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158 changes: 158 additions & 0 deletions
158
pkg/controller/daemonset/daemonset_predownload_image.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| /* | ||
| Copyright 2021 The Kruise 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 daemonset | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| appsv1alpha1 "github.com/openkruise/kruise/apis/apps/v1alpha1" | ||
| clonesetutils "github.com/openkruise/kruise/pkg/controller/cloneset/utils" | ||
| imagejobutilfunc "github.com/openkruise/kruise/pkg/util/imagejob/utilfunction" | ||
| "github.com/openkruise/kruise/pkg/util/inplaceupdate" | ||
| apps "k8s.io/api/apps/v1" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| intstrutil "k8s.io/apimachinery/pkg/util/intstr" | ||
| "k8s.io/klog/v2" | ||
| "k8s.io/kubernetes/pkg/controller/history" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| func (r *ReconcileDaemonSet) createImagePullJobsForInPlaceUpdate(ds *appsv1alpha1.DaemonSet, oldRevisions []*apps.ControllerRevision, updateRevision *apps.ControllerRevision) error { | ||
| if _, ok := updateRevision.Labels[appsv1alpha1.ImagePreDownloadCreatedKey]; ok { | ||
| return nil | ||
| } else if _, ok := updateRevision.Labels[appsv1alpha1.ImagePreDownloadIgnoredKey]; ok { | ||
| return nil | ||
| } | ||
|
|
||
| //// ignore if replicas <= minimumReplicasToPreDownloadImage | ||
| //if *ds.Spec.Replicas <= minimumReplicasToPreDownloadImage { | ||
| // klog.V(4).Infof("CloneSet %s/%s skipped to create ImagePullJob for replicas %d <= %d", | ||
| // ds.Namespace, ds.Name, *ds.Spec.Replicas, minimumReplicasToPreDownloadImage) | ||
| // return r.patchControllerRevisionLabels(updateRevision, appsv1alpha1.ImagePreDownloadIgnoredKey, "true") | ||
| //} | ||
|
|
||
| // ignore if all Pods update in one batch | ||
| var partition, maxUnavailable int | ||
| var dsPodsNumber = int(ds.Status.DesiredNumberScheduled) | ||
| if ds.Spec.UpdateStrategy.RollingUpdate.Partition != nil { | ||
| partition = int(*ds.Spec.UpdateStrategy.RollingUpdate.Partition) | ||
| } | ||
| maxUnavailable, _ = intstrutil.GetValueFromIntOrPercent( | ||
| intstrutil.ValueOrDefault(ds.Spec.UpdateStrategy.RollingUpdate.MaxUnavailable, intstrutil.FromInt(1)), dsPodsNumber, false) | ||
| if partition == 0 && maxUnavailable >= dsPodsNumber { | ||
| klog.V(4).Infof("DaemonSet %s/%s skipped to create ImagePullJob for all Pods update in one batch, replicas=%d, partition=%d, maxUnavailable=%d", | ||
| ds.Namespace, ds.Name, dsPodsNumber, partition, maxUnavailable) | ||
| return r.patchControllerRevisionLabels(updateRevision, appsv1alpha1.ImagePreDownloadIgnoredKey, "true") | ||
| } | ||
|
|
||
| // start to create jobs | ||
| var pullSecrets []string | ||
| for _, s := range ds.Spec.Template.Spec.ImagePullSecrets { | ||
| pullSecrets = append(pullSecrets, s.Name) | ||
| } | ||
|
|
||
| selector := ds.Spec.Selector.DeepCopy() | ||
| selector.MatchExpressions = append(selector.MatchExpressions, metav1.LabelSelectorRequirement{ | ||
| Key: apps.ControllerRevisionHashLabelKey, | ||
| Operator: metav1.LabelSelectorOpNotIn, | ||
| Values: []string{updateRevision.Name, updateRevision.Labels[history.ControllerRevisionHashLabel]}, | ||
| }) | ||
|
|
||
| // As deamonset is the job's owner, we have the convention that all resources owned by deamonset | ||
| // have to match the selector of deamonset, such as pod, pvc and controllerrevision. | ||
