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Update to kube v1.17

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Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
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Humble Chirammal
2020-01-14 16:08:55 +05:30
committed by mergify[bot]
parent 327fcd1b1b
commit 3af1e26d7c
1710 changed files with 289562 additions and 168638 deletions
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/*
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"
"net/url"
"regexp"
"strconv"
"strings"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
// AWSEBSDriverName is the name of the CSI driver for EBS
AWSEBSDriverName = "ebs.csi.aws.com"
// AWSEBSInTreePluginName is the name of the intree plugin for EBS
AWSEBSInTreePluginName = "kubernetes.io/aws-ebs"
// AWSEBSTopologyKey is the zonal topology key for AWS EBS CSI driver
AWSEBSTopologyKey = "topology." + AWSEBSDriverName + "/zone"
)
var _ InTreePlugin = &awsElasticBlockStoreCSITranslator{}
// awsElasticBlockStoreTranslator handles translation of PV spec from In-tree EBS to CSI EBS and vice versa
type awsElasticBlockStoreCSITranslator struct{}
// NewAWSElasticBlockStoreCSITranslator returns a new instance of awsElasticBlockStoreTranslator
func NewAWSElasticBlockStoreCSITranslator() InTreePlugin {
return &awsElasticBlockStoreCSITranslator{}
}
// TranslateInTreeStorageClassToCSI translates InTree EBS storage class parameters to CSI storage class
func (t *awsElasticBlockStoreCSITranslator) TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error) {
var (
generatedTopologies []v1.TopologySelectorTerm
params = map[string]string{}
)
for k, v := range sc.Parameters {
switch strings.ToLower(k) {
case fsTypeKey:
params[csiFsTypeKey] = v
case zoneKey:
generatedTopologies = generateToplogySelectors(AWSEBSTopologyKey, []string{v})
case zonesKey:
generatedTopologies = generateToplogySelectors(AWSEBSTopologyKey, strings.Split(v, ","))
default:
params[k] = v
}
}
if len(generatedTopologies) > 0 && len(sc.AllowedTopologies) > 0 {
return nil, fmt.Errorf("cannot simultaneously set allowed topologies and zone/zones parameters")
} else if len(generatedTopologies) > 0 {
sc.AllowedTopologies = generatedTopologies
} else if len(sc.AllowedTopologies) > 0 {
newTopologies, err := translateAllowedTopologies(sc.AllowedTopologies, AWSEBSTopologyKey)
if err != nil {
return nil, fmt.Errorf("failed translating allowed topologies: %v", err)
}
sc.AllowedTopologies = newTopologies
}
sc.Parameters = params
return sc, nil
}
// TranslateInTreeInlineVolumeToCSI takes a Volume with AWSElasticBlockStore set from in-tree
// and converts the AWSElasticBlockStore source to a CSIPersistentVolumeSource
func (t *awsElasticBlockStoreCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
if volume == nil || volume.AWSElasticBlockStore == nil {
return nil, fmt.Errorf("volume is nil or AWS EBS not defined on volume")
}
ebsSource := volume.AWSElasticBlockStore
volumeHandle, err := KubernetesVolumeIDToEBSVolumeID(ebsSource.VolumeID)
if err != nil {
return nil, fmt.Errorf("failed to translate Kubernetes ID to EBS Volume ID %v", err)
}
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", AWSEBSDriverName, ebsSource.VolumeID),
},
Spec: v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
CSI: &v1.CSIPersistentVolumeSource{
Driver: AWSEBSDriverName,
VolumeHandle: volumeHandle,
ReadOnly: ebsSource.ReadOnly,
FSType: ebsSource.FSType,
VolumeAttributes: map[string]string{
"partition": strconv.FormatInt(int64(ebsSource.Partition), 10),
},
},
},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
},
}
return pv, nil
}
// TranslateInTreePVToCSI takes a PV with AWSElasticBlockStore set from in-tree
// and converts the AWSElasticBlockStore source to a CSIPersistentVolumeSource
func (t *awsElasticBlockStoreCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
if pv == nil || pv.Spec.AWSElasticBlockStore == nil {
return nil, fmt.Errorf("pv is nil or AWS EBS not defined on pv")
}
ebsSource := pv.Spec.AWSElasticBlockStore
volumeHandle, err := KubernetesVolumeIDToEBSVolumeID(ebsSource.VolumeID)
if err != nil {
return nil, fmt.Errorf("failed to translate Kubernetes ID to EBS Volume ID %v", err)
}
csiSource := &v1.CSIPersistentVolumeSource{
Driver: AWSEBSDriverName,
VolumeHandle: volumeHandle,
ReadOnly: ebsSource.ReadOnly,
FSType: ebsSource.FSType,
VolumeAttributes: map[string]string{
"partition": strconv.FormatInt(int64(ebsSource.Partition), 10),
},
}
if err := translateTopology(pv, AWSEBSTopologyKey); err != nil {
return nil, fmt.Errorf("failed to translate topology: %v", err)
}
pv.Spec.AWSElasticBlockStore = nil
pv.Spec.CSI = csiSource
return pv, nil
}
// TranslateCSIPVToInTree takes a PV with CSIPersistentVolumeSource set and
// translates the EBS CSI source to a AWSElasticBlockStore source.
func (t *awsElasticBlockStoreCSITranslator) 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
ebsSource := &v1.AWSElasticBlockStoreVolumeSource{
VolumeID: csiSource.VolumeHandle,
FSType: csiSource.FSType,
ReadOnly: csiSource.ReadOnly,
}
if partition, ok := csiSource.VolumeAttributes["partition"]; ok {
partValue, err := strconv.Atoi(partition)
if err != nil {
return nil, fmt.Errorf("failed to convert partition %v to integer: %v", partition, err)
}
ebsSource.Partition = int32(partValue)
}
pv.Spec.CSI = nil
pv.Spec.AWSElasticBlockStore = ebsSource
return pv, nil
}
// CanSupport tests whether the plugin supports a given persistent volume
// specification from the API. The spec pointer should be considered
// const.
func (t *awsElasticBlockStoreCSITranslator) CanSupport(pv *v1.PersistentVolume) bool {
return pv != nil && pv.Spec.AWSElasticBlockStore != nil
}
// CanSupportInline tests whether the plugin supports a given inline volume
// specification from the API. The spec pointer should be considered
// const.
