f3f48d7d49
This unifies the 3 methods of reading config * command line * environment variable * config file And allows them all to be configured in all places. This is done by making the []fs.Option in the backend registration be the master source of what the backend options are. The backend changes are: * Use the new configmap.Mapper parameter * Use configstruct to parse it into an Options struct * Add all config to []fs.Option including defaults and help * Remove all uses of pflag * Remove all uses of config.FileGet
688 lines
18 KiB
Go
688 lines
18 KiB
Go
// Package yandex provides an interface to the Yandex Disk storage.
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//
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// dibu28 <dibu28@gmail.com> github.com/dibu28
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package yandex
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"path"
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"path/filepath"
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"strings"
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"time"
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yandex "github.com/ncw/rclone/backend/yandex/api"
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"github.com/ncw/rclone/fs"
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"github.com/ncw/rclone/fs/config"
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"github.com/ncw/rclone/fs/config/configmap"
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"github.com/ncw/rclone/fs/config/configstruct"
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"github.com/ncw/rclone/fs/config/obscure"
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"github.com/ncw/rclone/fs/fshttp"
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"github.com/ncw/rclone/fs/hash"
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"github.com/ncw/rclone/lib/oauthutil"
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"github.com/ncw/rclone/lib/readers"
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"github.com/pkg/errors"
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"golang.org/x/oauth2"
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)
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//oAuth
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const (
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rcloneClientID = "ac39b43b9eba4cae8ffb788c06d816a8"
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rcloneEncryptedClientSecret = "EfyyNZ3YUEwXM5yAhi72G9YwKn2mkFrYwJNS7cY0TJAhFlX9K-uJFbGlpO-RYjrJ"
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)
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// Globals
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var (
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// Description of how to auth for this app
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oauthConfig = &oauth2.Config{
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Endpoint: oauth2.Endpoint{
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AuthURL: "https://oauth.yandex.com/authorize", //same as https://oauth.yandex.ru/authorize
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TokenURL: "https://oauth.yandex.com/token", //same as https://oauth.yandex.ru/token
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},
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ClientID: rcloneClientID,
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ClientSecret: obscure.MustReveal(rcloneEncryptedClientSecret),
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RedirectURL: oauthutil.RedirectURL,
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}
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)
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// Register with Fs
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func init() {
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fs.Register(&fs.RegInfo{
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Name: "yandex",
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Description: "Yandex Disk",
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NewFs: NewFs,
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Config: func(name string, m configmap.Mapper) {
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err := oauthutil.Config("yandex", name, m, oauthConfig)
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if err != nil {
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log.Fatalf("Failed to configure token: %v", err)
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}
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},
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Options: []fs.Option{{
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Name: config.ConfigClientID,
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Help: "Yandex Client Id\nLeave blank normally.",
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}, {
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Name: config.ConfigClientSecret,
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Help: "Yandex Client Secret\nLeave blank normally.",
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}},
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})
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}
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// Options defines the configuration for this backend
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type Options struct {
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Token string `config:"token"`
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}
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// Fs represents a remote yandex
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type Fs struct {
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name string
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root string // root path
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opt Options // parsed options
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features *fs.Features // optional features
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yd *yandex.Client // client for rest api
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diskRoot string // root path with "disk:/" container name
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}
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// Object describes a swift object
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type Object struct {
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fs *Fs // what this object is part of
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remote string // The remote path
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md5sum string // The MD5Sum of the object
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bytes uint64 // Bytes in the object
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modTime time.Time // Modified time of the object
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mimeType string // Content type according to the server
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}
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// ------------------------------------------------------------
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// Name of the remote (as passed into NewFs)
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func (f *Fs) Name() string {
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return f.name
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}
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// Root of the remote (as passed into NewFs)
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func (f *Fs) Root() string {
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return f.root
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}
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// String converts this Fs to a string
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func (f *Fs) String() string {
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return fmt.Sprintf("Yandex %s", f.root)
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}
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// Features returns the optional features of this Fs
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func (f *Fs) Features() *fs.Features {
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return f.features
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}
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// read access token from ConfigFile string
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func getAccessToken(opt *Options) (*oauth2.Token, error) {
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//Get access token from config string
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decoder := json.NewDecoder(strings.NewReader(opt.Token))
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var result *oauth2.Token
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err := decoder.Decode(&result)
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if err != nil {
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return nil, err
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}
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return result, nil
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}
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// NewFs constructs an Fs from the path, container:path
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func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
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// Parse config into Options struct
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opt := new(Options)
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err := configstruct.Set(m, opt)
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if err != nil {
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return nil, err
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}
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//read access token from config
