// cluster and generates discoverability policies for the endpoints.
type serviceExportCache interface {
	// EndpointDiscoverabilityPolicy returns the policy for Service endpoints residing within the current cluster.
	EndpointDiscoverabilityPolicy(svc *model.Service) model.EndpointDiscoverabilityPolicy

	// ExportedServices returns the list of services that are exported in this cluster. Used for debugging.

	return out
}

func (b *EndpointBuilder) buildIstioEndpoint(
	endpointAddress string,
	endpointPort int32,
	svcPortName string,
	discoverabilityPolicy model.EndpointDiscoverabilityPolicy,
	healthStatus model.HealthStatus,
) *model.IstioEndpoint {
	if b == nil {
		return nil
	}

	// in case pod is not found when init EndpointBuilder.

}

// AlwaysDiscoverable is an EndpointDiscoverabilityPolicy that allows an endpoint to be discoverable throughout the mesh.
var AlwaysDiscoverable EndpointDiscoverabilityPolicy = &endpointDiscoverabilityPolicyImpl{
	name: "AlwaysDiscoverable",
	f: func(*IstioEndpoint, *Proxy) bool {
		return true
	},
}

// DiscoverableFromSameCluster is an EndpointDiscoverabilityPolicy that only allows an endpoint to be discoverable

		// TODO(https://github.com/istio/istio/issues/34995) support FQDN endpointslice
		return
	}
	svc := esc.c.GetService(hostName)
	discoverabilityPolicy := esc.c.exports.EndpointDiscoverabilityPolicy(svc)

	for _, e := range slice.Endpoints {
		// Draining tracking is only enabled if persistent sessions is enabled.
		// If we start using them for other features, this can be adjusted.