Cancel a Step Function in the Wait step

Question

I need a step function that waits 2 days before processing a request. Within that two day period it's possible for a user to cancel the request with a follow up request. Is this achievable with step functions.

Answer 1

It's certainly possible to stop a currently executing step function.

Using the AWS CLI as an example, you can call aws step functions stop-execution with an exeuction-arn:

$ aws step-function stop-execution --execution-arn <value>
    [--error <value>]
    [--cause <value>]
    [--cli-input-json <value>]
    [--generate-cli-skeleton <value>]

https://docs.aws.amazon.com/cli/latest/reference/stepfunctions/stop-execution.html

The stop-execution function is also available in the various AWS SDKs and client libraries.