rclone/box/box.go
2017-10-09 16:19:37 +01:00

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// Package box provides an interface to the Box
// object storage system.
package box
// FIXME Box only supports file names of 255 characters or less. Names
// that will not be supported are those that contain non-printable
// ascii, / or \, names with trailing spaces, and the special names
// “.” and “..”.
// FIXME box can copy a directory
import (
"fmt"
"io"
"log"
"net/http"
"net/url"
"path"
"regexp"
"strconv"
"strings"
"time"
"github.com/ncw/rclone/box/api"
"github.com/ncw/rclone/dircache"
"github.com/ncw/rclone/fs"
"github.com/ncw/rclone/oauthutil"
"github.com/ncw/rclone/pacer"
"github.com/ncw/rclone/rest"
"github.com/pkg/errors"
"golang.org/x/oauth2"
)
const (
rcloneClientID = "d0374ba6pgmaguie02ge15sv1mllndho"
rcloneEncryptedClientSecret = "sYbJYm99WB8jzeaLPU0OPDMJKIkZvD2qOn3SyEMfiJr03RdtDt3xcZEIudRhbIDL"
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://api.box.com/2.0"
uploadURL = "https://upload.box.com/api/2.0"
listChunks = 1000 // chunk size to read directory listings
minUploadCutoff = 50000000 // upload cutoff can be no lower than this
)
// Globals
var (
// Description of how to auth for this app
oauthConfig = &oauth2.Config{
Scopes: nil,
Endpoint: oauth2.Endpoint{
AuthURL: "https://app.box.com/api/oauth2/authorize",
TokenURL: "https://app.box.com/api/oauth2/token",
},
ClientID: rcloneClientID,
ClientSecret: fs.MustReveal(rcloneEncryptedClientSecret),
RedirectURL: oauthutil.RedirectURL,
}
uploadCutoff = fs.SizeSuffix(50 * 1024 * 1024)
)
// Register with Fs
func init() {
fs.Register(&fs.RegInfo{
Name: "box",
Description: "Box",
NewFs: NewFs,
Config: func(name string) {
err := oauthutil.Config("box", name, oauthConfig)
if err != nil {
log.Fatalf("Failed to configure token: %v", err)
}
},
Options: []fs.Option{{
Name: fs.ConfigClientID,
Help: "Box App Client Id - leave blank normally.",
}, {
Name: fs.ConfigClientSecret,
Help: "Box App Client Secret - leave blank normally.",
}},
})
fs.VarP(&uploadCutoff, "box-upload-cutoff", "", "Cutoff for switching to multipart upload")
}
// Fs represents a remote box
type Fs struct {
name string // name of this remote
root string // the path we are working on
features *fs.Features // optional features
srv *rest.Client // the connection to the one drive server
dirCache *dircache.DirCache // Map of directory path to directory id
pacer *pacer.Pacer // pacer for API calls
tokenRenewer *oauthutil.Renew // renew the token on expiry
uploadToken *pacer.TokenDispenser // control concurrency
}
// Object describes a box object
//
// Will definitely have info but maybe not meta
type Object struct {
fs *Fs // what this object is part of
remote string // The remote path
hasMetaData bool // whether info below has been set
size int64 // size of the object
modTime time.Time // modification time of the object
id string // ID of the object
sha1 string // SHA-1 of the object content
}
// ------------------------------------------------------------
// 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("box root '%s'", f.root)
}
// Features returns the optional features of this Fs
func (f *Fs) Features() *fs.Features {
return f.features
}
// Pattern to match a box path
var matcher = regexp.MustCompile(`^([^/]*)(.*)$`)
// parsePath parses an box '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) {
authRety := false
if resp != nil && resp.StatusCode == 401 && len(resp.Header["Www-Authenticate"]) == 1 && strings.Index(resp.Header["Www-Authenticate"][0], "expired_token") >= 0 {
authRety = true
fs.Debugf(nil, "Should retry: %v", err)
}
return authRety || fs.ShouldRetry(err) || fs.ShouldRetryHTTP(resp, retryErrorCodes), err
}
// substitute reserved characters for box
func replaceReservedChars(x string) string {
// Backslash for FULLWIDTH REVERSE SOLIDUS
return strings.Replace(x, "\\", "", -1)
}
// restore reserved characters for box
func restoreReservedChars(x string) string {
// FULLWIDTH REVERSE SOLIDUS for Backslash
return strings.Replace(x, "", "\\", -1)
}
// readMetaDataForPath reads the metadata from the path
func (f *Fs) readMetaDataForPath(path string) (info *api.Item, err error) {
// defer fs.Trace(f, "path=%q", path)("info=%+v, err=%v", &info, &err)
leaf, directoryID, err := f.dirCache.FindRootAndPath(path, false)
if err != nil {
if err == fs.ErrorDirNotFound {
return nil, fs.ErrorObjectNotFound
}
return nil, err
}
found, err := f.listAll(directoryID, false, true, func(item *api.Item) bool {
if item.Name == leaf {
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 {
// Decode error response
errResponse := new(api.Error)
err := rest.DecodeJSON(resp, &errResponse)
if err != nil {
fs.Debugf(nil, "Couldn't decode error response: %v", err)
}
if errResponse.Code == "" {
errResponse.Code = resp.Status
}
if errResponse.Status == 0 {
errResponse.Status = resp.StatusCode
}
return errResponse
}
// NewFs constructs an Fs from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
if uploadCutoff < minUploadCutoff {
return nil, errors.Errorf("box: upload cutoff (%v) must be greater than equal to %v", uploadCutoff, fs.SizeSuffix(minUploadCutoff))
}
root = parsePath(root)
oAuthClient, ts, err := oauthutil.NewClient(name, oauthConfig)
if err != nil {
log.Fatalf("Failed to configure Box: %v", err)
}
f := &Fs{
name: name,
root: root,
srv: rest.NewClient(oAuthClient).SetRoot(rootURL),
pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
uploadToken: pacer.NewTokenDispenser(fs.Config.Transfers),
}
f.features = (&fs.Features{
CaseInsensitive: true,
CanHaveEmptyDirectories: true,
}).Fill(f)
f.srv.SetErrorHandler(errorHandler)
// Renew the token in the background
f.tokenRenewer = oauthutil.NewRenew(f.String(), ts, func() error {
_, err := f.readMetaDataForPath("")
return err
})
// Get rootID
f.dirCache = dircache.New(root, rootID, f)
// Find the current root
err = f.dirCache.FindRoot(false)
if err != nil {
// Assume it is a file
newRoot, remote := dircache.SplitPath(root)
newF := *f
newF.dirCache = dircache.New(newRoot, rootID, &newF)
newF.root = newRoot
// Make new Fs which is the parent
err = newF.dirCache.FindRoot(false)
if err != nil {
// No root so return old f
return f, nil
}
_, err := newF.newObjectWithInfo(remote, nil)
if err != nil {
if err == fs.ErrorObjectNotFound {
// File doesn't exist so return old f
return f, nil
}
return nil, err
}
// return an error with an fs which points to the parent
return &newF, fs.ErrorIsFile
}
return f, nil
}
// rootSlash returns root with a slash on if it is empty, otherwise empty string
func (f *Fs) rootSlash() string {
if f.root == "" {
return f.root
}
return f.root + "/"
}
// Return an Object from a path
//
// If it can't be found it returns the error fs.ErrorObjectNotFound.
