Fix golint issues for pkg/volume/{fc,flocker} packages

hack/.golint_failures

@@ -389,8 +389,6 @@ pkg/volume/cephfs
 pkg/volume/configmap
 pkg/volume/csi/fake
 pkg/volume/empty_dir
-pkg/volume/fc
-pkg/volume/flocker
 pkg/volume/git_repo
 pkg/volume/host_path
 pkg/volume/iscsi

pkg/volume/fc/attacher.go

@@ -49,7 +49,7 @@ var _ volume.DeviceMountableVolumePlugin = &fcPlugin{}
 func (plugin *fcPlugin) NewAttacher() (volume.Attacher, error) {
 	return &fcAttacher{
 		host:    plugin.host,
-		manager: &FCUtil{},
+		manager: &fcUtil{},
 	}, nil
 }
 
@@ -142,7 +142,7 @@ var _ volume.DeviceUnmounter = &fcDetacher{}
 func (plugin *fcPlugin) NewDetacher() (volume.Detacher, error) {
 	return &fcDetacher{
 		mounter: plugin.host.GetMounter(plugin.GetPluginName()),
-		manager: &FCUtil{},
+		manager: &fcUtil{},
 	}, nil
 }
 

pkg/volume/fc/fc.go

@@ -35,7 +35,7 @@ import (
 	"k8s.io/kubernetes/pkg/volume/util/volumepathhandler"
 )
 
-// This is the primary entrypoint for volume plugins.
+// ProbeVolumePlugins is the primary entrypoint for volume plugins.
 func ProbeVolumePlugins() []volume.VolumePlugin {
 	return []volume.VolumePlugin{&fcPlugin{nil}}
 }
@@ -106,7 +106,7 @@ func (plugin *fcPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
 
 func (plugin *fcPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
 	// Inject real implementations here, test through the internal function.
-	return plugin.newMounterInternal(spec, pod.UID, &FCUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
+	return plugin.newMounterInternal(spec, pod.UID, &fcUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
 }
 
 func (plugin *fcPlugin) newMounterInternal(spec *volume.Spec, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec) (volume.Mounter, error) {
@@ -166,7 +166,7 @@ func (plugin *fcPlugin) NewBlockVolumeMapper(spec *volume.Spec, pod *v1.Pod, _ v
 	if pod != nil {
 		uid = pod.UID
 	}
-	return plugin.newBlockVolumeMapperInternal(spec, uid, &FCUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
+	return plugin.newBlockVolumeMapperInternal(spec, uid, &fcUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
 }
 
 func (plugin *fcPlugin) newBlockVolumeMapperInternal(spec *volume.Spec, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec) (volume.BlockVolumeMapper, error) {
@@ -198,7 +198,7 @@ func (plugin *fcPlugin) newBlockVolumeMapperInternal(spec *volume.Spec, podUID t
 
 func (plugin *fcPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
 	// Inject real implementations here, test through the internal function.
-	return plugin.newUnmounterInternal(volName, podUID, &FCUtil{}, plugin.host.GetMounter(plugin.GetPluginName()))
+	return plugin.newUnmounterInternal(volName, podUID, &fcUtil{}, plugin.host.GetMounter(plugin.GetPluginName()))
 }
 
 func (plugin *fcPlugin) newUnmounterInternal(volName string, podUID types.UID, manager diskManager, mounter mount.Interface) (volume.Unmounter, error) {
@@ -216,7 +216,7 @@ func (plugin *fcPlugin) newUnmounterInternal(volName string, podUID types.UID, m
 }
 
 func (plugin *fcPlugin) NewBlockVolumeUnmapper(volName string, podUID types.UID) (volume.BlockVolumeUnmapper, error) {
-	return plugin.newUnmapperInternal(volName, podUID, &FCUtil{})
+	return plugin.newUnmapperInternal(volName, podUID, &fcUtil{})
 }
 
 func (plugin *fcPlugin) newUnmapperInternal(volName string, podUID types.UID, manager diskManager) (volume.BlockVolumeUnmapper, error) {

pkg/volume/fc/fc_test.go

@@ -96,7 +96,7 @@ type fakeDiskManager struct {
 	detachCalled bool
 }
 
-func NewFakeDiskManager() *fakeDiskManager {
+func newFakeDiskManager() *fakeDiskManager {
 	return &fakeDiskManager{
 		tmpDir: utiltesting.MkTmpdirOrDie("fc_test"),
 	}
@@ -161,7 +161,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 	if err != nil {
 		t.Errorf("Can't find the plugin by name")
 	}
-	fakeManager := NewFakeDiskManager()
+	fakeManager := newFakeDiskManager()
 	defer fakeManager.Cleanup()
 	fakeMounter := &mount.FakeMounter{}
 	fakeExec := mount.NewFakeExec(nil)
@@ -190,7 +190,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 		}
 	}
 
