Nitin Goyal
2e8f513197
ExpandPVCIfRequired will expand PVC if and only if current PVC size is less than the desired PVC size. Signed-off-by: Nitin Goyal <nigoyal@redhat.com>
47 lines
1.9 KiB
Go
47 lines
1.9 KiB
Go
/*
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Copyright 2021 The Rook Authors. All rights reserved.
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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 k8sutil
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import (
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"context"
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v1 "k8s.io/api/core/v1"
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"sigs.k8s.io/controller-runtime/pkg/client"
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)
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// ExpandPVCIfRequired will expand the PVC if requested size is greater than the actual size of existing PVC
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func ExpandPVCIfRequired(client client.Client, desiredPVC *v1.PersistentVolumeClaim, currentPVC *v1.PersistentVolumeClaim) {
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desiredSize, desiredOK := desiredPVC.Spec.Resources.Requests[v1.ResourceStorage]
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currentSize, currentOK := currentPVC.Spec.Resources.Requests[v1.ResourceStorage]
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if !desiredOK || !currentOK {
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logger.Debugf("desired or current size are not specified for PVC %q", currentPVC.Name)
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return
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}
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if desiredSize.Value() > currentSize.Value() {
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currentPVC.Spec.Resources.Requests[v1.ResourceStorage] = desiredSize
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logger.Infof("updating PVC %q size from %s to %s", currentPVC.Name, currentSize.String(), desiredSize.String())
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if err := client.Update(context.TODO(), currentPVC); err != nil {
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// log the error, but don't fail the reconcile
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logger.Errorf("failed to update PVC size. %v", err)
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return
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}
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logger.Infof("successfully updated PVC %q size", currentPVC.Name)
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} else if desiredSize.Value() < currentSize.Value() {
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logger.Warningf("ignoring request to shrink PVC %q size from %s to %s, only expansion is allowed", currentPVC.Name, currentSize.String(), desiredSize.String())
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}
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}
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