trigger

type Executor interface {
	SubmitTransaction([]*core.ReceptTransaction)
	Start()
	Stop()
}

type Subscriber interface {
	SubscribeUpdateAnchorEvent(ch chan<- core.AnchorEvent) event.Subscription
	SubscribeNewTakerEvent(ch chan<- core.NewTakerEvent) event.Subscription
	SubscribeNewFinishEvent(ch chan<- core.NewFinishEvent) event.Subscription
	SubscribeConfirmedMakerEvent(ch chan<- core.ConfirmedMakerEvent) event.Subscription
	SubscribeConfirmedTakerEvent(ch chan<- core.ConfirmedTakerEvent) event.Subscription
	SubscribeConfirmedFinishEvent(ch chan<- core.ConfirmedFinishEvent) event.Subscription
	Stop()
}