-	fakeManager2 := NewFakeDiskManager()
+	fakeManager2 := newFakeDiskManager()
 	defer fakeManager2.Cleanup()
 	unmounter, err := plug.(*fcPlugin).newUnmounterInternal("vol1", types.UID("poduid"), fakeManager2, fakeMounter)
 	if err != nil {
@@ -224,7 +224,7 @@ func doTestPluginNilMounter(t *testing.T, spec *volume.Spec) {
 	if err != nil {
 		t.Errorf("Can't find the plugin by name")
 	}
-	fakeManager := NewFakeDiskManager()
+	fakeManager := newFakeDiskManager()
 	defer fakeManager.Cleanup()
 	fakeMounter := &mount.FakeMounter{}
 	fakeExec := mount.NewFakeExec(nil)

pkg/volume/fc/fc_util.go

@@ -62,13 +62,13 @@ func (handler *osIOHandler) WriteFile(filename string, data []byte, perm os.File
 
 // given a wwn and lun, find the device and associated devicemapper parent
 func findDisk(wwn, lun string, io ioHandler, deviceUtil volumeutil.DeviceUtil) (string, string) {
-	fc_path := "-fc-0x" + wwn + "-lun-" + lun
-	dev_path := byPath
-	if dirs, err := io.ReadDir(dev_path); err == nil {
+	fcPath := "-fc-0x" + wwn + "-lun-" + lun
+	devPath := byPath
+	if dirs, err := io.ReadDir(devPath); err == nil {
 		for _, f := range dirs {
 			name := f.Name()
-			if strings.Contains(name, fc_path) {
-				if disk, err1 := io.EvalSymlinks(dev_path + name); err1 == nil {
+			if strings.Contains(name, fcPath) {
+				if disk, err1 := io.EvalSymlinks(devPath + name); err1 == nil {
 					dm := deviceUtil.FindMultipathDeviceForDevice(disk)
 					glog.Infof("fc: find disk: %v, dm: %v", disk, dm)
 					return disk, dm
@@ -90,15 +90,15 @@ func findDiskWWIDs(wwid string, io ioHandler, deviceUtil volumeutil.DeviceUtil)
 	// The wwid could contain white space and it will be replaced
 	// underscore when wwid is exposed under /dev/by-id.
 
-	fc_path := "scsi-" + wwid
-	dev_id := byID
-	if dirs, err := io.ReadDir(dev_id); err == nil {
+	fcPath := "scsi-" + wwid
+	devID := byID
+	if dirs, err := io.ReadDir(devID); err == nil {
 		for _, f := range dirs {
 			name := f.Name()
-			if name == fc_path {
-				disk, err := io.EvalSymlinks(dev_id + name)
+			if name == fcPath {
+				disk, err := io.EvalSymlinks(devID + name)
 				if err != nil {
-					glog.V(2).Infof("fc: failed to find a corresponding disk from symlink[%s], error %v", dev_id+name, err)
+					glog.V(2).Infof("fc: failed to find a corresponding disk from symlink[%s], error %v", devID+name, err)
 					return "", ""
 				}
 				dm := deviceUtil.FindMultipathDeviceForDevice(disk)
@@ -107,7 +107,7 @@ func findDiskWWIDs(wwid string, io ioHandler, deviceUtil volumeutil.DeviceUtil)
 			}
 		}
 	}
-	glog.V(2).Infof("fc: failed to find a disk [%s]", dev_id+fc_path)
+	glog.V(2).Infof("fc: failed to find a disk [%s]", devID+fcPath)
 	return "", ""
 }
 
@@ -121,10 +121,10 @@ func removeFromScsiSubsystem(deviceName string, io ioHandler) {
 
