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Merge pull request #103447 from trierra/csi-translation-portworx
Csi translation portworx
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145 changes: 145 additions & 0 deletions
145
staging/src/k8s.io/csi-translation-lib/plugins/portworx.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /* | ||
| Copyright 2021 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" | ||
|
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| "k8s.io/api/core/v1" | ||
| storagev1 "k8s.io/api/storage/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| ) | ||
|
|
||
| const ( | ||
| PortworxVolumePluginName = "kubernetes.io/portworx-volume" | ||
| PortworxDriverName = "pxd.portworx.com" | ||
| ) | ||
|
|
||
| var _ InTreePlugin = &portworxCSITranslator{} | ||
|
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| type portworxCSITranslator struct{} | ||
|
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| func NewPortworxCSITranslator() InTreePlugin { | ||
| return &portworxCSITranslator{} | ||
| } | ||
|
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| // TranslateInTreeStorageClassToCSI takes in-tree storage class used by in-tree plugin | ||
| // and translates them to a storageclass consumable by CSI plugin | ||
| func (p portworxCSITranslator) TranslateInTreeStorageClassToCSI(sc *storagev1.StorageClass) (*storagev1.StorageClass, error) { | ||
| if sc == nil { | ||
| return nil, fmt.Errorf("sc is nil") | ||
| } | ||
| sc.Provisioner = PortworxDriverName | ||
| return sc, nil | ||
| } | ||
|
|
||
| // TranslateInTreeInlineVolumeToCSI takes a inline volume and will translate | ||
| // the in-tree inline volume source to a CSIPersistentVolumeSource | ||
| func (p portworxCSITranslator) TranslateInTreeInlineVolumeToCSI(volume *v1.Volume, podNamespace string) (*v1.PersistentVolume, error) { | ||
| if volume == nil || volume.PortworxVolume == nil { | ||
| return nil, fmt.Errorf("volume is nil or PortworxVolume not defined on volume") | ||
| } | ||
|
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| var am v1.PersistentVolumeAccessMode | ||
| if volume.PortworxVolume.ReadOnly { | ||
| am = v1.ReadOnlyMany | ||
| } else { | ||
| am = v1.ReadWriteOnce | ||
| } | ||
|
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| pv := &v1.PersistentVolume{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: fmt.Sprintf("%s-%s", PortworxDriverName, volume.PortworxVolume.VolumeID), | ||
| }, | ||
| Spec: v1.PersistentVolumeSpec{ | ||
| PersistentVolumeSource: v1.PersistentVolumeSource{ | ||
| CSI: &v1.CSIPersistentVolumeSource{ | ||
| Driver: PortworxDriverName, | ||
| VolumeHandle: volume.PortworxVolume.VolumeID, | ||
| FSType: volume.PortworxVolume.FSType, | ||
| VolumeAttributes: make(map[string]string), | ||
| }, | ||
| }, | ||
| AccessModes: []v1.PersistentVolumeAccessMode{am}, | ||
| }, | ||
| } | ||
| return pv, nil | ||
| } | ||
|
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| // TranslateInTreePVToCSI takes a Portworx persistent volume and will translate | ||
| // the in-tree pv source to a CSI Source | ||
| func (p portworxCSITranslator) TranslateInTreePVToCSI(pv *v1.PersistentVolume) (*v1.PersistentVolume, error) { | ||
| if pv == nil || pv.Spec.PortworxVolume == nil { | ||
| return nil, fmt.Errorf("pv is nil or PortworxVolume not defined on pv") | ||
| } | ||
| csiSource := &v1.CSIPersistentVolumeSource{ | ||
| Driver: PortworxDriverName, | ||
| VolumeHandle: pv.Spec.PortworxVolume.VolumeID, | ||
| FSType: pv.Spec.PortworxVolume.FSType, | ||
| VolumeAttributes: make(map[string]string), // copy access mode | ||
| } | ||
| pv.Spec.PortworxVolume = nil | ||
| pv.Spec.CSI = csiSource | ||
|
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| return pv, nil | ||
| } | ||
|
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| // 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 | ||
| func (p portworxCSITranslator) 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 | ||
|
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| portworxSource := &v1.PortworxVolumeSource{ | ||
| VolumeID: csiSource.VolumeHandle, | ||
| FSType: csiSource.FSType, | ||
| ReadOnly: csiSource.ReadOnly, | ||
| } | ||
| pv.Spec.CSI = nil | ||
| pv.Spec.PortworxVolume = portworxSource | ||
|
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| return pv, nil | ||
| } | ||
|
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| // CanSupport tests whether the plugin supports a given persistent volume | ||
| // specification from the API. | ||
| func (p portworxCSITranslator) CanSupport(pv *v1.PersistentVolume) bool { | ||
| return pv != nil && pv.Spec.PortworxVolume != nil | ||
| } | ||
|
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| // CanSupportInline tests whether the plugin supports a given inline volume | ||
| // specification from the API. | ||
| func (p portworxCSITranslator) CanSupportInline(volume *v1.Volume) bool { | ||
| return volume != nil && volume.PortworxVolume != nil | ||
| } | ||
|
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| // GetInTreePluginName returns the in-tree plugin name this migrates | ||
| func (p portworxCSITranslator) GetInTreePluginName() string { | ||
| return PortworxVolumePluginName | ||
| } | ||
|
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||
| // GetCSIPluginName returns the name of the CSI plugin that supersedes the in-tree plugin | ||
| func (p portworxCSITranslator) GetCSIPluginName() string { | ||
| return PortworxDriverName | ||
| } | ||
|
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| // RepairVolumeHandle generates a correct volume handle based on node ID information. | ||
| func (p portworxCSITranslator) RepairVolumeHandle(volumeHandle, nodeID string) (string, error) { | ||
| return volumeHandle, nil | ||
| } |
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