ListValue: &structpb.ListValue{
				Values: []*structpb.Value{},
			},
		},
	}
	svcMetaList := im.Fields["services"].GetListValue()
	svcMetaList.Values = append(svcMetaList.Values, buildServiceMetadata(svc))

	// no TLS, we are just going to internal address
	localCluster.cluster.TransportSocketMatches = nil
	localCluster.cluster.TransportSocket = util.TunnelHostInternalUpstreamTransportSocket

				continue
			}
			svcMetaList.Values = append(svcMetaList.Values, buildServiceMetadata(svc.Service))
			have.Insert(svc.Service.Hostname)
		}
	} else if direction == model.TrafficDirectionOutbound {
		// For outbound cluster, add telemetry metadata based on the service that the cluster is built for.
		svcMetaList.Values = append(svcMetaList.Values, buildServiceMetadata(service))
	}

	}
}

// Build a struct which contains service metadata and will be added into cluster label.
func buildServiceMetadata(svc *model.Service) *structpb.Value {
	return &structpb.Value{
		Kind: &structpb.Value_StructValue{
			StructValue: &structpb.Struct{
				Fields: map[string]*structpb.Value{
					// service fqdn