func (t *awsElasticBlockStoreCSITranslator) CanSupportInline(volume *v1.Volume) bool {
return volume != nil && volume.AWSElasticBlockStore != nil
}
// GetInTreePluginName returns the name of the intree plugin driver
func (t *awsElasticBlockStoreCSITranslator) GetInTreePluginName() string {
return AWSEBSInTreePluginName
}
// GetCSIPluginName returns the name of the CSI plugin
func (t *awsElasticBlockStoreCSITranslator) GetCSIPluginName() string {
return AWSEBSDriverName
}
func (t *awsElasticBlockStoreCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) {
return volumeHandle, nil
}
// awsVolumeRegMatch represents Regex Match for AWS volume.
var awsVolumeRegMatch = regexp.MustCompile("^vol-[^/]*$")
// KubernetesVolumeIDToEBSVolumeID translates Kubernetes volume ID to EBS volume ID
// KubernetsVolumeID forms:
// * aws://<zone>/<awsVolumeId>
// * aws:///<awsVolumeId>
// * <awsVolumeId>
// EBS Volume ID form:
// * vol-<alphanumberic>
// This translation shouldn't be needed and should be fixed in long run
// See https://github.com/kubernetes/kubernetes/issues/73730
func KubernetesVolumeIDToEBSVolumeID(kubernetesID string) (string, error) {
// name looks like aws://availability-zone/awsVolumeId
// The original idea of the URL-style name was to put the AZ into the
// host, so we could find the AZ immediately from the name without
// querying the API. But it turns out we don't actually need it for
// multi-AZ clusters, as we put the AZ into the labels on the PV instead.
// However, if in future we want to support multi-AZ cluster
// volume-awareness without using PersistentVolumes, we likely will
// want the AZ in the host.
if !strings.HasPrefix(kubernetesID, "aws://") {
// Assume a bare aws volume id (vol-1234...)
return kubernetesID, nil
}
url, err := url.Parse(kubernetesID)
if err != nil {
// TODO: Maybe we should pass a URL into the Volume functions
return "", fmt.Errorf("Invalid disk name (%s): %v", kubernetesID, err)
}
if url.Scheme != "aws" {
return "", fmt.Errorf("Invalid scheme for AWS volume (%s)", kubernetesID)
}
awsID := url.Path
awsID = strings.Trim(awsID, "/")
// We sanity check the resulting volume; the two known formats are
// vol-12345678 and vol-12345678abcdef01
if !awsVolumeRegMatch.MatchString(awsID) {
return "", fmt.Errorf("Invalid format for AWS volume (%s)", kubernetesID)
}
return awsID, nil
}

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/*
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"
)
const (
// AzureDiskDriverName is the name of the CSI driver for Azure Disk
AzureDiskDriverName = "disk.csi.azure.com"
// AzureDiskInTreePluginName is the name of the intree plugin for Azure Disk
AzureDiskInTreePluginName = "kubernetes.io/azure-disk"
// Parameter names defined in azure disk CSI driver, refer to
// https://github.com/kubernetes-sigs/azuredisk-csi-driver/blob/master/docs/driver-parameters.md
azureDiskKind = "kind"
azureDiskCachingMode = "cachingMode"
azureDiskFSType = "fsType"
)
var (
managedDiskPathRE = regexp.MustCompile(`.*/subscriptions/(?:.*)/resourceGroups/(?:.*)/providers/Microsoft.Compute/disks/(.+)`)
unmanagedDiskPathRE = regexp.MustCompile(`http(?:.*)://(?:.*)/vhds/(.+)`)
)
var _ InTreePlugin = &azureDiskCSITranslator{}
// azureDiskCSITranslator handles translation of PV spec from In-tree
// Azure Disk to CSI Azure Disk and vice versa
type azureDiskCSITranslator struct{}
// NewAzureDiskCSITranslator returns a new instance of azureDiskTranslator
func NewAzureDiskCSITranslator() InTreePlugin {
return &azureDiskCSITranslator{}
}
// TranslateInTreeStorageClassParametersToCSI translates InTree Azure Disk storage class parameters to CSI storage class
func (t *azureDiskCSITranslator) TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error) {
return sc, nil
}
// TranslateInTreeInlineVolumeToCSI takes a Volume with AzureDisk set from in-tree
// and converts the AzureDisk source to a CSIPersistentVolumeSource
func (t *azureDiskCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
if volume == nil || volume.AzureDisk == nil {
return nil, fmt.Errorf("volume is nil or Azure Disk not defined on volume")
}
azureSource := volume.AzureDisk
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", AzureDiskDriverName, azureSource.DiskName),
},
Spec: v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
CSI: &v1.CSIPersistentVolumeSource{
Driver: AzureDiskDriverName,
VolumeHandle: azureSource.DataDiskURI,
VolumeAttributes: map[string]string{azureDiskKind: "Managed"},
},
},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
},
}
if azureSource.ReadOnly != nil {
pv.Spec.PersistentVolumeSource.CSI.ReadOnly = *azureSource.ReadOnly
}
if azureSource.CachingMode != nil && *azureSource.CachingMode != "" {
pv.Spec.PersistentVolumeSource.CSI.VolumeAttributes[azureDiskCachingMode] = string(*azureSource.CachingMode)
}
if azureSource.FSType != nil {
pv.Spec.PersistentVolumeSource.CSI.FSType = *azureSource.FSType
pv.Spec.PersistentVolumeSource.CSI.VolumeAttributes[azureDiskFSType] = *azureSource.FSType
}
if azureSource.Kind != nil {
pv.Spec.PersistentVolumeSource.CSI.VolumeAttributes[azureDiskKind] = string(*azureSource.Kind)
}
return pv, nil
}
// TranslateInTreePVToCSI takes a PV with AzureDisk set from in-tree
// and converts the AzureDisk source to a CSIPersistentVolumeSource
func (t *azureDiskCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
if pv == nil || pv.Spec.AzureDisk == nil {
return nil, fmt.Errorf("pv is nil or Azure Disk source not defined on pv")
}
azureSource := pv.Spec.PersistentVolumeSource.AzureDisk
// refer to https://github.com/kubernetes-sigs/azuredisk-csi-driver/blob/master/docs/driver-parameters.md
csiSource := &v1.CSIPersistentVolumeSource{
Driver: AzureDiskDriverName,
VolumeHandle: azureSource.DataDiskURI,
ReadOnly: *azureSource.ReadOnly,
FSType: *azureSource.FSType,
VolumeAttributes: map[string]string{azureDiskKind: "Managed"},
}
if azureSource.CachingMode != nil {
csiSource.VolumeAttributes[azureDiskCachingMode] = string(*azureSource.CachingMode)
}
if azureSource.FSType != nil {
csiSource.VolumeAttributes[azureDiskFSType] = *azureSource.FSType
}
if azureSource.Kind != nil {
csiSource.VolumeAttributes[azureDiskKind] = string(*azureSource.Kind)
}
pv.Spec.PersistentVolumeSource.AzureDisk = nil
pv.Spec.PersistentVolumeSource.CSI = csiSource
pv.Spec.AccessModes = backwardCompatibleAccessModes(pv.Spec.AccessModes)
return pv, nil
}
// TranslateCSIPVToInTree takes a PV with CSIPersistentVolumeSource set and
// translates the Azure Disk CSI source to a AzureDisk source.
func (t *azureDiskCSITranslator) 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
diskURI := csiSource.VolumeHandle
diskName, err := getDiskName(diskURI)
if err != nil {
return nil, err
}
// refer to https://github.com/kubernetes-sigs/azuredisk-csi-driver/blob/master/docs/driver-parameters.md
managed := v1.AzureManagedDisk
azureSource := &v1.AzureDiskVolumeSource{
DiskName: diskName,
DataDiskURI: diskURI,
FSType: &csiSource.FSType,
ReadOnly: &csiSource.ReadOnly,
Kind: &managed,
}
if csiSource.VolumeAttributes != nil {
if cachingMode, ok := csiSource.VolumeAttributes[azureDiskCachingMode]; ok {
mode := v1.AzureDataDiskCachingMode(cachingMode)
azureSource.CachingMode = &mode
}
if fsType, ok := csiSource.VolumeAttributes[azureDiskFSType]; ok && fsType != "" {
azureSource.FSType = &fsType
}
if kind, ok := csiSource.VolumeAttributes[azureDiskKind]; ok && kind != "" {
diskKind := v1.AzureDataDiskKind(kind)
azureSource.Kind = &diskKind
}
}
pv.Spec.CSI = nil
pv.Spec.AzureDisk = 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 *azureDiskCSITranslator) CanSupport(pv *v1.PersistentVolume) bool {
return pv != nil && pv.Spec.AzureDisk != nil
}
// CanSupportInline tests whether the plugin supports a given inline volume
// specification from the API. The spec pointer should be considered
// const.
func (t *azureDiskCSITranslator) CanSupportInline(volume *v1.Volume) bool {
return volume != nil && volume.AzureDisk != nil
}
// GetInTreePluginName returns the name of the intree plugin driver
func (t *azureDiskCSITranslator) GetInTreePluginName() string {
return AzureDiskInTreePluginName
}
// GetCSIPluginName returns the name of the CSI plugin
func (t *azureDiskCSITranslator) GetCSIPluginName() string {
return AzureDiskDriverName
}
func (t *azureDiskCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) {
return volumeHandle, nil
}
func isManagedDisk(diskURI string) bool {
if len(diskURI) > 4 && strings.ToLower(diskURI[:4]) == "http" {
return false
}
return true
}
func getDiskName(diskURI string) (string, error) {
diskPathRE := managedDiskPathRE
if !isManagedDisk(diskURI) {
diskPathRE = unmanagedDiskPathRE
}
matches := diskPathRE.FindStringSubmatch(diskURI)
if len(matches) != 2 {
return "", fmt.Errorf("could not get disk name from %s, correct format: %s", diskURI, diskPathRE)
}
return matches[1], nil
}

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/*
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"
"strings"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
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"
// 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"
)
var _ InTreePlugin = &azureFileCSITranslator{}
// 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 AWS EBS not defined on volume")
}
azureSource := volume.AzureFile
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{
VolumeHandle: fmt.Sprintf(volumeIDTemplate, "", azureSource.SecretName, azureSource.ShareName),
ReadOnly: azureSource.ReadOnly,
VolumeAttributes: map[string]string{azureFileShareName: azureSource.ShareName},
NodePublishSecretRef: &v1.SecretReference{
Name: azureSource.ShareName,
Namespace: "default",
},
},
},
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
volumeID := fmt.Sprintf(volumeIDTemplate, "", azureSource.SecretName, azureSource.ShareName)
// refer to https://github.com/kubernetes-sigs/azurefile-csi-driver/blob/master/docs/driver-parameters.md
csiSource := &v1.CSIPersistentVolumeSource{
VolumeHandle: volumeID,
ReadOnly: azureSource.ReadOnly,
VolumeAttributes: map[string]string{azureFileShareName: azureSource.ShareName},
}
csiSource.NodePublishSecretRef = &v1.SecretReference{
Name: azureSource.ShareName,
Namespace: *azureSource.SecretNamespace,
}
pv.Spec.PersistentVolumeSource.AzureFile = nil
pv.Spec.PersistentVolumeSource.CSI = csiSource
pv.Spec.AccessModes = backwardCompatibleAccessModes(pv.Spec.AccessModes)
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.NodePublishSecretRef != nil && csiSource.NodePublishSecretRef.Name != "" {
azureSource.SecretName = csiSource.NodePublishSecretRef.Name
azureSource.SecretNamespace = &csiSource.NodePublishSecretRef.Namespace
if csiSource.VolumeAttributes != nil {
if shareName, ok := csiSource.VolumeAttributes[azureFileShareName]; ok {
azureSource.ShareName = shareName
}
}
} else {
_, _, fileShareName, err := getFileShareInfo(csiSource.VolumeHandle)
if err != nil {
return nil, err
}
azureSource.ShareName = fileShareName
// to-do: for dynamic provision scenario in CSI, it uses cluster's identity to get storage account key
// secret for the file share is not created, we may create a serect here
}
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"
// output: rg, f5713de20cde511e8ba4900, pvc-file-dynamic-17e43f84-f474-11e8-acd0-000d3a00df41
func getFileShareInfo(id 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)
}
return segments[0], segments[1], segments[2], nil
}

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/*
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"
"strconv"
"strings"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
cloudvolume "k8s.io/cloud-provider/volume"
)
const (
// GCEPDDriverName is the name of the CSI driver for GCE PD
GCEPDDriverName = "pd.csi.storage.gke.io"
// GCEPDInTreePluginName is the name of the intree plugin for GCE PD
GCEPDInTreePluginName = "kubernetes.io/gce-pd"
// GCEPDTopologyKey is the zonal topology key for GCE PD CSI Driver
GCEPDTopologyKey = "topology.gke.io/zone"
// Volume ID Expected Format
// "projects/{projectName}/zones/{zoneName}/disks/{diskName}"
volIDZonalFmt = "projects/%s/zones/%s/disks/%s"
// "projects/{projectName}/regions/{regionName}/disks/{diskName}"
volIDRegionalFmt = "projects/%s/regions/%s/disks/%s"
volIDProjectValue = 1
volIDRegionalityValue = 2
volIDZoneValue = 3
volIDDiskNameValue = 5
volIDTotalElements = 6
nodeIDFmt = "projects/%s/zones/%s/instances/%s"
// UnspecifiedValue is used for an unknown zone string
UnspecifiedValue = "UNSPECIFIED"
)
var _ InTreePlugin = &gcePersistentDiskCSITranslator{}
// gcePersistentDiskCSITranslator handles translation of PV spec from In-tree
// GCE PD to CSI GCE PD and vice versa
type gcePersistentDiskCSITranslator struct{}
// NewGCEPersistentDiskCSITranslator returns a new instance of gcePersistentDiskTranslator
func NewGCEPersistentDiskCSITranslator() InTreePlugin {
return &gcePersistentDiskCSITranslator{}
}
func generateToplogySelectors(key string, values []string) []v1.TopologySelectorTerm {
return []v1.TopologySelectorTerm{
{
MatchLabelExpressions: []v1.TopologySelectorLabelRequirement{
{
Key: key,
Values: values,
},
},
},
}
}
// TranslateInTreeStorageClassParametersToCSI translates InTree GCE storage class parameters to CSI storage class
func (g *gcePersistentDiskCSITranslator) TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error) {
var generatedTopologies []v1.TopologySelectorTerm
np := map[string]string{}
for k, v := range sc.Parameters {
switch strings.ToLower(k) {
case fsTypeKey:
// prefixed fstype parameter is stripped out by external provisioner
np[csiFsTypeKey] = v
// Strip out zone and zones parameters and translate them into topologies instead
case zoneKey:
generatedTopologies = generateToplogySelectors(GCEPDTopologyKey, []string{v})
case zonesKey:
generatedTopologies = generateToplogySelectors(GCEPDTopologyKey, strings.Split(v, ","))
default:
np[k] = v
}
}
if len(generatedTopologies) > 0 && len(sc.AllowedTopologies) > 0 {
return nil, fmt.Errorf("cannot simultaneously set allowed topologies and zone/zones parameters")
} else if len(generatedTopologies) > 0 {
sc.AllowedTopologies = generatedTopologies
} else if len(sc.AllowedTopologies) > 0 {
newTopologies, err := translateAllowedTopologies(sc.AllowedTopologies, GCEPDTopologyKey)
if err != nil {
return nil, fmt.Errorf("failed translating allowed topologies: %v", err)
}
sc.AllowedTopologies = newTopologies
}
sc.Parameters = np
return sc, nil
}
// backwardCompatibleAccessModes translates all instances of ReadWriteMany
// access mode from the in-tree plugin to ReadWriteOnce. This is because in-tree
// plugin never supported ReadWriteMany but also did not validate or enforce
// this access mode for pre-provisioned volumes. The GCE PD CSI Driver validates
// and enforces (fails) ReadWriteMany. Therefore we treat all in-tree
// ReadWriteMany as ReadWriteOnce volumes to not break legacy volumes. It also
// takes [ReadWriteOnce, ReadOnlyMany] and makes it ReadWriteOnce. This is
// because the in-tree plugin does not enforce access modes and just attaches
// the disk in ReadWriteOnce mode; however, the CSI external-attacher will fail
// this combination because technically [ReadWriteOnce, ReadOnlyMany] is not
// supportable on an attached volume
// See: https://github.com/kubernetes-csi/external-attacher/issues/153
func backwardCompatibleAccessModes(ams []v1.PersistentVolumeAccessMode) []v1.PersistentVolumeAccessMode {
if ams == nil {
return nil
}
s := map[v1.PersistentVolumeAccessMode]bool{}
var newAM []v1.PersistentVolumeAccessMode
for _, am := range ams {
if am == v1.ReadWriteMany {
// ReadWriteMany is unsupported in CSI, but in-tree did no
// validation and treated it as ReadWriteOnce
s[v1.ReadWriteOnce] = true
} else {
s[am] = true
}
}
switch {
case s[v1.ReadOnlyMany] && s[v1.ReadWriteOnce]:
// ROX,RWO is unsupported in CSI, but in-tree did not validation and
// treated it as ReadWriteOnce
newAM = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
case s[v1.ReadWriteOnce]:
newAM = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
case s[v1.ReadOnlyMany]:
newAM = []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany}
default:
newAM = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
}
return newAM
}
// TranslateInTreeInlineVolumeToCSI takes a Volume with GCEPersistentDisk set from in-tree
// and converts the GCEPersistentDisk source to a CSIPersistentVolumeSource
func (g *gcePersistentDiskCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
if volume == nil || volume.GCEPersistentDisk == nil {
return nil, fmt.Errorf("volume is nil or GCE PD not defined on volume")
}
pdSource := volume.GCEPersistentDisk
partition := ""
if pdSource.Partition != 0 {
partition = strconv.Itoa(int(pdSource.Partition))
}
var am v1.PersistentVolumeAccessMode
if pdSource.ReadOnly {
am = v1.ReadOnlyMany
} else {
am = v1.ReadWriteOnce
}
fsMode := v1.PersistentVolumeFilesystem
return &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", GCEPDDriverName, pdSource.PDName),
},
Spec: v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
CSI: &v1.CSIPersistentVolumeSource{
Driver: GCEPDDriverName,
VolumeHandle: fmt.Sprintf(volIDZonalFmt, UnspecifiedValue, UnspecifiedValue, pdSource.PDName),