 // rescan scsi bus
 func scsiHostRescan(io ioHandler) {
-	scsi_path := "/sys/class/scsi_host/"
-	if dirs, err := io.ReadDir(scsi_path); err == nil {
+	scsiPath := "/sys/class/scsi_host/"
+	if dirs, err := io.ReadDir(scsiPath); err == nil {
 		for _, f := range dirs {
-			name := scsi_path + f.Name() + "/scan"
+			name := scsiPath + f.Name() + "/scan"
 			data := []byte("- - -")
 			io.WriteFile(name, data, 0666)
 		}
@@ -135,33 +135,31 @@ func scsiHostRescan(io ioHandler) {
 func makePDNameInternal(host volume.VolumeHost, wwns []string, lun string, wwids []string) string {
 	if len(wwns) != 0 {
 		return path.Join(host.GetPluginDir(fcPluginName), wwns[0]+"-lun-"+lun)
-	} else {
-		return path.Join(host.GetPluginDir(fcPluginName), wwids[0])
 	}
+	return path.Join(host.GetPluginDir(fcPluginName), wwids[0])
 }
 
 // make a directory like /var/lib/kubelet/plugins/kubernetes.io/fc/volumeDevices/target-lun-0
 func makeVDPDNameInternal(host volume.VolumeHost, wwns []string, lun string, wwids []string) string {
 	if len(wwns) != 0 {
 		return path.Join(host.GetVolumeDevicePluginDir(fcPluginName), wwns[0]+"-lun-"+lun)
-	} else {
-		return path.Join(host.GetVolumeDevicePluginDir(fcPluginName), wwids[0])
 	}
+	return path.Join(host.GetVolumeDevicePluginDir(fcPluginName), wwids[0])
 }
 
-type FCUtil struct{}
+type fcUtil struct{}
 
-func (util *FCUtil) MakeGlobalPDName(fc fcDisk) string {
+func (util *fcUtil) MakeGlobalPDName(fc fcDisk) string {
 	return makePDNameInternal(fc.plugin.host, fc.wwns, fc.lun, fc.wwids)
 }
 
 // Global volume device plugin dir
-func (util *FCUtil) MakeGlobalVDPDName(fc fcDisk) string {
+func (util *fcUtil) MakeGlobalVDPDName(fc fcDisk) string {
 	return makeVDPDNameInternal(fc.plugin.host, fc.wwns, fc.lun, fc.wwids)
 }
 
 func searchDisk(b fcDiskMounter) (string, error) {
-	var diskIds []string
+	var diskIDs []string
 	var disk string
 	var dm string
 	io := b.io
@@ -170,9 +168,9 @@ func searchDisk(b fcDiskMounter) (string, error) {
 	lun := b.lun
 
 	if len(wwns) != 0 {
-		diskIds = wwns
+		diskIDs = wwns
 	} else {
-		diskIds = wwids
+		diskIDs = wwids
 	}
 
 	rescaned := false
@@ -180,11 +178,11 @@ func searchDisk(b fcDiskMounter) (string, error) {
 	// first phase, search existing device path, if a multipath dm is found, exit loop
 	// otherwise, in second phase, rescan scsi bus and search again, return with any findings
 	for true {
-		for _, diskId := range diskIds {
+		for _, diskID := range diskIDs {
 			if len(wwns) != 0 {
-				disk, dm = findDisk(diskId, lun, io, b.deviceUtil)
+				disk, dm = findDisk(diskID, lun, io, b.deviceUtil)
 			} else {
-				disk, dm = findDiskWWIDs(diskId, io, b.deviceUtil)
+				disk, dm = findDiskWWIDs(diskID, io, b.deviceUtil)
 			}
 			// if multipath device is found, break
 			if dm != "" {
@@ -212,7 +210,7 @@ func searchDisk(b fcDiskMounter) (string, error) {
 	return disk, nil
 }
 
-func (util *FCUtil) AttachDisk(b fcDiskMounter) (string, error) {
+func (util *fcUtil) AttachDisk(b fcDiskMounter) (string, error) {
 	devicePath, err := searchDisk(b)
 	if err != nil {
 		return "", err
@@ -251,7 +249,7 @@ func (util *FCUtil) AttachDisk(b fcDiskMounter) (string, error) {
 }
 
 // DetachDisk removes scsi device file such as /dev/sdX from the node.
-func (util *FCUtil) DetachDisk(c fcDiskUnmounter, devicePath string) error {
+func (util *fcUtil) DetachDisk(c fcDiskUnmounter, devicePath string) error {
 	var devices []string
 	// devicePath might be like /dev/mapper/mpathX. Find destination.
 	dstPath, err := c.io.EvalSymlinks(devicePath)
@@ -282,7 +280,7 @@ func (util *FCUtil) DetachDisk(c fcDiskUnmounter, devicePath string) error {
 }
 
