import (
	v3 "istio.io/istio/pilot/pkg/xds/v3"
	"istio.io/istio/pkg/util/sets"
)

// EventType represents the type of object we are tracking, mapping to envoy TypeUrl.
type EventType = string

var AllTrackingEventTypes = sets.New[EventType](
	v3.ClusterType,
	v3.ListenerType,
	v3.RouteType,
	v3.EndpointType,
)

// EventHandler allows for generic monitoring of xDS ACKS and disconnects, for the purpose of tracking

		return
	}

	// if typeUrl is not empty, report all events that are not being watched
	unWatched := sets.NewWithLength[EventType](len(AllTrackingEventTypes))
	watchedTypes := con.proxy.GetWatchedResourceTypes()
	for tyeUrl := range AllTrackingEventTypes {
		if _, exists := watchedTypes[tyeUrl]; !exists {
			unWatched.Insert(tyeUrl)
		}
	}
	for tyeUrl := range unWatched {

	}
	// Skip unsupported event types. This ensures we do not leak memory for types
	// which may not be handled properly. For example, a type not in AllEventTypes
	// will not be properly unregistered.
	if _, f := xds.AllTrackingEventTypes[distributionType]; !f {
		return
	}
	d := distributionEvent{nonce: nonce, distributionType: distributionType, conID: conID}
	select {
	case r.distributionEventQueue <- d:
		return
	default: