forked from rclone/rclone
/
premiumizeme.go
1106 lines (1016 loc) · 29.5 KB
/
premiumizeme.go
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// Package premiumizeme provides an interface to the premiumize.me
// object storage system.
package premiumizeme
/*
Run of rclone info
stringNeedsEscaping = []rune{
0x00, 0x0A, 0x0D, 0x22, 0x2F, 0x5C, 0xBF, 0xFE
0x00, 0x0A, 0x0D, '"', '/', '\\', 0xBF, 0xFE
}
maxFileLength = 255
canWriteUnnormalized = true
canReadUnnormalized = true
canReadRenormalized = false
canStream = false
*/
import (
"context"
"encoding/json"
"fmt"
"io"
"log"
"net"
"net/http"
"net/url"
"path"
"strings"
"time"
"github.com/pkg/errors"
"github.com/rclone/rclone/backend/premiumizeme/api"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config"
"github.com/rclone/rclone/fs/config/configmap"
"github.com/rclone/rclone/fs/config/configstruct"
"github.com/rclone/rclone/fs/config/obscure"
"github.com/rclone/rclone/fs/fserrors"
"github.com/rclone/rclone/fs/fshttp"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/lib/dircache"
"github.com/rclone/rclone/lib/encoder"
"github.com/rclone/rclone/lib/oauthutil"
"github.com/rclone/rclone/lib/pacer"
"github.com/rclone/rclone/lib/random"
"github.com/rclone/rclone/lib/rest"
"golang.org/x/oauth2"
)
const (
rcloneClientID = "658922194"
rcloneEncryptedClientSecret = "B5YIvQoRIhcpAYs8HYeyjb9gK-ftmZEbqdh_gNfc4RgO9Q"
minSleep = 10 * time.Millisecond
maxSleep = 2 * time.Second
decayConstant = 2 // bigger for slower decay, exponential
rootID = "0" // ID of root folder is always this
rootURL = "https://www.premiumize.me/api"
)
// Globals
var (
// Description of how to auth for this app
oauthConfig = &oauth2.Config{
Scopes: nil,
Endpoint: oauth2.Endpoint{
AuthURL: "https://www.premiumize.me/authorize",
TokenURL: "https://www.premiumize.me/token",
},
ClientID: rcloneClientID,
ClientSecret: obscure.MustReveal(rcloneEncryptedClientSecret),
RedirectURL: oauthutil.RedirectURL,
}
)
// Register with Fs
func init() {
fs.Register(&fs.RegInfo{
Name: "premiumizeme",
Description: "premiumize.me",
NewFs: NewFs,
Config: func(name string, m configmap.Mapper) {
err := oauthutil.Config("premiumizeme", name, m, oauthConfig, nil)
if err != nil {
log.Fatalf("Failed to configure token: %v", err)
}
},
Options: []fs.Option{{
Name: "api_key",
Help: `API Key.
This is not normally used - use oauth instead.
`,
Hide: fs.OptionHideBoth,
Default: "",
}, {
Name: config.ConfigEncoding,
Help: config.ConfigEncodingHelp,
Advanced: true,
// Encode invalid UTF-8 bytes as json doesn't handle them properly.
Default: (encoder.Display |
encoder.EncodeBackSlash |
encoder.EncodeDoubleQuote |
encoder.EncodeInvalidUtf8),
}},
})
}
// Options defines the configuration for this backend
type Options struct {
APIKey string `config:"api_key"`
Enc encoder.MultiEncoder `config:"encoding"`
}
// Fs represents a remote cloud storage system
type Fs struct {
name string // name of this remote
root string // the path we are working on
opt Options // parsed options
features *fs.Features // optional features
srv *rest.Client // the connection to the server
dirCache *dircache.DirCache // Map of directory path to directory id
pacer *fs.Pacer // pacer for API calls
tokenRenewer *oauthutil.Renew // renew the token on expiry
}
// Object describes a file
type Object struct {
fs *Fs // what this object is part of
remote string // The remote path
hasMetaData bool // metadata is present and correct
size int64 // size of the object
modTime time.Time // modification time of the object
id string // ID of the object
parentID string // ID of parent directory
mimeType string // Mime type of object
url string // URL to download file
}
// ------------------------------------------------------------
// Name of the remote (as passed into NewFs)
func (f *Fs) Name() string {
return f.name
}
// Root of the remote (as passed into NewFs)
func (f *Fs) Root() string {
return f.root
}
// String converts this Fs to a string
func (f *Fs) String() string {
return fmt.Sprintf("premiumize.me root '%s'", f.root)
}
// Features returns the optional features of this Fs
func (f *Fs) Features() *fs.Features {
return f.features
}
// parsePath parses a premiumize.me 'url'
func parsePath(path string) (root string) {
root = strings.Trim(path, "/")
return
}
// retryErrorCodes is a slice of error codes that we will retry
var retryErrorCodes = []int{
429, // Too Many Requests.