 // detachFCDisk removes scsi device file such as /dev/sdX from the node.
-func (util *FCUtil) detachFCDisk(io ioHandler, devicePath string) error {
+func (util *fcUtil) detachFCDisk(io ioHandler, devicePath string) error {
 	// Remove scsi device from the node.
 	if !strings.HasPrefix(devicePath, "/dev/") {
 		return fmt.Errorf("fc detach disk: invalid device name: %s", devicePath)
@@ -295,7 +293,7 @@ func (util *FCUtil) detachFCDisk(io ioHandler, devicePath string) error {
 
 // DetachBlockFCDisk detaches a volume from kubelet node, removes scsi device file
 // such as /dev/sdX from the node, and then removes loopback for the scsi device.
-func (util *FCUtil) DetachBlockFCDisk(c fcDiskUnmapper, mapPath, devicePath string) error {
+func (util *fcUtil) DetachBlockFCDisk(c fcDiskUnmapper, mapPath, devicePath string) error {
 	// Check if devicePath is valid
 	if len(devicePath) != 0 {
 		if pathExists, pathErr := checkPathExists(devicePath); !pathExists || pathErr != nil {

pkg/volume/flocker/flocker.go

@@ -34,7 +34,7 @@ import (
 	"k8s.io/kubernetes/pkg/volume/util"
 )
 
-// This is the primary entrypoint for volume plugins.
+// ProbeVolumePlugins is the primary entrypoint for volume plugins.
 func ProbeVolumePlugins() []volume.VolumePlugin {
 	return []volume.VolumePlugin{&flockerPlugin{nil}}
 }
@@ -116,11 +116,11 @@ func (p *flockerPlugin) SupportsMountOption() bool {
 	return false
 }
 
-func (plugin *flockerPlugin) SupportsBulkVolumeVerification() bool {
+func (p *flockerPlugin) SupportsBulkVolumeVerification() bool {
 	return false
 }
 
-func (plugin *flockerPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
+func (p *flockerPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
 	return []v1.PersistentVolumeAccessMode{
 		v1.ReadWriteOnce,
 	}
@@ -136,12 +136,12 @@ func (p *flockerPlugin) getFlockerVolumeSource(spec *volume.Spec) (*v1.FlockerVo
 	return spec.PersistentVolume.Spec.Flocker, readOnly
 }
 
-func (plugin *flockerPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
+func (p *flockerPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
 	// Inject real implementations here, test through the internal function.
-	return plugin.newMounterInternal(spec, pod.UID, &FlockerUtil{}, plugin.host.GetMounter(plugin.GetPluginName()))
+	return p.newMounterInternal(spec, pod.UID, &flockerUtil{}, p.host.GetMounter(p.GetPluginName()))
 }
 
-func (plugin *flockerPlugin) newMounterInternal(spec *volume.Spec, podUID types.UID, manager volumeManager, mounter mount.Interface) (volume.Mounter, error) {
+func (p *flockerPlugin) newMounterInternal(spec *volume.Spec, podUID types.UID, manager volumeManager, mounter mount.Interface) (volume.Mounter, error) {
 	volumeSource, readOnly, err := getVolumeSource(spec)
 	if err != nil {
 		return nil, err
@@ -158,15 +158,15 @@ func (plugin *flockerPlugin) newMounterInternal(spec *volume.Spec, podUID types.
 			datasetUUID:     datasetUUID,
 			mounter:         mounter,
 			manager:         manager,
-			plugin:          plugin,
-			MetricsProvider: volume.NewMetricsStatFS(getPath(podUID, spec.Name(), plugin.host)),
+			plugin:          p,
+			MetricsProvider: volume.NewMetricsStatFS(getPath(podUID, spec.Name(), p.host)),
 		},
 		readOnly: readOnly}, nil
 }
 
 func (p *flockerPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
 	// Inject real implementations here, test through the internal function.
-	return p.newUnmounterInternal(volName, podUID, &FlockerUtil{}, p.host.GetMounter(p.GetPluginName()))
+	return p.newUnmounterInternal(volName, podUID, &flockerUtil{}, p.host.GetMounter(p.GetPluginName()))
 }
 
 func (p *flockerPlugin) newUnmounterInternal(volName string, podUID types.UID, manager volumeManager, mounter mount.Interface) (volume.Unmounter, error) {
@@ -304,7 +304,7 @@ func (b *flockerVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		}
 		_, err := b.flockerClient.GetDatasetState(datasetUUID)
 		if err != nil {
-			return fmt.Errorf("The volume with datasetUUID='%s' migrated unsuccessfully.", datasetUUID)
+			return fmt.Errorf("The volume with datasetUUID='%s' migrated unsuccessfully", datasetUUID)
 		}
 	}
 
