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job_controller.go
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job_controller.go
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/*
Copyright 2023 Juicedata Inc
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 controller
import (
"context"
batchv1 "k8s.io/api/batch/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/klog"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"github.com/juicedata/juicefs-csi-driver/pkg/config"
"github.com/juicedata/juicefs-csi-driver/pkg/k8sclient"
"github.com/juicedata/juicefs-csi-driver/pkg/util/resource"
)
type JobController struct {
*k8sclient.K8sClient
}
func NewJobController(client *k8sclient.K8sClient) *JobController {
return &JobController{client}
}
func (m *JobController) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
klog.V(6).Infof("Receive job %s %s", request.Name, request.Namespace)
job, err := m.GetJob(ctx, request.Name, request.Namespace)
if err != nil && !k8serrors.IsNotFound(err) {
klog.Errorf("get job %s error: %v", request.Name, err)
return reconcile.Result{}, err
}
if job == nil {
klog.V(6).Infof("job %s has been deleted.", request.Name)
return reconcile.Result{}, nil
}
// check job deleted
if job.DeletionTimestamp != nil {
klog.V(6).Infof("job %s is deleted", job.Name)
return reconcile.Result{}, nil
}
// check if job is set nodeName or not
nodeName := job.Spec.Template.Spec.NodeName
if nodeName == "" {
// when job not set nodeName, don't need to check csi node
if resource.IsJobShouldBeRecycled(job) {
// try to delete job
klog.Infof("job %s completed but not be recycled automatically, delete it", job.Name)
if err := m.DeleteJob(ctx, job.Name, job.Namespace); err != nil {
klog.Errorf("delete job %s error %v", job.Name, err)
return reconcile.Result{}, err
}
}
return reconcile.Result{}, nil
}
needRecycled := false
// check csi node exist or not
labelSelector := metav1.LabelSelector{
MatchLabels: map[string]string{config.CSINodeLabelKey: config.CSINodeLabelValue},
}
fieldSelector := fields.Set{
"spec.nodeName": nodeName,
}
csiPods, err := m.ListPod(ctx, config.Namespace, &labelSelector, &fieldSelector)
if err != nil {
klog.Errorf("list pod by label %s and field %s error: %v", config.CSINodeLabelValue, nodeName, err)
return reconcile.Result{}, err
}
if len(csiPods) == 0 {
klog.Infof("csi node in %s not exists, job %s should be recycled.", nodeName, job.Name)
needRecycled = true
}
// if csi node not exist, or job should be recycled itself, delete it
if needRecycled || resource.IsJobShouldBeRecycled(job) {
klog.Infof("recycle job %s", job.Name)
err = m.DeleteJob(ctx, job.Name, job.Namespace)
if err != nil {
klog.Errorf("delete job %s error: %v", job.Name, err)
return reconcile.Result{Requeue: true}, err
}
}
return reconcile.Result{}, nil
}
func (m *JobController) SetupWithManager(mgr ctrl.Manager) error {
c, err := controller.New("mount", mgr, controller.Options{Reconciler: m})
if err != nil {
return err
}
return c.Watch(&source.Kind{Type: &batchv1.Job{}}, &handler.EnqueueRequestForObject{}, predicate.Funcs{
CreateFunc: func(event event.CreateEvent) bool {
job := event.Object.(*batchv1.Job)
klog.V(6).Infof("watch job %s created", job.GetName())
// check job deleted
if job.DeletionTimestamp != nil {
klog.V(6).Infof("job %s is deleted", job.Name)
return false
}
return true
},
UpdateFunc: func(updateEvent event.UpdateEvent) bool {
jobNew, ok := updateEvent.ObjectNew.(*batchv1.Job)
klog.V(6).Infof("watch job %s updated", jobNew.GetName())
if !ok {
klog.V(6).Infof("job.onUpdateFunc Skip object: %v", updateEvent.ObjectNew)
return false
}
jobOld, ok := updateEvent.ObjectOld.(*batchv1.Job)
if !ok {
klog.V(6).Infof("job.onUpdateFunc Skip object: %v", updateEvent.ObjectOld)
return false
}
if jobNew.GetResourceVersion() == jobOld.GetResourceVersion() {
klog.V(6).Info("job.onUpdateFunc Skip due to resourceVersion not changed")
return false
}
// check job deleted
if jobNew.DeletionTimestamp != nil {
klog.V(6).Infof("job %s is deleted", jobNew.Name)
return false
}
return true
},
DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
job := deleteEvent.Object.(*batchv1.Job)
klog.V(6).Infof("watch job %s deleted", job.GetName())
// check job deleted
if job.DeletionTimestamp != nil {
klog.V(6).Infof("job %s is deleted", job.Name)
return false
}
return true
},
})
}