// Start starts monitoring for competition entity for resource
func (k *GateKeeper) Start(resource interface{}, waitTime time.Duration) {
	k.mux.Lock()
	defer k.mux.Unlock()
	if k.cancel != nil {
		k.cancel()
	}
	k.ctx, k.cancel = context.WithCancel(context.Background())
	mux := &GreedyMutex{
		TimeToWait: waitTime,
		queue:      k.queue,
	}
	wg := new(sync.WaitGroup)
	wg.Add(1)
	go func() {
		wg.Done()
		mux.Compete(k.ctx, resource)
	}()
	wg.Wait()
	fmt.Println("successfully start monitoring for resource")
}

// Stop stops monitoring resource
func (k *GateKeeper) Stop() {
	if k.cancel != nil {
		k.cancel()
	}
}

// Register register for accessing resource
func (k *GateKeeper) Register(entity PrioritizedEntity) {
	k.queue <- entity
}