feat: Implement reconciliation for ManagedCluster and create ManagedC…

…lusterView

- Added reconciliation logic for `ManagedCluster`
- Added tests for `ManagedClusterReconciler` reconciliation logic and ensure ManagedClusterViews function.
- Reconciliation for ManagedCluster creates ManagedClusterView which pulls the ‘odf-info’ configmap onto the hub.
- Updated RBAC rules in `config/rbac/role.yaml` to include permissions for ManagedClusterView resources. (ManagedCluster RBAC already there)
- Plumbing to make the controllers work like the items above
- Updated go.mod and go.sum to include `github.com/stolostron/multicloud-operators-foundation`.
- Fixes to functions, tests and adding new predicate

Signed-off-by: vbadrina <[email protected]>

bundle/manifests/odf-multicluster-orchestrator.clusterserviceversion.yaml

@@ -36,7 +36,7 @@ metadata:
       ]
     capabilities: Basic Install
     console.openshift.io/plugins: '["odf-multicluster-console"]'
-    createdAt: "2024-04-03T11:58:23Z"
+    createdAt: "2024-07-12T13:14:27Z"
     olm.skipRange: ""
     operators.openshift.io/infrastructure-features: '["disconnected"]'
     operators.operatorframework.io/builder: operator-sdk-v1.34.1
@@ -224,6 +224,16 @@ spec:
           - roles
           verbs:
           - '*'
+        - apiGroups:
+          - view.open-cluster-management.io
+          resources:
+          - managedclusterviews
+          verbs:
+          - create
+          - get
+          - list
+          - update
+          - watch
         - apiGroups:
           - work.open-cluster-management.io
           resources:

config/rbac/role.yaml

@@ -161,6 +161,16 @@ rules:
   - roles
   verbs:
   - '*'
+- apiGroups:
+  - view.open-cluster-management.io
+  resources:
+  - managedclusterviews
+  verbs:
+  - create
+  - get
+  - list
+  - update
+  - watch
 - apiGroups:
   - work.open-cluster-management.io
   resources:

controllers/managedcluster_controller.go

@@ -0,0 +1,137 @@
+package controllers
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"strings"
+
+	"github.com/red-hat-storage/odf-multicluster-orchestrator/controllers/utils"
+	viewv1beta1 "github.com/stolostron/multicloud-operators-foundation/pkg/apis/view/v1beta1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	clusterv1 "open-cluster-management.io/api/cluster/v1"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/builder"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/predicate"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+)
+
+type ManagedClusterReconciler struct {
+	Client client.Client
+	Logger *slog.Logger
+}
+
+const (
+	OdfInfoClusterClaimNamespacedName = "odfinfo.odf.openshift.io"
+)
+
+// +kubebuilder:rbac:groups=view.open-cluster-management.io,resources=managedclusterviews,verbs=get;list;watch;create;update
+func (r *ManagedClusterReconciler) Reconcile(ctx context.Context, req reconcile.Request) (reconcile.Result, error) {
+	logger := r.Logger.With("ManagedCluster", req.NamespacedName)
+	logger.Info("Reconciling ManagedCluster")
+
+	var managedCluster clusterv1.ManagedCluster
+	if err := r.Client.Get(ctx, req.NamespacedName, &managedCluster); err != nil {
+		if client.IgnoreNotFound(err) != nil {
+			logger.Error("Failed to get ManagedCluster", "error", err)
+		}
+		return ctrl.Result{}, client.IgnoreNotFound(err)
+	}
+
+	if err := r.processManagedClusterViews(ctx, managedCluster); err != nil {
+		logger.Error("Failed to ensure ManagedClusterView", "error", err)
+		return ctrl.Result{}, err
+	}
+
+	logger.Info("Successfully reconciled ManagedCluster", "name", managedCluster.Name)
+
+	return ctrl.Result{}, nil
+}
+
+func hasRequiredODFKey(mc *clusterv1.ManagedCluster) bool {
+	claims := mc.Status.ClusterClaims
+	for _, claim := range claims {
+		if claim.Name == OdfInfoClusterClaimNamespacedName {
+			return true
+		}
+	}
+	return false
+
+}
+func (r *ManagedClusterReconciler) SetupWithManager(mgr ctrl.Manager) error {
+	r.Logger.Info("Setting up ManagedClusterReconciler with manager")
+	managedClusterPredicate := predicate.Funcs{
+		UpdateFunc: func(e event.UpdateEvent) bool {
+			obj, ok := e.ObjectNew.(*clusterv1.ManagedCluster)
+			if !ok {
+				return false
+			}
+			return hasRequiredODFKey(obj)
+		},
+		CreateFunc: func(e event.CreateEvent) bool {
+			obj, ok := e.Object.(*clusterv1.ManagedCluster)
+			if !ok {
+				return false
+			}
+			return hasRequiredODFKey(obj)
+		},
+
+		DeleteFunc: func(e event.DeleteEvent) bool {
+			return false
+		},
+		GenericFunc: func(e event.GenericEvent) bool {
+			return false
+		},
+	}
+
+	return ctrl.NewControllerManagedBy(mgr).
+		For(&clusterv1.ManagedCluster{}, builder.WithPredicates(managedClusterPredicate, predicate.GenerationChangedPredicate{})).
+		Owns(&viewv1beta1.ManagedClusterView{}).
+		Complete(r)
+}
+
+func (r *ManagedClusterReconciler) processManagedClusterViews(ctx context.Context, managedCluster clusterv1.ManagedCluster) error {
+	resourceType := "ConfigMap"
+	odfInfoConfigMapNamespacedName, err := getNamespacedNameForClusterInfo(managedCluster)
+	if err != nil {
+		return fmt.Errorf("error while getting NamespacedName of the %s. %w", resourceType, err)
+	}
+
+	enabled := true
+	disabled := false
+	mcvOwnerRef := &metav1.OwnerReference{
+		APIVersion:         managedCluster.APIVersion,
+		Kind:               managedCluster.Kind,
+		UID:                managedCluster.UID,
+		Name:               managedCluster.Name,
+		Controller:         &enabled,
+		BlockOwnerDeletion: &disabled,
+	}
+
+	mcv, operationResult, err := utils.CreateOrUpdateManagedClusterView(ctx, r.Client, odfInfoConfigMapNamespacedName.Name, odfInfoConfigMapNamespacedName.Namespace, resourceType, managedCluster.Name, mcvOwnerRef)
+	if err != nil {
+		return fmt.Errorf("failed to create or update ManagedClusterView. %w", err)
+
+	}
+	r.Logger.Info(fmt.Sprintf("ManagedClusterView was %s", operationResult), "ManagedClusterView", mcv.Name)
+
+	return nil
+}
+
+func getNamespacedNameForClusterInfo(managedCluster clusterv1.ManagedCluster) (types.NamespacedName, error) {
+	clusterClaims := managedCluster.Status.ClusterClaims
+	for _, claim := range clusterClaims {
+		if claim.Name == OdfInfoClusterClaimNamespacedName {
+			namespacedName := strings.Split(claim.Value, "/")
+			if len(namespacedName) != 2 {
+				return types.NamespacedName{}, fmt.Errorf("invalid format for namespaced name claim: expected 'namespace/name', got '%s'", claim.Value)
+			}
+			return types.NamespacedName{Namespace: namespacedName[0], Name: namespacedName[1]}, nil
+		}
+	}
+
+	return types.NamespacedName{}, fmt.Errorf("cannot find %q in ManagedCluster status", OdfInfoClusterClaimNamespacedName)
+}