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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,267 @@ | ||
| /* | ||
| Copyright 2019 The Volcano 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 queue | ||
|
|
||
| import ( | ||
| "sync" | ||
|
|
||
| "github.com/golang/glog" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/util/wait" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/client-go/util/workqueue" | ||
|
|
||
| kbv1alpha1 "github.com/kubernetes-sigs/kube-batch/pkg/apis/scheduling/v1alpha1" | ||
| kbclientset "github.com/kubernetes-sigs/kube-batch/pkg/client/clientset/versioned" | ||
| kbinformerfactory "github.com/kubernetes-sigs/kube-batch/pkg/client/informers/externalversions" | ||
| kblister "github.com/kubernetes-sigs/kube-batch/pkg/client/listers/scheduling/v1alpha1" | ||
| ) | ||
|
|
||
| // Controller manages queue status. | ||
| type Controller struct { | ||
| kubeClient kubernetes.Interface | ||
| kbClient kbclientset.Interface | ||
|
|
||
| // queueLister | ||
| queueLister kblister.QueueLister | ||
| queueSynced cache.InformerSynced | ||
|
|
||
| // podGroup lister | ||
| pgLister kblister.PodGroupLister | ||
| pgSynced cache.InformerSynced | ||
|
|
||
| // queues that need to be updated. | ||
| queue workqueue.RateLimitingInterface | ||
|
|
||
| pgMutex sync.RWMutex | ||
| podGroups map[string]map[string]struct{} | ||
| } | ||
|
|
||
| // NewQueueController creates a QueueController | ||
| func NewQueueController( | ||
| kubeClient kubernetes.Interface, | ||
| kbClient kbclientset.Interface, | ||
| ) *Controller { | ||
| factory := kbinformerfactory.NewSharedInformerFactory(kbClient, 0) | ||
| queueInformer := factory.Scheduling().V1alpha1().Queues() | ||
| pgInformer := factory.Scheduling().V1alpha1().PodGroups() | ||
|
|
||
| c := &Controller{ | ||
| kubeClient: kubeClient, | ||
| kbClient: kbClient, | ||
|
|
||
| queueLister: queueInformer.Lister(), | ||
| queueSynced: queueInformer.Informer().HasSynced, | ||
|
|
||
| pgLister: pgInformer.Lister(), | ||
| pgSynced: pgInformer.Informer().HasSynced, | ||
|
|
||
| queue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()), | ||
| podGroups: make(map[string]map[string]struct{}), | ||
| } | ||
|
|
||
| queueInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: c.addQueue, | ||
| DeleteFunc: c.deleteQueue, | ||
| }) | ||
|
|
||
| pgInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: c.addPodGroup, | ||
| UpdateFunc: c.updatePodGroup, | ||
| DeleteFunc: c.deletePodGroup, | ||
| }) | ||
|
|
||
| return c | ||
| } | ||
|
|
||
| // Run starts QueueController | ||
| func (c *Controller) Run(stopCh <-chan struct{}) { | ||
|
|
||
| if !cache.WaitForCacheSync(stopCh, c.queueSynced, c.pgSynced) { | ||
| glog.Errorf("unable to sync caches for queue controller") | ||
| return | ||
| } | ||
|
|
||
| go wait.Until(c.worker, 0, stopCh) | ||
| glog.Infof("QueueController is running ...... ") | ||
| } | ||
|
|
||
| // worker runs a worker thread that just dequeues items, processes them, and | ||
| // marks them done. You may run as many of these in parallel as you wish; the | ||
| // workqueue guarantees that they will not end up processing the same `queue` | ||
| // at the same time. | ||
| func (c *Controller) worker() { | ||
| for c.processNextWorkItem() { | ||
| } | ||
| } | ||
|
|
||
| func (c *Controller) processNextWorkItem() bool { | ||
| eKey, quit := c.queue.Get() | ||
| if quit { | ||
| return false | ||
| } | ||
| defer c.queue.Done(eKey) | ||
|
|
||
| if err := c.syncQueue(eKey.(string)); err != nil { | ||
| glog.V(2).Infof("Error syncing queues %q, retrying. Error: %v", eKey, err) | ||
| c.queue.AddRateLimited(eKey) | ||
| return true | ||
| } | ||
|
|
||
| c.queue.Forget(eKey) | ||
| return true | ||
| } | ||
|
|
||
| func (c *Controller) syncQueue(key string) error { | ||
| glog.V(5).Infoln("Begin sync queue") | ||
