mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-06-14 02:43:36 +00:00
vendor files
This commit is contained in:
Serguei Bezverkhi
399
vendor/k8s.io/kubernetes/pkg/volume/iscsi/iscsi.go
generated
vendored
Normal file
399
vendor/k8s.io/kubernetes/pkg/volume/iscsi/iscsi.go
generated
vendored
Normal file
@ -0,0 +1,399 @@
|
||||
/*
|
||||
Copyright 2015 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 iscsi
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/golang/glog"
|
||||
"k8s.io/api/core/v1"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/types"
|
||||
"k8s.io/kubernetes/pkg/util/mount"
|
||||
utilstrings "k8s.io/kubernetes/pkg/util/strings"
|
||||
"k8s.io/kubernetes/pkg/volume"
|
||||
ioutil "k8s.io/kubernetes/pkg/volume/util"
|
||||
)
|
||||
|
||||
// This is the primary entrypoint for volume plugins.
|
||||
func ProbeVolumePlugins() []volume.VolumePlugin {
|
||||
return []volume.VolumePlugin{&iscsiPlugin{nil}}
|
||||
}
|
||||
|
||||
type iscsiPlugin struct {
|
||||
host volume.VolumeHost
|
||||
}
|
||||
|
||||
var _ volume.VolumePlugin = &iscsiPlugin{}
|
||||
var _ volume.PersistentVolumePlugin = &iscsiPlugin{}
|
||||
|
||||
const (
|
||||
iscsiPluginName = "kubernetes.io/iscsi"
|
||||
)
|
||||
|
||||
func (plugin *iscsiPlugin) Init(host volume.VolumeHost) error {
|
||||
plugin.host = host
|
||||
return nil
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) GetPluginName() string {
|
||||
return iscsiPluginName
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) GetVolumeName(spec *volume.Spec) (string, error) {
|
||||
tp, _, iqn, lun, err := getISCSITargetInfo(spec)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return fmt.Sprintf("%v:%v:%v", tp, iqn, lun), nil
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) CanSupport(spec *volume.Spec) bool {
|
||||
if (spec.Volume != nil && spec.Volume.ISCSI == nil) || (spec.PersistentVolume != nil && spec.PersistentVolume.Spec.ISCSI == nil) {
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) RequiresRemount() bool {
|
||||
return false
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) SupportsMountOption() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) SupportsBulkVolumeVerification() bool {
|
||||
return false
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
|
||||
return []v1.PersistentVolumeAccessMode{
|
||||
v1.ReadWriteOnce,
|
||||
v1.ReadOnlyMany,
|
||||
}
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
|
||||
// Inject real implementations here, test through the internal function.
|
||||
var secret map[string]string
|
||||
if pod == nil {
|
||||
return nil, fmt.Errorf("nil pod")
|
||||
}
|
||||
chapDiscover, err := getISCSIDiscoveryCHAPInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
chapSession, err := getISCSISessionCHAPInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if chapDiscover || chapSession {
|
||||
secretName, secretNamespace, err := getISCSISecretNameAndNamespace(spec, pod.Namespace)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(secretName) > 0 && len(secretNamespace) > 0 {
|
||||
// if secret is provideded, retrieve it
|
||||
kubeClient := plugin.host.GetKubeClient()
|
||||
if kubeClient == nil {
|
||||
return nil, fmt.Errorf("Cannot get kube client")
|
||||
}
|
||||
secretObj, err := kubeClient.Core().Secrets(secretNamespace).Get(secretName, metav1.GetOptions{})
|
||||
if err != nil {
|
||||
err = fmt.Errorf("Couldn't get secret %v/%v error: %v", secretNamespace, secretName, err)
|
||||
return nil, err
|
||||
}
|
||||
secret = make(map[string]string)
|
||||
for name, data := range secretObj.Data {
|
||||
glog.V(4).Infof("retrieving CHAP secret name: %s", name)
|
||||
secret[name] = string(data)
|
||||
}
|
||||
}
|
||||
}
|
||||
return plugin.newMounterInternal(spec, pod.UID, &ISCSIUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()), secret)
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) newMounterInternal(spec *volume.Spec, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec, secret map[string]string) (volume.Mounter, error) {
|
||||
// iscsi volumes used directly in a pod have a ReadOnly flag set by the pod author.
|
||||
// iscsi volumes used as a PersistentVolume gets the ReadOnly flag indirectly through the persistent-claim volume used to mount the PV
|
||||
readOnly, fsType, err := getISCSIVolumeInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
tp, portals, iqn, lunStr, err := getISCSITargetInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
lun := strconv.Itoa(int(lunStr))
|
||||
portal := portalMounter(tp)
|
||||
var bkportal []string
|
||||
bkportal = append(bkportal, portal)
|
||||
for _, p := range portals {
|
||||
bkportal = append(bkportal, portalMounter(string(p)))
|
||||
}
|
||||
|
||||
iface, initiatorNamePtr, err := getISCSIInitiatorInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var initiatorName string
|
||||
if initiatorNamePtr != nil {
|
||||
initiatorName = *initiatorNamePtr
|
||||
}
|
||||
chapDiscovery, err := getISCSIDiscoveryCHAPInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
chapSession, err := getISCSISessionCHAPInfo(spec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &iscsiDiskMounter{
|
||||
iscsiDisk: &iscsiDisk{
|
||||
podUID: podUID,
|
||||
VolName: spec.Name(),
|
||||
Portals: bkportal,
|
||||
Iqn: iqn,
|
||||
lun: lun,
|
||||
Iface: iface,
|
||||
chap_discovery: chapDiscovery,
|
||||
chap_session: chapSession,
|
||||
secret: secret,
|
||||
InitiatorName: initiatorName,
|
||||
manager: manager,
|
||||
plugin: plugin},
|
||||
fsType: fsType,
|
||||
readOnly: readOnly,
|
||||
mounter: &mount.SafeFormatAndMount{Interface: mounter, Exec: exec},
|
||||
exec: exec,
|
||||
deviceUtil: ioutil.NewDeviceHandler(ioutil.NewIOHandler()),
|
||||
mountOptions: volume.MountOptionFromSpec(spec),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
|
||||
// Inject real implementations here, test through the internal function.
|
||||
return plugin.newUnmounterInternal(volName, podUID, &ISCSIUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) newUnmounterInternal(volName string, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec) (volume.Unmounter, error) {
|
||||
return &iscsiDiskUnmounter{
|
||||
iscsiDisk: &iscsiDisk{
|
||||
podUID: podUID,
|
||||
VolName: volName,
|
||||
manager: manager,
|
||||
plugin: plugin,
|
||||
},
|
||||
mounter: mounter,
|
||||
exec: exec,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (plugin *iscsiPlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
|
||||
iscsiVolume := &v1.Volume{
|
||||
Name: volumeName,
|
||||
VolumeSource: v1.VolumeSource{
|
||||
ISCSI: &v1.ISCSIVolumeSource{
|
||||
TargetPortal: volumeName,
|
||||
IQN: volumeName,
|
||||
},
|
||||
},
|
||||
}
|
||||
return volume.NewSpecFromVolume(iscsiVolume), nil
|
||||
}
|
||||
|
||||
type iscsiDisk struct {
|
||||
VolName string
|
||||
podUID types.UID
|
||||
Portals []string
|
||||
Iqn string
|
||||
lun string
|
||||
Iface string
|
||||
chap_discovery bool
|
||||
chap_session bool
|
||||
secret map[string]string
|
||||
InitiatorName string
|
||||
plugin *iscsiPlugin
|
||||
// Utility interface that provides API calls to the provider to attach/detach disks.
|
||||
manager diskManager
|
||||
volume.MetricsNil
|
||||
}
|
||||
|
||||
func (iscsi *iscsiDisk) GetPath() string {
|
||||
name := iscsiPluginName
|
||||
// safe to use PodVolumeDir now: volume teardown occurs before pod is cleaned up
|
||||
return iscsi.plugin.host.GetPodVolumeDir(iscsi.podUID, utilstrings.EscapeQualifiedNameForDisk(name), iscsi.VolName)
|
||||
}
|
||||
|
||||
type iscsiDiskMounter struct {
|
||||
*iscsiDisk
|
||||
readOnly bool
|
||||
fsType string
|
||||
mounter *mount.SafeFormatAndMount
|
||||
exec mount.Exec
|
||||
deviceUtil ioutil.DeviceUtil
|
||||
mountOptions []string
|
||||
}
|
||||
|
||||
var _ volume.Mounter = &iscsiDiskMounter{}
|
||||
|
||||
func (b *iscsiDiskMounter) GetAttributes() volume.Attributes {
|
||||
return volume.Attributes{
|
||||
ReadOnly: b.readOnly,
|
||||
Managed: !b.readOnly,
|
||||
SupportsSELinux: true,
|
||||
}
|
||||
}
|
||||
|
||||
// Checks prior to mount operations to verify that the required components (binaries, etc.)
|
||||
// to mount the volume are available on the underlying node.
