var deleted []string
		var svcs []*model.Service
		switch key.Kind {
		case kind.ServiceEntry:
			svcs, deleted = configgen.deltaFromServices(key, proxy, updates.Push, serviceClusters,
				servicePortClusters, subsetClusters)
		case kind.DestinationRule:
			svcs, deleted = configgen.deltaFromDestinationRules(key, proxy, subsetClusters)
		}
		services = append(services, svcs...)
		deletedClusters.InsertAll(deleted...)