slack-serverless 2023.1004a0

Utility library for serverless Slack apps

This is a (currently very simple) library that eases development of serverless Slack app and bots.

Currently, it targets Google Cloud Platform (but is easily generalised), and provides a decorator and some utility functions that make Slack signature verification automatic and help with building responses in a very lightweight fashion.

I will grow it with things I end up needing in my work, but if you have different needs and want to extend the library to support them, then PRs would be gratefully received!

MVP Example

This will accept any slash command you've configured for your bot, and just greet the user who calls it, tagging them in the reply.

from slack_serverless import slack_slash_command_gcp
from slack_messaging import slack_in_channel_text_response, slack_tags

@slack_slash_command_gcp(slack_signing_key=YOUR_SIGNING_KEY)
def command_handler(payload):
    return slack_in_channel_text_response(f"Hi there <@{slack_tags([payload['user_id']])}>")

Other Cloud Providers

Things will be a bit more manual here (but I'll happily add comfort wrappers if there's enough call and a PR that contributes them 😉).

The easiest thing to do is use the slack_slash_command decorator, which is similar to the gcp one above but needs you pass in a couple of Callables the code will use to get access to the data in a provider-specific way.

Take a look at the code in slack_serverless.py for examples to get you started.

Developing

Don't forget to set up pre-commit if you're developing things, especially if you plan to push a PR.

Legal Mumbo-Jumbo

Copyright (c)2023 Ross Bamford (and contributors)

License: MIT (see LICENSE.md for details).