mega: fix unmarshal error on download - FIXME need to upstream this fix

Failed to copy: failed to open source object: open download file
    failed: json: cannot unmarshal number -18 into Go struct field
    DownloadResp.e of type uint32

See: https://forum.rclone.org/t/failed-message-what-does-it-mean/9065

.travis.yml

@@ -8,7 +8,7 @@ go:
 - 1.9.x
 - 1.10.x
 - 1.11.x
-- 1.12rc1
+- 1.12.x
 - tip
 go_import_path: github.com/ncw/rclone
 before_install:
@@ -44,7 +44,7 @@ matrix:
   - go: tip
   include:
   - os: osx
-    go: 1.12rc1
+    go: 1.12.x
     env: GOTAGS=""
     cache:
       directories:
@@ -56,5 +56,5 @@ deploy:
   on:
     repo: ncw/rclone
     all_branches: true
-    go: 1.12rc1
+    go: 1.12.x
     condition: $TRAVIS_PULL_REQUEST == false

Makefile

@@ -17,8 +17,8 @@ ifneq ($(TAG),$(LAST_TAG))
 endif
 GO_VERSION := $(shell go version)
 GO_FILES := $(shell go list ./... | grep -v /vendor/ )
-# Run full tests if go >= go1.11
-FULL_TESTS := $(shell go version | perl -lne 'print "go$$1.$$2" if /go(\d+)\.(\d+)/ && ($$1 > 1 || $$2 >= 11)')
+# Run full tests if go >= go1.12
+FULL_TESTS := $(shell go version | perl -lne 'print "go$$1.$$2" if /go(\d+)\.(\d+)/ && ($$1 > 1 || $$2 >= 12)')
 BETA_PATH := $(BRANCH_PATH)$(TAG)
 BETA_URL := https://beta.rclone.org/$(BETA_PATH)/
 BETA_UPLOAD_ROOT := memstore:beta-rclone-org

README.md

@@ -36,6 +36,7 @@ Rclone *("rsync for cloud storage")* is a command line program to sync files and
   * Hubic [:page_facing_up:](https://rclone.org/hubic/)
   * Jottacloud [:page_facing_up:](https://rclone.org/jottacloud/)
   * IBM COS S3 [:page_facing_up:](https://rclone.org/s3/#ibm-cos-s3)
+  * Koofr [:page_facing_up:](https://rclone.org/koofr/)
   * Memset Memstore [:page_facing_up:](https://rclone.org/swift/)
   * Mega [:page_facing_up:](https://rclone.org/mega/)
   * Microsoft Azure Blob Storage [:page_facing_up:](https://rclone.org/azureblob/)

