return &nsMutex
}

// nsLock - provides primitives for locking critical namespace regions.
type nsLock struct {
	ref int32
	*lsync.LRWMutex
}

// nsLockMap - namespace lock map, provides primitives to Lock,
// Unlock, RLock and RUnlock.
type nsLockMap struct {
	// Indicates if namespace is part of a distributed setup.
	isDistErasure bool
	lockMap       map[string]*nsLock
	lockMapMutex  sync.Mutex

	namespace := o.GetName()
	labels := o.GetLabels()
	matchAmbient := labels[constants.DataplaneModeLabel] == constants.DataplaneModeAmbient
	if matchAmbient {
		log.Infof("Namespace %s is enabled in ambient mesh", namespace)
	} else {
		log.Infof("Namespace %s is disabled from ambient mesh", namespace)
	}
	for _, pod := range s.pods.List(namespace, klabels.Everything()) {

				Name:        "test",
				Namespace:   "test",
				Labels:      ambientEnabledLabel,
				Annotations: sidecarStatusAnnotation,
			},
		}
	)

	type args struct {
		namespace *corev1.Namespace
		pod       *corev1.Pod
	}
	tests := []struct {
		name string
		args args
		want bool
	}{
		{
			name: "ambient mode enabled for namespace",
			args: args{

		if r := cmp.Compare(a.Info.Namespace, b.Info.Namespace); r != 0 {
			return r
		}
		return cmp.Compare(a.Info.Namespace, b.Info.Namespace)
	})
	for _, wl := range workloads {
		if filter.Namespace != "" && filter.Namespace != wl.Info.Namespace {
			continue
		}
		name := fmt.Sprintf("%s.%s", wl.Info.Name, wl.Info.Namespace)
		if filter.Direction != "outbound" {

In the case of the sidecar injector, the namespace label `istio-env: <NAME_OF_ENV>` is used instead
of the conventional `istio-injected: true`. The name of the environment is defined as the namespace
where the corresponding control plane components (config, discovery, auto-injection) are running.
In the examples below, by default this is the `istio-control` namespace. Pod annotations can also
be used to select a different 'environment'.

			namespace:     "",
			wantPodName:   "istio-security-post-install-1.2.2-bm9w2",
			wantNamespace: "istio-system",
		},
		{
			proxyName:     "service/istiod",
			namespace:     "",
			wantPodName:   "service/istiod",
			wantNamespace: "",
		},
		{
			proxyName:     "service/istiod",
			namespace:     "namespace",
			wantPodName:   "service/istiod",

}

// RoleBinding references a role, but does not contain it.  It can reference a Role in the same namespace or a ClusterRole in the global namespace.
// It adds who information via Subjects and namespace information by which namespace it exists in.  RoleBindings in a given
// namespace only have effect in that namespace.
// Deprecated in v1.17 in favor of rbac.authorization.k8s.io/v1 RoleBinding, and will no longer be served in v1.22.

}

// RoleBinding references a role, but does not contain it.  It can reference a Role in the same namespace or a ClusterRole in the global namespace.
// It adds who information via Subjects and namespace information by which namespace it exists in.  RoleBindings in a given
// namespace only have effect in that namespace.
// Deprecated in v1.17 in favor of rbac.authorization.k8s.io/v1 RoleBinding, and will no longer be served in v1.22.

  "injectionURL" .Values.istiodRemote.injectionURL
  "reinvocationPolicy" .Values.sidecarInjectorWebhook.reinvocationPolicy
  "caBundle" .Values.istiodRemote.injectionCABundle
  "namespace" .Release.Namespace }}
{{- define "core" }}
{{- /* Kubernetes unfortunately requires a unique name for the webhook in some newer versions, so we assign
a unique prefix to each. */}}
- name: {{.Prefix}}sidecar-injector.istio.io

	ns := handleNamespace("test", "default")
	if ns != "test" {
		t.Fatalf("Get the incorrect namespace: %q back", ns)
	}

	tests := []struct {
		description      string
		namespace        string
		defaultNamespace string
		wantNamespace    string
	}{
		{
			description:      "return test namespace",
			namespace:        "test",
			defaultNamespace: "default",
			wantNamespace:    "test",
		},
		{