mirror of https://github.com/k3s-io/k3s
104 lines
3.4 KiB
Go
104 lines
3.4 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package expand
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import (
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"time"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/klog"
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"k8s.io/kubernetes/pkg/controller/volume/expand/cache"
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"k8s.io/kubernetes/pkg/util/goroutinemap/exponentialbackoff"
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"k8s.io/kubernetes/pkg/volume/util"
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"k8s.io/kubernetes/pkg/volume/util/operationexecutor"
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)
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type SyncVolumeResize interface {
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Run(stopCh <-chan struct{})
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}
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type syncResize struct {
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loopPeriod time.Duration
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resizeMap cache.VolumeResizeMap
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opsExecutor operationexecutor.OperationExecutor
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kubeClient clientset.Interface
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}
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// NewSyncVolumeResize returns actual volume resize handler
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func NewSyncVolumeResize(
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loopPeriod time.Duration,
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opsExecutor operationexecutor.OperationExecutor,
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resizeMap cache.VolumeResizeMap,
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kubeClient clientset.Interface) SyncVolumeResize {
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rc := &syncResize{
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loopPeriod: loopPeriod,
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opsExecutor: opsExecutor,
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resizeMap: resizeMap,
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kubeClient: kubeClient,
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}
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return rc
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}
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func (rc *syncResize) Run(stopCh <-chan struct{}) {
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wait.Until(rc.Sync, rc.loopPeriod, stopCh)
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}
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func (rc *syncResize) Sync() {
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// Resize PVCs that require resize
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for _, pvcWithResizeRequest := range rc.resizeMap.GetPVCsWithResizeRequest() {
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uniqueVolumeKey := v1.UniqueVolumeName(pvcWithResizeRequest.UniquePVCKey())
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if rc.opsExecutor.IsOperationPending(uniqueVolumeKey, "") {
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klog.V(10).Infof("Operation for PVC %s is already pending", pvcWithResizeRequest.QualifiedName())
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continue
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}
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updatedClaim, err := markPVCResizeInProgress(pvcWithResizeRequest, rc.kubeClient)
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if err != nil {
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klog.V(5).Infof("Error setting PVC %s in progress with error : %v", pvcWithResizeRequest.QualifiedName(), err)
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continue
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}
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if updatedClaim != nil {
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pvcWithResizeRequest.PVC = updatedClaim
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}
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growFuncError := rc.opsExecutor.ExpandVolume(pvcWithResizeRequest, rc.resizeMap)
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if growFuncError != nil && !exponentialbackoff.IsExponentialBackoff(growFuncError) {
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klog.Errorf("Error growing pvc %s with %v", pvcWithResizeRequest.QualifiedName(), growFuncError)
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}
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if growFuncError == nil {
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klog.V(5).Infof("Started opsExecutor.ExpandVolume for volume %s", pvcWithResizeRequest.QualifiedName())
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}
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}
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}
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func markPVCResizeInProgress(pvcWithResizeRequest *cache.PVCWithResizeRequest, kubeClient clientset.Interface) (*v1.PersistentVolumeClaim, error) {
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// Mark PVC as Resize Started
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progressCondition := v1.PersistentVolumeClaimCondition{
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Type: v1.PersistentVolumeClaimResizing,
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Status: v1.ConditionTrue,
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LastTransitionTime: metav1.Now(),
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}
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conditions := []v1.PersistentVolumeClaimCondition{progressCondition}
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newPVC := pvcWithResizeRequest.PVC.DeepCopy()
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newPVC = util.MergeResizeConditionOnPVC(newPVC, conditions)
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return util.PatchPVCStatus(pvcWithResizeRequest.PVC /*oldPVC*/, newPVC, kubeClient)
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}
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