stable release of my modified-for Google Appengine fork of https://github.com/bluele/slack. i have this working in production on several Appengine-hosted /slash commands & bots.
the TL;DR on my modifications:
- HTTP requests are restricted/controlled in App Engine, you must use a helper function. i made the necessary modifications. see https://cloud.google.com/appengine/docs/go/urlfetch/ for more details.
- Buele’s lib did not support Slack usergroups. i added it.