98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
/*
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Copyright 2022 The Kruise Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package discovery
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import (
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"fmt"
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"k8s.io/klog/v2"
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"time"
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"github.com/openkruise/kruise-game/pkg/client"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/util/retry"
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"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
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)
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var (
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internalScheme = runtime.NewScheme()
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errKindNotFound = fmt.Errorf("kind not found in group version resources")
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backOff = wait.Backoff{
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Steps: 4,
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Duration: 500 * time.Millisecond,
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Factor: 5.0,
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Jitter: 0.1,
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}
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)
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func init() {
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_ = AddToScheme(internalScheme)
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}
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func DiscoverGVK(gvk schema.GroupVersionKind) bool {
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genericClient := client.GetGenericClient()
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if genericClient == nil {
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return true
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}
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discoveryClient := genericClient.DiscoveryClient
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startTime := time.Now()
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err := retry.OnError(backOff, func(err error) bool { return true }, func() error {
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resourceList, err := discoveryClient.ServerResourcesForGroupVersion(gvk.GroupVersion().String())
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if err != nil {
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return err
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}
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for _, r := range resourceList.APIResources {
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if r.Kind == gvk.Kind {
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return nil
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}
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}
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return errKindNotFound
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})
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if err != nil {
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if err == errKindNotFound {
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klog.Warningf("Not found kind %s in group version %s, waiting time %s", gvk.Kind, gvk.GroupVersion().String(), time.Since(startTime))
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return false
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}
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// This might be caused by abnormal apiserver or etcd, ignore it
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klog.Errorf("Failed to find resources in group version %s: %v, waiting time %s", gvk.GroupVersion().String(), err, time.Since(startTime))
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}
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return true
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}
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func DiscoverObject(obj runtime.Object) bool {
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gvk, err := apiutil.GVKForObject(obj, internalScheme)
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if err != nil {
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klog.Warningf("Not recognized object %T in scheme: %v", obj, err)
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return false
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}
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return DiscoverGVK(gvk)
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}
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// AddToSchemes may be used to add all resources defined in the project to a Scheme
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var AddToSchemes runtime.SchemeBuilder
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// AddToScheme adds all Resources to the Scheme
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func AddToScheme(s *runtime.Scheme) error {
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return AddToSchemes.AddToScheme(s)
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}
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