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controlplane: Introduce authz package
This commit adds an authz package to the controlplane. This package is responsible for authorizing dataplane connections (either ingress or egress). Signed-off-by: Or Ozeri <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // Copyright 2023 The ClusterLink Authors. | ||
| // 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 authz | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
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| "github.com/sirupsen/logrus" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
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| type podReconciler struct { | ||
| client client.Client | ||
| manager *Manager | ||
| logger *logrus.Entry | ||
| } | ||
|
|
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| // Reconcile Pod objects. | ||
| func (r *podReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { | ||
| r.logger.Debugf("Reconcile: %v", req.NamespacedName) | ||
|
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| var pod v1.Pod | ||
| if err := r.client.Get(ctx, req.NamespacedName, &pod); err != nil { | ||
| if errors.IsNotFound(err) { | ||
| r.manager.deletePod(req.NamespacedName) | ||
| return ctrl.Result{}, nil | ||
| } | ||
|
|
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| r.logger.Errorf("Unable to get pod: %v", err) | ||
| return ctrl.Result{}, err | ||
| } | ||
|
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| r.manager.addPod(&pod) | ||
| return ctrl.Result{}, nil | ||
| } | ||
|
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| func newPodReconciler(manager *Manager, clnt client.Client) *podReconciler { | ||
| return &podReconciler{ | ||
| client: clnt, | ||
| manager: manager, | ||
| logger: logrus.WithField( | ||
| "component", "controlplane.authz.pod-reconciler"), | ||
| } | ||
| } | ||
|
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| // CreateControllers creates the various k8s controllers used to update the authz manager. | ||
| func CreateControllers(mgr *Manager, controllerManager ctrl.Manager) error { | ||
| k8sClient := controllerManager.GetClient() | ||
|
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| return ctrl.NewControllerManagedBy(controllerManager). | ||
| For(&v1.Pod{}). | ||
| Complete(newPodReconciler(mgr, k8sClient)) | ||
| } |
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