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token, err := getAccessToken(opt)
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if err != nil {
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return nil, err
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}
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//create new client
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yandexDisk := yandex.NewClient(token.AccessToken, fshttp.NewClient(fs.Config))
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f := &Fs{
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name: name,
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opt: *opt,
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yd: yandexDisk,
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}
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f.features = (&fs.Features{
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ReadMimeType: true,
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WriteMimeType: true,
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CanHaveEmptyDirectories: true,
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}).Fill(f)
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f.setRoot(root)
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// Check to see if the object exists and is a file
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//request object meta info
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var opt2 yandex.ResourceInfoRequestOptions
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if ResourceInfoResponse, err := yandexDisk.NewResourceInfoRequest(root, opt2).Exec(); err != nil {
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//return err
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} else {
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if ResourceInfoResponse.ResourceType == "file" {
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f.setRoot(path.Dir(root))
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// return an error with an fs which points to the parent
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return f, fs.ErrorIsFile
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}
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}
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return f, nil
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}
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// Sets root in f
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func (f *Fs) setRoot(root string) {
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//Set root path
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f.root = strings.Trim(root, "/")
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//Set disk root path.
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//Adding "disk:" to root path as all paths on disk start with it
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var diskRoot string
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if f.root == "" {
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diskRoot = "disk:/"
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} else {
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diskRoot = "disk:/" + f.root + "/"
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}
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f.diskRoot = diskRoot
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}
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// Convert a list item into a DirEntry
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func (f *Fs) itemToDirEntry(remote string, object *yandex.ResourceInfoResponse) (fs.DirEntry, error) {
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switch object.ResourceType {
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case "dir":
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t, err := time.Parse(time.RFC3339Nano, object.Modified)
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if err != nil {
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return nil, errors.Wrap(err, "error parsing time in directory item")
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}
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d := fs.NewDir(remote, t).SetSize(int64(object.Size))
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return d, nil
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case "file":
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o, err := f.newObjectWithInfo(remote, object)
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if err != nil {
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return nil, err
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}
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return o, nil
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default:
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fs.Debugf(f, "Unknown resource type %q", object.ResourceType)
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}
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return nil, nil
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}
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// List the objects and directories in dir into entries. The
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// entries can be returned in any order but should be for a
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// complete directory.
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//
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// dir should be "" to list the root, and should not have
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// trailing slashes.
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//
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// This should return ErrDirNotFound if the directory isn't
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// found.
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func (f *Fs) List(dir string) (entries fs.DirEntries, err error) {
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//request object meta info
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var opt yandex.ResourceInfoRequestOptions
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root := f.diskRoot
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if dir != "" {
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root += dir + "/"
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}
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var limit uint32 = 1000 // max number of object per request
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var itemsCount uint32 //number of items per page in response
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var offset uint32 //for the next page of request
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opt.Limit = &limit
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opt.Offset = &offset
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//query each page of list until itemCount is less then limit
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for {
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ResourceInfoResponse, err := f.yd.NewResourceInfoRequest(root, opt).Exec()
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if err != nil {
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yErr, ok := err.(yandex.DiskClientError)
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if ok && yErr.Code == "DiskNotFoundError" {
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return nil, fs.ErrorDirNotFound
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}
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return nil, err
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}
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itemsCount = uint32(len(ResourceInfoResponse.Embedded.Items))
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if ResourceInfoResponse.ResourceType == "dir" {
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//list all subdirs
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for _, element := range ResourceInfoResponse.Embedded.Items {
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remote := path.Join(dir, element.Name)
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entry, err := f.itemToDirEntry(remote, &element)
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if err != nil {
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return nil, err
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}
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if entry != nil {
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entries = append(entries, entry)
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}
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}
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}
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//offset for the next page of items
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offset += itemsCount
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//check if we reached end of list
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if itemsCount < limit {
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break
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}
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}
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return entries, nil
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}
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// ListR lists the objects and directories of the Fs starting
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// from dir recursively into out.
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//
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// dir should be "" to start from the root, and should not
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// have trailing slashes.
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//
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// This should return ErrDirNotFound if the directory isn't
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// found.