500, // Internal Server Error
502, // Bad Gateway
503, // Service Unavailable
504, // Gateway Timeout
509, // Bandwidth Limit Exceeded
}
// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func shouldRetry(resp *http.Response, err error) (bool, error) {
return fserrors.ShouldRetry(err) || fserrors.ShouldRetryHTTP(resp, retryErrorCodes), err
}
// readMetaDataForPath reads the metadata from the path
func (f *Fs) readMetaDataForPath(ctx context.Context, path string, directoriesOnly bool, filesOnly bool) (info *api.Item, err error) {
// defer fs.Trace(f, "path=%q", path)("info=%+v, err=%v", &info, &err)
leaf, directoryID, err := f.dirCache.FindPath(ctx, path, false)
if err != nil {
if err == fs.ErrorDirNotFound {
return nil, fs.ErrorObjectNotFound
}
return nil, err
}
lcLeaf := strings.ToLower(leaf)
found, err := f.listAll(ctx, directoryID, directoriesOnly, filesOnly, func(item *api.Item) bool {
if strings.ToLower(item.Name) == lcLeaf {
info = item
return true
}
return false
})
if err != nil {
return nil, err
}
if !found {
return nil, fs.ErrorObjectNotFound
}
return info, nil
}
// errorHandler parses a non 2xx error response into an error
func errorHandler(resp *http.Response) error {
body, err := rest.ReadBody(resp)
if err != nil {
body = nil
}
var e = api.Response{
Message: string(body),
Status: fmt.Sprintf("%s (%d)", resp.Status, resp.StatusCode),
}
if body != nil {
_ = json.Unmarshal(body, &e)
}
return &e
}
// Return a url.Values with the api key in
func (f *Fs) baseParams() url.Values {
params := url.Values{}
if f.opt.APIKey != "" {
params.Add("apikey", f.opt.APIKey)
}
return params
}
// NewFs constructs an Fs from the path, container:path
func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
ctx := context.Background()
// Parse config into Options struct
opt := new(Options)
err := configstruct.Set(m, opt)
if err != nil {
return nil, err
}
root = parsePath(root)
var client *http.Client
var ts *oauthutil.TokenSource
if opt.APIKey == "" {
client, ts, err = oauthutil.NewClient(name, m, oauthConfig)
if err != nil {
return nil, errors.Wrap(err, "failed to configure premiumize.me")
}
} else {
client = fshttp.NewClient(fs.Config)
}
f := &Fs{
name: name,
root: root,
opt: *opt,
srv: rest.NewClient(client).SetRoot(rootURL),
pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
}
f.features = (&fs.Features{
CaseInsensitive: true,
CanHaveEmptyDirectories: true,
ReadMimeType: true,
}).Fill(f)
f.srv.SetErrorHandler(errorHandler)
// Renew the token in the background
if ts != nil {
f.tokenRenewer = oauthutil.NewRenew(f.String(), ts, func() error {
_, err := f.About(ctx)
return err
})
}
// Get rootID
f.dirCache = dircache.New(root, rootID, f)
// Find the current root
err = f.dirCache.FindRoot(ctx, false)
if err != nil {
// Assume it is a file
newRoot, remote := dircache.SplitPath(root)
tempF := *f
tempF.dirCache = dircache.New(newRoot, rootID, &tempF)
tempF.root = newRoot
// Make new Fs which is the parent
err = tempF.dirCache.FindRoot(ctx, false)
if err != nil {
// No root so return old f
return f, nil
}
_, err := tempF.newObjectWithInfo(ctx, remote, nil)
if err != nil {
if err == fs.ErrorObjectNotFound {
// File doesn't exist so return old f
return f, nil
}
return nil, err
}
f.features.Fill(&tempF)
// XXX: update the old f here instead of returning tempF, since
// `features` were already filled with functions having *f as a receiver.
