verbs: ["update", "patch"]
  - apiGroups: ["gateway.networking.k8s.io"]
    resources: ["gatewayclasses"]
    verbs: ["create", "update", "patch", "delete"]

  # Needed for multicluster secret reading, possibly ingress certs in the future
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["get", "watch", "list"]

  # Used for MCS serviceexport management
  - apiGroups: ["{{ $mcsAPIGroup }}"]

    verbs: ["update", "patch"]
  - apiGroups: ["gateway.networking.k8s.io"]
    resources: ["gatewayclasses"]
    verbs: ["create", "update", "patch", "delete"]

  # Needed for multicluster secret reading, possibly ingress certs in the future
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["get", "watch", "list"]

  # Used for MCS serviceexport management
  - apiGroups: ["{{ $mcsAPIGroup }}"]

	configDump, err := io.ReadAll(configDumpFile)
	if err != nil {
		t.Errorf("error reading test data file: %v", err)
	}

	outFile, err := os.Open("testdata/secret/output")
	if err != nil {
		t.Errorf("error opening test data output file: %v", err)
	}
	defer outFile.Close()
	expectedOut, err := io.ReadAll(outFile)
	if err != nil {
		t.Errorf("error reading test data output file: %v", err)
	}

	gotOut := &bytes.Buffer{}

	if !ok {
		err = fmt.Errorf("error reading plugin list from CNI config")
		return
	}
	return
}

// Given the raw plugin interface, return the plugin asserted as a map[string]interface{}
func GetPlugin(rawPlugin any) (plugin map[string]any, err error) {
	plugin, ok := rawPlugin.(map[string]any)
	if !ok {
		err = fmt.Errorf("error reading plugin from CNI config plugin list")
		return
	}
	return

# Controllers

Istio has a variety of [controllers](https://kubernetes.io/docs/concepts/architecture/controller/), which basically watch some inputs and do something.
This can be reading from Kubernetes and writing other objects back, writing to proxies over XDS, etc.

Unfortunately, writing controllers is very error prone, even for seemingly simple cases.
To work around this, Istio has a variety of abstractions meant to make writing controllers easier.

## Clients

the policy propagation from Istiod to Envoy and the final AuthorizationPolicy list merged
from multiple sources (mesh-level, namespace-level and workload-level).

The command also supports reading from a standalone config dump file with flag -f.`,
		Example: `  # Check AuthorizationPolicy applied to pod httpbin-88ddbcfdd-nt5jb:
  istioctl x authz check httpbin-88ddbcfdd-nt5jb

  // singularResource is the singular name of the resource.  This allows clients to handle plural and singular opaquely.
  // For many clients the singular form of the resource will be more understandable to users reading messages and should be used when integrating the name of the resource into a sentence.
  // The command line tool kubectl, for example, allows use of the singular resource name in place of plurals.