func (f *Fs) newObjectWithInfo(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() // 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(remote string) (fs.Object, error) {
return f.newObjectWithInfo(remote, nil)
}
// FindLeaf finds a directory of name leaf in the folder with ID pathID
func (f *Fs) FindLeaf(pathID, leaf string) (pathIDOut string, found bool, err error) {
// Find the leaf in pathID
found, err = f.listAll(pathID, true, false, func(item *api.Item) bool {
if item.Name == leaf {
pathIDOut = item.ID
return true
}
return false
})
return pathIDOut, found, err
}
// fieldsValue creates a url.Values with fields set to those in api.Item
func fieldsValue() url.Values {
values := url.Values{}
values.Set("fields", api.ItemFields)
return values
}
// CreateDir makes a directory with pathID as parent and name leaf
func (f *Fs) CreateDir(pathID, leaf string) (newID string, err error) {
// fs.Debugf(f, "CreateDir(%q, %q)\n", pathID, leaf)
var resp *http.Response
var info *api.Item
opts := rest.Opts{
Method: "POST",
Path: "/folders",
Parameters: fieldsValue(),
}
mkdir := api.CreateFolder{
Name: replaceReservedChars(leaf),
Parent: api.Parent{
ID: pathID,
},
}
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(&opts, &mkdir, &info)
return shouldRetry(resp, err)
})
if err != nil {
//fmt.Printf("...Error %v\n", err)
return "", err
}
// 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(dirID string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/folders/" + dirID + "/items",
Parameters: fieldsValue(),
}
opts.Parameters.Set("limit", strconv.Itoa(listChunks))
offset := 0
OUTER:
for {
opts.Parameters.Set("offset", strconv.Itoa(offset))
var result api.FolderItems
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(&opts, nil, &result)
return shouldRetry(resp, err)
})
if err != nil {
return found, errors.Wrap(err, "couldn't list files")
}
for i := range result.Entries {
item := &result.Entries[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
}
if item.ItemStatus != api.ItemStatusActive {
continue
}
item.Name = restoreReservedChars(item.Name)
if fn(item) {
found = true
break OUTER
}
}
offset += result.Limit
if offset >= result.TotalCount {
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(dir string) (entries fs.DirEntries, err error) {
err = f.dirCache.FindRoot(false)
if err != nil {
return nil, err
}
directoryID, err := f.dirCache.FindDir(dir, false)
if err != nil {
return nil, err
}
var iErr error
_, err = f.listAll(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, info.ModTime()).SetID(info.ID)
// FIXME more info from dir?
entries = append(entries, d)
} else if info.Type == api.ItemTypeFile {
o, err := f.newObjectWithInfo(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(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.FindRootAndPath(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(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
exisitingObj, err := f.newObjectWithInfo(src.Remote(), nil)
switch err {
case nil:
return exisitingObj, exisitingObj.Update(in, src, options...)
case fs.ErrorObjectNotFound:
// Not found so create it
return f.PutUnchecked(in, src)
default:
return nil, err
}
}
// PutStream uploads to the remote path with the modTime given of indeterminate size
func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
return f.Put(in, src, options...)
}
// 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(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
remote := src.Remote()
size := src.Size()
modTime := src.ModTime()
o, _, _, err := f.createObject(remote, modTime, size)
if err != nil {
return nil, err
}
return o, o.Update(in, src, options...)
}
// Mkdir creates the container if it doesn't exist
func (f *Fs) Mkdir(dir string) error {
err := f.dirCache.FindRoot(true)
if err != nil {
return err
}
if dir != "" {
_, err = f.dirCache.FindDir(dir, true)
}
return err
}
// deleteObject removes an object by ID
func (f *Fs) deleteObject(id string) error {
opts := rest.Opts{
Method: "DELETE",
Path: "/files/" + id,
NoResponse: true,
}
return f.pacer.Call(func() (bool, error) {
resp, err := f.srv.Call(&opts)
return shouldRetry(resp, 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(dir string, check bool) error {
root := path.Join(f.root, dir)
if root == "" {
return errors.New("can't purge root directory")