backend/adb/adb.go

@@ -1,821 +0,0 @@
-package adb
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/ncw/rclone/fs"
-	"github.com/ncw/rclone/fs/config/configmap"
-	"github.com/ncw/rclone/fs/config/configstruct"
-	"github.com/ncw/rclone/fs/hash"
-	"github.com/ncw/rclone/lib/readers"
-	"github.com/pkg/errors"
-	adb "github.com/thinkhy/go-adb"
-	"github.com/thinkhy/go-adb/wire"
-)
-
-// Register with Fs
-func init() {
-	fs.Register(&fs.RegInfo{
-		Name:        "adb",
-		Description: "Android Debug Bridge",
-		NewFs:       NewFs,
-		Options: []fs.Option{{
-			Name:     "serial",
-			Help:     "The device serial to use. Leave empty for auto selection.",
-			Advanced: true,
-		}, {
-			Name:     "host",
-			Default:  "localhost",
-			Help:     "The ADB server host.",
-			Advanced: true,
-		}, {
-			Name:     "port",
-			Default:  5037,
-			Help:     "The ADB server port.",
-			Advanced: true,
-		}, {
-			Name:     "executable",
-			Help:     "The ADB executable path.",
-			Advanced: true,
-		}, {
-			Name:     "copy_links",
-			Help:     "Follow symlinks and copy the pointed to item.",
-			Default:  false,
-			Advanced: true,
-		}},
-	})
-}
-
-// Options defines the configuration for this backend
-type Options struct {
-	Serial         string
-	Host           string
-	Port           uint16
-	Executable     string
-	FollowSymlinks bool `config:"copy_links"`
-}
-
-// Fs represents a adb device
-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
-	client      *adb.Adb
-	device      *execDevice
-	statFunc    statFunc
-	statFuncMu  sync.Mutex
-	touchFunc   touchFunc
-	touchFuncMu sync.Mutex
-}
-
-// Object describes a adb file
-type Object struct {
-	fs      *Fs    // what this object is part of
-	remote  string // The remote path
-	size    int64
-	mode    os.FileMode
-	modTime time.Time
-}
-
-// ------------------------------------------------------------
-
-// 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("ADB root '%s'", f.root)
-}
-
-// Features returns the optional features of this Fs
-func (f *Fs) Features() *fs.Features {
-	return f.features
-}
-
-// NewFs constructs an Fs from the path, container:path
-func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
-	// Parse config into Options struct
-	opt := new(Options)
-	err := configstruct.Set(m, opt)
-	if err != nil {
-		return nil, err
-	}
-
-	if root == "" {
-		root = "/"
-	}
-
-	f := &Fs{
-		name:      name,
-		root:      root,
-		opt:       *opt,
-		statFunc:  (*Object).statTry,
-		touchFunc: (*Object).touchTry,
-	}
-	f.features = (&fs.Features{
-		CanHaveEmptyDirectories: true,
-	}).Fill(f)
-
-	f.client, err = adb.NewWithConfig(adb.ServerConfig{
-		Host:      opt.Host,
-		Port:      int(opt.Port),
-		PathToAdb: opt.Executable,
-	})
-	if err != nil {
-		return nil, errors.Wrapf(err, "Could not configure ADB server")
-	}
-	err = f.client.StartServer()
-	if err != nil {
-		return nil, errors.Wrapf(err, "Could not start ADB server")
-	}
-
-	serverVersion, err := f.client.ServerVersion()
-	if err != nil {
-		return nil, errors.Wrapf(err, "Could not get ADB server version")
-	}
-	fs.Debugf(f, "ADB server version: 0x%X", serverVersion)
-
-	serials, err := f.client.ListDeviceSerials()
-	if err != nil {
-		return nil, errors.Wrapf(err, "Could not get ADB devices")
-	}
-	descriptor := adb.AnyDevice()
-	if opt.Serial != "" {
-		descriptor = adb.DeviceWithSerial(opt.Serial)
-	}
-	if len(serials) > 1 && opt.Serial == "" {
-		return nil, errors.New("Multiple ADB devices found. Use the serial config to select a specific device")
-	}
-	f.device = &execDevice{f.client.Device(descriptor)}
-
-	// follow symlinks for root pathes
-	entry, err := f.newEntryFollowSymlinks("")
-	switch err {
-	case nil:
-	case fs.ErrorObjectNotFound:
-	default:
-		return nil, err
-	}
-	switch entry.(type) {
-	case fs.Object:
-		f.root = path.Dir(f.root)
-		return f, fs.ErrorIsFile
-	case nil:
-		return f, nil
-	case fs.Directory:
-		return f, nil
-	default:
-		return nil, errors.Errorf("Invalid root entry type %t", entry)
-	}
-}
-
-// Precision of the object storage system
-func (f *Fs) Precision() time.Duration {
-	return 1 * time.Second
-}
-
-// Hashes returns the supported hash sets.
-func (f *Fs) Hashes() hash.Set {
-	return hash.Set(hash.None)
-}
-
-// 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) {
-	p := path.Join(f.root, dir)
-	dirEntries, err := f.device.ListDirEntries(p)
-	if err != nil {
-		return nil, errors.Wrap(err, "ListDirEntries")
-	}
-
-	defer fs.CheckClose(dirEntries, &err)
-
-	found := false
-	for dirEntries.Next() {
-		found = true
-		dirEntry := dirEntries.Entry()
-		switch dirEntry.Name {
-		case ".", "..":
-			continue
-		}
-		fsEntry, err := f.entryForDirEntry(path.Join(dir, dirEntry.Name), dirEntry, f.opt.FollowSymlinks)
-		if err != nil {
-			fs.Errorf(p, "Listing error: %q: %v", dirEntry.Name, err)
-			return nil, err
-		} else if fsEntry != nil {
-			entries = append(entries, fsEntry)
-		} else {
-			fs.Debugf(f, "Skipping DirEntry %#v", dirEntry)
-		}
-	}
-	err = dirEntries.Err()
-	if err != nil {
-		return nil, errors.Wrap(err, "ListDirEntries")
-	}
-	if !found {
-		return nil, fs.ErrorDirNotFound
-	}
-	return
-}
-
-func (f *Fs) entryForDirEntry(remote string, e *adb.DirEntry, followSymlinks bool) (fs.DirEntry, error) {
-	o := f.newObjectWithInfo(remote, e)
-	// Follow symlinks if required
-	if followSymlinks && (e.Mode&os.ModeSymlink) != 0 {
-		err := f.statFunc(&o)
-		if err != nil {
-			return nil, err
-		}
-	}
-	if o.mode.IsDir() {
-		return fs.NewDir(remote, o.modTime), nil
-	}
-	return &o, nil
-}
-
-func (f *Fs) newEntry(remote string) (fs.DirEntry, error) {
-	return f.newEntryWithFollow(remote, f.opt.FollowSymlinks)
-}
-func (f *Fs) newEntryFollowSymlinks(remote string) (fs.DirEntry, error) {
-	return f.newEntryWithFollow(remote, true)
-}
-func (f *Fs) newEntryWithFollow(remote string, followSymlinks bool) (fs.DirEntry, error) {
-	entry, err := f.device.Stat(path.Join(f.root, remote))
-	if err != nil {
-		if adb.HasErrCode(err, adb.FileNoExistError) {
-			return nil, fs.ErrorObjectNotFound
-		}
-		return nil, errors.Wrapf(err, "Stat failed")
-	}
-	return f.entryForDirEntry(remote, entry, followSymlinks)
-}
-
-func (f *Fs) newObjectWithInfo(remote string, e *adb.DirEntry) Object {
-	return Object{
-		fs:      f,
-		remote:  remote,
-		size:    int64(e.Size),
-		mode:    e.Mode,
-		modTime: e.ModifiedAt,
-	}
-}
-
-// NewObject finds the Object at remote.  If it can't be found
-// it returns the error ErrorObjectNotFound.
-func (f *Fs) NewObject(remote string) (fs.Object, error) {
-	entry, err := f.newEntry(remote)
-	if err != nil {
-		return nil, err
-	}
-	obj, ok := entry.(fs.Object)
-	if !ok {
-		return nil, fs.ErrorObjectNotFound
-	}
-	return obj, nil
-}
-
-// Put in to the remote path with the modTime given of the given size
-//