|
||||
// If not, it returns an error
|
||||
func (b *iscsiDiskMounter) CanMount() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (b *iscsiDiskMounter) SetUp(fsGroup *int64) error {
|
||||
return b.SetUpAt(b.GetPath(), fsGroup)
|
||||
}
|
||||
|
||||
func (b *iscsiDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
|
||||
// diskSetUp checks mountpoints and prevent repeated calls
|
||||
err := diskSetUp(b.manager, *b, dir, b.mounter, fsGroup)
|
||||
if err != nil {
|
||||
glog.Errorf("iscsi: failed to setup")
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
type iscsiDiskUnmounter struct {
|
||||
*iscsiDisk
|
||||
mounter mount.Interface
|
||||
exec mount.Exec
|
||||
}
|
||||
|
||||
var _ volume.Unmounter = &iscsiDiskUnmounter{}
|
||||
|
||||
// Unmounts the bind mount, and detaches the disk only if the disk
|
||||
// resource was the last reference to that disk on the kubelet.
|
||||
func (c *iscsiDiskUnmounter) TearDown() error {
|
||||
return c.TearDownAt(c.GetPath())
|
||||
}
|
||||
|
||||
func (c *iscsiDiskUnmounter) TearDownAt(dir string) error {
|
||||
return ioutil.UnmountPath(dir, c.mounter)
|
||||
}
|
||||
|
||||
func portalMounter(portal string) string {
|
||||
if !strings.Contains(portal, ":") {
|
||||
portal = portal + ":3260"
|
||||
}
|
||||
return portal
|
||||
}
|
||||
|
||||
// get iSCSI volume info: readOnly and fstype
|
||||
func getISCSIVolumeInfo(spec *volume.Spec) (bool, string, error) {
|
||||
// for volume source, readonly is in volume spec
|
||||
// for PV, readonly is in PV spec
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
return spec.Volume.ISCSI.ReadOnly, spec.Volume.ISCSI.FSType, nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
return spec.ReadOnly, spec.PersistentVolume.Spec.ISCSI.FSType, nil
|
||||
}
|
||||
|
||||
return false, "", fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
|
||||
// get iSCSI target info: target portal, portals, iqn, and lun
|
||||
func getISCSITargetInfo(spec *volume.Spec) (string, []string, string, int32, error) {
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
return spec.Volume.ISCSI.TargetPortal, spec.Volume.ISCSI.Portals, spec.Volume.ISCSI.IQN, spec.Volume.ISCSI.Lun, nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
return spec.PersistentVolume.Spec.ISCSI.TargetPortal, spec.PersistentVolume.Spec.ISCSI.Portals, spec.PersistentVolume.Spec.ISCSI.IQN, spec.PersistentVolume.Spec.ISCSI.Lun, nil
|
||||
}
|
||||
|
||||
return "", nil, "", 0, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
|
||||
// get iSCSI initiator info: iface and initiator name
|
||||
func getISCSIInitiatorInfo(spec *volume.Spec) (string, *string, error) {
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
return spec.Volume.ISCSI.ISCSIInterface, spec.Volume.ISCSI.InitiatorName, nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
return spec.PersistentVolume.Spec.ISCSI.ISCSIInterface, spec.PersistentVolume.Spec.ISCSI.InitiatorName, nil
|
||||
}
|
||||
|
||||
return "", nil, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
|
||||
// get iSCSI Discovery CHAP boolean
|
||||
func getISCSIDiscoveryCHAPInfo(spec *volume.Spec) (bool, error) {
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
return spec.Volume.ISCSI.DiscoveryCHAPAuth, nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
return spec.PersistentVolume.Spec.ISCSI.DiscoveryCHAPAuth, nil
|
||||
}
|
||||
|
||||
return false, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
|
||||
// get iSCSI Session CHAP boolean
|
||||
func getISCSISessionCHAPInfo(spec *volume.Spec) (bool, error) {
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
return spec.Volume.ISCSI.SessionCHAPAuth, nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
return spec.PersistentVolume.Spec.ISCSI.SessionCHAPAuth, nil
|
||||
}
|
||||
|
||||
return false, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
|
||||
// get iSCSI CHAP Secret info: secret name and namespace
|
||||
func getISCSISecretNameAndNamespace(spec *volume.Spec, defaultSecretNamespace string) (string, string, error) {
|
||||
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
||||
if spec.Volume.ISCSI.SecretRef != nil {
|
||||
return spec.Volume.ISCSI.SecretRef.Name, defaultSecretNamespace, nil
|
||||
}
|
||||
return "", "", nil
|
||||
} else if spec.PersistentVolume != nil &&
|
||||
spec.PersistentVolume.Spec.ISCSI != nil {
|
||||
secretRef := spec.PersistentVolume.Spec.ISCSI.SecretRef
|
||||
secretNs := defaultSecretNamespace
|
||||
if secretRef != nil {
|
||||
if len(secretRef.Namespace) != 0 {
|
||||
secretNs = secretRef.Namespace
|
||||
}
|
||||
return secretRef.Name, secretNs, nil
|
||||
}
|
||||
return "", "", nil
|
||||
}
|
||||
|
||||
return "", "", fmt.Errorf("Spec does not reference an ISCSI volume type")
|
||||
}
|
||||
Reference in New Issue
Block a user