-
Notifications
You must be signed in to change notification settings - Fork 590
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Make EventPolicy EventHandler generic
- Loading branch information
Showing
2 changed files
with
118 additions
and
82 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| Copyright 2023 The Knative 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 reconciler | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/client-go/tools/cache" | ||
| "knative.dev/eventing/pkg/apis/eventing/v1alpha1" | ||
| ) | ||
|
|
||
| // enqueueApplyingResourcesOfEventPolicy checks if the given GVK is referenced in the given EventPolicy. | ||
| // If so, it enqueues it into the enqueueFn(). | ||
| func enqueueApplyingResourcesOfEventPolicy(indexer cache.Indexer, gvk schema.GroupVersionKind, policyObj interface{}, enqueueFn func(key types.NamespacedName)) { | ||
| eventPolicy, ok := policyObj.(*v1alpha1.EventPolicy) | ||
| if !ok { | ||
| return | ||
| } | ||
|
|
||
| for _, to := range eventPolicy.Spec.To { | ||
| if to.Ref != nil { | ||
| toGV, err := schema.ParseGroupVersion(to.Ref.APIVersion) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
|
||
| if strings.EqualFold(toGV.Group, gvk.Group) && | ||
| strings.EqualFold(to.Ref.Kind, gvk.Kind) { | ||
|
|
||
| enqueueFn(types.NamespacedName{ | ||
| Namespace: eventPolicy.Namespace, | ||
| Name: to.Ref.Name, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| if to.Selector != nil { | ||
| selectorGV, err := schema.ParseGroupVersion(to.Selector.APIVersion) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
|
||
| if strings.EqualFold(selectorGV.Group, gvk.Group) && | ||
| strings.EqualFold(to.Selector.Kind, gvk.Kind) { | ||
|
|
||
| selector, err := metav1.LabelSelectorAsSelector(to.Selector.LabelSelector) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
|
||
| resources := []metav1.Object{} | ||
| err = cache.ListAllByNamespace(indexer, eventPolicy.Namespace, selector, func(i interface{}) { | ||
| resources = append(resources, i.(metav1.Object)) | ||
| }) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
|
||
| for _, resource := range resources { | ||
| enqueueFn(types.NamespacedName{ | ||
| Namespace: resource.GetNamespace(), | ||
| Name: resource.GetName(), | ||
| }) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // EventPolicyEventHandler returns an ResourceEventHandler, which enqueues the referencing resources of the EventPolicy | ||
| // if the EventPolicy was referencing or got updated and now is referencing the resource of the given GVK. | ||
| func EventPolicyEventHandler(indexer cache.Indexer, gvk schema.GroupVersionKind, enqueueFn func(key types.NamespacedName)) cache.ResourceEventHandler { | ||
| return cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| enqueueApplyingResourcesOfEventPolicy(indexer, gvk, obj, enqueueFn) | ||
| }, | ||
| UpdateFunc: func(oldObj, newObj interface{}) { | ||
| // Here we need to check if the old or the new EventPolicy was referencing the given GVK | ||
|
|
||
| // make sure, we enqueue the keys only once | ||
| toEnqueue := map[types.NamespacedName]struct{}{} | ||
| addToEnqueueList := func(key types.NamespacedName) { | ||
| toEnqueue[key] = struct{}{} | ||
| } | ||
| enqueueApplyingResourcesOfEventPolicy(indexer, gvk, oldObj, addToEnqueueList) | ||
| enqueueApplyingResourcesOfEventPolicy(indexer, gvk, newObj, addToEnqueueList) | ||
|
|
||
| for k := range toEnqueue { | ||
| enqueueFn(k) | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| enqueueApplyingResourcesOfEventPolicy(indexer, gvk, obj, enqueueFn) | ||
| }, | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters