mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 06:40:23 +00:00
232 lines
8.2 KiB
Go
232 lines
8.2 KiB
Go
/*
|
|
Copyright 2019 The Kubernetes 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 plugins
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"strings"
|
|
|
|
v1 "k8s.io/api/core/v1"
|
|
storage "k8s.io/api/storage/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/klog"
|
|
)
|
|
|
|
const (
|
|
// AzureFileDriverName is the name of the CSI driver for Azure File
|
|
AzureFileDriverName = "file.csi.azure.com"
|
|
// AzureFileInTreePluginName is the name of the intree plugin for Azure file
|
|
AzureFileInTreePluginName = "kubernetes.io/azure-file"
|
|
|
|
separator = "#"
|
|
volumeIDTemplate = "%s#%s#%s#%s"
|
|
// Parameter names defined in azure file CSI driver, refer to
|
|
// https://github.com/kubernetes-sigs/azurefile-csi-driver/blob/master/docs/driver-parameters.md
|
|
azureFileShareName = "shareName"
|
|
|
|
secretNameTemplate = "azure-storage-account-%s-secret"
|
|
defaultSecretNamespace = "default"
|
|
)
|
|
|
|
var _ InTreePlugin = &azureFileCSITranslator{}
|
|
|
|
var secretNameFormatRE = regexp.MustCompile(`azure-storage-account-(.+)-secret`)
|
|
|
|
// azureFileCSITranslator handles translation of PV spec from In-tree
|
|
// Azure File to CSI Azure File and vice versa
|
|
type azureFileCSITranslator struct{}
|
|
|
|
// NewAzureFileCSITranslator returns a new instance of azureFileTranslator
|
|
func NewAzureFileCSITranslator() InTreePlugin {
|
|
return &azureFileCSITranslator{}
|
|
}
|
|
|
|
// TranslateInTreeStorageClassParametersToCSI translates InTree Azure File storage class parameters to CSI storage class
|
|
func (t *azureFileCSITranslator) TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error) {
|
|
return sc, nil
|
|
}
|
|
|
|
// TranslateInTreeInlineVolumeToCSI takes a Volume with AzureFile set from in-tree
|
|
// and converts the AzureFile source to a CSIPersistentVolumeSource
|
|
func (t *azureFileCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
|
|
if volume == nil || volume.AzureFile == nil {
|
|
return nil, fmt.Errorf("volume is nil or Azure File not defined on volume")
|
|
}
|
|
|
|
azureSource := volume.AzureFile
|
|
accountName, err := getStorageAccountName(azureSource.SecretName)
|
|
if err != nil {
|
|
klog.Warningf("getStorageAccountName(%s) returned with error: %v", azureSource.SecretName, err)
|
|
accountName = azureSource.SecretName
|
|
}
|
|
|
|
var (
|
|
pv = &v1.PersistentVolume{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
// Must be unique per disk as it is used as the unique part of the
|
|
// staging path
|
|
Name: fmt.Sprintf("%s-%s", AzureFileDriverName, azureSource.ShareName),
|
|
},
|
|
Spec: v1.PersistentVolumeSpec{
|
|
PersistentVolumeSource: v1.PersistentVolumeSource{
|
|
CSI: &v1.CSIPersistentVolumeSource{
|
|
Driver: AzureFileDriverName,
|
|
VolumeHandle: fmt.Sprintf(volumeIDTemplate, "", accountName, azureSource.ShareName, ""),
|
|
ReadOnly: azureSource.ReadOnly,
|
|
VolumeAttributes: map[string]string{azureFileShareName: azureSource.ShareName},
|
|
NodeStageSecretRef: &v1.SecretReference{
|
|
Name: azureSource.SecretName,
|
|
Namespace: defaultSecretNamespace,
|
|
},
|
|
},
|
|
},
|
|
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteMany},
|
|
},
|
|
}
|
|
)
|
|
|
|
return pv, nil
|
|
}
|
|
|
|
// TranslateInTreePVToCSI takes a PV with AzureFile set from in-tree
|
|
// and converts the AzureFile source to a CSIPersistentVolumeSource
|
|
func (t *azureFileCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
|
|
if pv == nil || pv.Spec.AzureFile == nil {
|
|
return nil, fmt.Errorf("pv is nil or Azure File source not defined on pv")
|
|
}
|
|
|
|
azureSource := pv.Spec.PersistentVolumeSource.AzureFile
|
|
accountName, err := getStorageAccountName(azureSource.SecretName)
|
|
if err != nil {
|
|
klog.Warningf("getStorageAccountName(%s) returned with error: %v", azureSource.SecretName, err)
|
|
accountName = azureSource.SecretName
|
|
}
|
|
volumeID := fmt.Sprintf(volumeIDTemplate, "", accountName, azureSource.ShareName, "")
|
|
|
|
var (
|
|
// refer to https://github.com/kubernetes-sigs/azurefile-csi-driver/blob/master/docs/driver-parameters.md
|
|
csiSource = &v1.CSIPersistentVolumeSource{
|
|
Driver: AzureFileDriverName,
|
|
NodeStageSecretRef: &v1.SecretReference{
|
|
Name: azureSource.SecretName,
|
|
Namespace: defaultSecretNamespace,
|
|
},
|
|
ReadOnly: azureSource.ReadOnly,
|
|
VolumeAttributes: map[string]string{azureFileShareName: azureSource.ShareName},
|
|
VolumeHandle: volumeID,
|
|
}
|
|
)
|
|
|
|
if azureSource.SecretNamespace != nil {
|
|
csiSource.NodeStageSecretRef.Namespace = *azureSource.SecretNamespace
|
|
}
|
|
|
|
pv.Spec.PersistentVolumeSource.AzureFile = nil
|
|
pv.Spec.PersistentVolumeSource.CSI = csiSource
|
|
|
|
return pv, nil
|
|
}
|
|
|
|
// TranslateCSIPVToInTree takes a PV with CSIPersistentVolumeSource set and
|
|
// translates the Azure File CSI source to a AzureFile source.