-// When called from outside a Fs by rclone, src.Size() will always be >= 0.
-// But for unknown-sized objects (indicated by src.Size() == -1), Put should either
-// return an error or upload it properly (rather than e.g. calling panic).
-//
-// May create the object even if it returns an error - if so
-// will return the object and the error, otherwise will return
-// nil and the error
-func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
-	remote := src.Remote()
-	// Temporary Object under construction - info filled in by Update()
-	o := f.newObject(remote)
-	err := o.Update(in, src, options...)
-	if err != nil {
-		return nil, err
-	}
-	return o, nil
-}
-
-// newObject makes a half completed Object
-func (f *Fs) newObject(remote string) *Object {
-	return &Object{
-		fs:     f,
-		remote: remote,
-	}
-}
-
-// Mkdir makes the directory (container, bucket)
-//
-// Shouldn't return an error if it already exists
-func (f *Fs) Mkdir(dir string) error {
-	p := path.Join(f.root, dir)
-	output, code, err := f.device.execCommandWithExitCode("mkdir -p", p)
-	switch err := err.(type) {
-	case nil:
-		return nil
-	case adb.ShellExitError:
-		entry, _ := f.newEntry(p)
-		if _, ok := entry.(fs.Directory); ok {
-			return nil
-		}
-		return errors.Errorf("mkdir %q failed with %d: %q", dir, code, output)
-	default:
-		return errors.Wrap(err, "mkdir")
-	}
-}
-
-// Rmdir removes the directory (container, bucket) if empty
-//
-// Return an error if it doesn't exist or isn't empty
-func (f *Fs) Rmdir(dir string) error {
-	p := path.Join(f.root, dir)
-	output, code, err := f.device.execCommandWithExitCode("rmdir", p)
-	switch err := err.(type) {
-	case nil:
-		return nil
-	case adb.ShellExitError:
-		return errors.Errorf("rmdir %q failed with %d: %q", dir, code, output)
-	default:
-		return errors.Wrap(err, "rmdir")
-	}
-}
-
-// 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
-}
-
-// ModTime returns the modification date of the file
-// It should return a best guess if one isn't available
-func (o *Object) ModTime() time.Time {
-	return o.modTime
-}
-
-// Size returns the size of the file
-func (o *Object) Size() int64 {
-	return o.size
-}
-
-// Hash returns the selected checksum of the file
-// If no checksum is available it returns ""
-func (o *Object) Hash(hash.Type) (string, error) {
-	return "", hash.ErrUnsupported
-}
-
-// Storable says whether this object can be stored
-func (o *Object) Storable() bool {
-	return true
-}
-
-// SetModTime sets the metadata on the object to set the modification date
-func (o *Object) SetModTime(t time.Time) error {
-	return o.fs.touchFunc(o, t)
-}
-
-func (o *Object) stat() error {
-	return o.statStatArg(statArgC, path.Join(o.fs.root, o.remote))
-}
-
-func (o *Object) setMetadata(entry *adb.DirEntry) {
-	// Don't overwrite the values if we don't need to
-	// this avoids upsetting the race detector
-	if o.size != int64(entry.Size) {
-		o.size = int64(entry.Size)
-	}
-	if !o.modTime.Equal(entry.ModifiedAt) {
-		o.modTime = entry.ModifiedAt
-	}
-	if o.mode != entry.Mode {
-		o.mode = decodeEntryMode(uint32(entry.Mode))
-	}
-}
-
-// Open opens the file for read.  Call Close() on the returned io.ReadCloser
-func (o *Object) Open(options ...fs.OpenOption) (io.ReadCloser, error) {
-	const blockSize = 1 << 12
-
-	var offset, count int64 = 0, -1
-	for _, option := range options {
-		switch x := option.(type) {
-		case *fs.RangeOption:
-			offset, count = x.Decode(o.size)
-		case *fs.SeekOption:
-			offset = x.Offset
-		default:
-			if option.Mandatory() {
-				fs.Logf(o, "Unsupported mandatory option: %v", option)
-			}
-		}
-	}
-	if offset > o.size {
-		offset = o.size
-	}
-	if count < 0 {
-		count = o.size - offset
-	} else if count+offset > o.size {
-		count = o.size - offset
-	}
-	fs.Debugf(o, "Open: remote: %q offset: %d count: %d", o.remote, offset, count)
-
-	if count == 0 {
-		return ioutil.NopCloser(bytes.NewReader(nil)), nil
-	}
-	offsetBlocks, offsetRest := offset/blockSize, offset%blockSize
-	countBlocks := (count-1)/blockSize + 1
-
-	conn, err := o.fs.device.execCommand(fmt.Sprintf("sh -c 'dd \"if=$0\" bs=%d skip=%d count=%d 2>/dev/null'", blockSize, offsetBlocks, countBlocks), path.Join(o.fs.root, o.remote))
-	if err != nil {
-		return nil, err
-	}
-
-	return &adbReader{
-		ReadCloser: readers.NewLimitedReadCloser(conn, count+offsetRest),
-		skip:       offsetRest,
-		expected:   count,
-	}, nil
-}
-
-// Update in to the object with the modTime given of the given size
-//
-// When called from outside a Fs by rclone, src.Size() will always be >= 0.
-// But for unknown-sized objects (indicated by src.Size() == -1), Upload should either
-// return an error or update the object properly (rather than e.g. calling panic).
-func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
-	for _, option := range options {
-		if option.Mandatory() {
-			fs.Logf(option, "Unsupported mandatory option: %v", option)
-		}
-	}
-	written, err := o.writeToFile(path.Join(o.fs.root, o.remote), in, 0666, src.ModTime())
-	if err != nil {
-		if removeErr := o.Remove(); removeErr != nil {
-			fs.Errorf(o, "Failed to remove partially written file: %v", removeErr)
-		}
-		return err
-	}
-	expected := src.Size()
-	if expected == -1 {
-		expected = written
-	}
-	for _, t := range []int64{100, 250, 500, 1000, 2500, 5000, 10000} {
-		err = o.stat()
-		if err != nil {
-			return err
-		}
-		if o.size == expected {
-			return nil
-		}
-		fs.Debugf(o, "Invalid size after update, expected: %d got: %d", expected, o.size)
-		time.Sleep(time.Duration(t) * time.Millisecond)
-	}
-	return o.stat()
-}
-
-// Remove this object
-func (o *Object) Remove() error {
-	p := path.Join(o.fs.root, o.remote)
-	output, code, err := o.fs.device.execCommandWithExitCode("rm", p)
-	switch err := err.(type) {
-	case nil:
-		return nil
-	case adb.ShellExitError:
-		return errors.Errorf("rm %q failed with %d: %q", o.remote, code, output)
-	default:
-		return errors.Wrap(err, "rm")
-	}
-}
-
-func (o *Object) writeToFile(path string, rd io.Reader, perms os.FileMode, modeTime time.Time) (written int64, err error) {
-	dst, err := o.fs.device.OpenWrite(path, perms, modeTime)
-	if err != nil {
-		return
-	}
-	defer fs.CheckClose(dst, &err)
-	return io.Copy(dst, rd)
-}
-
-type statFunc func(*Object) error
-
-func (o *Object) statTry() error {
-	o.fs.statFuncMu.Lock()
-	defer o.fs.statFuncMu.Unlock()
-
-	for _, f := range []statFunc{
-		(*Object).statStatL, (*Object).statRealPath, (*Object).statReadLink,
-	} {
-		err := f(o)
-		if err != nil {
-			fs.Debugf(o, "%s", err)
-		} else {
-			o.fs.statFunc = f
-			return nil
-		}
-	}
-
-	return errors.Errorf("unable to resolve link target")
-}
-
-const (
-	statArgLc = "-Lc"
-	statArgC  = "-c"
-)
-
-func (o *Object) statStatL() error {
-	return o.statStatArg(statArgLc, path.Join(o.fs.root, o.remote))