// See https://github.com/rclone/rclone/issues/2182
f.dirCache = tempF.dirCache
f.root = tempF.root
// return an error with an fs which points to the parent
return f, fs.ErrorIsFile
}
return f, nil
}
// Return an Object from a path
//
// If it can't be found it returns the error fs.ErrorObjectNotFound.
func (f *Fs) newObjectWithInfo(ctx context.Context, remote string, info *api.Item) (fs.Object, error) {
o := &Object{
fs: f,
remote: remote,
}
var err error
if info != nil {
// Set info
err = o.setMetaData(info)
} else {
err = o.readMetaData(ctx) // reads info and meta, returning an error
}
if err != nil {
return nil, err
}
return o, nil
}
// NewObject finds the Object at remote. If it can't be found
// it returns the error fs.ErrorObjectNotFound.
func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
return f.newObjectWithInfo(ctx, remote, nil)
}
// FindLeaf finds a directory of name leaf in the folder with ID pathID
func (f *Fs) FindLeaf(ctx context.Context, pathID, leaf string) (pathIDOut string, found bool, err error) {
// Find the leaf in pathID
found, err = f.listAll(ctx, pathID, true, false, func(item *api.Item) bool {
if item.Name == leaf {
pathIDOut = item.ID
return true
}
return false
})
return pathIDOut, found, err
}
// CreateDir makes a directory with pathID as parent and name leaf
func (f *Fs) CreateDir(ctx context.Context, pathID, leaf string) (newID string, err error) {
// fs.Debugf(f, "CreateDir(%q, %q)\n", pathID, leaf)
var resp *http.Response
var info api.FolderCreateResponse
opts := rest.Opts{
Method: "POST",
Path: "/folder/create",
Parameters: f.baseParams(),
MultipartParams: url.Values{
"name": {f.opt.Enc.FromStandardName(leaf)},
"parent_id": {pathID},
},
}
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &info)
return shouldRetry(resp, err)
})
if err != nil {
//fmt.Printf("...Error %v\n", err)
return "", errors.Wrap(err, "CreateDir http")
}
if err = info.AsErr(); err != nil {
return "", errors.Wrap(err, "CreateDir")
}
// fmt.Printf("...Id %q\n", *info.Id)
return info.ID, nil
}
// list the objects into the function supplied
//
// If directories is set it only sends directories
// User function to process a File item from listAll
//
// Should return true to finish processing
type listAllFn func(*api.Item) bool
// Lists the directory required calling the user function on each item found
//
// If the user fn ever returns true then it early exits with found = true
func (f *Fs) listAll(ctx context.Context, dirID string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/folder/list",
Parameters: f.baseParams(),
}
opts.Parameters.Set("id", dirID)
opts.Parameters.Set("includebreadcrumbs", "false")
var result api.FolderListResponse
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
})
if err != nil {
return found, errors.Wrap(err, "couldn't list files")
}
if err = result.AsErr(); err != nil {
return found, errors.Wrap(err, "error while listing")
}
for i := range result.Content {
item := &result.Content[i]
if item.Type == api.ItemTypeFolder {
if filesOnly {
continue
}
} else if item.Type == api.ItemTypeFile {
if directoriesOnly {
continue
}
} else {
fs.Debugf(f, "Ignoring %q - unknown type %q", item.Name, item.Type)
continue
}
item.Name = f.opt.Enc.ToStandardName(item.Name)
if fn(item) {
found = true
break
}
}
return
}
// List the objects and directories in dir into entries. The
// entries can be returned in any order but should be for a
// complete directory.
//
// dir should be "" to list the root, and should not have
// trailing slashes.
//
// This should return ErrDirNotFound if the directory isn't
// found.
