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Support gateway api BackendTLSPolicy
The BackendTLSPolicy will allow a user to connect an httproute to a backend service with TLS. - Only implements BackendTLSPolicy for HTTPRoute - Only allows Services for spec.targetRef - Allows ConfigMap or Secret for spec.TLS.CACertRefs - Adds backendtlspolicies to the ClusterRole for Contour - Adds configmaps to the ClusterRole for Contour - Controller reconciles on BackendTLSPolicy and ConfigMaps now - BackendTLSPolicy spec.targetRef can specify SectionName to be port name of a service to target a particular section of the service. Co-authored-by: Christian Ang <christian.ang@broadcom.com> Signed-off-by: Edwin Xie <edwin.xie@broadcom.com>
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| // Copyright Project Contour 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. | ||
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| package controller | ||
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| import ( | ||
| "context" | ||
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| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
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| "github.com/sirupsen/logrus" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/client-go/tools/cache" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller" | ||
| "sigs.k8s.io/controller-runtime/pkg/handler" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| "sigs.k8s.io/controller-runtime/pkg/source" | ||
| gatewayapi_v1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2" | ||
| ) | ||
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| type backendTLSPolicyReconciler struct { | ||
| client client.Client | ||
| eventHandler cache.ResourceEventHandler | ||
| logrus.FieldLogger | ||
| } | ||
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| // RegisterBackendTLSPolicyController creates the backendtlspolicy controller from mgr. The controller will be pre-configured | ||
| // to watch for BackendTLSPolicy objects across all namespaces. | ||
| func RegisterBackendTLSPolicyController(log logrus.FieldLogger, mgr manager.Manager, eventHandler cache.ResourceEventHandler) error { | ||
| r := &backendTLSPolicyReconciler{ | ||
| client: mgr.GetClient(), | ||
| eventHandler: eventHandler, | ||
| FieldLogger: log, | ||
| } | ||
| c, err := controller.NewUnmanaged("backendtlspolicy-controller", mgr, controller.Options{Reconciler: r}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if err := mgr.Add(&noLeaderElectionController{c}); err != nil { | ||
| return err | ||
| } | ||
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| return c.Watch(source.Kind(mgr.GetCache(), &gatewayapi_v1alpha2.BackendTLSPolicy{}), &handler.EnqueueRequestForObject{}) | ||
| } | ||
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| func (r *backendTLSPolicyReconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) { | ||
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| // Fetch the BackendTLSPolicy from the cache. | ||
| backendTLSPolicy := &gatewayapi_v1alpha2.BackendTLSPolicy{} | ||
| err := r.client.Get(ctx, request.NamespacedName, backendTLSPolicy) | ||
| if errors.IsNotFound(err) { | ||
| r.eventHandler.OnDelete(&gatewayapi_v1alpha2.BackendTLSPolicy{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: request.Name, | ||
| Namespace: request.Namespace, | ||
| }, | ||
| }) | ||
| return reconcile.Result{}, nil | ||
| } | ||
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| // Pass the new changed object off to the eventHandler. | ||
| r.eventHandler.OnAdd(backendTLSPolicy, false) | ||
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| return reconcile.Result{}, nil | ||
| } | ||
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