|
|
||
| var pending, running, unknown int32 | ||
| c.pgMutex.RLock() | ||
| podGroups := make([]string, len(c.podGroups[key])) | ||
| if c.podGroups[key] == nil { | ||
| glog.V(2).Infoln("queue %s has not been seen or deleted") | ||
| return nil | ||
| } | ||
| for pgKey := range c.podGroups[key] { | ||
| podGroups = append(podGroups, pgKey) | ||
| } | ||
| c.pgMutex.RUnlock() | ||
|
|
||
| for _, pgKey := range podGroups { | ||
| // Ignore error here, tt can not occur. | ||
| ns, name, _ := cache.SplitMetaNamespaceKey(pgKey) | ||
|
|
||
| pg, err := c.pgLister.PodGroups(ns).Get(name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| switch pg.Status.Phase { | ||
| case kbv1alpha1.PodGroupPending: | ||
| pending++ | ||
| case kbv1alpha1.PodGroupRunning: | ||
| running++ | ||
| case kbv1alpha1.PodGroupUnknown: | ||
| unknown++ | ||
| } | ||
| } | ||
|
|
||
| queue, err := c.queueLister.Get(key) | ||
| if err != nil { | ||
| if errors.IsNotFound(err) { | ||
| glog.V(2).Infof("queue %s has been deleted", queue) | ||
| return nil | ||
| } | ||
| return err | ||
| } | ||
|
|
||
| // ignore update when status doesnot change | ||
| if pending == queue.Status.Pending && running == queue.Status.Running && unknown == queue.Status.Unknown { | ||
| return nil | ||
| } | ||
|
|
||
| newQueue := queue.DeepCopy() | ||
| newQueue.Status.Pending = pending | ||
| newQueue.Status.Running = running | ||
| newQueue.Status.Unknown = unknown | ||
|
|
||
| if _, err := c.kbClient.SchedulingV1alpha1().Queues().UpdateStatus(newQueue); err != nil { | ||
| glog.Errorf("Failed to update status of Queue %s: %v", newQueue.Name, err) | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (c *Controller) addQueue(obj interface{}) { | ||
| queue := obj.(*kbv1alpha1.Queue) | ||
| c.queue.Add(queue.Name) | ||
| } | ||
|
|
||
| func (c *Controller) updateQueue(old, new interface{}) { | ||
|
|
||
| } | ||
|
|
||
| func (c *Controller) deleteQueue(obj interface{}) { | ||
| queue, ok := obj.(*kbv1alpha1.Queue) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| glog.Errorf("Couldn't get object from tombstone %#v", obj) | ||
| return | ||
| } | ||
| queue, ok = tombstone.Obj.(*kbv1alpha1.Queue) | ||
| if !ok { | ||
| glog.Errorf("Tombstone contained object that is not a Queue: %#v", obj) | ||
| return | ||
| } | ||
| } | ||
|
|
||
| c.pgMutex.Lock() | ||
| delete(c.podGroups, queue.Name) | ||
| c.pgMutex.Unlock() | ||
| } | ||
|
|
||
| func (c *Controller) addPodGroup(obj interface{}) { | ||
| pg := obj.(*kbv1alpha1.PodGroup) | ||
| key, _ := cache.MetaNamespaceKeyFunc(obj) | ||
|
|
||
| c.pgMutex.Lock() | ||
| if c.podGroups[pg.Spec.Queue] == nil { | ||
| c.podGroups[pg.Spec.Queue] = make(map[string]struct{}) | ||
| } | ||
| c.podGroups[pg.Spec.Queue][key] = struct{}{} | ||
| c.pgMutex.Unlock() | ||
|
|
||
| // enqueue | ||
| c.queue.Add(pg.Spec.Queue) | ||
| } | ||
|
|
||
| func (c *Controller) updatePodGroup(old, new interface{}) { | ||
| oldPG := old.(*kbv1alpha1.PodGroup) | ||
| newPG := new.(*kbv1alpha1.PodGroup) | ||
|
|
||
| // Note: we have no use case update PodGroup.Spec.Queue | ||
| // So do not consider it here. | ||
| if oldPG.Status.Phase != newPG.Status.Phase { | ||
| // enqueue | ||
| c.queue.Add(newPG.Spec.Queue) | ||
| } | ||
|
|
||
| } | ||
|
|
||
| func (c *Controller) deletePodGroup(obj interface{}) { | ||
| pg, ok := obj.(*kbv1alpha1.PodGroup) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| glog.Errorf("Couldn't get object from tombstone %#v", obj) | ||
| return | ||
| } | ||
| pg, ok = tombstone.Obj.(*kbv1alpha1.PodGroup) | ||
| if !ok { | ||
| glog.Errorf("Tombstone contained object that is not a PodGroup: %#v", obj) | ||
| return | ||
| } | ||
| } | ||
|
|
||
| key, _ := cache.MetaNamespaceKeyFunc(obj) | ||
| delete(c.podGroups[pg.Spec.Queue], key) | ||
|
|
||
| c.queue.Add(pg.Spec.Queue) | ||
| } |