{{- end }}
      {{- if .zone }}
      {{- if .region }}
      ,
      {{- end }}
      "zone": "{{ .zone }}"
      {{- end }}
      {{- if .sub_zone }}
      {{- if or .region .zone }}
      ,
      {{- end }}
      "sub_zone": "{{ .sub_zone }}"
      {{- end }}
    },
    "metadata": {{ .meta_json_str }}
  },
  "layered_runtime": {
      "layers": [
          {

    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "test.test",
    "locality": {
      "region": "regionA"
      ,
      "zone": "zoneB"
      ,
      "sub_zone": "sub_zoneC"
    },

    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "test.test",
    "locality": {
      "region": "regionA"
      ,
      "zone": "zoneB"
      ,
      "sub_zone": "sub_zoneC"
    },

						Region:  "region1",
						Zone:    "zone1",
						SubZone: "subzone1",
					},
				},
				{
					Locality: &core.Locality{
						Region:  "region1",
						Zone:    "zone1",
						SubZone: "subzone1",
					},
				},
				{
					Locality: &core.Locality{
						Region:  "region1",
						Zone:    "zone1",
						SubZone: "subzone2",
					},
				},
				{

				Zone:   "zone",
			},
		},
		{
			name:     "locality with region zone and subzone",
			locality: "region/zone/subzone",
			want: &core.Locality{
				Region:  "region",
				Zone:    "zone",
				SubZone: "subzone",
			},
		},
		{
			name:     "locality with region zone subzone and rack",
			locality: "region/zone/subzone/rack",
			want: &core.Locality{
				Region:  "region",
				Zone:    "zone",

				Weight:         1,
				Network:        "nw0",
				Locality:       "rgn1/zone1/subzone1",
				ServiceAccount: "sa-a",
			},
		},
	}
	proxy := fakeProxy("10.0.0.1", group, "nw1", "sa")
	proxy.Labels[model.LocalityLabel] = "rgn2/zone2/subzone2"
	proxy.XdsNode = fakeNode("rgn2", "zone2", "subzone2")
	proxy.Locality = proxy.XdsNode.Locality

	wantLabels := map[string]string{

						"topology.kubernetes.io/zone":   "zone1",
						"topology.istio.io/subzone":     "subzone1",
						"topology.istio.io/network":     "network1",
						"topology.istio.io/cluster":     clusterID,
					},
					Address: "1.1.1.1",
					Network: "network1",
					Locality: model.Locality{
						Label:     "region1/zone1/subzone1",
						ClusterID: cluster.ID(clusterID),
					},

	subzone := node.GetLabels()[label.TopologySubzone.Name]

	if region == "" && zone == "" && subzone == "" {
		return nil
	}

	return &workloadapi.Locality{
		Region:  region,
		Zone:    zone,
		Subzone: subzone,
	}
}

func getWorkloadEntryLocality(p *networkingv1alpha3.WorkloadEntry) *workloadapi.Locality {
	region, zone, subzone := labelutil.SplitLocalityLabel(p.GetLocality())

					}
					if regionZoneSubZoneMap[region][zone][subZone] {
						return fmt.Errorf("locality %s overlap with previous specified ones", locality)
					}
					regionZoneSubZoneMap[region][zone][subZone] = true
				} else {
					regionZoneSubZoneMap[region][zone] = map[string]bool{subZone: true}
				}
			} else {
				regionZoneSubZoneMap[region] = map[string]map[string]bool{zone: {subZone: true}}
			}
		}
	}

	return nil

func ConvertLocality(locality string) *core.Locality {
	if locality == "" {
		return &core.Locality{}
	}

	region, zone, subzone := label.SplitLocalityLabel(locality)
	return &core.Locality{
		Region:  region,
		Zone:    zone,
		SubZone: subzone,
	}
}

// ALPNH2Only advertises that Proxy is going to use HTTP/2 when talking to the cluster.
var ALPNH2Only = []string{"h2"}