}

// APIGroupDiscoveryList is a resource containing a list of APIGroupDiscovery.
// This is one of the types able to be returned from the /api and /apis endpoint and contains an aggregated
// list of API resources (built-ins, Custom Resource Definitions, resources from aggregated servers)
// that a cluster supports.
message APIGroupDiscoveryList {

	path, err := getIstioVirtualServicePathForSvcFromRoute(cd, svc, port)
	if err != nil {
		return "", "", err
	}

	// Starting with recent 1.5.0 builds, the path will include .istio.io.  Handle both.
	// nolint: gosimple
	re := regexp.MustCompile("/apis/networking(\\.istio\\.io)?/v1alpha3/namespaces/(?P<namespace>[^/]+)/virtual-service/(?P<name>[^/]+)")

  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // Error is to record the problem with the service port
  // The format of the error shall comply with the following rules:
  // - built-in error values shall be specified in this file and those shall use
  //   CamelCase names
  // - cloud provider specific error values must have names that comply with the
  //   format foo.example.com/CamelCase.
  // ---

      "steppedLine": false,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "sum(istio_build) by (component, tag)",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "{{ component }}: {{ tag }}",
          "refId": "A"
        }
      ],

      },
      "pluginVersion": "10.1.5",
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "sum(istio_build{component=\"pilot\"}) by (tag)",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "{{ tag }}",
          "refId": "A"
        }
      ],

```mermaid
flowchart TD
    kcg["Kubernetes client-go"]
    ic["Istio kube.Client"]
    ikc["Istio kclient.Client"]
    ikrt["Istio krt.Collection"]
    ikrt--"Builds on"-->ikc--"Builds on"-->ic--"Builds on"-->kcg
```

**`kube.Client`** is a fairly light wrapper around Kubernetes clients, but offers quite a few benefits.

{
  "name": "istio build-tools",
  "image": "gcr.io/istio-testing/build-tools:master-b0f2fd3b4240c8178b14de4689d0e663e11868ff",
  "privileged": true,
  "remoteEnv": {
    "USE_GKE_GCLOUD_AUTH_PLUGIN": "True",
    "BUILD_WITH_CONTAINER": "0",
    "CARGO_HOME": "/home/.cargo",
    "RUSTUP_HOME": "/home/.rustup"
  },
  "features": {
    "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {},
    "ghcr.io/mpriscella/features/kind:1": {}
  },

// Kubernetes, as specified in requests and limits, describing each pod in the
// current scale target (e.g. CPU or memory).  The values will be averaged
// together before being compared to the target.  Such metrics are built in to
// Kubernetes, and have special scaling options on top of those available to
// normal per-pod metrics using the "pods" source.  Only one "target" type
// should be set.
message ContainerResourceMetricSource {

// each of the pods of the current scale target(e.g. CPU or memory). The values will be
// averaged together before being compared to the target. Such metrics are built into
// Kubernetes, and have special scaling options on top of those available to
// normal per-pod metrics using the "pods" source. Only one "target" type
// should be set.
message ContainerResourceMetricSource {

		})
	}
}

func TestMetrics(t *testing.T) {
	cases := []testutil.TestCase{
		{ // case 0
			Args:           strings.Split("details", " "),
			ExpectedRegexp: regexp.MustCompile("could not build metrics for workload"),
			WantException:  true,
		},
	}

	ctx := cli.NewFakeContext(&cli.NewFakeContextOption{
		IstioNamespace: "istio-system",
	})
	client, err := ctx.CLIClient()
	if err != nil {