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//
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// It should call callback for each tranche of entries read.
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// These need not be returned in any particular order. If
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// callback returns an error then the listing will stop
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// immediately.
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//
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// Don't implement this unless you have a more efficient way
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// of listing recursively that doing a directory traversal.
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func (f *Fs) ListR(dir string, callback fs.ListRCallback) (err error) {
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//request files list. list is divided into pages. We send request for each page
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//items per page is limited by limit
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//TODO may be add config parameter for the items per page limit
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var limit uint32 = 1000 // max number of object per request
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var itemsCount uint32 //number of items per page in response
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var offset uint32 //for the next page of request
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// yandex disk api request options
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var opt yandex.FlatFileListRequestOptions
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opt.Limit = &limit
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opt.Offset = &offset
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prefix := f.diskRoot
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if dir != "" {
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prefix += dir + "/"
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}
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//query each page of list until itemCount is less then limit
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for {
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//send request
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info, err := f.yd.NewFlatFileListRequest(opt).Exec()
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if err != nil {
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yErr, ok := err.(yandex.DiskClientError)
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if ok && yErr.Code == "DiskNotFoundError" {
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return fs.ErrorDirNotFound
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}
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return err
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}
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itemsCount = uint32(len(info.Items))
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//list files
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entries := make(fs.DirEntries, 0, len(info.Items))
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for _, item := range info.Items {
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// filter file list and get only files we need
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if strings.HasPrefix(item.Path, prefix) {
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//trim root folder from filename
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var name = strings.TrimPrefix(item.Path, f.diskRoot)
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entry, err := f.itemToDirEntry(name, &item)
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if err != nil {
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return err
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}
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if entry != nil {
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entries = append(entries, entry)
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}
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}
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}
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// send the listing
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err = callback(entries)
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if err != nil {
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return err
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}
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//offset for the next page of items
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offset += itemsCount
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//check if we reached end of list
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if itemsCount < limit {
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break
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}
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}
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return nil
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}
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// NewObject finds the Object at remote. If it can't be found it
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// returns the error fs.ErrorObjectNotFound.
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func (f *Fs) NewObject(remote string) (fs.Object, error) {
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return f.newObjectWithInfo(remote, nil)
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}
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// Return an Object from a path
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//
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// If it can't be found it returns the error fs.ErrorObjectNotFound.
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func (f *Fs) newObjectWithInfo(remote string, info *yandex.ResourceInfoResponse) (fs.Object, error) {
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o := &Object{
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fs: f,
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remote: remote,
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}
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var err error
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if info != nil {
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err = o.setMetaData(info)
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} else {
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err = o.readMetaData()
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}
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if err != nil {
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return nil, err
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}
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return o, nil
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}
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// setMetaData sets the fs data from a storage.Object
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func (o *Object) setMetaData(info *yandex.ResourceInfoResponse) (err error) {
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if info.ResourceType != "file" {
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return errors.Wrapf(fs.ErrorNotAFile, "%q", o.remote)
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}
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o.bytes = info.Size
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o.md5sum = info.Md5
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o.mimeType = info.MimeType
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var modTimeString string
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modTimeObj, ok := info.CustomProperties["rclone_modified"]
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if ok {
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// read modTime from rclone_modified custom_property of object
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modTimeString, ok = modTimeObj.(string)
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}
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if !ok {
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// read modTime from Modified property of object as a fallback
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modTimeString = info.Modified
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}
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t, err := time.Parse(time.RFC3339Nano, modTimeString)
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if err != nil {
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return errors.Wrapf(err, "failed to parse modtime from %q", modTimeString)
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}
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o.modTime = t
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return nil
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}
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// readMetaData gets the info if it hasn't already been fetched
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func (o *Object) readMetaData() (err error) {
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// exit if already fetched
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if !o.modTime.IsZero() {
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return nil
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}
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//request meta info
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var opt2 yandex.ResourceInfoRequestOptions
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ResourceInfoResponse, err := o.fs.yd.NewResourceInfoRequest(o.remotePath(), opt2).Exec()
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if err != nil {
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if dcErr, ok := err.(yandex.DiskClientError); ok {
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if dcErr.Code == "DiskNotFoundError" {
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return fs.ErrorObjectNotFound
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}
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}
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return err
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}
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return o.setMetaData(ResourceInfoResponse)
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}
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// Put the object
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//
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// Copy the reader in to the new object which is returned
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//
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// The new object may have been created if an error is returned
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func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
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remote := src.Remote()
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size := src.Size()
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modTime := src.ModTime()
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o := &Object{
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fs: f,
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remote: remote,
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bytes: uint64(size),
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modTime: modTime,
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}
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//TODO maybe read metadata after upload to check if file uploaded successfully
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return o, o.Update(in, src, options...)