-}
-
-func (o *Object) statStatArg(arg, path string) error {
-	output, code, err := o.fs.device.execCommandWithExitCode(fmt.Sprintf("stat %s %s", arg, "%f,%s,%Y"), path)
-	output = strings.TrimSpace(output)
-	switch err := err.(type) {
-	case nil:
-	case adb.ShellExitError:
-		return errors.Errorf("stat %q failed with %d: %q", o.remote, code, output)
-	default:
-		return errors.Wrap(err, "stat")
-	}
-
-	parts := strings.Split(output, ",")
-	if len(parts) != 3 {
-		return errors.Errorf("stat %q invalid output %q", o.remote, output)
-	}
-
-	mode, err := strconv.ParseUint(parts[0], 16, 32)
-	if err != nil {
-		return errors.Errorf("stat %q invalid output %q", o.remote, output)
-	}
-	size, err := strconv.ParseUint(parts[1], 10, 64)
-	if err != nil {
-		return errors.Errorf("stat %q invalid output %q", o.remote, output)
-	}
-	modTime, err := strconv.ParseInt(parts[2], 10, 64)
-	if err != nil {
-		return errors.Errorf("stat %q invalid output %q", o.remote, output)
-	}
-
-	o.size = int64(size)
-	o.modTime = time.Unix(modTime, 0)
-	o.mode = decodeEntryMode(uint32(mode))
-	return nil
-}
-
-func (o *Object) statReadLink() error {
-	p := path.Join(o.fs.root, o.remote)
-	output, code, err := o.fs.device.execCommandWithExitCode("readlink -f", p)
-	output = strings.TrimSuffix(output, "\n")
-	switch err := err.(type) {
-	case nil:
-	case adb.ShellExitError:
-		return errors.Errorf("readlink %q failed with %d: %q", o.remote, code, output)
-	default:
-		return errors.Wrap(err, "readlink")
-	}
-	return o.statStatArg(statArgC, output)
-}
-func (o *Object) statRealPath() error {
-	p := path.Join(o.fs.root, o.remote)
-	output, code, err := o.fs.device.execCommandWithExitCode("realpath", p)
-	output = strings.TrimSuffix(output, "\n")
-	switch err := err.(type) {
-	case nil:
-	case adb.ShellExitError:
-		return errors.Errorf("realpath %q failed with %d: %q", o.remote, code, output)
-	default:
-		return errors.Wrap(err, "realpath")
-	}
-	return o.statStatArg(statArgC, output)
-}
-
-type touchFunc func(*Object, time.Time) error
-
-func (o *Object) touchTry(t time.Time) error {
-	o.fs.touchFuncMu.Lock()
-	defer o.fs.touchFuncMu.Unlock()
-
-	for _, f := range []touchFunc{
-		(*Object).touchCmd, (*Object).touchCd,
-	} {
-		err := f(o, t)
-		if err != nil {
-			fs.Debugf(o, "%s", err)
-		} else {
-			o.fs.touchFunc = f
-			return nil
-		}
-	}
-
-	return errors.Errorf("unable to resolve link target")
-}
-
-const (
-	touchArgCmd = "-cmd"
-	touchArgCd  = "-cd"
-)
-
-func (o *Object) touchCmd(t time.Time) error {
-	return o.touchStatArg(touchArgCmd, path.Join(o.fs.root, o.remote), t)
-}
-func (o *Object) touchCd(t time.Time) error {
-	return o.touchStatArg(touchArgCd, path.Join(o.fs.root, o.remote), t)
-}
-
-func (o *Object) touchStatArg(arg, path string, t time.Time) error {
-	output, code, err := o.fs.device.execCommandWithExitCode(fmt.Sprintf("touch %s %s", arg, t.Format(time.RFC3339Nano)), path)
-	output = strings.TrimSpace(output)
-	switch err := err.(type) {
-	case nil:
-	case adb.ShellExitError:
-		return errors.Errorf("touch %q failed with %d: %q", o.remote, code, output)
-	default:
-		return errors.Wrap(err, "touch")
-	}
-
-	err = o.stat()
-	if err != nil {
-		return err
-	}
-	if diff, ok := checkTimeEqualWithPrecision(t, o.modTime, o.fs.Precision()); !ok {
-		return errors.Errorf("touch %q to %s was ineffective: %d", o.remote, t, diff)
-	}
-
-	return nil
-}
-
-func checkTimeEqualWithPrecision(t0, t1 time.Time, precision time.Duration) (time.Duration, bool) {
-	dt := t0.Sub(t1)
-	if dt >= precision || dt <= -precision {
-		return dt, false
-	}
-	return dt, true
-}
-
-func decodeEntryMode(entryMode uint32) os.FileMode {
-	const (
-		unixIFBLK  = 0x6000
-		unixIFMT   = 0xf000
-		unixIFCHR  = 0x2000
-		unixIFDIR  = 0x4000
-		unixIFIFO  = 0x1000
-		unixIFLNK  = 0xa000
-		unixIFREG  = 0x8000
-		unixIFSOCK = 0xc000
-		unixISGID  = 0x400
-		unixISUID  = 0x800
-		unixISVTX  = 0x200
-	)
-
-	mode := os.FileMode(entryMode & 0777)
-	switch entryMode & unixIFMT {
-	case unixIFBLK:
-		mode |= os.ModeDevice
-	case unixIFCHR:
-		mode |= os.ModeDevice | os.ModeCharDevice
-	case unixIFDIR:
-		mode |= os.ModeDir
-	case unixIFIFO:
-		mode |= os.ModeNamedPipe
-	case unixIFLNK:
-		mode |= os.ModeSymlink
-	case unixIFREG:
-		// nothing to do
-	case unixIFSOCK:
-		mode |= os.ModeSocket
-	}
-	if entryMode&unixISGID != 0 {
-		mode |= os.ModeSetgid
-	}
-	if entryMode&unixISUID != 0 {
-		mode |= os.ModeSetuid
-	}
-	if entryMode&unixISVTX != 0 {
-		mode |= os.ModeSticky
-	}
-	return mode
-}
-
-type execDevice struct {
-	*adb.Device
-}
-
-func (d *execDevice) execCommandWithExitCode(cmd string, arg string) (string, int, error) {
-	cmdLine := fmt.Sprintf("sh -c '%s \"$0\"; echo :$?' '%s'", cmd, strings.Replace(arg, "'", "'\\''", -1))
-	fs.Debugf("adb", "exec: %s", cmdLine)
-	conn, err := d.execCommand(cmdLine)
-	if err != nil {
-		return "", -1, err
-	}
-
-	resp, err := conn.ReadUntilEof()
-	if err != nil {
-		return "", -1, errors.Wrap(err, "ExecCommand")
-	}
-
-	outStr := string(resp)
-	idx := strings.LastIndexByte(outStr, ':')
-	if idx == -1 {
-		return outStr, -1, fmt.Errorf("adb shell aborted, can not parse exit code")
-	}
-	exitCode, _ := strconv.Atoi(strings.TrimSpace(outStr[idx+1:]))
-	if exitCode != 0 {
-		err = adb.ShellExitError{Command: cmdLine, ExitCode: exitCode}
-	}
-	return outStr[:idx], exitCode, err
-}
-
-func (d *execDevice) execCommand(cmd string, args ...string) (*wire.Conn, error) {
-	cmd = prepareCommandLineEscaped(cmd, args...)
-	conn, err := d.Dial()
-	if err != nil {
-		return nil, errors.Wrap(err, "ExecCommand")
-	}
-	defer func() {
-		if err != nil && conn != nil {
-			_ = conn.Close()
-		}
-	}()
-
-	req := fmt.Sprintf("exec:%s", cmd)
-
-	if err = conn.SendMessage([]byte(req)); err != nil {
-		return nil, errors.Wrap(err, "ExecCommand")
-	}
-	if _, err = conn.ReadStatus(req); err != nil {
-		return nil, errors.Wrap(err, "ExecCommand")
-	}
-	return conn, nil
-}
-
-func prepareCommandLineEscaped(cmd string, args ...string) string {
-	for i, arg := range args {
-		args[i] = fmt.Sprintf("'%s'", strings.Replace(arg, "'", "'\\''", -1))
-	}
-
-	// Prepend the command to the args array.
-	if len(args) > 0 {
-		cmd = fmt.Sprintf("%s %s", cmd, strings.Join(args, " "))
-	}
-
-	return cmd
-}
-
-type adbReader struct {
-	io.ReadCloser
-	skip     int64
-	read     int64
-	expected int64
-}
-
-func (r *adbReader) Read(b []byte) (n int, err error) {
-	n, err = r.ReadCloser.Read(b)
-	if s := r.skip; n > 0 && s > 0 {
-		_n := int64(n)
-		if _n <= s {
-			r.skip -= _n
-			return r.Read(b)
-		}
-		r.skip = 0
-		copy(b, b[s:n])
-		n -= int(s)
-	}
-	r.read += int64(n)
-	if err == io.EOF && r.read < r.expected {
-		fs.Debugf("adb", "Read: read: %d expected: %d n: %d", r.read, r.expected, n)
-		return n, io.ErrUnexpectedEOF
-	}
-	return n, err
-}

