PRs: Look for Labels

An experimental GitHub app written in pure ReasonML (or... OCaml!) It looks up for labels with PR: prefix (for autogenerating changelogs for yoshi) and adds a status for the project.

Under the hood

This project uses Reason with the native OCaml toolchain to product a statically built binary. In Dockerfile you can see that we're using plain alpine linux image to run the server, resulting in a small image footprint (~16mb).

Deployment on Heroku

• Create a github app, generate the private token and save it as github.private-token.pem

• Deploy with Heroku containers:

  # from the repo root
  heroku login
  heroku create
  heroku config:set GITHUB_APP_ID <YOUR_GITHUB_APP_ID>
  heroku container:push web
  heroku container:release web
  heroku open

• Optional: you can set a webhook secret by setting the GITHUB_WEBHOOK_SECRET environment variable:

  heroku config:set GITHUB_WEBHOOK_SECRET this-is-my-wonderful-secret-key

Usage

• Go to https://github.com/apps/pr-labels-checker and install it on your repo