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Merge pull request #59097 from zhangxiaoyu-zidif/delete-redundant-get-volumesource

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Automatic merge from submit-queue (batch tested with PRs 59097, 57076, 59295). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

delete duplicate function for getting volume source

**What this PR does / why we need it**:
these two methods have same function.
```go
func getVolumeSource(
	spec *volume.Spec) (*v1.GlusterfsVolumeSource, bool, error) {
	if spec.Volume != nil && spec.Volume.Glusterfs != nil {
		return spec.Volume.Glusterfs, spec.Volume.Glusterfs.ReadOnly, nil
	} else if spec.PersistentVolume != nil &&
		spec.PersistentVolume.Spec.Glusterfs != nil {
		return spec.PersistentVolume.Spec.Glusterfs, spec.ReadOnly, nil
	}

	return nil, false, fmt.Errorf("Spec does not reference a Glusterfs volume type")
}

func (plugin *glusterfsPlugin) getGlusterVolumeSource(spec *volume.Spec) (*v1.GlusterfsVolumeSource, bool) {
	// Glusterfs volumes used directly in a pod have a ReadOnly flag set by the pod author.
	// Glusterfs volumes used as a PersistentVolume gets the ReadOnly flag indirectly through the persistent-claim volume used to mount the PV
	if spec.Volume != nil && spec.Volume.Glusterfs != nil {
		return spec.Volume.Glusterfs, spec.Volume.Glusterfs.ReadOnly
	}
	return spec.PersistentVolume.Spec.Glusterfs, spec.ReadOnly
}
```

`getVolumeSource`  seems to be much better.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2018-02-02 19:37:34 -08:00 committed by GitHub
commit a8581f41e6
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 13 deletions
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20
pkg/volume/glusterfs/glusterfs.go
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@ -143,7 +143,11 @@ func (plugin *glusterfsPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode
}
func (plugin *glusterfsPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
source, _ := plugin.getGlusterVolumeSource(spec)
source, _, err := getVolumeSource(spec)
if err != nil {
glog.Errorf("failed to get gluster volumesource: %v", err)
return nil, err
}
epName := source.EndpointsName
// PVC/POD is in same ns.
podNs := pod.Namespace
@ -160,17 +164,8 @@ func (plugin *glusterfsPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volu
return plugin.newMounterInternal(spec, ep, pod, plugin.host.GetMounter(plugin.GetPluginName()))
}
func (plugin *glusterfsPlugin) getGlusterVolumeSource(spec *volume.Spec) (*v1.GlusterfsVolumeSource, bool) {
// Glusterfs volumes used directly in a pod have a ReadOnly flag set by the pod author.
// Glusterfs volumes used as a PersistentVolume gets the ReadOnly flag indirectly through the persistent-claim volume used to mount the PV
if spec.Volume != nil && spec.Volume.Glusterfs != nil {
return spec.Volume.Glusterfs, spec.Volume.Glusterfs.ReadOnly
}
return spec.PersistentVolume.Spec.Glusterfs, spec.ReadOnly
}
func (plugin *glusterfsPlugin) newMounterInternal(spec *volume.Spec, ep *v1.Endpoints, pod *v1.Pod, mounter mount.Interface) (volume.Mounter, error) {
source, readOnly := plugin.getGlusterVolumeSource(spec)
source, readOnly, _ := getVolumeSource(spec)
return &glusterfsMounter{
glusterfs: &glusterfs{
volName: spec.Name(),
@ -379,8 +374,7 @@ func (b *glusterfsMounter) setUpAtInternal(dir string) error {
}
func getVolumeSource(
spec *volume.Spec) (*v1.GlusterfsVolumeSource, bool, error) {
func getVolumeSource(spec *volume.Spec) (*v1.GlusterfsVolumeSource, bool, error) {
if spec.Volume != nil && spec.Volume.Glusterfs != nil {
return spec.Volume.Glusterfs, spec.Volume.Glusterfs.ReadOnly, nil
} else if spec.PersistentVolume != nil &&