}

func (wg *WaitGroup) Add(i int32) {
	select {
	case <-wg.done:
		panic("use of an already closed WaitGroup")
	default:
	}
	atomic.AddInt32(&wg.count, i)
}

func (wg *WaitGroup) Done() {
	i := atomic.AddInt32(&wg.count, -1)
	if i == 0 {
		close(wg.done)
	}
}

func (wg *WaitGroup) C() <-chan struct{} {
	return wg.done

  while read -r value; do
    CLUSTER_NAMES+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.cluster_name // .clusterName')

  while read -r value; do
    CLUSTER_POD_SUBNETS+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.pod_subnet // .podSubnet')

  while read -r value; do
    CLUSTER_SVC_SUBNETS+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.svc_subnet // .svcSubnet')

		"",
	).Return(nil)

	server := &meshDataplane{
		kubeClient: client.Kube(),
		netServer:  fs,
	}

	handlers := setupHandlers(ctx, client, server, "istio-system")
	client.RunAndWait(ctx.Done())
	go handlers.Start()

	// label the namespace
	labelsPatch := []byte(fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`,
		constants.DataplaneModeLabel, constants.DataplaneModeAmbient))

	}

	rc, err := NewRepairController(client, cfg)
	if err != nil {
		repairLog.Fatalf("Fatal error constructing repair controller: %+v", err)
	}
	go rc.Run(ctx.Done())
	client.RunAndWait(ctx.Done())
}

// Set up Kubernetes client using kubeconfig (or in-cluster config if no file provided)
func clientSetup() (kube.Client, error) {
	config, err := kube.DefaultRestConfig("", "")
	if err != nil {

	if util.PodRedirectionEnabled(ns, pod) {
		return pod, nil
	}
	return nil, nil
}

func (s *InformerHandlers) Start() {
	kube.WaitForCacheSync("informer", s.ctx.Done(), s.pods.HasSynced, s.namespaces.HasSynced)
	go s.queue.Run(s.ctx.Done())
}

func (s *InformerHandlers) GetAmbientPods() []*corev1.Pod {
	var pods []*corev1.Pod
	for _, pod := range s.pods.List(metav1.NamespaceAll, klabels.Everything()) {

	wg.Add(1)

	// Start the callback in a new green thread so that if we later fail
	// to switch the namespace back to the original one, we can safely
	// leave the thread locked to die without a risk of the current thread
	// left lingering with incorrect namespace.
	var innerError error
	go func() {
		defer wg.Done()
		runtime.LockOSThread()
		innerError = containedCall()
	}()
	wg.Wait()

	return innerError

	req := updateRequest{
		Update: data,
		Fd:     fd,
		Resp:   ret,
	}
	select {
	case z.Updates <- req:
	case <-ctx.Done():
		return nil, ctx.Err()
	}

	select {
	case r := <-ret:
		return r.resp, r.err
	case <-ctx.Done():
		return nil, ctx.Err()
	}
}

	// There should be 1 or 2 processes that match: the pause container should always be there, and the istio-validation *might*.
	// We want the pause container, as the istio-validation one may exit before we are done.
	// We do this by detecting the longest running process. We could look at `cmdline`, but is likely more reliable to weird platforms.
	for _, p := range procs {
		ns := getPidNamespace(p.PID)

    Client--Plain-->CZ
    CZ-."HBONE (target)".->Server
    CZ--"HBONE (actual)"-->SZ
    SZ--Plain-->Server
```

### Pooling

User connections can be multiplexed over shared HBONE connections.
This is done through standard HTTP/2 pooling.
The pooling is keyed off the `{source identity, destination identity, destination ip}`.

### Headers

Ztunnel uses the following well-known headers in HBONE:

	if err != nil {
		return probeSet, err
	}
	probeSet.Flush()
	return probeSet, nil
}

func (s *Server) Start() {
	log.Info("CNI ambient server starting")
	s.kubeClient.RunAndWait(s.ctx.Done())
	log.Info("CNI ambient server kubeclient started")
	pods := s.handlers.GetAmbientPods()
	err := s.dataplane.ConstructInitialSnapshot(pods)
	if err != nil {
		log.Warnf("failed to construct initial snapshot: %v", err)