backend/adb/adb_test.go

@@ -1,20 +0,0 @@
-// Test ADB filesystem interface
-package adb_test
-
-import (
-	"testing"
-
-	"github.com/ncw/rclone/backend/adb"
-	"github.com/ncw/rclone/fstest/fstests"
-)
-
-// TestIntegration runs integration tests against the remote
-func TestIntegration(t *testing.T) {
-	fstests.Run(t, &fstests.Opt{
-		RemoteName: "TestAdb:/data/local/tmp",
-		NilObject:  (*adb.Object)(nil),
-		ExtraConfig: []fstests.ExtraConfigItem{
-			{Name: "TestAdb", Key: "copy_links", Value: "true"},
-		},
-	})
-}

backend/all/all.go

@@ -2,7 +2,6 @@ package all
 
 import (
 	// Active file systems
-	_ "github.com/ncw/rclone/backend/adb"
 	_ "github.com/ncw/rclone/backend/alias"
 	_ "github.com/ncw/rclone/backend/amazonclouddrive"
 	_ "github.com/ncw/rclone/backend/azureblob"
@@ -17,6 +16,7 @@ import (
 	_ "github.com/ncw/rclone/backend/http"
 	_ "github.com/ncw/rclone/backend/hubic"
 	_ "github.com/ncw/rclone/backend/jottacloud"
+	_ "github.com/ncw/rclone/backend/koofr"
 	_ "github.com/ncw/rclone/backend/local"
 	_ "github.com/ncw/rclone/backend/mega"
 	_ "github.com/ncw/rclone/backend/onedrive"

backend/amazonclouddrive/amazonclouddrive.go

@@ -155,7 +155,7 @@ type Fs struct {
 	noAuthClient *http.Client       // unauthenticated http client
 	root         string             // the path we are working on
 	dirCache     *dircache.DirCache // Map of directory path to directory id
-	pacer        *pacer.Pacer       // pacer for API calls
+	pacer        *fs.Pacer          // pacer for API calls
 	trueRootID   string             // ID of true root directory
 	tokenRenewer *oauthutil.Renew   // renew the token on expiry
 }
@@ -273,7 +273,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		root:         root,
 		opt:          *opt,
 		c:            c,
-		pacer:        pacer.New().SetMinSleep(minSleep).SetPacer(pacer.AmazonCloudDrivePacer),
+		pacer:        fs.NewPacer(pacer.NewAmazonCloudDrive(pacer.MinSleep(minSleep))),
 		noAuthClient: fshttp.NewClient(fs.Config),
 	}
 	f.features = (&fs.Features{

backend/azureblob/azureblob.go

@@ -144,7 +144,7 @@ type Fs struct {
 	containerOKMu    sync.Mutex            // mutex to protect container OK
 	containerOK      bool                  // true if we have created the container
 	containerDeleted bool                  // true if we have deleted the container
-	pacer            *pacer.Pacer          // To pace and retry the API calls
+	pacer            *fs.Pacer             // To pace and retry the API calls
 	uploadToken      *pacer.TokenDispenser // control concurrency
 }
 