| // So we had better put the labels into jobs. | ||
| labelMap := make(map[string]string) | ||
| for k, v := range ds.Spec.Template.Labels { | ||
| labelMap[k] = v | ||
| } | ||
| labelMap[history.ControllerRevisionHashLabel] = updateRevision.Labels[history.ControllerRevisionHashLabel] | ||
|
|
||
| containerImages := diffImagesBetweenRevisions(oldRevisions, updateRevision) | ||
| klog.V(3).Infof("DaemonSet %s/%s begin to create ImagePullJobs for revision %s: %v", | ||
| ds.Namespace, ds.Name, updateRevision.Name, containerImages) | ||
| for name, image := range containerImages { | ||
| // job name is revision name + container name, it can not be more than 255 characters | ||
| jobName := fmt.Sprintf("%s-%s", updateRevision.Name, name) | ||
| err := imagejobutilfunc.CreateJobForWorkload(r.Client, ds, clonesetutils.ControllerKind, jobName, image, labelMap, *selector, pullSecrets) | ||
| if err != nil { | ||
| if !errors.IsAlreadyExists(err) { | ||
| klog.Errorf("DaemonSet %s/%s failed to create ImagePullJob %s: %v", ds.Namespace, ds.Name, jobName, err) | ||
| r.eventRecorder.Eventf(ds, v1.EventTypeNormal, "FailedCreateImagePullJob", "failed to create ImagePullJob %s: %v", jobName, err) | ||
| } | ||
| continue | ||
| } | ||
| klog.V(3).Infof("DaemonSet %s/%s created ImagePullJob %s for image: %s", ds.Namespace, ds.Name, jobName, image) | ||
| r.eventRecorder.Eventf(ds, v1.EventTypeNormal, "CreatedImagePullJob", "created ImagePullJob %s for image: %s", jobName, image) | ||
| } | ||
|
|
||
| return r.patchControllerRevisionLabels(updateRevision, appsv1alpha1.ImagePreDownloadCreatedKey, "true") | ||
| } | ||
|
|
||
| func (r *ReconcileDaemonSet) patchControllerRevisionLabels(revision *apps.ControllerRevision, key, value string) error { | ||
| oldRevision := revision.ResourceVersion | ||
| body := fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`, key, value) | ||
| if err := r.Patch(context.TODO(), revision, client.RawPatch(types.StrategicMergePatchType, []byte(body))); err != nil { | ||
| return err | ||
| } | ||
| if oldRevision != revision.ResourceVersion { | ||
| clonesetutils.ResourceVersionExpectations.Expect(revision) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func diffImagesBetweenRevisions(oldRevisions []*apps.ControllerRevision, newRevision *apps.ControllerRevision) map[string]string { | ||
| var oldTemps []*v1.PodTemplateSpec | ||
| for _, oldRevision := range oldRevisions { | ||
| oldTemp, err := inplaceupdate.GetTemplateFromRevision(oldRevision) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| oldTemps = append(oldTemps, oldTemp) | ||
| } | ||
|
|
||
| newTemp, err := inplaceupdate.GetTemplateFromRevision(newRevision) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
|
|
||
| containerImages := make(map[string]string) | ||
| for i := range newTemp.Spec.Containers { | ||
| name := newTemp.Spec.Containers[i].Name | ||
| newImage := newTemp.Spec.Containers[i].Image | ||
|
|
||
| var found bool | ||
| for _, oldTemp := range oldTemps { | ||
| for j := range oldTemp.Spec.Containers { | ||
| if oldTemp.Spec.Containers[j].Name != name { | ||
| continue | ||
| } | ||
| if oldTemp.Spec.Containers[j].Image != newImage { | ||
| containerImages[name] = newImage | ||
| } | ||
| found = true | ||
| break | ||
| } | ||
| } | ||
| if !found { | ||
| containerImages[name] = newImage | ||
| } | ||
| } | ||
| return containerImages | ||
| } |
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