Saga state machine definition (Chris Patterson)

gistfile1.cs

public class DrinkPreprationStateMachine :
	StateMachine < DrinkPreprationStateMachine >,
	ISaga,
	InitiatedBy < NewOrderMessage >,
	Orchestrates < PaymentCompleteMessage >,
	Orchestrates < DrinkPreparedMessage >
{
    static DrinkPreprationStateMachine()
    {
        Define(() => {
            Initially(
                When(NewOrder)
                    .Then(saga =>
                    {
                        // start preparing the drink
                    })
                .TransitionTo(PreparingDrink));
			During(PreparingDrink,
				When(DrinkPrepared)
                                       .TransitionTo(WaitingForPayment),
				When(PaymentComplete)
 				       	.TransitionTo(WaitingForDrink));
			During(WaitingForPayment,
			    When(PaymentComplete)
			       	.Then(saga =>
		       		{
		       			// publish drink ready message
		       		})
			       	.Complete());
			During(WaitingForDrink,
				When(DrinkPrepared)
			       	    .Then(saga =>
			       	    {
			       		// publish drink ready message
			       	    })
			       	.Complete());
		});
}