@@ -347,7 +347,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		opt:         *opt,
 		container:   container,
 		root:        directory,
-		pacer:       pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant).SetPacer(pacer.S3Pacer),
+		pacer:       fs.NewPacer(pacer.NewS3(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 		uploadToken: pacer.NewTokenDispenser(fs.Config.Transfers),
 		client:      fshttp.NewClient(fs.Config),
 	}
@@ -1386,16 +1386,16 @@ func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOptio
 	blob := o.getBlobReference()
 	httpHeaders := azblob.BlobHTTPHeaders{}
 	httpHeaders.ContentType = fs.MimeType(o)
-	// Multipart upload doesn't support MD5 checksums at put block calls, hence calculate
-	// MD5 only for PutBlob requests
-	if size < int64(o.fs.opt.UploadCutoff) {
-		if sourceMD5, _ := src.Hash(hash.MD5); sourceMD5 != "" {
-			sourceMD5bytes, err := hex.DecodeString(sourceMD5)
-			if err == nil {
-				httpHeaders.ContentMD5 = sourceMD5bytes
-			} else {
-				fs.Debugf(o, "Failed to decode %q as MD5: %v", sourceMD5, err)
-			}
+	// Compute the Content-MD5 of the file, for multiparts uploads it
+	// will be set in PutBlockList API call using the 'x-ms-blob-content-md5' header
+	// Note: If multipart, a MD5 checksum will also be computed for each uploaded block
+	// 		 in order to validate its integrity during transport
+	if sourceMD5, _ := src.Hash(hash.MD5); sourceMD5 != "" {
+		sourceMD5bytes, err := hex.DecodeString(sourceMD5)
+		if err == nil {
+			httpHeaders.ContentMD5 = sourceMD5bytes
+		} else {
+			fs.Debugf(o, "Failed to decode %q as MD5: %v", sourceMD5, err)
 		}
 	}
 

backend/b2/b2.go

@@ -167,7 +167,7 @@ type Fs struct {
 	uploadMu      sync.Mutex                   // lock for upload variable
 	uploads       []*api.GetUploadURLResponse  // result of get upload URL calls
 	authMu        sync.Mutex                   // lock for authorizing the account
-	pacer         *pacer.Pacer                 // To pace and retry the API calls
+	pacer         *fs.Pacer                    // To pace and retry the API calls
 	bufferTokens  chan []byte                  // control concurrency of multipart uploads
 }
 
@@ -251,13 +251,7 @@ func (f *Fs) shouldRetryNoReauth(resp *http.Response, err error) (bool, error) {
 				fs.Errorf(f, "Malformed %s header %q: %v", retryAfterHeader, retryAfterString, err)
 			}
 		}
-		retryAfterDuration := time.Duration(retryAfter) * time.Second
-		if f.pacer.GetSleep() < retryAfterDuration {
-			fs.Debugf(f, "Setting sleep to %v after error: %v", retryAfterDuration, err)
-			// We set 1/2 the value here because the pacer will double it immediately
-			f.pacer.SetSleep(retryAfterDuration / 2)
-		}
-		return true, err
+		return true, pacer.RetryAfterError(err, time.Duration(retryAfter)*time.Second)
 	}
 	return fserrors.ShouldRetry(err) || fserrors.ShouldRetryHTTP(resp, retryErrorCodes), err
 }
@@ -363,7 +357,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		bucket: bucket,
 		root:   directory,
 		srv:    rest.NewClient(fshttp.NewClient(fs.Config)).SetErrorHandler(errorHandler),
-		pacer:  pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer:  fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.features = (&fs.Features{
 		ReadMimeType:  true,

backend/box/box.go

@@ -111,7 +111,7 @@ type Fs struct {
 	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
+	pacer        *fs.Pacer             // pacer for API calls
 	tokenRenewer *oauthutil.Renew      // renew the token on expiry
 	uploadToken  *pacer.TokenDispenser // control concurrency
 }
@@ -260,7 +260,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		root:        root,
 		opt:         *opt,
 		srv:         rest.NewClient(oAuthClient).SetRoot(rootURL),
-		pacer:       pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer:       fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 		uploadToken: pacer.NewTokenDispenser(fs.Config.Transfers),
 	}
 	f.features = (&fs.Features{

backend/drive/drive.go

@@ -186,10 +186,10 @@ func init() {
 		},
 		Options: []fs.Option{{
 			Name: config.ConfigClientID,
-			Help: "Google Application Client Id\nLeave blank normally.",
+			Help: "Google Application Client Id\nSetting your own is recommended.\nSee https://rclone.org/drive/#making-your-own-client-id for how to create your own.\nIf you leave this blank, it will use an internal key which is low performance.",
 		}, {
 			Name: config.ConfigClientSecret,
-			Help: "Google Application Client Secret\nLeave blank normally.",
+			Help: "Google Application Client Secret\nSetting your own is recommended.",
 		}, {
 			Name: "scope",
 			Help: "Scope that rclone should use when requesting access from drive.",
@@ -426,7 +426,7 @@ type Fs struct {
 	client           *http.Client       // authorized client
 	rootFolderID     string             // the id of the root folder
 	dirCache         *dircache.DirCache // Map of directory path to directory id
-	pacer            *pacer.Pacer       // To pace the API calls
+	pacer            *fs.Pacer          // To pace the API calls
 	exportExtensions []string           // preferred extensions to download docs
 	importMimeTypes  []string           // MIME types to convert to docs
 	isTeamDrive      bool               // true if this is a team drive
@@ -676,28 +676,33 @@ func isPowerOfTwo(x int64) bool {
 }
 
 // add a charset parameter to all text/* MIME types
-func fixMimeType(mimeType string) string {
-	mediaType, param, err := mime.ParseMediaType(mimeType)
+func fixMimeType(mimeTypeIn string) string {
+	if mimeTypeIn == "" {
+		return ""
+	}
+	mediaType, param, err := mime.ParseMediaType(mimeTypeIn)
 	if err != nil {
-		return mimeType
+		return mimeTypeIn
 	}
-	if strings.HasPrefix(mimeType, "text/") && param["charset"] == "" {
+	mimeTypeOut := mimeTypeIn
+	if strings.HasPrefix(mediaType, "text/") && param["charset"] == "" {
 		param["charset"] = "utf-8"
-		mimeType = mime.FormatMediaType(mediaType, param)
+		mimeTypeOut = mime.FormatMediaType(mediaType, param)
 	}
-	return mimeType
+	if mimeTypeOut == "" {
+		panic(errors.Errorf("unable to fix MIME type %q", mimeTypeIn))
+	}
+	return mimeTypeOut
 }
-func fixMimeTypeMap(m map[string][]string) map[string][]string {
-	for _, v := range m {
+func fixMimeTypeMap(in map[string][]string) (out map[string][]string) {
+	out = make(map[string][]string, len(in))
+	for k, v := range in {
 		for i, mt := range v {
-			fixed := fixMimeType(mt)
-			if fixed == "" {
-				panic(errors.Errorf("unable to fix MIME type %q", mt))
-			}
-			v[i] = fixed
+			v[i] = fixMimeType(mt)
 		}
+		out[fixMimeType(k)] = v
 	}
-	return m
+	return out
 }
 func isInternalMimeType(mimeType string) bool {
 	return strings.HasPrefix(mimeType, "application/vnd.google-apps.")
@@ -789,8 +794,8 @@ func configTeamDrive(opt *Options, m configmap.Mapper, name string) error {
 }
 