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}
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// PutStream uploads to the remote path with the modTime given of indeterminate size
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func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
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return f.Put(in, src, options...)
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}
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// Mkdir creates the container if it doesn't exist
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func (f *Fs) Mkdir(dir string) error {
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root := f.diskRoot
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if dir != "" {
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root += dir + "/"
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}
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return mkDirFullPath(f.yd, root)
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}
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// Rmdir deletes the container
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//
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// Returns an error if it isn't empty
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func (f *Fs) Rmdir(dir string) error {
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return f.purgeCheck(dir, true)
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}
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// purgeCheck remotes the root directory, if check is set then it
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// refuses to do so if it has anything in
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func (f *Fs) purgeCheck(dir string, check bool) error {
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root := f.diskRoot
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if dir != "" {
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root += dir + "/"
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}
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if check {
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//to comply with rclone logic we check if the directory is empty before delete.
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//send request to get list of objects in this directory.
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var opt yandex.ResourceInfoRequestOptions
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ResourceInfoResponse, err := f.yd.NewResourceInfoRequest(root, opt).Exec()
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if err != nil {
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return errors.Wrap(err, "rmdir failed")
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}
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if len(ResourceInfoResponse.Embedded.Items) != 0 {
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return errors.New("rmdir failed: directory not empty")
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}
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}
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//delete directory
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return f.yd.Delete(root, true)
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}
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// Precision return the precision of this Fs
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func (f *Fs) Precision() time.Duration {
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return time.Nanosecond
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}
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// Purge deletes all the files and the container
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//
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// Optional interface: Only implement this if you have a way of
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// deleting all the files quicker than just running Remove() on the
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// result of List()
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func (f *Fs) Purge() error {
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return f.purgeCheck("", false)
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}
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// CleanUp permanently deletes all trashed files/folders
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func (f *Fs) CleanUp() error {
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return f.yd.EmptyTrash()
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}
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// Hashes returns the supported hash sets.
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func (f *Fs) Hashes() hash.Set {
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return hash.Set(hash.MD5)
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}
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// ------------------------------------------------------------
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// Fs returns the parent Fs
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func (o *Object) Fs() fs.Info {
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return o.fs
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}
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// Return a string version
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func (o *Object) String() string {
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if o == nil {
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return "<nil>"
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}
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return o.remote
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}
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// Remote returns the remote path
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func (o *Object) Remote() string {
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return o.remote
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}
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// Hash returns the Md5sum of an object returning a lowercase hex string
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func (o *Object) Hash(t hash.Type) (string, error) {
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if t != hash.MD5 {
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return "", hash.ErrUnsupported
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}
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return o.md5sum, nil
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}
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|
|
// Size returns the size of an object in bytes
|
|
func (o *Object) Size() int64 {
|
|
var size = int64(o.bytes) //need to cast from uint64 in yandex disk to int64 in rclone. can cause overflow
|
|
return size
|
|
}
|
|
|
|
// ModTime returns the modification time of the object
|
|
//
|
|
// It attempts to read the objects mtime and if that isn't present the
|
|
// LastModified returned in the http headers
|
|
func (o *Object) ModTime() time.Time {
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
fs.Logf(o, "Failed to read metadata: %v", err)
|
|
return time.Now()
|
|
}
|
|
return o.modTime
|
|
}
|
|
|
|
// Open an object for read
|
|
func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error) {
|
|
return o.fs.yd.Download(o.remotePath(), fs.OpenOptionHeaders(options))
|
|
}
|
|
|
|
// Remove an object
|
|
func (o *Object) Remove() error {
|
|
return o.fs.yd.Delete(o.remotePath(), true)
|
|
}
|
|
|
|
// SetModTime sets the modification time of the local fs object
|
|
//
|
|
// Commits the datastore
|
|
func (o *Object) SetModTime(modTime time.Time) error {
|
|
remote := o.remotePath()
|
|
// set custom_property 'rclone_modified' of object to modTime
|
|
err := o.fs.yd.SetCustomProperty(remote, "rclone_modified", modTime.Format(time.RFC3339Nano))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
o.modTime = modTime
|
|
return nil
|
|
}
|
|
|
|
// Storable returns whether this object is storable
|
|
func (o *Object) Storable() bool {
|
|
return true
|
|
}
|
|
|
|
// Returns the remote path for the object
|
|
func (o *Object) remotePath() string {
|
|
return o.fs.diskRoot + o.remote
|
|
}
|
|
|
|
// Update the already existing object
|
|
//
|
|
// Copy the reader into the object updating modTime and size
|
|
//
|
|
// The new object may have been created if an error is returned
|
|
func (o *Object) Update(in0 io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
|
|
in := readers.NewCountingReader(in0)
|
|
modTime := src.ModTime()
|
|
|
|
remote := o.remotePath()
|
|
//create full path to file before upload.