|
|
func (t *azureFileCSITranslator) TranslateCSIPVToInTree(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
|
|
if pv == nil || pv.Spec.CSI == nil {
|
|
return nil, fmt.Errorf("pv is nil or CSI source not defined on pv")
|
|
}
|
|
csiSource := pv.Spec.CSI
|
|
|
|
// refer to https://github.com/kubernetes-sigs/azurefile-csi-driver/blob/master/docs/driver-parameters.md
|
|
azureSource := &v1.AzureFilePersistentVolumeSource{
|
|
ReadOnly: csiSource.ReadOnly,
|
|
}
|
|
|
|
if csiSource.NodeStageSecretRef != nil && csiSource.NodeStageSecretRef.Name != "" {
|
|
azureSource.SecretName = csiSource.NodeStageSecretRef.Name
|
|
azureSource.SecretNamespace = &csiSource.NodeStageSecretRef.Namespace
|
|
if csiSource.VolumeAttributes != nil {
|
|
if shareName, ok := csiSource.VolumeAttributes[azureFileShareName]; ok {
|
|
azureSource.ShareName = shareName
|
|
}
|
|
}
|
|
} else {
|
|
_, storageAccount, fileShareName, _, err := getFileShareInfo(csiSource.VolumeHandle)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
azureSource.ShareName = fileShareName
|
|
azureSource.SecretName = fmt.Sprintf(secretNameTemplate, storageAccount)
|
|
}
|
|
|
|
pv.Spec.CSI = nil
|
|
pv.Spec.AzureFile = azureSource
|
|
|
|
return pv, nil
|
|
}
|
|
|
|
// CanSupport tests whether the plugin supports a given volume
|
|
// specification from the API. The spec pointer should be considered
|
|
// const.
|
|
func (t *azureFileCSITranslator) CanSupport(pv *v1.PersistentVolume) bool {
|
|
return pv != nil && pv.Spec.AzureFile != nil
|
|
}
|
|
|
|
// CanSupportInline tests whether the plugin supports a given inline volume
|
|
// specification from the API. The spec pointer should be considered
|
|
// const.
|
|
func (t *azureFileCSITranslator) CanSupportInline(volume *v1.Volume) bool {
|
|
return volume != nil && volume.AzureFile != nil
|
|
}
|
|
|
|
// GetInTreePluginName returns the name of the intree plugin driver
|
|
func (t *azureFileCSITranslator) GetInTreePluginName() string {
|
|
return AzureFileInTreePluginName
|
|
}
|
|
|
|
// GetCSIPluginName returns the name of the CSI plugin
|
|
func (t *azureFileCSITranslator) GetCSIPluginName() string {
|
|
return AzureFileDriverName
|
|
}
|
|
|
|
func (t *azureFileCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) {
|
|
return volumeHandle, nil
|
|
}
|
|
|
|
// get file share info according to volume id, e.g.
|
|
// input: "rg#f5713de20cde511e8ba4900#pvc-file-dynamic-17e43f84-f474-11e8-acd0-000d3a00df41#diskname.vhd"
|
|
// output: rg, f5713de20cde511e8ba4900, pvc-file-dynamic-17e43f84-f474-11e8-acd0-000d3a00df41, diskname.vhd
|
|
func getFileShareInfo(id string) (string, string, string, string, error) {
|
|
segments := strings.Split(id, separator)
|
|
if len(segments) < 3 {
|
|
return "", "", "", "", fmt.Errorf("error parsing volume id: %q, should at least contain two #", id)
|
|
}
|
|
var diskName string
|
|
if len(segments) > 3 {
|
|
diskName = segments[3]
|
|
}
|
|
return segments[0], segments[1], segments[2], diskName, nil
|
|
}
|
|
|
|
// get storage account name from secret name
|
|
func getStorageAccountName(secretName string) (string, error) {
|
|
matches := secretNameFormatRE.FindStringSubmatch(secretName)
|
|
if len(matches) != 2 {
|
|
return "", fmt.Errorf("could not get account name from %s, correct format: %s", secretName, secretNameFormatRE)
|
|
}
|
|
return matches[1], nil
|
|
}
|