WorkflowAction

An atomic operation that updates the state of a Workflow, and also optionally emits an output.

A WorkflowAction's apply method is executed in the context of an Updater, which provides access to the current props and state, along with a setOutput function. The state can be updated with a new StateT instance that will become the current one after the apply function finishes.

It is possible for one WorkflowAction to delegate to another, although the API is a bit opaque:

val actionA = action {
}

val actionB = action {
  val (newState, outputApplied) = actionA.applyTo(props, state)
  state = newState
  outputApplied.output?.value?.let { setOutput(it) }
}