112 lines
3.1 KiB
Go
112 lines
3.1 KiB
Go
/*
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Copyright 2019 The KubeSphere 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 storage
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import (
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"k8s.io/client-go/informers"
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"strconv"
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"k8s.io/api/core/v1"
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storageV1 "k8s.io/api/storage/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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"k8s.io/apimachinery/pkg/labels"
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)
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type ScMetrics struct {
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Capacity string `json:"capacity,omitempty"`
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Usage string `json:"usage,omitempty"`
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PvcNumber string `json:"pvcNumber"`
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}
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type PersistentVolumeClaimGetter interface {
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GetPersistentVolumeClaimByStorageClass(storageClassName string) ([]*v1.PersistentVolumeClaim, error)
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}
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type persistentVolumeClaimGetter struct {
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informers informers.SharedInformerFactory
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}
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func NewPersistentVolumeClaimGetter(informers informers.SharedInformerFactory) PersistentVolumeClaimGetter {
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return &persistentVolumeClaimGetter{informers: informers}
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}
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func (c *persistentVolumeClaimGetter) GetPersistentVolumeClaimByStorageClass(scName string) ([]*v1.PersistentVolumeClaim, error) {
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persistentVolumeClaimLister := c.informers.Core().V1().PersistentVolumeClaims().Lister()
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all, err := persistentVolumeClaimLister.List(labels.Everything())
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if err != nil {
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return nil, err
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}
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result := make([]*v1.PersistentVolumeClaim, 0)
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for _, item := range all {
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if item.Spec.StorageClassName != nil {
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if *item.Spec.StorageClassName == scName {
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result = append(result, item.DeepCopy())
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}
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} else if item.GetAnnotations()[v1.BetaStorageClassAnnotation] == scName {
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result = append(result, item.DeepCopy())
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}
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}
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return result, nil
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}
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// Get info of metrics
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func (c *persistentVolumeClaimGetter) GetScMetrics(scName string) (*ScMetrics, error) {
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persistentVolumeLister := c.informers.Core().V1().PersistentVolumes().Lister()
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pvList, err := persistentVolumeLister.List(labels.Everything())
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if err != nil {
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return nil, err
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}
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// Get PVC
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pvcList, err := c.GetPersistentVolumeClaimByStorageClass(scName)
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if err != nil {
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return nil, err
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}
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// Get storage usage
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// Gathering usage of a specific StorageClass
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var total resource.Quantity
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for _, volume := range pvList {
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if volume.Spec.StorageClassName != scName {
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continue
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}
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total.Add(volume.Spec.Capacity[v1.ResourceStorage])
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}
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usage := total.String()
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// Get PVC number
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pvcNum := len(pvcList)
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return &ScMetrics{Usage: usage, PvcNumber: strconv.Itoa(pvcNum)}, nil
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}
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// Get SC item list
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func (c *persistentVolumeClaimGetter) GetScList() ([]*storageV1.StorageClass, error) {
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// Get StorageClass list
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scList, err := c.informers.Storage().V1().StorageClasses().Lister().List(labels.Everything())
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if err != nil {
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return nil, err
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}
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return scList, nil
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}
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