"envoy_ext_authz_grpc":  {},
		"zipkin":                {},
		"lightstep":             {},
		"datadog":               {},
		"opencensus":            {},
		"skywalking":            {},
		"envoy_http_als":        {},
		"envoy_tcp_als":         {},
		"opentelemetry":         {},
	}

	unexpectedProviders := make([]string, 0)

	msg := &meshconfig.MeshConfig_ExtensionProvider{}
	pb := msg.ProtoReflect()
	md := pb.Descriptor()

	"envoy_ext_authz_http",
	"envoy_ext_authz_grpc",
	"zipkin",
	"lightstep",
	"datadog",
	"opencensus",
	"stackdriver",
	"prometheus",
	"skywalking",
	"envoy_http_als",
	"envoy_tcp_als",
	"envoy_otel_als",
	"opentelemetry",
	"envoy_file_access_log",
)

func AssertProvidersHandled(expected int) {
	if expected != len(wellknownProviders) {

      zipkin:
    - name: lightstep
      lightstep:
    - name: datadog
      datadog:
    - name: opencensus
      opencensus:
    - name: skywalking
      skywalking:
    - name: envoyHttpAls
      envoyHttpAls:
    - name: envoyTcpAls
      envoyTcpAls:
    - name: opentelemetry
      opentelemetry:
  components:
    egressGateways:
    - name: istio-egressgateway
      enabled: true
      k8s:

		Lightstep          struct{} `json:"lightstep"`
		Datadog            struct{} `json:"datadog"`
		Opencensus         struct{} `json:"opencensus"`
		Skywalking         struct{} `json:"skywalking"`
		EnvoyHTTPAls       struct{} `json:"envoyHttpAls"`
		EnvoyTCPAls        struct{} `json:"envoyTcpAls"`
		OpenTelemetry      struct{} `json:"opentelemetry"`
	}
	clusterName struct {

		} else {
			al = fileAccessLogFromTelemetry(prov.EnvoyFileAccessLog)
		}
	case *meshconfig.MeshConfig_ExtensionProvider_EnvoyHttpAls:
		al = httpGrpcAccessLogFromTelemetry(push, prov.EnvoyHttpAls)
	case *meshconfig.MeshConfig_ExtensionProvider_EnvoyTcpAls:
		al = tcpGrpcAccessLogFromTelemetry(push, prov.EnvoyTcpAls)
	case *meshconfig.MeshConfig_ExtensionProvider_EnvoyOtelAls:

		case *meshconfig.MeshConfig_ExtensionProvider_EnvoyHttpAls:
			currentErrs = AppendErrors(currentErrs, ValidateExtensionProviderEnvoyHTTPAls(provider.EnvoyHttpAls))
		case *meshconfig.MeshConfig_ExtensionProvider_EnvoyTcpAls:
			currentErrs = AppendErrors(currentErrs, ValidateExtensionProviderEnvoyTCPAls(provider.EnvoyTcpAls))
			// TODO: add exhaustiveness test
		default:

	grpcHTTPCfg := &meshconfig.MeshConfig_ExtensionProvider{
		Name: "grpc-http-als",
		Provider: &meshconfig.MeshConfig_ExtensionProvider_EnvoyHttpAls{
			EnvoyHttpAls: &meshconfig.MeshConfig_ExtensionProvider_EnvoyHttpGrpcV3LogProvider{
				LogName:                         "grpc-http-als",
				Service:                         "grpc-als.foo.svc.cluster.local",