ReadOnly: pdSource.ReadOnly,
FSType: pdSource.FSType,
VolumeAttributes: map[string]string{
"partition": partition,
},
},
},
AccessModes: []v1.PersistentVolumeAccessMode{am},
VolumeMode: &fsMode,
},
}, nil
}
// TranslateInTreePVToCSI takes a PV with GCEPersistentDisk set from in-tree
// and converts the GCEPersistentDisk source to a CSIPersistentVolumeSource
func (g *gcePersistentDiskCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
var volID string
if pv == nil || pv.Spec.GCEPersistentDisk == nil {
return nil, fmt.Errorf("pv is nil or GCE Persistent Disk source not defined on pv")
}
zonesLabel := pv.Labels[v1.LabelZoneFailureDomain]
zones := strings.Split(zonesLabel, cloudvolume.LabelMultiZoneDelimiter)
if len(zones) == 1 && len(zones[0]) != 0 {
// Zonal
volID = fmt.Sprintf(volIDZonalFmt, UnspecifiedValue, zones[0], pv.Spec.GCEPersistentDisk.PDName)
} else if len(zones) > 1 {
// Regional
region, err := getRegionFromZones(zones)
if err != nil {
return nil, fmt.Errorf("failed to get region from zones: %v", err)
}
volID = fmt.Sprintf(volIDZonalFmt, UnspecifiedValue, region, pv.Spec.GCEPersistentDisk.PDName)
} else {
// Unspecified
volID = fmt.Sprintf(volIDZonalFmt, UnspecifiedValue, UnspecifiedValue, pv.Spec.GCEPersistentDisk.PDName)
}
gceSource := pv.Spec.PersistentVolumeSource.GCEPersistentDisk
partition := ""
if gceSource.Partition != 0 {
partition = strconv.Itoa(int(gceSource.Partition))
}
csiSource := &v1.CSIPersistentVolumeSource{
Driver: GCEPDDriverName,
VolumeHandle: volID,
ReadOnly: gceSource.ReadOnly,
FSType: gceSource.FSType,
VolumeAttributes: map[string]string{
"partition": partition,
},
}
if err := translateTopology(pv, GCEPDTopologyKey); err != nil {
return nil, fmt.Errorf("failed to translate topology: %v", err)
}
pv.Spec.PersistentVolumeSource.GCEPersistentDisk = nil
pv.Spec.PersistentVolumeSource.CSI = csiSource
pv.Spec.AccessModes = backwardCompatibleAccessModes(pv.Spec.AccessModes)
return pv, nil
}
// TranslateCSIPVToInTree takes a PV with CSIPersistentVolumeSource set and
// translates the GCE PD CSI source to a GCEPersistentDisk source.
func (g *gcePersistentDiskCSITranslator) 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
pdName, err := pdNameFromVolumeID(csiSource.VolumeHandle)
if err != nil {
return nil, err
}
gceSource := &v1.GCEPersistentDiskVolumeSource{
PDName: pdName,
FSType: csiSource.FSType,
ReadOnly: csiSource.ReadOnly,
}
if partition, ok := csiSource.VolumeAttributes["partition"]; ok && partition != "" {
partInt, err := strconv.Atoi(partition)
if err != nil {
return nil, fmt.Errorf("Failed to convert partition %v to integer: %v", partition, err)
}
gceSource.Partition = int32(partInt)
}
// TODO: Take the zone/regional information and stick it into the label.
pv.Spec.CSI = nil
pv.Spec.GCEPersistentDisk = gceSource
return pv, nil
}
// CanSupport tests whether the plugin supports a given persistent volume
// specification from the API. The spec pointer should be considered
// const.
func (g *gcePersistentDiskCSITranslator) CanSupport(pv *v1.PersistentVolume) bool {
return pv != nil && pv.Spec.GCEPersistentDisk != nil
}
// CanSupportInline tests whether the plugin supports a given inline volume
// specification from the API. The spec pointer should be considered
// const.
func (g *gcePersistentDiskCSITranslator) CanSupportInline(volume *v1.Volume) bool {
return volume != nil && volume.GCEPersistentDisk != nil
}
// GetInTreePluginName returns the name of the intree plugin driver
func (g *gcePersistentDiskCSITranslator) GetInTreePluginName() string {
return GCEPDInTreePluginName
}
// GetCSIPluginName returns the name of the CSI plugin
func (g *gcePersistentDiskCSITranslator) GetCSIPluginName() string {
return GCEPDDriverName
}
// RepairVolumeHandle returns a fully specified volume handle by inferring
// project, zone/region from the node ID if the volume handle has UNSPECIFIED
// sections
func (g *gcePersistentDiskCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) {
var err error
tok := strings.Split(volumeHandle, "/")
if len(tok) < volIDTotalElements {
return "", fmt.Errorf("volume handle has wrong number of elements; got %v, wanted %v or more", len(tok), volIDTotalElements)
}
if tok[volIDProjectValue] != UnspecifiedValue {
return volumeHandle, nil
}
nodeTok := strings.Split(nodeID, "/")
if len(nodeTok) < volIDTotalElements {
return "", fmt.Errorf("node handle has wrong number of elements; got %v, wanted %v or more", len(nodeTok), volIDTotalElements)
}
switch tok[volIDRegionalityValue] {
case "zones":
zone := ""
if tok[volIDZoneValue] == UnspecifiedValue {
zone = nodeTok[volIDZoneValue]
} else {
zone = tok[volIDZoneValue]
}
return fmt.Sprintf(volIDZonalFmt, nodeTok[volIDProjectValue], zone, tok[volIDDiskNameValue]), nil
case "regions":
region := ""
if tok[volIDZoneValue] == UnspecifiedValue {
region, err = getRegionFromZones([]string{nodeTok[volIDZoneValue]})
if err != nil {
return "", fmt.Errorf("failed to get region from zone %s: %v", nodeTok[volIDZoneValue], err)
}
} else {
region = tok[volIDZoneValue]
}
return fmt.Sprintf(volIDRegionalFmt, nodeTok[volIDProjectValue], region, tok[volIDDiskNameValue]), nil
default:
return "", fmt.Errorf("expected volume handle to have zones or regions regionality value, got: %s", tok[volIDRegionalityValue])
}
}
func pdNameFromVolumeID(id string) (string, error) {
splitID := strings.Split(id, "/")