|
|
err1 := mkDirFullPath(o.fs.yd, remote)
|
|
if err1 != nil {
|
|
return err1
|
|
}
|
|
//upload file
|
|
overwrite := true //overwrite existing file
|
|
mimeType := fs.MimeType(src)
|
|
err := o.fs.yd.Upload(in, remote, overwrite, mimeType)
|
|
if err == nil {
|
|
//if file uploaded sucessfully then return metadata
|
|
o.bytes = in.BytesRead()
|
|
o.modTime = modTime
|
|
o.md5sum = "" // according to unit tests after put the md5 is empty.
|
|
//and set modTime of uploaded file
|
|
err = o.SetModTime(modTime)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// utility funcs-------------------------------------------------------------------
|
|
|
|
// mkDirExecute execute mkdir
|
|
func mkDirExecute(client *yandex.Client, path string) (int, string, error) {
|
|
statusCode, jsonErrorString, err := client.Mkdir(path)
|
|
if statusCode == 409 { // dir already exist
|
|
return statusCode, jsonErrorString, err
|
|
}
|
|
if statusCode == 201 { // dir was created
|
|
return statusCode, jsonErrorString, err
|
|
}
|
|
if err != nil {
|
|
// error creating directory
|
|
return statusCode, jsonErrorString, errors.Wrap(err, "failed to create folder")
|
|
}
|
|
return 0, "", nil
|
|
}
|
|
|
|
//mkDirFullPath Creates Each Directory in the path if needed. Send request once for every directory in the path.
|
|
func mkDirFullPath(client *yandex.Client, path string) error {
|
|
//trim filename from path
|
|
dirString := strings.TrimSuffix(path, filepath.Base(path))
|
|
//trim "disk:/" from path
|
|
dirString = strings.TrimPrefix(dirString, "disk:/")
|
|
|
|
//1 Try to create directory first
|
|
if _, jsonErrorString, err := mkDirExecute(client, dirString); err != nil {
|
|
er2, _ := client.ParseAPIError(jsonErrorString)
|
|
if er2 != "DiskPathPointsToExistentDirectoryError" {
|
|
//2 if it fails then create all directories in the path from root.
|
|
dirs := strings.Split(dirString, "/") //path separator /
|
|
var mkdirpath = "/" //path separator /
|
|
for _, element := range dirs {
|
|
if element != "" {
|
|
mkdirpath += element + "/" //path separator /
|
|
_, _, err2 := mkDirExecute(client, mkdirpath)
|
|
if err2 != nil {
|
|
//we continue even if some directories exist.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// MimeType of an Object if known, "" otherwise
|
|
func (o *Object) MimeType() string {
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
fs.Logf(o, "Failed to read metadata: %v", err)
|
|
return ""
|
|
}
|
|
return o.mimeType
|
|
}
|
|
|
|
// Check the interfaces are satisfied
|
|
var (
|
|
_ fs.Fs = (*Fs)(nil)
|
|
_ fs.Purger = (*Fs)(nil)
|
|
_ fs.CleanUpper = (*Fs)(nil)
|
|
_ fs.PutStreamer = (*Fs)(nil)
|
|
_ fs.ListRer = (*Fs)(nil)
|
|
//_ fs.Copier = (*Fs)(nil)
|
|
_ fs.ListRer = (*Fs)(nil)
|
|
_ fs.Object = (*Object)(nil)
|
|
_ fs.MimeTyper = &Object{}
|
|
)
|