}
dc := f.dirCache
err := dc.FindRoot(false)
if err != nil {
return err
}
rootID, err := dc.FindDir(dir, false)
if err != nil {
return err
}
opts := rest.Opts{
Method: "DELETE",
Path: "/folders/" + rootID,
Parameters: url.Values{},
NoResponse: true,
}
opts.Parameters.Set("recursive", strconv.FormatBool(!check))
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.Call(&opts)
return shouldRetry(resp, err)
})
if err != nil {
return errors.Wrap(err, "rmdir failed")
}
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(dir string) error {
return f.purgeCheck(dir, true)
}
// Precision return the precision of this Fs
func (f *Fs) Precision() time.Duration {
return time.Second
}
// Copy src to this remote using server side copy 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.ErrorCantCopy
func (f *Fs) Copy(src fs.Object, remote string) (fs.Object, error) {
srcObj, ok := src.(*Object)
if !ok {
fs.Debugf(src, "Can't copy - not same remote type")
return nil, fs.ErrorCantCopy
}
err := srcObj.readMetaData()
if err != nil {
return nil, err
}
srcPath := srcObj.fs.rootSlash() + srcObj.remote
dstPath := f.rootSlash() + remote
if strings.ToLower(srcPath) == strings.ToLower(dstPath) {
return nil, errors.Errorf("can't copy %q -> %q as are same name when lowercase", srcPath, dstPath)
}
// Create temporary object
dstObj, leaf, directoryID, err := f.createObject(remote, srcObj.modTime, srcObj.size)
if err != nil {
return nil, err
}
// Copy the object
opts := rest.Opts{
Method: "POST",
Path: "/files/" + srcObj.id + "/copy",
Parameters: fieldsValue(),
}
replacedLeaf := replaceReservedChars(leaf)
copy := api.CopyFile{
Name: replacedLeaf,
Parent: api.Parent{
ID: directoryID,
},
}
var resp *http.Response
var info *api.Item
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(&opts, &copy, &info)
return shouldRetry(resp, err)
})
if err != nil {
return nil, err
}
err = dstObj.setMetaData(info)
if err != nil {
return nil, err
}
return dstObj, nil
}
// 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() error {
return f.purgeCheck("", false)
}
// move a file or folder
func (f *Fs) move(endpoint, id, leaf, directoryID string) (info *api.Item, err error) {
// Move the object
opts := rest.Opts{
Method: "PUT",
Path: endpoint + id,
Parameters: fieldsValue(),
}
move := api.UpdateFileMove{
Name: replaceReservedChars(leaf),
Parent: api.Parent{
ID: directoryID,
},
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(&opts, &move, &info)
return shouldRetry(resp, err)
})
if err != nil {
return nil, err
}
return info, 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(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(remote, srcObj.modTime, srcObj.size)
if err != nil {
return nil, err
}
// Do the move
info, err := f.move("/files/", srcObj.id, leaf, directoryID)
if err != nil {
return nil, err
}
err = dstObj.setMetaData(info)
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(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
}
srcPath := path.Join(srcFs.root, srcRemote)
dstPath := path.Join(f.root, dstRemote)
// Refuse to move to or from the root
if srcPath == "" || dstPath == "" {
fs.Debugf(src, "DirMove error: Can't move root")
return errors.New("can't move root directory")
}
// find the root src directory
err := srcFs.dirCache.FindRoot(false)
if err != nil {
return err
}
// find the root dst directory
if dstRemote != "" {
err = f.dirCache.FindRoot(true)
if err != nil {
return err
}
} else {
if f.dirCache.FoundRoot() {
return fs.ErrorDirExists
}
}
// Find ID of dst parent, creating subdirs if necessary
var leaf, directoryID string
findPath := dstRemote
if dstRemote == "" {
findPath = f.root
}
leaf, directoryID, err = f.dirCache.FindPath(findPath, true)
if err != nil {
return err
}
// Check destination does not exist
if dstRemote != "" {
_, err = f.dirCache.FindDir(dstRemote, false)
if err == fs.ErrorDirNotFound {
// OK
} else if err != nil {
return err
} else {
return fs.ErrorDirExists
}
}
// Find ID of src
srcID, err := srcFs.dirCache.FindDir(srcRemote, false)
if err != nil {
return err
}
// Do the move
_, err = f.move("/folders/", srcID, leaf, directoryID)
if err != nil {
return err
}
srcFs.dirCache.FlushDir(srcRemote)
return 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() fs.HashSet {
return fs.HashSet(fs.HashSHA1)
}
