layer1: run managed namespace watchers

pkg/utils/namespace_manager.go

@@ -117,6 +117,12 @@ func PrepareManagedNamespaceWatcher(ctx context.Context, logger *zap.Logger, com
 	return manager, handlers, err
 }
 
+func RunManagedNamespaceWatcher(ctx context.Context, logger *zap.Logger, component string, kubeClient kubernetes.Interface, mgr managerPkg.Interface, namespaces []string, removalStrategy NamespaceRemovalStrategy, subscriber NamespaceSubscriber) (NamespaceManager, error) {
+	manager, handlers, err := PrepareManagedNamespaceWatcher(ctx, logger, component, namespaces, removalStrategy, subscriber)
+	StartManagedNamespaceWatcher(ctx, logger, component, kubeClient, mgr, handlers)
+	return manager, err
+}
+
 func LogNamespaceManagerSummary(logger *zap.Logger, message string, summary NamespaceManagerSummary) {
 	if logger == nil {
 		return

pkg/utils/namespace_manager_test.go

@@ -9,7 +9,10 @@ import (
 
 	"go.uber.org/zap"
 	corev1 "k8s.io/api/core/v1"
+	k8sfake "k8s.io/client-go/kubernetes/fake"
 	k8sCache "k8s.io/client-go/tools/cache"
+
+	managerPkg "github.com/fission/fission/pkg/utils/manager"
 )
 
 type testNamespaceSubscriber struct {
@@ -458,6 +461,20 @@ func TestPrepareManagedNamespaceWatcher(t *testing.T) {
 	}
 }
 
+func TestRunManagedNamespaceWatcher(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	router := &testNamespaceSubscriber{name: "router"}
+	logger := zap.NewNop()
+	manager, err := RunManagedNamespaceWatcher(ctx, logger, "router.NSWatcher", k8sfake.NewSimpleClientset(), managerPkg.New(), []string{"tenant-a"}, NamespaceRemovalStrategyTrackOnly, router)
+	if err != nil {
+		t.Fatalf("expected managed namespace watcher run success: %v", err)
+	}
+	if !reflect.DeepEqual([]string{"tenant-a"}, manager.Snapshot()) {
+		t.Fatalf("expected watcher manager snapshot to contain bootstrapped namespace")
+	}
+}
+
 func TestNamespaceManagerSummary(t *testing.T) {
 	manager := NewNamespaceManager()
 	manager.Upsert(NamespaceEvent{Type: NamespaceEventAdd, Name: "tenant-a", Source: NamespaceSourceWatcher})