 // newPacer makes a pacer configured for drive
-func newPacer(opt *Options) *pacer.Pacer {
-	return pacer.New().SetMinSleep(time.Duration(opt.PacerMinSleep)).SetBurst(opt.PacerBurst).SetPacer(pacer.GoogleDrivePacer)
+func newPacer(opt *Options) *fs.Pacer {
+	return fs.NewPacer(pacer.NewGoogleDrive(pacer.MinSleep(opt.PacerMinSleep), pacer.Burst(opt.PacerBurst)))
 }
 
 func getServiceAccountClient(opt *Options, credentialsData []byte) (*http.Client, error) {
@@ -902,6 +907,7 @@ func NewFs(name, path string, m configmap.Mapper) (fs.Fs, error) {
 		ReadMimeType:            true,
 		WriteMimeType:           true,
 		CanHaveEmptyDirectories: true,
+		ServerSideAcrossConfigs: true,
 	}).Fill(f)
 
 	// Create a new authorized Drive client.
@@ -2430,6 +2436,10 @@ func (o *baseObject) httpResponse(url, method string, options []fs.OpenOption) (
 		return req, nil, err
 	}
 	fs.OpenOptionAddHTTPHeaders(req.Header, options)
+	if o.bytes == 0 {
+		// Don't supply range requests for 0 length objects as they always fail
+		delete(req.Header, "Range")
+	}
 	err = o.fs.pacer.Call(func() (bool, error) {
 		res, err = o.fs.client.Do(req)
 		if err == nil {

backend/dropbox/dropbox.go

@@ -160,7 +160,7 @@ type Fs struct {
 	team           team.Client    // for the Teams API
 	slashRoot      string         // root with "/" prefix, lowercase
 	slashRootSlash string         // root with "/" prefix and postfix, lowercase
-	pacer          *pacer.Pacer   // To pace the API calls
+	pacer          *fs.Pacer      // To pace the API calls
 	ns             string         // The namespace we are using or "" for none
 }
 
@@ -209,7 +209,7 @@ func shouldRetry(err error) (bool, error) {
 	case auth.RateLimitAPIError:
 		if e.RateLimitError.RetryAfter > 0 {
 			fs.Debugf(baseErrString, "Too many requests or write operations. Trying again in %d seconds.", e.RateLimitError.RetryAfter)
-			time.Sleep(time.Duration(e.RateLimitError.RetryAfter) * time.Second)
+			err = pacer.RetryAfterError(err, time.Duration(e.RateLimitError.RetryAfter)*time.Second)
 		}
 		return true, err
 	}
@@ -273,7 +273,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 	f := &Fs{
 		name:  name,
 		opt:   *opt,
-		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	config := dropbox.Config{
 		LogLevel:        dropbox.LogOff, // logging in the SDK: LogOff, LogDebug, LogInfo

backend/googlecloudstorage/googlecloudstorage.go

@@ -16,6 +16,7 @@ FIXME Patch/Delete/Get isn't working with files with spaces in - giving 404 erro
 */
 
 import (
+	"context"
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
@@ -45,6 +46,8 @@ import (
 	"golang.org/x/oauth2"
 	"golang.org/x/oauth2/google"
 	"google.golang.org/api/googleapi"
+
+	// NOTE: This API is deprecated
 	storage "google.golang.org/api/storage/v1"
 )
 
@@ -144,6 +147,22 @@ func init() {
 				Value: "publicReadWrite",
 				Help:  "Project team owners get OWNER access, and all Users get WRITER access.",
 			}},
+		}, {
+			Name: "bucket_policy_only",
+			Help: `Access checks should use bucket-level IAM policies.
+
+If you want to upload objects to a bucket with Bucket Policy Only set
+then you will need to set this.
+
+When it is set, rclone:
+
+- ignores ACLs set on buckets
+- ignores ACLs set on objects
+- creates buckets with Bucket Policy Only set
+
+Docs: https://cloud.google.com/storage/docs/bucket-policy-only
+`,
+			Default: false,
 		}, {
 			Name: "location",
 			Help: "Location for the newly created buckets.",
@@ -241,6 +260,7 @@ type Options struct {
 	ServiceAccountCredentials string `config:"service_account_credentials"`
 	ObjectACL                 string `config:"object_acl"`
 	BucketACL                 string `config:"bucket_acl"`
+	BucketPolicyOnly          bool   `config:"bucket_policy_only"`
 	Location                  string `config:"location"`
 	StorageClass              string `config:"storage_class"`
 }
@@ -256,7 +276,7 @@ type Fs struct {
 	bucket     string           // the bucket we are working on
 	bucketOKMu sync.Mutex       // mutex to protect bucket OK
 	bucketOK   bool             // true if we have created the bucket
-	pacer      *pacer.Pacer     // To pace the API calls
+	pacer      *fs.Pacer        // To pace the API calls
 }
 
 // Object describes a storage object
@@ -381,7 +401,11 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 	} else {
 		oAuthClient, _, err = oauthutil.NewClient(name, m, storageConfig)
 		if err != nil {
-			return nil, errors.Wrap(err, "failed to configure Google Cloud Storage")
+			ctx := context.Background()
+			oAuthClient, err = google.DefaultClient(ctx, storage.DevstorageFullControlScope)
+			if err != nil {
+				return nil, errors.Wrap(err, "failed to configure Google Cloud Storage")
+			}
 		}
 	}
 
@@ -395,7 +419,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		bucket: bucket,
 		root:   directory,
 		opt:    *opt,
-		pacer:  pacer.New().SetMinSleep(minSleep).SetPacer(pacer.GoogleDrivePacer),
+		pacer:  fs.NewPacer(pacer.NewGoogleDrive(pacer.MinSleep(minSleep))),
 	}
 	f.features = (&fs.Features{
 		ReadMimeType:  true,
@@ -709,8 +733,19 @@ func (f *Fs) Mkdir(dir string) (err error) {
 		Location:     f.opt.Location,
 		StorageClass: f.opt.StorageClass,
 	}
+	if f.opt.BucketPolicyOnly {
+		bucket.IamConfiguration = &storage.BucketIamConfiguration{
+			BucketPolicyOnly: &storage.BucketIamConfigurationBucketPolicyOnly{
+				Enabled: true,
+			},
+		}
+	}
 	err = f.pacer.Call(func() (bool, error) {
-		_, err = f.svc.Buckets.Insert(f.opt.ProjectNumber, &bucket).PredefinedAcl(f.opt.BucketACL).Do()
+		insertBucket := f.svc.Buckets.Insert(f.opt.ProjectNumber, &bucket)
+		if !f.opt.BucketPolicyOnly {
+			insertBucket.PredefinedAcl(f.opt.BucketACL)
+		}
+		_, err = insertBucket.Do()
 		return shouldRetry(err)
 	})
 	if err == nil {
@@ -976,7 +1011,11 @@ func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOptio
 	}
 	var newObject *storage.Object
 	err = o.fs.pacer.CallNoRetry(func() (bool, error) {
-		newObject, err = o.fs.svc.Objects.Insert(o.fs.bucket, &object).Media(in, googleapi.ContentType("")).Name(object.Name).PredefinedAcl(o.fs.opt.ObjectACL).Do()
+		insertObject := o.fs.svc.Objects.Insert(o.fs.bucket, &object).Media(in, googleapi.ContentType("")).Name(object.Name)
+		if !o.fs.opt.BucketPolicyOnly {
+			insertObject.PredefinedAcl(o.fs.opt.ObjectACL)
+		}
+		newObject, err = insertObject.Do()
 		return shouldRetry(err)
 	})
 	if err != nil {

backend/jottacloud/jottacloud.go

@@ -190,7 +190,7 @@ type Fs struct {
 	endpointURL  string
 	srv          *rest.Client
 	apiSrv       *rest.Client
-	pacer        *pacer.Pacer
+	pacer        *fs.Pacer
 	tokenRenewer *oauthutil.Renew // renew the token on expiry
 }
 
