{
			name: "with-metadata",
			json: &structpb.Struct{
				Fields: map[string]*structpb.Value{
					"key1": {Kind: &structpb.Value_StringValue{StringValue: "%METADATA(CLUSTER:istio)%"}},
				},
			},
			expected: []*core.TypedExtensionConfig{
				metadataFormatter,
			},
		},
		{
			name: "with-both",
			json: &structpb.Struct{
				Fields: map[string]*structpb.Value{

	// the reason why Envoy rejects a request.
	EnvoyJSONLogFormatIstio = &structpb.Struct{
		Fields: map[string]*structpb.Value{
			"start_time":                        {Kind: &structpb.Value_StringValue{StringValue: "%START_TIME%"}},
			"route_name":                        {Kind: &structpb.Value_StringValue{StringValue: "%ROUTE_NAME%"}},
			"method":                            {Kind: &structpb.Value_StringValue{StringValue: "%REQ(:METHOD)%"}},

				FilterMetadata: map[string]*structpb.Struct{
					util.IstioMetadataKey: {
						Fields: map[string]*structpb.Value{
							"services": {
								Kind: &structpb.Value_ListValue{
									ListValue: &structpb.ListValue{
										Values: []*structpb.Value{
											{
												Kind: &structpb.Value_StructValue{
													StructValue: &structpb.Struct{
														Fields: map[string]*structpb.Value{

		metadata = &core.Metadata{
			FilterMetadata: map[string]*structpb.Struct{},
		}
	}

	if _, ok := metadata.FilterMetadata[IstioMetadataKey]; !ok {
		metadata.FilterMetadata[IstioMetadataKey] = &structpb.Struct{
			Fields: map[string]*structpb.Value{},
		}
	}

	metadata.FilterMetadata[IstioMetadataKey].Fields["alpn_override"] = &structpb.Value{
		Kind: &structpb.Value_StringValue{
			StringValue: "false",
		},
	}

						Labels: &structpb.Struct{
							Fields: map[string]*structpb.Value{
								"req1": {Kind: &structpb.Value_StringValue{StringValue: "%REQ_WITHOUT_QUERY(key1:val1)%"}},
								"req2": {Kind: &structpb.Value_StringValue{StringValue: "%REQ_WITHOUT_QUERY(key2:val1)%"}},
								"key1": {Kind: &structpb.Value_StringValue{StringValue: "%METADATA(CLUSTER:istio)%"}},

	}
}

// 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
					"host": {
						Kind: &structpb.Value_StringValue{

	IngressPorts         []*structpb.Struct    `protobuf:"bytes,36,rep,name=ingressPorts,proto3" json:"ingressPorts,omitempty"`
	AdditionalContainers []*structpb.Struct    `protobuf:"bytes,37,rep,name=additionalContainers,proto3" json:"additionalContainers,omitempty"`
	ConfigVolumes        []*structpb.Struct    `protobuf:"bytes,38,rep,name=configVolumes,proto3" json:"configVolumes,omitempty"`

		return
	}

	im := getOrCreateIstioMetadata(cluster)

	// Add services field into istio metadata
	im.Fields["services"] = &structpb.Value{
		Kind: &structpb.Value_ListValue{
			ListValue: &structpb.ListValue{
				Values: []*structpb.Value{},
			},
		},
	}

	svcMetaList := im.Fields["services"].GetListValue()

					FilterMetadata: map[string]*structpb.Struct{
						util.IstioMetadataKey: {
							Fields: map[string]*structpb.Value{
								"services": {Kind: &structpb.Value_ListValue{ListValue: &structpb.ListValue{Values: []*structpb.Value{
									{Kind: &structpb.Value_StructValue{StructValue: &structpb.Struct{Fields: map[string]*structpb.Value{
										"host": {
											Kind: &structpb.Value_StringValue{

				VirtualInboundListener:  lb.virtualInboundListener,
			}

			assert.Equal(t, got, tt.want)
		})
	}
}

func buildPatchStruct(config string) *structpb.Struct {
	val := &structpb.Struct{}
	_ = protomarshal.UnmarshalString(config, val)
	return val
}

func getEnvoyFilterConfigs(configPatches []*networking.EnvoyFilter_EnvoyConfigObjectPatch) []config.Config {