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GitHub Webhooks "Platform"
This repository contains the code for an experimental platform I've rolled out to automate a bunch of things that I do as part of maintaining some open source projects, that I want to stop doing.
Goals
- Simple - this is hosted on a hobby dyno on Heroku - nothing fancy
- Extensible - web hooks come in, stuff happens, results appear on GitHub if needed
- Boring - no bleeding edge tech necessary, just a simple webapp with jobs infrastructure that should support being able to scale this later if needed
Features
I currently have one job created that runs when a pull request event is raised on Up-For-Grabs to review any project file changes to ensure they are correct.
This is automating my experience reviewing PRs for the project, and it consists of a few steps that are spread across a number of places:
- Can I parse the project file? If not, what needs to be addressed?
- Is the project hosted on GitHub? If so, does it still exist there?
- Did the user specify the right label? Is it in use on the project?
- Did the user specify a tag that should be normalized? What should it be normalized to?
So far I've been able to script and codify these checks to run whenever a webhook matching the required criteria is received, and you can see it in action here:
I'll start fleshing things out once I've got a better baseline and more test coverage, now that I've got the key pieces in place and this is working against production data.
Coming Soon™
- a dashboard interface to support tracing webhook activity (currently using the Heroku logs portal which is very noisy)
- investigate whether I can detect "PR is mergeable" from webhooks, so that I can auto-merge some PRs without needing human intervention
- investigate using pull request reviews API
- investigate using suggested changes to recommend fixes
- investigate applying this to other projects I maintain, and how that affects the overall architecture