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Signed-off-by: Aleksandr Zimin <alexandr.zimin@flant.com>
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94 changes: 94 additions & 0 deletions
94
images/sds-local-volume-scheduler-extender/src/pkg/scheduler/func.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| Copyright 2024 Flant JSC | ||
| 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 scheduler | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| storagev1 "k8s.io/api/storage/v1" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
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| "sds-local-volume-scheduler-extender/pkg/logger" | ||
| ) | ||
|
|
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| const ( | ||
| annotationBetaStorageProvisioner = "volume.beta.kubernetes.io/storage-provisioner" | ||
| annotationStorageProvisioner = "volume.kubernetes.io/storage-provisioner" | ||
| ) | ||
|
|
||
| func ShouldProcessPod(ctx context.Context, cl client.Client, log logger.Logger, pod *corev1.Pod, targetProvisioner string) (bool, error) { | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] targetProvisioner=%s, pod: %+v", targetProvisioner, pod)) | ||
| var discoveredProvisioner string | ||
|
|
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| for _, volume := range pod.Spec.Volumes { | ||
| if volume.PersistentVolumeClaim != nil { | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] process volume: %+v that has pvc: %+v", volume, volume.PersistentVolumeClaim)) | ||
| pvcName := volume.PersistentVolumeClaim.ClaimName | ||
| pvc := &corev1.PersistentVolumeClaim{} | ||
| err := cl.Get(ctx, client.ObjectKey{Namespace: pod.Namespace, Name: pvcName}, pvc) | ||
| if err != nil { | ||
| return false, fmt.Errorf("[ShouldProcessPod] error getting PVC %s: %v", pvcName, err) | ||
| } | ||
|
|
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| log.Trace(fmt.Sprintf("[ShouldProcessPod] get pvc: %+v", pvc)) | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] check provisioner in pvc annotations: %+v", pvc.Annotations)) | ||
| provisioner, ok := pvc.Annotations[annotationStorageProvisioner] | ||
| if !ok { | ||
| provisioner, ok = pvc.Annotations[annotationBetaStorageProvisioner] | ||
| } | ||
|
|
||
| if ok { | ||
| discoveredProvisioner = provisioner | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] discovered provisioner in pvc annotations: %s", discoveredProvisioner)) | ||
| } else if pvc.Spec.StorageClassName != nil && *pvc.Spec.StorageClassName != "" { | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] can't find provisioner in pvc annotations, check in storageClass with name: %s", *pvc.Spec.StorageClassName)) | ||
| storageClass := &storagev1.StorageClass{} | ||
| err := cl.Get(ctx, client.ObjectKey{Name: *pvc.Spec.StorageClassName}, storageClass) | ||
| if err != nil { | ||
| return false, fmt.Errorf("[ShouldProcessPod] error getting StorageClass %s: %v", *pvc.Spec.StorageClassName, err) | ||
| } | ||
|
|
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| discoveredProvisioner = storageClass.Provisioner | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] discover provisioner %s in storageClass: %+v", discoveredProvisioner, storageClass)) | ||
| } else if pvc.Spec.VolumeName != "" { | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] can't find provisioner in pvc annotations and StorageClass, check in PV with name: %s", pvc.Spec.VolumeName)) | ||
| pv := &corev1.PersistentVolume{} | ||
| err := cl.Get(ctx, client.ObjectKey{Name: pvc.Spec.VolumeName}, pv) | ||
| if err != nil { | ||
| return false, fmt.Errorf("[ShouldProcessPod] error getting PV %s: %v", pvc.Spec.VolumeName, err) | ||
| } | ||
|
|
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| if pv.Spec.CSI != nil { | ||
| discoveredProvisioner = pv.Spec.CSI.Driver | ||
| } | ||
|
|
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| log.Trace(fmt.Sprintf("[ShouldProcessPod] discover provisioner %s in PV: %+v", discoveredProvisioner, pv)) | ||
| } | ||
|
|
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| log.Trace(fmt.Sprintf("[ShouldProcessPod] discovered provisioner: %s", discoveredProvisioner)) | ||
| if discoveredProvisioner == targetProvisioner { | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] provisioner matches targetProvisioner %s. Pod: %s/%s", pod.Namespace, pod.Name, targetProvisioner)) | ||
| return true, nil | ||
| } | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] provisioner %s doesn't match targetProvisioner %s. Skip volume %s.", discoveredProvisioner, targetProvisioner, volume.Name)) | ||
| } | ||
| } | ||
| log.Trace(fmt.Sprintf("[ShouldProcessPod] can't find targetProvisioner %s in pod volumes. Skip pod: %s/%s", targetProvisioner, pod.Namespace, pod.Name)) | ||
| return false, nil | ||
| } |
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