}

func (f *Fake) registerHandler(h handler) {
	f.handlers = append(f.handlers, h)
}

func (f *Fake) Add(id cluster.ID, client kube.Client, stop chan struct{}) {
	for _, handler := range f.handlers {
		handler.clusterAdded(&Cluster{
			ID:            id,
			Client:        client,
			kubeConfigSha: [32]byte{},
			stop:          stop,
		})
	}
}

func (f *Fake) Delete(id cluster.ID) {
	for _, handler := range f.handlers {

	if !f {
		return nil
	}
	return &t
}

func (m *Component[T]) All() []T {
	m.mu.RLock()
	defer m.mu.RUnlock()
	return maps.Values(m.clusters)
}

func (m *Component[T]) clusterAdded(cluster *Cluster) ComponentConstraint {
	comp := m.constructor(cluster)
	m.mu.Lock()
	defer m.mu.Unlock()
	m.clusters[cluster.ID] = comp
	return comp
}

	kube.SetObjectFilter(c.Client, filter)

	syncers := make([]ComponentConstraint, 0, len(handlers))
	for _, h := range handlers {
		switch action {
		case Add:
			syncers = append(syncers, h.clusterAdded(c))
		case Update:
			syncers = append(syncers, h.clusterUpdated(c))
		}
	}
	if !c.Client.RunAndWait(c.stop) {
		log.Warnf("remote cluster %s failed to sync", c.ID)
		return
	}
	for _, h := range syncers {

		"Number of clusters managed by istiod",
	)

	localClusters  = clustersCount.With(clusterType.Value("local"))
	remoteClusters = clustersCount.With(clusterType.Value("remote"))
)

type handler interface {
	clusterAdded(cluster *Cluster) ComponentConstraint
	clusterUpdated(cluster *Cluster) ComponentConstraint
	clusterDeleted(clusterID cluster.ID)
	HasSynced() bool
}