Consider supporting (Slack) notifications via AWS ChatBot

[reisingerf]

AWS Chatbot natively supports integration with Slack without the need for a custom Lambda.

For an idea of how that may work, see here.

[reisingerf]

Turns out this may not be as straight forward as I was hoping.

While this should work in principle, it may run into practical issues.

The suggested code assumes that it can create a new SlackChannelConfiguration. However, AWS currently only supports a single SlackChannelConfiguration per channel. So if that SlackChannelConfiguration has already been setup (somewhere, somehow), this will fail with a "Slack channel ... has already been configured" error.

While a SlackChannelConfiguration can be imported into a stack, it would be read-only, i.e. no new topics could be added. See here for context.

I think an alternative could be to use an existing SNS Topic rather than creating a new one. A topic that's provided by the same stack/process that's in control of the SlackChannelConfiguration.

However, that means the monitored queue would need to support an existing SNS topic (ITopic).