func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err error) {
directoryID, err := f.dirCache.FindDir(ctx, dir, false)
if err != nil {
return nil, err
}
var iErr error
_, err = f.listAll(ctx, directoryID, false, false, func(info *api.Item) bool {
remote := path.Join(dir, info.Name)
if info.Type == api.ItemTypeFolder {
// cache the directory ID for later lookups
f.dirCache.Put(remote, info.ID)
d := fs.NewDir(remote, time.Unix(info.CreatedAt, 0)).SetID(info.ID)
entries = append(entries, d)
} else if info.Type == api.ItemTypeFile {
o, err := f.newObjectWithInfo(ctx, remote, info)
if err != nil {
iErr = err
return true
}
entries = append(entries, o)
}
return false
})
if err != nil {
return nil, err
}
if iErr != nil {
return nil, iErr
}
return entries, nil
}
// Creates from the parameters passed in a half finished Object which
// must have setMetaData called on it
//
// Returns the object, leaf, directoryID and error
//
// Used to create new objects
func (f *Fs) createObject(ctx context.Context, remote string, modTime time.Time, size int64) (o *Object, leaf string, directoryID string, err error) {
// Create the directory for the object if it doesn't exist
leaf, directoryID, err = f.dirCache.FindPath(ctx, remote, true)
if err != nil {
return
}
// Temporary Object under construction
o = &Object{
fs: f,
remote: remote,
}
return o, leaf, directoryID, nil
}
// Put the object
//
// Copy the reader in to the new object which is returned
//
// The new object may have been created if an error is returned
func (f *Fs) Put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
existingObj, err := f.newObjectWithInfo(ctx, src.Remote(), nil)
switch err {
case nil:
return existingObj, existingObj.Update(ctx, in, src, options...)
case fs.ErrorObjectNotFound:
// Not found so create it
return f.PutUnchecked(ctx, in, src, options...)
default:
return nil, err
}
}
// PutUnchecked the object into the container
//
// This will produce an error if the object already exists
//
// Copy the reader in to the new object which is returned
//
// The new object may have been created if an error is returned
func (f *Fs) PutUnchecked(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
remote := src.Remote()
size := src.Size()
modTime := src.ModTime(ctx)
o, _, _, err := f.createObject(ctx, remote, modTime, size)
if err != nil {
return nil, err
}
return o, o.Update(ctx, in, src, options...)
}
// Mkdir creates the container if it doesn't exist
func (f *Fs) Mkdir(ctx context.Context, dir string) error {
_, err := f.dirCache.FindDir(ctx, dir, true)
return err
}
// purgeCheck removes the root directory, if check is set then it
// refuses to do so if it has anything in
func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
root := path.Join(f.root, dir)
if root == "" {
return errors.New("can't purge root directory")
}
dc := f.dirCache
rootID, err := dc.FindDir(ctx, dir, false)
if err != nil {
return err
}
// need to check if empty as it will delete recursively by default
if check {
found, err := f.listAll(ctx, rootID, false, false, func(item *api.Item) bool {
return true
})
if err != nil {
return errors.Wrap(err, "purgeCheck")
}
if found {
return fs.ErrorDirectoryNotEmpty
}
}
opts := rest.Opts{
Method: "POST",
Path: "/folder/delete",
MultipartParams: url.Values{
"id": {rootID},
},
Parameters: f.baseParams(),
}
var resp *http.Response
var result api.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
})
if err != nil {
return errors.Wrap(err, "rmdir failed")
}
if err = result.AsErr(); err != nil {
return errors.Wrap(err, "rmdir")
}
f.dirCache.FlushDir(dir)
if err != nil {
return err
}
return nil
}
// Rmdir deletes the root folder
//
// Returns an error if it isn't empty
func (f *Fs) Rmdir(ctx context.Context, dir string) error {
return f.purgeCheck(ctx, dir, true)
}
// Precision return the precision of this Fs
func (f *Fs) Precision() time.Duration {
return fs.ModTimeNotSupported
}
// Purge deletes all the files and the container
//
// Optional interface: Only implement this if you have a way of
// deleting all the files quicker than just running Remove() on the
// result of List()
func (f *Fs) Purge(ctx context.Context) error {
return f.purgeCheck(ctx, "", false)
}
// move a file or folder
//
// This is complicated by the fact that there is an API to move files
// between directories and a separate one to rename them. We try to
// call the minimum number of API calls.
