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Use case description

Currently the iot event only supports an Action for a topic rule. I want to be able to define an error action (https://docs.aws.amazon.com/iot/latest/developerguide/rule-error-handling.html).

Proposed solution (optional)

Provided the YML:

  myFunction:
    handler: ...
    events:
      - iot:
          sql: "SELECT * FROM 'test_unit'"
          errorAction: <ref a function arn here> 

The appropriate CF templating will be performed (see reference in description)