Slack Source

This is a work in progress Slack source using Knative Eventing Sources to bridge Slack events via a Slack App/Bot to a Kubernetes Cluster running the Knative Eventing stack.

You will need Knative and ko setup and installed with a running k8s cluster.

Quick Start

1. Get Slack App API keys in the Slack Admin Console.
   1. Replace the base64 encoded keys in config/once/secret.yaml
   2. Then, kubectl apply -f config/once/secret.yaml
2. Install the Slack Source, ko apply -f config/

Optionally install one of the demos inside of ./config/demo or write your own.

Overview

Slack Source creates a Container Source running a RTM connection to Slack using the provided API keys. Applying config/slack.yaml also creates 2 channels and a subscription for the Slack Source to receive messages from within the cluster.

Incoming events

Slack -> Source -> channel/slack-in

The Slack Source only forwards cloudevents of type slack.Message to slack-in.

Outgoing Events

channel/slack-out -> Source -> Slack

The Slack Source is only looking for CloudEvents with Response objects.

type Response struct {
	Channel string
	Text    string
}

Demos

The receiver demo just prints to the pod log.

The echo demo looks for slack.Message events and if the message.Text starts with "echo " then sends a new cloudevent to slack-out with the same text with "echo " trimmed off to the same channel as it was sent.