if len(splitID) < volIDTotalElements {
return "", fmt.Errorf("failed to get id components.Got: %v, wanted %v components or more. ", len(splitID), volIDTotalElements)
}
return splitID[volIDDiskNameValue], nil
}
// TODO: Replace this with the imported one from GCE PD CSI Driver when
// the driver removes all k8s/k8s dependencies
func getRegionFromZones(zones []string) (string, error) {
regions := sets.String{}
if len(zones) < 1 {
return "", fmt.Errorf("no zones specified")
}
for _, zone := range zones {
// Zone expected format {locale}-{region}-{zone}
splitZone := strings.Split(zone, "-")
if len(splitZone) != 3 {
return "", fmt.Errorf("zone in unexpected format, expected: {locale}-{region}-{zone}, got: %v", zone)
}
regions.Insert(strings.Join(splitZone[0:2], "-"))
}
if regions.Len() != 1 {
return "", fmt.Errorf("multiple or no regions gotten from zones, got: %v", regions)
}
return regions.UnsortedList()[0], nil
}

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/*
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 (
"errors"
"fmt"
"strings"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/util/sets"
cloudvolume "k8s.io/cloud-provider/volume"
)
// InTreePlugin handles translations between CSI and in-tree sources in a PV
type InTreePlugin interface {
// TranslateInTreeStorageClassToCSI takes in-tree volume options
// and translates them to a volume options consumable by CSI plugin
TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error)
// TranslateInTreeInlineVolumeToCSI takes a inline volume and will translate
// the in-tree inline volume source to a CSIPersistentVolumeSource
// A PV object containing the CSIPersistentVolumeSource in it's spec is returned
TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error)
// TranslateInTreePVToCSI takes a persistent volume and will translate
// the in-tree pv source to a CSI Source. The input persistent volume can be modified
TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error)
// TranslateCSIPVToInTree takes a PV with a CSI PersistentVolume Source and will translate
// it to a in-tree Persistent Volume Source for the in-tree volume
// by the `Driver` field in the CSI Source. The input PV object can be modified
TranslateCSIPVToInTree(pv *v1.PersistentVolume) (*v1.PersistentVolume, error)
// CanSupport tests whether the plugin supports a given persistent volume
// specification from the API.
CanSupport(pv *v1.PersistentVolume) bool
// CanSupportInline tests whether the plugin supports a given inline volume
// specification from the API.
CanSupportInline(vol *v1.Volume) bool
// GetInTreePluginName returns the in-tree plugin name this migrates
GetInTreePluginName() string
// GetCSIPluginName returns the name of the CSI plugin that supersedes the in-tree plugin
GetCSIPluginName() string
// RepairVolumeHandle generates a correct volume handle based on node ID information.
RepairVolumeHandle(volumeHandle, nodeID string) (string, error)
}
const (
// fsTypeKey is the deprecated storage class parameter key for fstype
fsTypeKey = "fstype"
// csiFsTypeKey is the storage class parameter key for CSI fstype
csiFsTypeKey = "csi.storage.k8s.io/fstype"
// zoneKey is the deprecated storage class parameter key for zone
zoneKey = "zone"
// zonesKey is the deprecated storage class parameter key for zones
zonesKey = "zones"
)
// replaceTopology overwrites an existing topology key by a new one.
func replaceTopology(pv *v1.PersistentVolume, oldKey, newKey string) error {
for i := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms {
for j, r := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms[i].MatchExpressions {
if r.Key == oldKey {
pv.Spec.NodeAffinity.Required.NodeSelectorTerms[i].MatchExpressions[j].Key = newKey
}
}
}
return nil
}
// getTopologyZones returns all topology zones with the given key found in the PV.
func getTopologyZones(pv *v1.PersistentVolume, key string) []string {
if pv.Spec.NodeAffinity == nil ||
pv.Spec.NodeAffinity.Required == nil ||
len(pv.Spec.NodeAffinity.Required.NodeSelectorTerms) < 1 {
return nil
}
var values []string
for i := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms {
for _, r := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms[i].MatchExpressions {
if r.Key == key {
values = append(values, r.Values...)
}
}
}
return values
}
// addTopology appends the topology to the given PV.
func addTopology(pv *v1.PersistentVolume, topologyKey string, zones []string) error {
// Make sure there are no duplicate or empty strings
filteredZones := sets.String{}
for i := range zones {
zone := strings.TrimSpace(zones[i])
if len(zone) > 0 {
filteredZones.Insert(zone)
}
}
zones = filteredZones.UnsortedList()
if len(zones) < 1 {
return errors.New("there are no valid zones to add to pv")
}
// Make sure the necessary fields exist
pv.Spec.NodeAffinity = new(v1.VolumeNodeAffinity)
pv.Spec.NodeAffinity.Required = new(v1.NodeSelector)
pv.Spec.NodeAffinity.Required.NodeSelectorTerms = make([]v1.NodeSelectorTerm, 1)
topology := v1.NodeSelectorRequirement{
Key: topologyKey,
Operator: v1.NodeSelectorOpIn,
Values: zones,
}
pv.Spec.NodeAffinity.Required.NodeSelectorTerms[0].MatchExpressions = append(
pv.Spec.NodeAffinity.Required.NodeSelectorTerms[0].MatchExpressions,
topology,
)
return nil
}
// translateTopology converts existing zone labels or in-tree topology to CSI topology.
