mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-03 11:48:15 +00:00
126 lines
3.7 KiB
Go
126 lines
3.7 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors All rights reserved.
|
|
|
|
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 gc
|
|
|
|
import (
|
|
"sort"
|
|
"sync"
|
|
"time"
|
|
|
|
"k8s.io/kubernetes/pkg/api"
|
|
"k8s.io/kubernetes/pkg/client/cache"
|
|
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/release_1_2"
|
|
"k8s.io/kubernetes/pkg/controller"
|
|
"k8s.io/kubernetes/pkg/controller/framework"
|
|
"k8s.io/kubernetes/pkg/fields"
|
|
"k8s.io/kubernetes/pkg/labels"
|
|
"k8s.io/kubernetes/pkg/runtime"
|
|
"k8s.io/kubernetes/pkg/util"
|
|
utilruntime "k8s.io/kubernetes/pkg/util/runtime"
|
|
"k8s.io/kubernetes/pkg/watch"
|
|
|
|
"github.com/golang/glog"
|
|
)
|
|
|
|
const (
|
|
gcCheckPeriod = 20 * time.Second
|
|
)
|
|
|
|
type GCController struct {
|
|
kubeClient clientset.Interface
|
|
podStore cache.StoreToPodLister
|
|
podStoreSyncer *framework.Controller
|
|
deletePod func(namespace, name string) error
|
|
threshold int
|
|
}
|
|
|
|
func New(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, threshold int) *GCController {
|
|
gcc := &GCController{
|
|
kubeClient: kubeClient,
|
|
threshold: threshold,
|
|
deletePod: func(namespace, name string) error {
|
|
return kubeClient.Legacy().Pods(namespace).Delete(name, api.NewDeleteOptions(0))
|
|
},
|
|
}
|
|
|
|
terminatedSelector := fields.ParseSelectorOrDie("status.phase!=" + string(api.PodPending) + ",status.phase!=" + string(api.PodRunning) + ",status.phase!=" + string(api.PodUnknown))
|
|
|
|
gcc.podStore.Store, gcc.podStoreSyncer = framework.NewInformer(
|
|
&cache.ListWatch{
|
|
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
|
|
options.FieldSelector = terminatedSelector
|
|
return gcc.kubeClient.Legacy().Pods(api.NamespaceAll).List(options)
|
|
},
|
|
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
|
|
options.FieldSelector = terminatedSelector
|
|
return gcc.kubeClient.Legacy().Pods(api.NamespaceAll).Watch(options)
|
|
},
|
|
},
|
|
&api.Pod{},
|
|
resyncPeriod(),
|
|
framework.ResourceEventHandlerFuncs{},
|
|
)
|
|
return gcc
|
|
}
|
|
|
|
func (gcc *GCController) Run(stop <-chan struct{}) {
|
|
go gcc.podStoreSyncer.Run(stop)
|
|
go util.Until(gcc.gc, gcCheckPeriod, stop)
|
|
<-stop
|
|
}
|
|
|
|
func (gcc *GCController) gc() {
|
|
terminatedPods, _ := gcc.podStore.List(labels.Everything())
|
|
terminatedPodCount := len(terminatedPods)
|
|
sort.Sort(byCreationTimestamp(terminatedPods))
|
|
|
|
deleteCount := terminatedPodCount - gcc.threshold
|
|
|
|
if deleteCount > terminatedPodCount {
|
|
deleteCount = terminatedPodCount
|
|
}
|
|
if deleteCount > 0 {
|
|
glog.Infof("garbage collecting %v pods", deleteCount)
|
|
}
|
|
|
|
var wait sync.WaitGroup
|
|
for i := 0; i < deleteCount; i++ {
|
|
wait.Add(1)
|
|
go func(namespace string, name string) {
|
|
defer wait.Done()
|
|
if err := gcc.deletePod(namespace, name); err != nil {
|
|
// ignore not founds
|
|
defer utilruntime.HandleError(err)
|
|
}
|
|
}(terminatedPods[i].Namespace, terminatedPods[i].Name)
|
|
}
|
|
wait.Wait()
|
|
}
|
|
|
|
// byCreationTimestamp sorts a list by creation timestamp, using their names as a tie breaker.
|
|
type byCreationTimestamp []*api.Pod
|
|
|
|
func (o byCreationTimestamp) Len() int { return len(o) }
|
|
func (o byCreationTimestamp) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
|
|
|
|
func (o byCreationTimestamp) Less(i, j int) bool {
|
|
if o[i].CreationTimestamp.Equal(o[j].CreationTimestamp) {
|
|
return o[i].Name < o[j].Name
|
|
}
|
|
return o[i].CreationTimestamp.Before(o[j].CreationTimestamp)
|
|
}
|