import "testing"

func TestOpenNetns(t *testing.T) {
	ns, err := OpenNetns("/proc/self/ns/net")
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	// the inode for netns is proc dynamic, so it needs to be higher than
	// #define PROC_DYNAMIC_FIRST 0xF0000000U

	if ns.Inode() < 0xF0000000 {
		t.Fatalf("unexpected inode: %v", ns.Inode())
	}
	defer ns.Close()

	cmd.PersistentFlags().StringVar(&loggerLevelString, "level", loggerLevelString,
		fmt.Sprintf("Comma-separated minimum per-logger level of messages to output, in the form of"+
			" [<logger>:]<level>,[<logger>:]<level>,... or <level> to change all active loggers, "+
			"where logger components can be listed by running \"istioctl ztunnel-config log <pod-name[.namespace]>\""+
			", and level can be one of %s", levelListString))

// If the K8s version is not at least the `MinK8SVersion`, it logs a message warning the user that they
// may experience problems if they proceed with the install.
func IsK8VersionSupported(c kube.Client, l clog.Logger) error {
	serverVersion, err := c.GetKubernetesVersion()
	if err != nil {
		return fmt.Errorf("error getting Kubernetes version: %w", err)
	}
	if !kube.IsAtLeastVersion(c, MinK8SVersion) {

	// Start UDS log server
	udsSockDir := t.TempDir()
	udsSock := filepath.Join(udsSockDir, "cni.sock")
	logger := NewUDSLogger()
	pluginLog.SetOutputLevel(log.DebugLevel) // this will be configured by global.logging.level
	stop := make(chan struct{})
	defer close(stop)
	assert.NoError(t, logger.StartUDSLogServer(udsSock, stop))

	// Configure log to tee to UDS server
	stdout := os.Stdout
	r, w, _ := os.Pipe()

*All Istio Kubernetes usage should use this library and not operate on Kubernetes clients directly.*

**`kclient.Client`** is a higher level wrapper around a Kubernetes resource, and is built up of sub-parts `kclient.Reader`, `kclient.Writer`, and `kclient.Informer`.
Typically, the whole `kclient.Client` is used,though.

Functionality offered by `kclient` includes:

  volumes: []

  # A list of `VolumeMounts` added into the Gateway Pods. See
  # https://kubernetes.io/docs/concepts/storage/volumes/.
  volumeMounts: []

  # Configure this to a higher priority class in order to make sure your Istio gateway pods
  # will not be killed because of low priority class.
  # Refer to https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#priorityclass

            desc: "don't use the protojson package directly; use util/protomarshal instead"
          - pkg: gomodules.xyz/jsonpatch/v3
            desc: "don't use v3; v2 is orders of magnitude higher performance"
          - pkg: k8s.io/apimachinery/pkg/util/sets
            desc: "use istio.io/istio/pkg/util/sets"
          - pkg: k8s.io/utils/env
            desc: "use istio.io/istio/pkg/env"

	}
	prettyJSON, err := json.MarshalIndent(decoded, "", "    ")
	if err != nil {
		return "", err
	}
	return string(prettyJSON), nil
}

func profileDump(args []string, pdArgs *profileDumpArgs, l clog.Logger) error {
	if len(args) == 1 && pdArgs.inFilenames != nil {
		return fmt.Errorf("cannot specify both profile name and filename flag")
	}

	if err := validateProfileOutputFormatFlag(pdArgs.outputFormat); err != nil {

  // that may be executing at a time --- for each such priority
  // level:
  //
  //             ACV(l) = ceil( SCL * ACS(l) / ( sum[priority levels k] ACS(k) ) )
  //
  // bigger numbers of ACS mean more reserved concurrent requests (at the
  // expense of every other PL).
  // This field has a default value of 30.
  // +optional
  optional int32 assuredConcurrencyShares = 1;

  // Limited priority levels in proportion to their NCS values:
  //
  // NominalCL(i)  = ceil( ServerCL * NCS(i) / sum_ncs )
  // sum_ncs = sum[limited priority level k] NCS(k)
  //
  // Bigger numbers mean a larger nominal concurrency limit,
  // at the expense of every other Limited priority level.
  // This field has a default value of 30.
  // +optional
  optional int32 nominalConcurrencyShares = 1;