// In-tree topology has precedence over zone labels.
func translateTopology(pv *v1.PersistentVolume, topologyKey string) error {
// If topology is already set, assume the content is accurate
if len(getTopologyZones(pv, topologyKey)) > 0 {
return nil
}
zones := getTopologyZones(pv, v1.LabelZoneFailureDomain)
if len(zones) > 0 {
return replaceTopology(pv, v1.LabelZoneFailureDomain, topologyKey)
}
if label, ok := pv.Labels[v1.LabelZoneFailureDomain]; ok {
zones = strings.Split(label, cloudvolume.LabelMultiZoneDelimiter)
if len(zones) > 0 {
return addTopology(pv, topologyKey, zones)
}
}
return nil
}
// translateAllowedTopologies translates allowed topologies within storage class
// from legacy failure domain to given CSI topology key
func translateAllowedTopologies(terms []v1.TopologySelectorTerm, key string) ([]v1.TopologySelectorTerm, error) {
if terms == nil {
return nil, nil
}
newTopologies := []v1.TopologySelectorTerm{}
for _, term := range terms {
newTerm := v1.TopologySelectorTerm{}
for _, exp := range term.MatchLabelExpressions {
var newExp v1.TopologySelectorLabelRequirement
if exp.Key == v1.LabelZoneFailureDomain {
newExp = v1.TopologySelectorLabelRequirement{
Key: key,
Values: exp.Values,
}
} else if exp.Key == key {
newExp = exp
} else {
return nil, fmt.Errorf("unknown topology key: %v", exp.Key)
}
newTerm.MatchLabelExpressions = append(newTerm.MatchLabelExpressions, newExp)
}
newTopologies = append(newTopologies, newTerm)
}
return newTopologies, nil
}

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/*
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"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
// CinderDriverName is the name of the CSI driver for Cinder
CinderDriverName = "cinder.csi.openstack.org"
// CinderTopologyKey is the zonal topology key for Cinder CSI Driver
CinderTopologyKey = "topology.cinder.csi.openstack.org/zone"
// CinderInTreePluginName is the name of the intree plugin for Cinder
CinderInTreePluginName = "kubernetes.io/cinder"
)
var _ InTreePlugin = (*osCinderCSITranslator)(nil)
// osCinderCSITranslator handles translation of PV spec from In-tree Cinder to CSI Cinder and vice versa
type osCinderCSITranslator struct{}
// NewOpenStackCinderCSITranslator returns a new instance of osCinderCSITranslator
func NewOpenStackCinderCSITranslator() InTreePlugin {
return &osCinderCSITranslator{}
}
// TranslateInTreeStorageClassParametersToCSI translates InTree Cinder storage class parameters to CSI storage class
func (t *osCinderCSITranslator) TranslateInTreeStorageClassToCSI(sc *storage.StorageClass) (*storage.StorageClass, error) {
return sc, nil
}
// TranslateInTreeInlineVolumeToCSI takes a Volume with Cinder set from in-tree
// and converts the Cinder source to a CSIPersistentVolumeSource
func (t *osCinderCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
if volume == nil || volume.Cinder == nil {
return nil, fmt.Errorf("volume is nil or Cinder not defined on volume")
}
cinderSource := volume.Cinder
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", CinderDriverName, cinderSource.VolumeID),
},
Spec: v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
CSI: &v1.CSIPersistentVolumeSource{
Driver: CinderDriverName,
VolumeHandle: cinderSource.VolumeID,
ReadOnly: cinderSource.ReadOnly,
FSType: cinderSource.FSType,
VolumeAttributes: map[string]string{},
},
},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
},
}
return pv, nil
}
// TranslateInTreePVToCSI takes a PV with Cinder set from in-tree
// and converts the Cinder source to a CSIPersistentVolumeSource
func (t *osCinderCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
if pv == nil || pv.Spec.Cinder == nil {
return nil, fmt.Errorf("pv is nil or Cinder not defined on pv")
}
cinderSource := pv.Spec.Cinder
csiSource := &v1.CSIPersistentVolumeSource{
Driver: CinderDriverName,
VolumeHandle: cinderSource.VolumeID,
ReadOnly: cinderSource.ReadOnly,
FSType: cinderSource.FSType,
VolumeAttributes: map[string]string{},
}
if err := translateTopology(pv, CinderTopologyKey); err != nil {
return nil, fmt.Errorf("failed to translate topology: %v", err)
}
pv.Spec.Cinder = nil
pv.Spec.CSI = csiSource
return pv, nil
}
// TranslateCSIPVToInTree takes a PV with CSIPersistentVolumeSource set and
// translates the Cinder CSI source to a Cinder In-tree source.
func (t *osCinderCSITranslator) 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
cinderSource := &v1.CinderPersistentVolumeSource{
VolumeID: csiSource.VolumeHandle,
FSType: csiSource.FSType,
ReadOnly: csiSource.ReadOnly,
}
pv.Spec.CSI = nil
pv.Spec.Cinder = cinderSource
return pv, nil
}
// CanSupport tests whether the plugin supports a given persistent volume
// specification from the API. The spec pointer should be considered
// const.
func (t *osCinderCSITranslator) CanSupport(pv *v1.PersistentVolume) bool {
return pv != nil && pv.Spec.Cinder != nil
}
// CanSupportInline tests whether the plugin supports a given inline volume
// specification from the API. The spec pointer should be considered
// const.
func (t *osCinderCSITranslator) CanSupportInline(volume *v1.Volume) bool {
return volume != nil && volume.Cinder != nil
}
// GetInTreePluginName returns the name of the intree plugin driver
func (t *osCinderCSITranslator) GetInTreePluginName() string {
return CinderInTreePluginName
}
// GetCSIPluginName returns the name of the CSI plugin
func (t *osCinderCSITranslator) GetCSIPluginName() string {
return CinderDriverName
}
func (t *osCinderCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) {
return volumeHandle, nil
}

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/*
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 csitranslation
import (
"errors"
"fmt"
v1 "k8s.io/api/core/v1"
storage "k8s.io/api/storage/v1"
"k8s.io/csi-translation-lib/plugins"
)
var (
inTreePlugins = map[string]plugins.InTreePlugin{
plugins.GCEPDDriverName: plugins.NewGCEPersistentDiskCSITranslator(),
plugins.AWSEBSDriverName: plugins.NewAWSElasticBlockStoreCSITranslator(),
plugins.CinderDriverName: plugins.NewOpenStackCinderCSITranslator(),
plugins.AzureDiskDriverName: plugins.NewAzureDiskCSITranslator(),
plugins.AzureFileDriverName: plugins.NewAzureFileCSITranslator(),
}
)
// CSITranslator translates in-tree storage API objects to their equivalent CSI
// API objects. It also provides many helper functions to determine whether
// translation logic exists and the mappings between "in-tree plugin <-> csi driver"
type CSITranslator struct{}
// New creates a new CSITranslator which does real translation
// for "in-tree plugins <-> csi drivers"
func New() CSITranslator {
return CSITranslator{}
}
// TranslateInTreeStorageClassToCSI takes in-tree Storage Class
// and translates it to a set of parameters consumable by CSI plugin
func (CSITranslator) TranslateInTreeStorageClassToCSI(inTreePluginName string, sc *storage.StorageClass) (*storage.StorageClass, error) {
newSC := sc.DeepCopy()
for _, curPlugin := range inTreePlugins {
if inTreePluginName == curPlugin.GetInTreePluginName() {
return curPlugin.TranslateInTreeStorageClassToCSI(newSC)
}
}
return nil, fmt.Errorf("could not find in-tree storage class parameter translation logic for %#v", inTreePluginName)
}
// TranslateInTreeInlineVolumeToCSI takes a inline volume and will translate
// the in-tree volume source to a CSIPersistentVolumeSource (wrapped in a PV)
// if the translation logic has been implemented.
