func newNFSVolume()

in pkg/nfs/controllerserver.go [671:725]
45 lines of code
13 McCabe index (conditional complexity)

func newNFSVolume(name string, size int64, params map[string]string, defaultOnDeletePolicy string) (*nfsVolume, error) {
	var server, baseDir, subDir, onDelete string
	subDirReplaceMap := map[string]string{}

	// validate parameters (case-insensitive)
	for k, v := range params {
		switch strings.ToLower(k) {
		case paramServer:
			server = v
		case paramShare:
			baseDir = v
		case paramSubDir:
			subDir = v
		case paramOnDelete:
			onDelete = v
		case pvcNamespaceKey:
			subDirReplaceMap[pvcNamespaceMetadata] = v
		case pvcNameKey:
			subDirReplaceMap[pvcNameMetadata] = v
		case pvNameKey:
			subDirReplaceMap[pvNameMetadata] = v
		}
	}

	if server == "" {
		return nil, fmt.Errorf("%v is a required parameter", paramServer)
	}

	vol := &nfsVolume{
		server:  server,
		baseDir: baseDir,
		size:    size,
	}
	if subDir == "" {
		// use pv name by default if not specified
		vol.subDir = name
	} else {
		// replace pv/pvc name namespace metadata in subDir
		vol.subDir = replaceWithMap(subDir, subDirReplaceMap)
		// make volume id unique if subDir is provided
		vol.uuid = name
	}

	if err := validateOnDeleteValue(onDelete); err != nil {
		return nil, err
	}

	vol.onDelete = defaultOnDeletePolicy
	if onDelete != "" {
		vol.onDelete = onDelete
	}

	vol.id = getVolumeIDFromNfsVol(vol)
	return vol, nil
}