mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-19 23:19:52 +00:00
130 lines
3.0 KiB
Go
130 lines
3.0 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cephfs
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import (
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"errors"
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"fmt"
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"strconv"
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)
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type volumeOptions struct {
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Monitors string `json:"monitors"`
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Pool string `json:"pool"`
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RootPath string `json:"rootPath"`
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Mounter string `json:"mounter"`
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ProvisionVolume bool `json:"provisionVolume"`
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}
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func validateNonEmptyField(field, fieldName string) error {
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if field == "" {
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return fmt.Errorf("Parameter '%s' cannot be empty", fieldName)
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}
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return nil
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}
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func (o *volumeOptions) validate() error {
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if err := validateNonEmptyField(o.Monitors, "monitors"); err != nil {
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return err
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}
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if err := validateNonEmptyField(o.RootPath, "rootPath"); err != nil {
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if !o.ProvisionVolume {
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return err
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}
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} else {
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if o.ProvisionVolume {
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return fmt.Errorf("Non-empty field rootPath is in conflict with provisionVolume=true")
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}
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}
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if o.ProvisionVolume {
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if err := validateNonEmptyField(o.Pool, "pool"); err != nil {
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return err
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}
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}
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if o.Mounter != "" {
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if err := validateMounter(o.Mounter); err != nil {
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return err
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}
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}
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return nil
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}
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func extractOption(dest *string, optionLabel string, options map[string]string) error {
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if opt, ok := options[optionLabel]; !ok {
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return errors.New("Missing required field " + optionLabel)
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} else {
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*dest = opt
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return nil
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}
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}
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func validateMounter(m string) error {
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switch m {
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case volumeMounter_fuse:
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case volumeMounter_kernel:
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default:
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return fmt.Errorf("Unknown mounter '%s'. Valid options are 'fuse' and 'kernel'", m)
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}
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return nil
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}
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func newVolumeOptions(volOptions map[string]string) (*volumeOptions, error) {
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var (
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opts volumeOptions
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provisionVolumeBool string
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err error
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)
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if err = extractOption(&opts.Monitors, "monitors", volOptions); err != nil {
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return nil, err
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}
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if err = extractOption(&provisionVolumeBool, "provisionVolume", volOptions); err != nil {
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return nil, err
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}
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if opts.ProvisionVolume, err = strconv.ParseBool(provisionVolumeBool); err != nil {
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return nil, fmt.Errorf("Failed to parse provisionVolume: %v", err)
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}
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if opts.ProvisionVolume {
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if err = extractOption(&opts.Pool, "pool", volOptions); err != nil {
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return nil, err
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}
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} else {
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if err = extractOption(&opts.RootPath, "rootPath", volOptions); err != nil {
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return nil, err
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}
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}
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// This field is optional, don't check for its presence
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extractOption(&opts.Mounter, "mounter", volOptions)
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if err = opts.validate(); err != nil {
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return nil, err
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}
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return &opts, nil
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}
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