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Introduce rolebinding controller to handle rbacs
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166 changes: 166 additions & 0 deletions
166
components/odh-notebook-controller/controllers/notebook_rbac.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| /* | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package controllers | ||
|
|
||
| import ( | ||
| "context" | ||
| "reflect" | ||
|
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||
| nbv1 "github.com/kubeflow/kubeflow/components/notebook-controller/api/v1" | ||
| rbacv1 "k8s.io/api/rbac/v1" | ||
| apierrs "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| ) | ||
|
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||
| // NewRoleBinding defines the desired RoleBinding or ClusterRoleBinding object. | ||
| // Parameters: | ||
| // - notebook: The Notebook resource instance for which the RoleBinding or ClusterRoleBinding is being created. | ||
| // - rolebindingName: The name to assign to the RoleBinding or ClusterRoleBinding object. | ||
| // - roleRefKind: The kind of role reference to bind to, which can be either Role or ClusterRole. | ||
| // - roleRefName: The name of the Role or ClusterRole to reference. | ||
| func NewRoleBinding(notebook *nbv1.Notebook, rolebindingName, roleRefKind, roleRefName string) *rbacv1.RoleBinding { | ||
| return &rbacv1.RoleBinding{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: rolebindingName, | ||
| Namespace: notebook.Namespace, | ||
| Labels: map[string]string{ | ||
| "notebook-name": notebook.Name, | ||
| }, | ||
| }, | ||
| Subjects: []rbacv1.Subject{ | ||
| { | ||
| Kind: "ServiceAccount", | ||
| Name: notebook.Name, | ||
| Namespace: notebook.Namespace, | ||
| }, | ||
| }, | ||
| RoleRef: rbacv1.RoleRef{ | ||
| Kind: roleRefKind, | ||
| Name: roleRefName, | ||
| APIGroup: "rbac.authorization.k8s.io", | ||
| }, | ||
| } | ||
| } | ||
|
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| // checkRoleExists checks if a Role or ClusterRole exists in the namespace. | ||
| func (r *OpenshiftNotebookReconciler) checkRoleExists(ctx context.Context, roleRefKind, roleRefName, namespace string) (bool, error) { | ||
| if roleRefKind == "ClusterRole" { | ||
| // Check ClusterRole if roleRefKind is ClusterRole | ||
| clusterRole := &rbacv1.ClusterRole{} | ||
| err := r.Get(ctx, types.NamespacedName{Name: roleRefName}, clusterRole) | ||
| if err != nil { | ||
| if apierrs.IsNotFound(err) { | ||
| // ClusterRole not found | ||
| return false, nil | ||
| } | ||
| return false, err // Some other error occurred | ||
| } | ||
| } else { | ||
| // Check Role if roleRefKind is Role | ||
| role := &rbacv1.Role{} | ||
| err := r.Get(ctx, types.NamespacedName{Name: roleRefName, Namespace: namespace}, role) | ||
| if err != nil { | ||
| if apierrs.IsNotFound(err) { | ||
| // Role not found | ||
| return false, nil | ||
| } | ||
| return false, err // Some other error occurred | ||
| } | ||
| } | ||
| return true, nil // Role or ClusterRole exists | ||
| } | ||
|
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| // Helper function to delete the RoleBinding if the notebooks deleted | ||
| func (r *OpenshiftNotebookReconciler) deleteRoleBinding(ctx context.Context, rolebindingName, namespace string) error { | ||
| roleBinding := &rbacv1.RoleBinding{} | ||
| err := r.Get(ctx, types.NamespacedName{Name: rolebindingName, Namespace: namespace}, roleBinding) | ||
| if err != nil { | ||
| if apierrs.IsNotFound(err) { | ||
| return nil // RoleBinding not found, nothing to delete | ||
| } | ||
| return err // Some other error occurred | ||
| } | ||
|
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| // Delete the RoleBinding | ||
| return r.Delete(ctx, roleBinding) | ||
| } | ||
|
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| // reconcileRoleBinding manages creation, update, and deletion of RoleBindings and ClusterRoleBindings | ||
| func (r *OpenshiftNotebookReconciler) reconcileRoleBinding( | ||
| notebook *nbv1.Notebook, ctx context.Context, rolebindingName, roleRefKind, roleRefName string) error { | ||
|
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| log := r.Log.WithValues("notebook", types.NamespacedName{Name: notebook.Name, Namespace: notebook.Namespace}) | ||
|
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| // Check if the Role or ClusterRole exists before proceeding | ||
| roleExists, err := r.checkRoleExists(ctx, roleRefKind, roleRefName, notebook.Namespace) | ||
| if err != nil { | ||
| log.Error(err, "Error checking if Role exists", "Role.Kind", roleRefKind, "Role.Name", roleRefName) | ||
| return err | ||
| } | ||
| if !roleExists { | ||
| return nil // Skip if dspa Role is not found on the namespace | ||
| } | ||
|
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| // Create a new RoleBinding based on provided parameters | ||
| roleBinding := NewRoleBinding(notebook, rolebindingName, roleRefKind, roleRefName) | ||
|
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| // Check if the RoleBinding already exists | ||
| found := &rbacv1.RoleBinding{} | ||
| err = r.Get(ctx, types.NamespacedName{Name: rolebindingName, Namespace: notebook.Namespace}, found) | ||
| if err != nil && apierrs.IsNotFound(err) { | ||
| log.Info("Creating RoleBinding", "RoleBinding.Namespace", roleBinding.Namespace, "RoleBinding.Name", roleBinding.Name) | ||
| err = r.Create(ctx, roleBinding) | ||
| if err != nil { | ||
| log.Error(err, "Failed to create RoleBinding", "RoleBinding.Namespace", roleBinding.Namespace, "RoleBinding.Name", roleBinding.Name) | ||
| return err | ||
| } | ||
| return nil | ||
| } else if err != nil { | ||
| log.Error(err, "Failed to get RoleBinding") | ||
| return err | ||
| } | ||
|
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||
| // Update RoleBinding if the subjects differ | ||
| if !reflect.DeepEqual(roleBinding.Subjects, found.Subjects) { | ||
| log.Info("Updating RoleBinding", "RoleBinding.Namespace", roleBinding.Namespace, "RoleBinding.Name", roleBinding.Name) | ||
| err = r.Update(ctx, roleBinding) | ||
| if err != nil { | ||
| log.Error(err, "Failed to update RoleBinding", "RoleBinding.Namespace", roleBinding.Namespace, "RoleBinding.Name", roleBinding.Name) | ||
| return err | ||
| } | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| // ReconcileRoleBindings will manage multiple RoleBinding and ClusterRoleBinding reconciliations | ||
| func (r *OpenshiftNotebookReconciler) ReconcileRoleBindings( | ||
| notebook *nbv1.Notebook, ctx context.Context) error { | ||
|
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| // Reconcile a RoleBinding for pipelines for the notebook service account | ||
| roleBindingName := "elyra-pipelines-" + notebook.Name | ||
| if err := r.reconcileRoleBinding(notebook, ctx, roleBindingName, "Role", "ds-pipeline-user-access-dspa"); err != nil { | ||
| return err | ||
| } | ||
|
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| // If the notebook is marked for deletion, remove the associated RoleBinding | ||
| if !notebook.ObjectMeta.DeletionTimestamp.IsZero() { | ||
| return r.deleteRoleBinding(ctx, roleBindingName, notebook.Namespace) | ||
| } | ||
|
|
||
| return nil | ||
| } |