@@ -433,11 +433,11 @@ func (c *flockerVolumeUnmounter) TearDownAt(dir string) error {
 	return util.UnmountPath(dir, c.mounter)
 }
 
-func (plugin *flockerPlugin) NewDeleter(spec *volume.Spec) (volume.Deleter, error) {
-	return plugin.newDeleterInternal(spec, &FlockerUtil{})
+func (p *flockerPlugin) NewDeleter(spec *volume.Spec) (volume.Deleter, error) {
+	return p.newDeleterInternal(spec, &flockerUtil{})
 }
 
-func (plugin *flockerPlugin) newDeleterInternal(spec *volume.Spec, manager volumeManager) (volume.Deleter, error) {
+func (p *flockerPlugin) newDeleterInternal(spec *volume.Spec, manager volumeManager) (volume.Deleter, error) {
 	if spec.PersistentVolume != nil && spec.PersistentVolume.Spec.Flocker == nil {
 		return nil, fmt.Errorf("spec.PersistentVolumeSource.Flocker is nil")
 	}
@@ -450,15 +450,15 @@ func (plugin *flockerPlugin) newDeleterInternal(spec *volume.Spec, manager volum
 		}}, nil
 }
 
-func (plugin *flockerPlugin) NewProvisioner(options volume.VolumeOptions) (volume.Provisioner, error) {
-	return plugin.newProvisionerInternal(options, &FlockerUtil{})
+func (p *flockerPlugin) NewProvisioner(options volume.VolumeOptions) (volume.Provisioner, error) {
+	return p.newProvisionerInternal(options, &flockerUtil{})
 }
 
-func (plugin *flockerPlugin) newProvisionerInternal(options volume.VolumeOptions, manager volumeManager) (volume.Provisioner, error) {
+func (p *flockerPlugin) newProvisionerInternal(options volume.VolumeOptions, manager volumeManager) (volume.Provisioner, error) {
 	return &flockerVolumeProvisioner{
 		flockerVolume: &flockerVolume{
 			manager: manager,
-			plugin:  plugin,
+			plugin:  p,
 		},
 		options: options,
 	}, nil

pkg/volume/flocker/flocker_util.go

@@ -29,9 +29,9 @@ import (
 	"github.com/golang/glog"
 )
 
-type FlockerUtil struct{}
+type flockerUtil struct{}
 
-func (util *FlockerUtil) DeleteVolume(d *flockerVolumeDeleter) error {
+func (util *flockerUtil) DeleteVolume(d *flockerVolumeDeleter) error {
 	var err error
 
 	if d.flockerClient == nil {
@@ -49,7 +49,7 @@ func (util *FlockerUtil) DeleteVolume(d *flockerVolumeDeleter) error {
 	return d.flockerClient.DeleteDataset(datasetUUID)
 }
 
-func (util *FlockerUtil) CreateVolume(c *flockerVolumeProvisioner) (datasetUUID string, volumeSizeGiB int, labels map[string]string, err error) {
+func (util *flockerUtil) CreateVolume(c *flockerVolumeProvisioner) (datasetUUID string, volumeSizeGiB int, labels map[string]string, err error) {
 
 	if c.flockerClient == nil {
 		c.flockerClient, err = c.plugin.newFlockerClient("")

pkg/volume/flocker/flocker_util_test.go

@@ -44,7 +44,7 @@ func TestFlockerUtil_CreateVolume(t *testing.T) {
 	defer os.RemoveAll(dir)
 	provisioner.flockerClient = fakeFlockerClient
 
-	flockerUtil := &FlockerUtil{}
+	flockerUtil := &flockerUtil{}
 
 	datasetID, size, _, err := flockerUtil.CreateVolume(provisioner)
 	assert.NoError(err)

pkg/volume/flocker/flocker_volume.go

@@ -43,8 +43,8 @@ func (b *flockerVolumeDeleter) GetPath() string {
 	return getPath(b.podUID, b.volName, b.plugin.host)
 }
 
-func (d *flockerVolumeDeleter) Delete() error {
-	return d.manager.DeleteVolume(d)
+func (b *flockerVolumeDeleter) Delete() error {
+	return b.manager.DeleteVolume(b)
 }
 
 type flockerVolumeProvisioner struct {