mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-03 19:58:17 +00:00
101 lines
3.2 KiB
Go
101 lines
3.2 KiB
Go
/*
|
|
Copyright 2024 The Kubernetes 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 leaderelection
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"time"
|
|
|
|
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
|
|
"k8s.io/apimachinery/pkg/util/wait"
|
|
coordinationv1alpha1informers "k8s.io/client-go/informers/coordination/v1alpha1"
|
|
"k8s.io/client-go/kubernetes"
|
|
listers "k8s.io/client-go/listers/coordination/v1alpha1"
|
|
"k8s.io/client-go/tools/cache"
|
|
|
|
"k8s.io/klog/v2"
|
|
)
|
|
|
|
type LeaseCandidateGCController struct {
|
|
kubeclientset kubernetes.Interface
|
|
|
|
leaseCandidateLister listers.LeaseCandidateLister
|
|
leaseCandidateInformer coordinationv1alpha1informers.LeaseCandidateInformer
|
|
leaseCandidatesSynced cache.InformerSynced
|
|
|
|
gcCheckPeriod time.Duration
|
|
}
|
|
|
|
// NewLeaseCandidateGC creates a new LeaseCandidateGCController.
|
|
func NewLeaseCandidateGC(clientset kubernetes.Interface, gcCheckPeriod time.Duration, leaseCandidateInformer coordinationv1alpha1informers.LeaseCandidateInformer) *LeaseCandidateGCController {
|
|
return &LeaseCandidateGCController{
|
|
kubeclientset: clientset,
|
|
leaseCandidateLister: leaseCandidateInformer.Lister(),
|
|
leaseCandidateInformer: leaseCandidateInformer,
|
|
leaseCandidatesSynced: leaseCandidateInformer.Informer().HasSynced,
|
|
gcCheckPeriod: gcCheckPeriod,
|
|
}
|
|
}
|
|
|
|
// Run starts one worker.
|
|
func (c *LeaseCandidateGCController) Run(ctx context.Context) {
|
|
defer utilruntime.HandleCrash()
|
|
defer klog.Infof("Shutting down apiserver leasecandidate garbage collector")
|
|
|
|
klog.Infof("Starting apiserver leasecandidate garbage collector")
|
|
|
|
if !cache.WaitForCacheSync(ctx.Done(), c.leaseCandidatesSynced) {
|
|
utilruntime.HandleError(fmt.Errorf("timed out waiting for caches to sync"))
|
|
return
|
|
}
|
|
|
|
go wait.UntilWithContext(ctx, c.gc, c.gcCheckPeriod)
|
|
|
|
<-ctx.Done()
|
|
}
|
|
|
|
func (c *LeaseCandidateGCController) gc(ctx context.Context) {
|
|
lcs, err := c.leaseCandidateLister.List(labels.Everything())
|
|
if err != nil {
|
|
klog.ErrorS(err, "Error while listing lease candidates")
|
|
return
|
|
}
|
|
for _, leaseCandidate := range lcs {
|
|
// evaluate lease from cache
|
|
if !isLeaseCandidateExpired(leaseCandidate) {
|
|
continue
|
|
}
|
|
lc, err := c.kubeclientset.CoordinationV1alpha1().LeaseCandidates(leaseCandidate.Namespace).Get(context.TODO(), leaseCandidate.Name, metav1.GetOptions{})
|
|
if err != nil {
|
|
klog.ErrorS(err, "Error getting lc")
|
|
continue
|
|
}
|
|
// evaluate lease from apiserver
|
|
if !isLeaseCandidateExpired(lc) {
|
|
continue
|
|
}
|
|
if err := c.kubeclientset.CoordinationV1alpha1().LeaseCandidates(lc.Namespace).Delete(
|
|
ctx, lc.Name, metav1.DeleteOptions{}); err != nil && !apierrors.IsNotFound(err) {
|
|
klog.ErrorS(err, "Error deleting lease")
|
|
}
|
|
}
|
|
}
|