func (CSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume) (*v1.PersistentVolume, error) {
if volume == nil {
return nil, fmt.Errorf("persistent volume was nil")
}
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupportInline(volume) {
pv, err := curPlugin.TranslateInTreeInlineVolumeToCSI(volume)
if err != nil {
return nil, err
}
// Inline volumes only support PersistentVolumeFilesystem (and not block).
// If VolumeMode has not been set explicitly by plugin-specific
// translator, set it to Filesystem here.
// This is only necessary for inline volumes as the default PV
// initialization that populates VolumeMode does not apply to inline volumes.
if pv.Spec.VolumeMode == nil {
volumeMode := v1.PersistentVolumeFilesystem
pv.Spec.VolumeMode = &volumeMode
}
return pv, nil
}
}
return nil, fmt.Errorf("could not find in-tree plugin translation logic for %#v", volume.Name)
}
// TranslateInTreePVToCSI takes a persistent volume and will translate
// the in-tree source to a CSI Source if the translation logic
// has been implemented. The input persistent volume will not
// be modified
func (CSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
if pv == nil {
return nil, errors.New("persistent volume was nil")
}
copiedPV := pv.DeepCopy()
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupport(copiedPV) {
return curPlugin.TranslateInTreePVToCSI(copiedPV)
}
}
return nil, fmt.Errorf("could not find in-tree plugin translation logic for %#v", copiedPV.Name)
}
// TranslateCSIPVToInTree takes a PV with a CSI PersistentVolume Source and will translate
// it to a in-tree Persistent Volume Source for the specific in-tree volume specified
// by the `Driver` field in the CSI Source. The input PV object will not be modified.
func (CSITranslator) TranslateCSIPVToInTree(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) {
if pv == nil || pv.Spec.CSI == nil {
return nil, errors.New("CSI persistent volume was nil")
}
copiedPV := pv.DeepCopy()
for driverName, curPlugin := range inTreePlugins {
if copiedPV.Spec.CSI.Driver == driverName {
return curPlugin.TranslateCSIPVToInTree(copiedPV)
}
}
return nil, fmt.Errorf("could not find in-tree plugin translation logic for %s", copiedPV.Spec.CSI.Driver)
}
// IsMigratableIntreePluginByName tests whether there is migration logic for the in-tree plugin
// whose name matches the given name
func (CSITranslator) IsMigratableIntreePluginByName(inTreePluginName string) bool {
for _, curPlugin := range inTreePlugins {
if curPlugin.GetInTreePluginName() == inTreePluginName {
return true
}
}
return false
}
// IsMigratedCSIDriverByName tests whether there exists an in-tree plugin with logic
// to migrate to the CSI driver with given name
func (CSITranslator) IsMigratedCSIDriverByName(csiPluginName string) bool {
if _, ok := inTreePlugins[csiPluginName]; ok {
return true
}
return false
}
// GetInTreePluginNameFromSpec returns the plugin name
func (CSITranslator) GetInTreePluginNameFromSpec(pv *v1.PersistentVolume, vol *v1.Volume) (string, error) {
if pv != nil {
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupport(pv) {
return curPlugin.GetInTreePluginName(), nil
}
}
return "", fmt.Errorf("could not find in-tree plugin name from persistent volume %v", pv)
} else if vol != nil {
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupportInline(vol) {
return curPlugin.GetInTreePluginName(), nil
}
}
return "", fmt.Errorf("could not find in-tree plugin name from volume %v", vol)
} else {
return "", errors.New("both persistent volume and volume are nil")
}
}
// GetCSINameFromInTreeName returns the name of a CSI driver that supersedes the
// in-tree plugin with the given name
func (CSITranslator) GetCSINameFromInTreeName(pluginName string) (string, error) {
for csiDriverName, curPlugin := range inTreePlugins {
if curPlugin.GetInTreePluginName() == pluginName {
return csiDriverName, nil
}
}
return "", fmt.Errorf("could not find CSI Driver name for plugin %v", pluginName)
}
// GetInTreeNameFromCSIName returns the name of the in-tree plugin superseded by
// a CSI driver with the given name
func (CSITranslator) GetInTreeNameFromCSIName(pluginName string) (string, error) {
if plugin, ok := inTreePlugins[pluginName]; ok {
return plugin.GetInTreePluginName(), nil
}
return "", fmt.Errorf("could not find In-Tree driver name for CSI plugin %v", pluginName)
}
// IsPVMigratable tests whether there is migration logic for the given Persistent Volume
func (CSITranslator) IsPVMigratable(pv *v1.PersistentVolume) bool {
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupport(pv) {
return true
}
}
return false
}
// IsInlineMigratable tests whether there is Migration logic for the given Inline Volume
func (CSITranslator) IsInlineMigratable(vol *v1.Volume) bool {
for _, curPlugin := range inTreePlugins {
if curPlugin.CanSupportInline(vol) {
return true
}
}
return false
}
// RepairVolumeHandle generates a correct volume handle based on node ID information.
func (CSITranslator) RepairVolumeHandle(driverName, volumeHandle, nodeID string) (string, error) {
if plugin, ok := inTreePlugins[driverName]; ok {
return plugin.RepairVolumeHandle(volumeHandle, nodeID)
}
return "", fmt.Errorf("could not find In-Tree driver name for CSI plugin %v", driverName)
}