NodeJS I had already done a small project with database connection so I knew that it would work.įor NodeJS I still needed a package to generator PDF, and I found following options: Originally I was planning to use Python and a Reportlab for this project but a connection to PostgreSQL database ended up being too complex to configure. Luckily both Google (Functions) and AWS (Lambda) have an event-driven service which is only running on request. Since these PDFs are not generated too often, it doesn't make sense to 24/7 running service.
#Pdfkit s3 pdf
Recently I have needed to solve a problem that involves generating a PDF file based on database content. exports.Generate a PDF in AWS Lambda with NodeJS and Puppeteer The PDF document will be served in the HTTP response from the HTTP API endpoint. The isBase64Encoded flag tells the API Gateway service to render binary content. The body field contains the PDF document encoded as a Base64 string. We'll take you through the latest features in PDFKit, including support for live text and forms, creating PDFs from images, building interactive overlays, and saving annotations. Here are the response values needed to return a PDF document from the Lambda runtime. Discover PDFKit a full-featured framework that helps your app view, edit, and save PDF documents. Returning PDFs from AWS Lambda FunctionsĪWS Lambda functions control API Gateway responses using a custom JSON response format. HTTP APIs simply need to provide a isBase64Encoded flag in the API response.
#Pdfkit s3 manual
REST APIs need manual configuration for media types and content handling to support binary responses. Setting up a HTTP endpoint to return binary content is simpler using HTTP than REST APIs. Just pass an image path, buffer, or data uri with base64 encoded data to the image method along with some. no request validation, X-Ray support or private endpoints. Adding images to PDFKit documents is an easy task. HTTP APIs (announced in 2019) are simpler, cheaper and faster than the older-style REST APIs, but with a restricted set of features, e.g. bind( buffers))īinary Content with HTTP APIs using AWS API GatewayĪWS’s API Gateway service supports two types of API endpoints - HTTP or REST APIs. Here is all the JavaScript you need to create this custom PDF.Ĭonst options = Ĭonst doc = new PDFDocument( options). The library had a really simple API for generating PDFs from dynamic content. No native libraries to compile or external dependencies needed. The return of the function is expected to provide the s3 URL of the file. Can you pl clarify if this feature support is feasible, sooner or in the near future. Right now, pdf is getting saved only locally. Im trying to create a pdf of some images (in datauri format) is nodejs and having the pdf stored in my S3. Hi, PDFKit is really useful and it will be greatly helpful if direct pdf upload to Amazon S3 is supported.
Simply upload your image to S3, for example, and wkhtmltopdf will have. Using PDFKit to store a PDF in S3 on the fly. This file should look something like so: service: generatePdf provider: name: aws region: us-west-1 runtime: nodejs10.x functions: generatePdf: handler: src/index.generatePdf events: - http: path: /pdf method: get. pdfkit-clj: Generates PDFs using wkhtmltopdf Documentation for pdfkit-clj v0.1.7. It was a good choice for a serverless application for the following reasons: We will need to use a configuration file called serverless.yml (for more details on the file options, see here ). There are numerous Node.js libraries for generating PDFs including PDFKit, pdf-lib and HummusJS. Here’s how I did it… Creating custom PDF documents in Node.js I hadn’t previously built anything that generated PDFs dynamically (let alone using serverless) but discovered how easy this was to do on AWS Lambda using PDFKit and HTTP APIs with API Gateway. API responses had to include the document’s binary contents directly, rather than forwarding to an external storage service.
#Pdfkit s3 how to
PDFs would be accessed via a HTML link from an internal web-app. This project is a serverless function that converts HTML text to PDF using Pdfkit (and essentially using wkhtmltopdf).The reason I created this project is because: 1) I could not find any existing example of a serverless with Pdfkit (or wkhtmltopdf) and 2) It's not an easy task to figure out how to put wkhtmltopdf onto AWS lamda environment. Custom PDFs needed to be created in real-time with dynamic content from an internal data source.
I recently had this exact use-case on a client project. But 'which' is not available on the container running Lambda.
How can you return dynamically generated PDF documents as HTTP responses from serverless functions? The issue is that unless it is preconfigured pdfkit is trying to call the 'which' command to figure out where the wkhtmltopdf binary is.
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