func (f *Fs) move(ctx context.Context, isFile bool, id, oldLeaf, newLeaf, oldDirectoryID, newDirectoryID string) (err error) {
newLeaf = f.opt.Enc.FromStandardName(newLeaf)
oldLeaf = f.opt.Enc.FromStandardName(oldLeaf)
doRenameLeaf := oldLeaf != newLeaf
doMove := oldDirectoryID != newDirectoryID
// Now rename the leaf to a temporary name if we are moving to
// another directory to make sure we don't overwrite something
// in the destination directory by accident
if doRenameLeaf && doMove {
tmpLeaf := newLeaf + "." + random.String(8)
err = f.renameLeaf(ctx, isFile, id, tmpLeaf)
if err != nil {
return errors.Wrap(err, "Move rename leaf")
}
}
// Move the object to a new directory (with the existing name)
// if required
if doMove {
opts := rest.Opts{
Method: "POST",
Path: "/folder/paste",
Parameters: f.baseParams(),
MultipartParams: url.Values{
"id": {newDirectoryID},
},
}
if isFile {
opts.MultipartParams.Set("files[]", id)
} else {
opts.MultipartParams.Set("folders[]", id)
}
//replacedLeaf := enc.FromStandardName(leaf)
var resp *http.Response
var result api.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
})
if err != nil {
return errors.Wrap(err, "Move http")
}
if err = result.AsErr(); err != nil {
return errors.Wrap(err, "Move")
}
}
// Rename the leaf to its final name if required
if doRenameLeaf {
err = f.renameLeaf(ctx, isFile, id, newLeaf)
if err != nil {
return errors.Wrap(err, "Move rename leaf")
}
}
return nil
}
// Move src to this remote using server side move operations.
//
// This is stored with the remote path given
//
// It returns the destination Object and a possible error
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantMove
func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
srcObj, ok := src.(*Object)
if !ok {
fs.Debugf(src, "Can't move - not same remote type")
return nil, fs.ErrorCantMove
}
// Create temporary object
dstObj, leaf, directoryID, err := f.createObject(ctx, remote, srcObj.modTime, srcObj.size)
if err != nil {
return nil, err
}
// Do the move
err = f.move(ctx, true, srcObj.id, path.Base(srcObj.remote), leaf, srcObj.parentID, directoryID)
if err != nil {
return nil, err
}
err = dstObj.readMetaData(ctx)
if err != nil {
return nil, err
}
return dstObj, nil
}
// DirMove moves src, srcRemote to this remote at dstRemote
// using server side move operations.
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantDirMove
//
// If destination exists then return fs.ErrorDirExists
func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string) error {
srcFs, ok := src.(*Fs)
if !ok {
fs.Debugf(srcFs, "Can't move directory - not same remote type")
return fs.ErrorCantDirMove
}
srcID, srcDirectoryID, srcLeaf, dstDirectoryID, dstLeaf, err := f.dirCache.DirMove(ctx, srcFs.dirCache, srcFs.root, srcRemote, f.root, dstRemote)
if err != nil {
return err
}
// Do the move
err = f.move(ctx, false, srcID, srcLeaf, dstLeaf, srcDirectoryID, dstDirectoryID)
if err != nil {
return err
}
srcFs.dirCache.FlushDir(srcRemote)
return nil
}
// PublicLink adds a "readable by anyone with link" permission on the given file or folder.
func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration, unlink bool) (string, error) {
_, err := f.dirCache.FindDir(ctx, remote, false)
if err == nil {
return "", fs.ErrorCantShareDirectories
}
o, err := f.NewObject(ctx, remote)
if err != nil {
return "", err
}
return o.(*Object).url, nil
}
// About gets quota information
func (f *Fs) About(ctx context.Context) (usage *fs.Usage, err error) {
var resp *http.Response
var info api.AccountInfoResponse
opts := rest.Opts{
Method: "POST",
Path: "/account/info",
Parameters: f.baseParams(),
}
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &info)
return shouldRetry(resp, err)
})
if err != nil {
return nil, errors.Wrap(err, "CreateDir http")
}
if err = info.AsErr(); err != nil {
return nil, errors.Wrap(err, "CreateDir")
}
usage = &fs.Usage{
Used: fs.NewUsageValue(int64(info.SpaceUsed)),
}
return usage, nil
}
// DirCacheFlush resets the directory cache - used in testing as an
// optional interface
func (f *Fs) DirCacheFlush() {
f.dirCache.ResetRoot()
}
// Hashes returns the supported hash sets.
