Cloud Function using Ghostscript
This is an example of a Google Cloud Function using Ghostscript, exploring how to answer a question from StackOverflow
I don't know if this approach is a good idea, rather it was an experiment in learning more about the experience of using Cloud Storage events to trigger Cloud Functions with the Firebase development experience.
This solution is based on the idea that node modules can install native code that is in the same directory as the Cloud Function's source code, using a similar solution created by
- Node library that wraps Ghostscript command line: https://github.com/sina-masnadi/node-gs
- Compiled Ghostscript which is used via git submodule: https://github.com/sina-masnadi/lambda-ghostscript
To use this in your own project, the following steps should work. I haven't tested them, so if anyone is reading this, and it works, please do a PR and remove this note (or ask me questions on twitter @ultrasaurus if these don't work and I'll see if I can figure it out again!)
Pre-requisites:
nvm use 6.11 # or whatever you use to install Node 6.11.x
npm install -g firebase-tools
Steps:
- Create a new project in the Firebsae Console
- clone this repo
- In your terminal:
cd ghostscript-cloud-function
git submodule update --init
firebase deploy --only functions
- In the Firebase Console, on the Storage tab you can upload a PDF, and a PNG should appear in a few seconds.
- You can look at the verbose logs in the Functions tab to see what is going on.