SriovIBetwork: react on namespace creation

Apply the same namespace reaction as the SriovNetwork

Signed-off-by: Andrea Panattoni <apanatto@redhat.com>

controllers/sriovibnetwork_controller.go

@@ -21,12 +21,15 @@ import (
 	"reflect"
 
 	netattdefv1 "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1"
+	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/util/workqueue"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/event"
 	"sigs.k8s.io/controller-runtime/pkg/handler"
 	"sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
@@ -137,10 +140,16 @@ func (r *SriovIBNetworkReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 	}
 	// Check if this NetworkAttachmentDefinition already exists
 	found := &netattdefv1.NetworkAttachmentDefinition{}
-
 	err = r.Get(ctx, types.NamespacedName{Name: netAttDef.Name, Namespace: netAttDef.Namespace}, found)
 	if err != nil {
 		if errors.IsNotFound(err) {
+			targetNamespace := &corev1.Namespace{}
+			err = r.Get(ctx, types.NamespacedName{Name: netAttDef.Namespace}, targetNamespace)
+			if errors.IsNotFound(err) {
+				reqLogger.Info("Target namespace doesn't exist, NetworkAttachmentDefinition will be created when namespace is available", "Namespace", netAttDef.Namespace, "Name", netAttDef.Name)
+				return reconcile.Result{}, nil
+			}
+
 			reqLogger.Info("NetworkAttachmentDefinition CR not exist, creating")
 			err = r.Create(ctx, netAttDef)
 			if err != nil {
@@ -173,8 +182,30 @@ func (r *SriovIBNetworkReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 
 // SetupWithManager sets up the controller with the Manager.
 func (r *SriovIBNetworkReconciler) SetupWithManager(mgr ctrl.Manager) error {
+	// Reconcile when the target namespace is created after the SriovNetwork object.
+	namespaceHandler := handler.Funcs{
+		CreateFunc: func(e event.CreateEvent, q workqueue.RateLimitingInterface) {
+			ibNetworkList := sriovnetworkv1.SriovIBNetworkList{}
+			err := r.List(context.Background(),
+				&ibNetworkList,
+				client.MatchingFields{"spec.networkNamespace": e.Object.GetName()},
+			)
+			if err != nil {
+				log.Log.WithName("SriovIBNetworkReconciler").
+					Info("Can't list SriovIBNetworkReconciler for namespace", "resource", e.Object.GetName(), "error", err)
+			}
+
+			for _, network := range ibNetworkList.Items {
+				q.Add(reconcile.Request{NamespacedName: types.NamespacedName{
+					Namespace: network.Namespace,
+					Name:      network.Name,
+				}})
+			}
+		},
+	}
 	return ctrl.NewControllerManagedBy(mgr).
 		For(&sriovnetworkv1.SriovIBNetwork{}).
 		Watches(&source.Kind{Type: &netattdefv1.NetworkAttachmentDefinition{}}, &handler.EnqueueRequestForObject{}).
+		Watches(&source.Kind{Type: &corev1.Namespace{}}, &namespaceHandler).
 		Complete(r)
 }

controllers/sriovibnetwork_controller_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	netattdefv1 "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1"
+	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/client-go/util/retry"
@@ -189,6 +190,52 @@ var _ = Describe("SriovIBNetwork Controller", func() {
 			Expect(err).NotTo(HaveOccurred())
 		})
 	})
+
+	Context("When the target NetworkNamespace doesn't exists", func() {
+		It("should create the NetAttachDef when the namespace is created", func() {
+			cr := sriovnetworkv1.SriovIBNetwork{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-missing-namespace",
+					Namespace: testNamespace,
+				},
+				Spec: sriovnetworkv1.SriovIBNetworkSpec{
+					NetworkNamespace: "ib-ns-xxx",
+					ResourceName:     "resource_missing_namespace",
+					IPAM:             `{"type":"dhcp"}`,
+				},
+			}
+			var err error
+			expect := generateExpectedIBNetConfig(&cr)
+
+			err = k8sClient.Create(goctx.TODO(), &cr)
+			Expect(err).NotTo(HaveOccurred())
+
+			DeferCleanup(func() {
+				err = k8sClient.Delete(goctx.TODO(), &cr)
+				Expect(err).NotTo(HaveOccurred())
+			})
+
+			// Sleep 3 seconds to be sure the Reconcile loop has been invoked. This can be improved by exposing some information (e.g. the error)
+			// in the SriovIBNetwork.Status field.
+			time.Sleep(3 * time.Second)
+
+			netAttDef := &netattdefv1.NetworkAttachmentDefinition{}
+			err = k8sClient.Get(ctx, types.NamespacedName{Name: cr.GetName(), Namespace: "ib-ns-xxx"}, netAttDef)
+			Expect(err).To(HaveOccurred())
+
+			err = k8sClient.Create(goctx.TODO(), &corev1.Namespace{
+				ObjectMeta: metav1.ObjectMeta{Name: "ib-ns-xxx"},
+			})
+			Expect(err).NotTo(HaveOccurred())
+
+			err = util.WaitForNamespacedObject(netAttDef, k8sClient, "ib-ns-xxx", cr.GetName(), util.RetryInterval, util.Timeout)
+			Expect(err).NotTo(HaveOccurred())
+
+			anno := netAttDef.GetAnnotations()
+			Expect(anno["k8s.v1.cni.cncf.io/resourceName"]).To(Equal("openshift.io/" + cr.Spec.ResourceName))
+			Expect(strings.TrimSpace(netAttDef.Spec.Config)).To(Equal(expect))
+		})
+	})
 })
 
 func generateExpectedIBNetConfig(cr *sriovnetworkv1.SriovIBNetwork) string {

controllers/suite_test.go

@@ -113,6 +113,10 @@ var _ = BeforeSuite(func(done Done) {
 		return []string{o.(*sriovnetworkv1.SriovNetwork).Spec.NetworkNamespace}
 	})
 
+	k8sManager.GetCache().IndexField(context.Background(), &sriovnetworkv1.SriovIBNetwork{}, "spec.networkNamespace", func(o client.Object) []string {
+		return []string{o.(*sriovnetworkv1.SriovIBNetwork).Spec.NetworkNamespace}
+	})
+
 	err = (&SriovNetworkReconciler{
 		Client: k8sManager.GetClient(),
 		Scheme: k8sManager.GetScheme(),

main.go

@@ -130,6 +130,10 @@ func main() {
 		return []string{o.(*sriovnetworkv1.SriovNetwork).Spec.NetworkNamespace}
 	})
 
+	mgrGlobal.GetCache().IndexField(context.Background(), &sriovnetworkv1.SriovIBNetwork{}, "spec.networkNamespace", func(o client.Object) []string {
+		return []string{o.(*sriovnetworkv1.SriovIBNetwork).Spec.NetworkNamespace}
+	})
+
 	if err := initNicIDMap(); err != nil {
 		setupLog.Error(err, "unable to init NicIdMap")
 		os.Exit(1)