// ------------------------------------------------------------
// 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
}
// srvPath returns a path for use in server
func (o *Object) srvPath() string {
return replaceReservedChars(o.fs.rootSlash() + o.remote)
}
// Hash returns the SHA-1 of an object returning a lowercase hex string
func (o *Object) Hash(t fs.HashType) (string, error) {
if t != fs.HashSHA1 {
return "", fs.ErrHashUnsupported
}
return o.sha1, nil
}
// Size returns the size of an object in bytes
func (o *Object) Size() int64 {
err := o.readMetaData()
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 != api.ItemTypeFile {
return errors.Wrapf(fs.ErrorNotAFile, "%q is %q", o.remote, info.Type)
}
o.hasMetaData = true
o.size = info.Size
o.sha1 = info.SHA1
o.modTime = info.ModTime()
o.id = info.ID
return nil
}
// readMetaData gets the metadata if it hasn't already been fetched
//
// it also sets the info
func (o *Object) readMetaData() (err error) {
if o.hasMetaData {
return nil
}
info, err := o.fs.readMetaDataForPath(o.remote)
if err != nil {
if apiErr, ok := err.(*api.Error); ok {
if apiErr.Code == "not_found" || apiErr.Code == "trashed" {
return fs.ErrorObjectNotFound
}
}
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() time.Time {
err := o.readMetaData()
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(modTime time.Time) (*api.Item, error) {
opts := rest.Opts{
Method: "PUT",
Path: "/files/" + o.id,
Parameters: fieldsValue(),
}
update := api.UpdateFileModTime{
ContentModifiedAt: api.Time(modTime),
}
var info *api.Item
err := o.fs.pacer.Call(func() (bool, error) {
resp, err := o.fs.srv.CallJSON(&opts, &update, &info)
return shouldRetry(resp, err)
})
return info, err
}
// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(modTime time.Time) error {
info, err := o.setModTime(modTime)
if err != nil {
return err
}
return o.setMetaData(info)
}
// 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(options ...fs.OpenOption) (in io.ReadCloser, err error) {
if o.id == "" {
return nil, errors.New("can't download - no id")
}
var resp *http.Response
opts := rest.Opts{
Method: "GET",
Path: "/files/" + o.id + "/content",
Options: options,
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.Call(&opts)
return shouldRetry(resp, err)
})
if err != nil {
return nil, err
}
return resp.Body, err
}
// upload does a single non-multipart upload
//
// This is recommended for less than 50 MB of content
func (o *Object) upload(in io.Reader, leaf, directoryID string, modTime time.Time) (err error) {
upload := api.UploadFile{
Name: replaceReservedChars(leaf),
ContentModifiedAt: api.Time(modTime),
ContentCreatedAt: api.Time(modTime),
Parent: api.Parent{
ID: directoryID,
},
}
var resp *http.Response
var result api.FolderItems
opts := rest.Opts{
Method: "POST",
Body: in,
MultipartMetadataName: "attributes",
MultipartContentName: "contents",
MultipartFileName: upload.Name,
RootURL: uploadURL,
}
// If object has an ID then it is existing so create a new version
if o.id != "" {
opts.Path = "/files/" + o.id + "/content"
} else {
opts.Path = "/files/content"
}
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(&opts, &upload, &result)
return shouldRetry(resp, err)
})
if err != nil {
return err
}
if result.TotalCount != 1 || len(result.Entries) != 1 {
return errors.Errorf("failed to upload %v - not sure why", o)
}
return o.setMetaData(&result.Entries[0])
}
// 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(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error) {
o.fs.tokenRenewer.Start()
defer o.fs.tokenRenewer.Stop()
size := src.Size()
modTime := src.ModTime()
remote := o.Remote()
// Create the directory for the object if it doesn't exist
leaf, directoryID, err := o.fs.dirCache.FindRootAndPath(remote, true)
if err != nil {
return err
}
// Upload with simple or multipart
if size <= int64(uploadCutoff) {
err = o.upload(in, leaf, directoryID, modTime)
} else {
err = o.uploadMultipart(in, leaf, directoryID, size, modTime)
}
return err
}
// Remove an object
func (o *Object) Remove() error {
return o.fs.deleteObject(o.id)
}
// Check the interfaces are satisfied
var (
_ fs.Fs = (*Fs)(nil)
_ fs.Purger = (*Fs)(nil)
_ fs.PutStreamer = (*Fs)(nil)
_ fs.Copier = (*Fs)(nil)
_ fs.Mover = (*Fs)(nil)
_ fs.DirMover = (*Fs)(nil)
_ fs.DirCacheFlusher = (*Fs)(nil)
_ fs.Object = (*Object)(nil)
)