func (f *Fs) Hashes() hash.Set {
return hash.Set(hash.None)
}
// ------------------------------------------------------------
// Fs returns the parent Fs
func (o *Object) Fs() fs.Info {
return o.fs
}
// Return a string version
func (o *Object) String() string {
if o == nil {
return "<nil>"
}
return o.remote
}
// Remote returns the remote path
func (o *Object) Remote() string {
return o.remote
}
// Hash returns the SHA-1 of an object returning a lowercase hex string
func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
return "", hash.ErrUnsupported
}
// Size returns the size of an object in bytes
func (o *Object) Size() int64 {
err := o.readMetaData(context.TODO())
if err != nil {
fs.Logf(o, "Failed to read metadata: %v", err)
return 0
}
return o.size
}
// setMetaData sets the metadata from info
func (o *Object) setMetaData(info *api.Item) (err error) {
if info.Type != "file" {
return errors.Wrapf(fs.ErrorNotAFile, "%q is %q", o.remote, info.Type)
}
o.hasMetaData = true
o.size = info.Size
o.modTime = time.Unix(info.CreatedAt, 0)
o.id = info.ID
o.mimeType = info.MimeType
o.url = info.Link
return nil
}
// readMetaData gets the metadata if it hasn't already been fetched
//
// it also sets the info
func (o *Object) readMetaData(ctx context.Context) (err error) {
if o.hasMetaData {
return nil
}
info, err := o.fs.readMetaDataForPath(ctx, o.remote, false, true)
if err != nil {
return err
}
return o.setMetaData(info)
}
// 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(ctx context.Context) time.Time {
err := o.readMetaData(ctx)
if err != nil {
fs.Logf(o, "Failed to read metadata: %v", err)
return time.Now()
}
return o.modTime
}
// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(ctx context.Context, modTime time.Time) error {
return fs.ErrorCantSetModTime
}
// Storable returns a boolean showing whether this object storable
func (o *Object) Storable() bool {
return true
}
// Open an object for read
func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.ReadCloser, err error) {
if o.url == "" {
return nil, errors.New("can't download - no URL")
}
fs.FixRangeOption(options, o.size)
var resp *http.Response
opts := rest.Opts{
Path: "",
RootURL: o.url,
Method: "GET",
Options: options,
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.Call(ctx, &opts)
return shouldRetry(resp, err)
})
if err != nil {
return nil, err
}
return resp.Body, err
}
// Update the object with the contents of the io.Reader, modTime and size
//
// If existing is set then it updates the object rather than creating a new one
//
// The new object may have been created if an error is returned
func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error) {
remote := o.Remote()
size := src.Size()
// Create the directory for the object if it doesn't exist
leaf, directoryID, err := o.fs.dirCache.FindPath(ctx, remote, true)
if err != nil {
return err
}
leaf = o.fs.opt.Enc.FromStandardName(leaf)
var resp *http.Response
var info api.FolderUploadinfoResponse
opts := rest.Opts{
Method: "POST",
Path: "/folder/uploadinfo",
Parameters: o.fs.baseParams(),
Options: options,
MultipartParams: url.Values{
"id": {directoryID},
},
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, nil, &info)
if err != nil {
return shouldRetry(resp, err)
}
// Just check the download URL resolves - sometimes
// the URLs returned by premiumize.me don't resolve so
// this needs a retry.
var u *url.URL
u, err = url.Parse(info.URL)
if err != nil {
return true, errors.Wrap(err, "failed to parse download URL")
}
_, err = net.LookupIP(u.Hostname())
if err != nil {
return true, errors.Wrap(err, "failed to resolve download URL")
}
return false, nil
})
if err != nil {
return errors.Wrap(err, "upload get URL http")
}
if err = info.AsErr(); err != nil {
return errors.Wrap(err, "upload get URL")
}
// if file exists then rename it out the way otherwise uploads can fail
uploaded := false
var oldID = o.id
if o.hasMetaData {
newLeaf := leaf + "." + random.String(8)
fs.Debugf(o, "Moving old file out the way to %q", newLeaf)
err = o.fs.renameLeaf(ctx, true, oldID, newLeaf)
if err != nil {
return errors.Wrap(err, "upload rename old file")
}
defer func() {
// on failed upload rename old file back
if !uploaded {
fs.Debugf(o, "Renaming old file back (from %q to %q) since upload failed", leaf, newLeaf)
newErr := o.fs.renameLeaf(ctx, true, oldID, leaf)
if newErr != nil && err == nil {
err = errors.Wrap(newErr, "upload renaming old file back")
}
}
}()
}
opts = rest.Opts{
Method: "POST",
RootURL: info.URL,
Body: in,
MultipartParams: url.Values{
"token": {info.Token},
},
MultipartContentName: "file", // ..name of the parameter which is the attached file
MultipartFileName: leaf, // ..name of the file for the attached file
ContentLength: &size,
}
var result api.Response
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
})
if err != nil {
return errors.Wrap(err, "upload file http")