How to add new ReactiveActions to StateMachineConfiguration?

[davefarrelly]

Hi, I am looking to upgrade to v4.0.0 and switch to the new ReactiveActions , however I am not entirely sure how to migrate my project.

Currently I have a StateMachineConfiguration and I add the Actions to the states using the StateMachineStateConfigurer

@Override
public void configure(StateMachineStateConfigurer<CommitState, CommitEvent> states) throws Exception {
	states.withStates()
			.initial(CommitState.BEFORE_COMMIT)
			.state(CommitState.COMMIT_BLOCKS, commitStateService.commitBlocks())
			.end(CommitState.COMPLETE);
}

Where the Action is defined as:

public Action<CommitState, CommitEvent> commitBlocks() {
	return context -> {
	  UUID uploadSessionId = getStateMachineId(context.getStateMachine());

	  digestStrategyContext.commitBlockLists(uploadSessionId)
		  .doOnSuccess(result -> sendEvent(context, CommitEvent.COMMIT_SUCCESS))
		  .subscribe();
	};
}

It technically works, but of course isn't ideal as I am subscribing here inside the action and breaking my reactive chain. But if I create a new ReactiveAction that returns a Mono, how do I actually add it to the state like .state(CommitState.COMMIT_BLOCKS, commitStateService.commitBlocks()) ?