@@ -381,6 +381,9 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 	rootIsDir := strings.HasSuffix(root, "/")
 	root = parsePath(root)
 
+	// add jottacloud to the long list of sites that don't follow the oauth spec correctly
+	oauth2.RegisterBrokenAuthHeaderProvider("https://www.jottacloud.com/")
+
 	// the oauth client for the api servers needs
 	// a filter to fix the grant_type issues (see above)
 	baseClient := fshttp.NewClient(fs.Config)
@@ -403,7 +406,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		opt:    *opt,
 		srv:    rest.NewClient(oAuthClient).SetRoot(rootURL),
 		apiSrv: rest.NewClient(oAuthClient).SetRoot(apiURL),
-		pacer:  pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer:  fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.features = (&fs.Features{
 		CaseInsensitive:         true,

backend/koofr/koofr.go

@@ -0,0 +1,589 @@
+package koofr
+
+import (
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"path"
+	"strings"
+	"time"
+
+	"github.com/ncw/rclone/fs"
+	"github.com/ncw/rclone/fs/config/configmap"
+	"github.com/ncw/rclone/fs/config/configstruct"
+	"github.com/ncw/rclone/fs/config/obscure"
+	"github.com/ncw/rclone/fs/hash"
+
+	httpclient "github.com/koofr/go-httpclient"
+	koofrclient "github.com/koofr/go-koofrclient"
+)
+
+// Register Fs with rclone
+func init() {
+	fs.Register(&fs.RegInfo{
+		Name:        "koofr",
+		Description: "Koofr",
+		NewFs:       NewFs,
+		Options: []fs.Option{
+			{
+				Name:     "endpoint",
+				Help:     "The Koofr API endpoint to use",
+				Default:  "https://app.koofr.net",
+				Required: true,
+				Advanced: true,
+			}, {
+				Name:     "mountid",
+				Help:     "Mount ID of the mount to use. If omitted, the primary mount is used.",
+				Required: false,
+				Default:  "",
+				Advanced: true,
+			}, {
+				Name:     "user",
+				Help:     "Your Koofr user name",
+				Required: true,
+			}, {
+				Name:       "password",
+				Help:       "Your Koofr password for rclone (generate one at https://app.koofr.net/app/admin/preferences/password)",
+				IsPassword: true,
+				Required:   true,
+			},
+		},
+	})
+}
+
+// Options represent the configuration of the Koofr backend
+type Options struct {
+	Endpoint string `config:"endpoint"`
+	MountID  string `config:"mountid"`
+	User     string `config:"user"`
+	Password string `config:"password"`
+}
+
+// A Fs is a representation of a remote Koofr Fs
+type Fs struct {
+	name     string
+	mountID  string
+	root     string
+	opt      Options
+	features *fs.Features
+	client   *koofrclient.KoofrClient
+}
+
+// An Object on the remote Koofr Fs
+type Object struct {
+	fs     *Fs
+	remote string
+	info   koofrclient.FileInfo
+}
+
+func base(pth string) string {
+	rv := path.Base(pth)
+	if rv == "" || rv == "." {
+		rv = "/"
+	}
+	return rv
+}
+
+func dir(pth string) string {
+	rv := path.Dir(pth)
+	if rv == "" || rv == "." {
+		rv = "/"
+	}
+	return rv
+}
+
+// String returns a string representation of the remote Object
+func (o *Object) String() string {
+	return o.remote
+}
+
+// Remote returns the remote path of the Object, relative to Fs root
+func (o *Object) Remote() string {
+	return o.remote
+}
+
+// ModTime returns the modification time of the Object
+func (o *Object) ModTime() time.Time {
+	return time.Unix(o.info.Modified/1000, (o.info.Modified%1000)*1000*1000)
+}
+
+// Size return the size of the Object in bytes
+func (o *Object) Size() int64 {
+	return o.info.Size
+}
+
+// Fs returns a reference to the Koofr Fs containing the Object
+func (o *Object) Fs() fs.Info {
+	return o.fs
+}
+
+// Hash returns an MD5 hash of the Object
+func (o *Object) Hash(typ hash.Type) (string, error) {
+	if typ == hash.MD5 {
+		return o.info.Hash, nil
+	}
+	return "", nil
+}
+
+// fullPath returns full path of the remote Object (including Fs root)
+func (o *Object) fullPath() string {
+	return o.fs.fullPath(o.remote)
+}
+
+// Storable returns true if the Object is storable
+func (o *Object) Storable() bool {
+	return true
+}
+
+// SetModTime is not supported
+func (o *Object) SetModTime(mtime time.Time) error {
+	return nil
+}
+
+// Open opens the Object for reading
+func (o *Object) Open(options ...fs.OpenOption) (io.ReadCloser, error) {
+	var sOff, eOff int64 = 0, -1
+
+	for _, option := range options {
+		switch x := option.(type) {
+		case *fs.SeekOption:
+			sOff = x.Offset
+		case *fs.RangeOption:
+			sOff = x.Start
+			eOff = x.End
+		default:
+			if option.Mandatory() {
+				fs.Logf(o, "Unsupported mandatory option: %v", option)
+			}
+		}
+	}
+	if sOff == 0 && eOff < 0 {
+		return o.fs.client.FilesGet(o.fs.mountID, o.fullPath())
+	}
+	if sOff < 0 {
+		sOff = o.Size() - eOff
+		eOff = o.Size()
+	}
+	if eOff > o.Size() {
+		eOff = o.Size()
+	}
+	span := &koofrclient.FileSpan{
+		Start: sOff,
+		End:   eOff,
+	}
+	return o.fs.client.FilesGetRange(o.fs.mountID, o.fullPath(), span)
+}
+
+// Update updates the Object contents
+func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
+	putopts := &koofrclient.PutFilter{
+		ForceOverwrite:    true,
+		NoRename:          true,
+		IgnoreNonExisting: true,
+	}
+	fullPath := o.fullPath()
+	dirPath := dir(fullPath)
+	name := base(fullPath)
+	err := o.fs.mkdir(dirPath)
+	if err != nil {
+		return err
+	}
+	info, err := o.fs.client.FilesPutOptions(o.fs.mountID, dirPath, name, in, putopts)
+	if err != nil {
+		return err
+	}
+	o.info = *info
+	return nil
+}
+
+// Remove deletes the remote Object
+func (o *Object) Remove() error {
+	return o.fs.client.FilesDelete(o.fs.mountID, o.fullPath())
+}
+
+// Name returns the name of the Fs
+func (f *Fs) Name() string {
+	return f.name
+}
+
+// Root returns the root path of the Fs
+func (f *Fs) Root() string {
+	return f.root
+}
+
+// String returns a string representation of the Fs
+func (f *Fs) String() string {
+	return "koofr:" + f.mountID + ":" + f.root
+}
+
+// Features returns the optional features supported by this Fs
+func (f *Fs) Features() *fs.Features {
+	return f.features
+}
+
+// Precision denotes that setting modification times is not supported
+func (f *Fs) Precision() time.Duration {
+	return fs.ModTimeNotSupported
+}
+
+// Hashes returns a set of hashes are Provided by the Fs
+func (f *Fs) Hashes() hash.Set {
+	return hash.Set(hash.MD5)
+}
+
+// fullPath constructs a full, absolute path from a Fs root relative path,
+func (f *Fs) fullPath(part string) string {
+	return path.Join("/", f.root, part)
+}
+
+// NewFs constructs a new filesystem given a root path and configuration options
+func NewFs(name, root string, m configmap.Mapper) (ff fs.Fs, err error) {
+	opt := new(Options)
+	err = configstruct.Set(m, opt)
+	if err != nil {
+		return nil, err
+	}
+	pass, err := obscure.Reveal(opt.Password)
+	if err != nil {
+		return nil, err
+	}
+	client := koofrclient.NewKoofrClient(opt.Endpoint, false)
+	basicAuth := fmt.Sprintf("Basic %s",
+		base64.StdEncoding.EncodeToString([]byte(opt.User+":"+pass)))
+	client.HTTPClient.Headers.Set("Authorization", basicAuth)
+	mounts, err := client.Mounts()
+	if err != nil {
+		return nil, err
+	}
+	f := &Fs{
+		name:   name,
+		root:   root,
+		opt:    *opt,
+		client: client,
+	}
+	f.features = (&fs.Features{
+		CaseInsensitive:         true,
+		DuplicateFiles:          false,
+		BucketBased:             false,
+		CanHaveEmptyDirectories: true,
+	}).Fill(f)
+	for _, m := range mounts {
+		if opt.MountID != "" {
+			if m.Id == opt.MountID {
+				f.mountID = m.Id
+				break
+			}
+		} else if m.IsPrimary {
+			f.mountID = m.Id
+			break
+		}
+	}
+	if f.mountID == "" {
+		if opt.MountID == "" {
+			return nil, errors.New("Failed to find primary mount")
+		}
+		return nil, errors.New("Failed to find mount " + opt.MountID)
+	}
+	rootFile, err := f.client.FilesInfo(f.mountID, "/"+f.root)
+	if err == nil && rootFile.Type != "dir" {
+		f.root = dir(f.root)
+		err = fs.ErrorIsFile
+	} else {
+		err = nil
+	}
+	return f, err
+}
+
+// List returns a list of items in a directory
+func (f *Fs) List(dir string) (entries fs.DirEntries, err error) {
+	files, err := f.client.FilesList(f.mountID, f.fullPath(dir))
+	if err != nil {
+		return nil, translateErrorsDir(err)
+	}
+	entries = make([]fs.DirEntry, len(files))
+	for i, file := range files {
+		if file.Type == "dir" {
+			entries[i] = fs.NewDir(path.Join(dir, file.Name), time.Unix(0, 0))
+		} else {
+			entries[i] = &Object{
+				fs:     f,
+				info:   file,
+				remote: path.Join(dir, file.Name),
+			}
+		}
+	}
+	return entries, nil
+}
+
+// NewObject creates a new remote Object for a given remote path
+func (f *Fs) NewObject(remote string) (obj fs.Object, err error) {
+	info, err := f.client.FilesInfo(f.mountID, f.fullPath(remote))
+	if err != nil {
+		return nil, translateErrorsObject(err)
+	}
+	if info.Type == "dir" {
+		return nil, fs.ErrorNotAFile
+	}
+	return &Object{
+		fs:     f,
+		info:   info,
+		remote: remote,
+	}, nil
+}
+
+// Put updates a remote Object
+func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (obj fs.Object, err error) {
+	putopts := &koofrclient.PutFilter{
+		ForceOverwrite:    true,
+		NoRename:          true,
+		IgnoreNonExisting: true,
+	}
+	fullPath := f.fullPath(src.Remote())
+	dirPath := dir(fullPath)
+	name := base(fullPath)
+	err = f.mkdir(dirPath)
+	if err != nil {
+		return nil, err
+	}
+	info, err := f.client.FilesPutOptions(f.mountID, dirPath, name, in, putopts)
+	if err != nil {
+		return nil, translateErrorsObject(err)
+	}
+	return &Object{
+		fs:     f,
+		info:   *info,
+		remote: src.Remote(),
+	}, nil
+}
+
+// PutStream updates a remote Object with a stream of unknown size
+func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
+	return f.Put(in, src, options...)
+}
+
+// isBadRequest is a predicate which holds true iff the error returned was
+// HTTP status 400
+func isBadRequest(err error) bool {
+	switch err := err.(type) {
+	case httpclient.InvalidStatusError:
+		if err.Got == http.StatusBadRequest {
+			return true
+		}
+	}
+	return false
+}
+
+// translateErrorsDir translates koofr errors to rclone errors (for a dir
+// operation)
+func translateErrorsDir(err error) error {
+	switch err := err.(type) {
+	case httpclient.InvalidStatusError:
+		if err.Got == http.StatusNotFound {
+			return fs.ErrorDirNotFound
+		}
+	}
+	return err
+}
+
+// translatesErrorsObject translates Koofr errors to rclone errors (for an object operation)
+func translateErrorsObject(err error) error {
+	switch err := err.(type) {
+	case httpclient.InvalidStatusError:
+		if err.Got == http.StatusNotFound {
+			return fs.ErrorObjectNotFound
+		}
+	}
+	return err
+}
+
+// mkdir creates a directory at the given remote path. Creates ancestors if
+// neccessary
+func (f *Fs) mkdir(fullPath string) error {
+	if fullPath == "/" {
+		return nil
+	}
+	info, err := f.client.FilesInfo(f.mountID, fullPath)
+	if err == nil && info.Type == "dir" {
+		return nil
+	}
+	err = translateErrorsDir(err)
+	if err != nil && err != fs.ErrorDirNotFound {
+		return err
+	}
+	dirs := strings.Split(fullPath, "/")
+	parent := "/"
+	for _, part := range dirs {
+		if part == "" {
+			continue
+		}
+		info, err = f.client.FilesInfo(f.mountID, path.Join(parent, part))
+		if err != nil || info.Type != "dir" {
+			err = translateErrorsDir(err)
+			if err != nil && err != fs.ErrorDirNotFound {
+				return err
+			}
+			err = f.client.FilesNewFolder(f.mountID, parent, part)
+			if err != nil && !isBadRequest(err) {
+				return err
+			}
+		}
+		parent = path.Join(parent, part)
+	}
+	return nil
+}
+
+// Mkdir creates a directory at the given remote path. Creates ancestors if
+// necessary
+func (f *Fs) Mkdir(dir string) error {
+	fullPath := f.fullPath(dir)
+	return f.mkdir(fullPath)
+}
+
+// Rmdir removes an (empty) directory at the given remote path
+func (f *Fs) Rmdir(dir string) error {
+	files, err := f.client.FilesList(f.mountID, f.fullPath(dir))
+	if err != nil {
+		return translateErrorsDir(err)
+	}
+	if len(files) > 0 {
+		return fs.ErrorDirectoryNotEmpty
+	}
+	err = f.client.FilesDelete(f.mountID, f.fullPath(dir))
+	if err != nil {
+		return translateErrorsDir(err)
+	}
+	return nil
+}
+
+// Copy copies a remote Object to the given path
+func (f *Fs) Copy(src fs.Object, remote string) (fs.Object, error) {
+	dstFullPath := f.fullPath(remote)
+	dstDir := dir(dstFullPath)
+	err := f.mkdir(dstDir)
+	if err != nil {
+		return nil, fs.ErrorCantCopy
+	}
+	err = f.client.FilesCopy((src.(*Object)).fs.mountID,
+		(src.(*Object)).fs.fullPath((src.(*Object)).remote),
+		f.mountID, dstFullPath)
+	if err != nil {
+		return nil, fs.ErrorCantCopy
+	}
+	return f.NewObject(remote)
+}
+
+// Move moves a remote Object to the given path
+func (f *Fs) Move(src fs.Object, remote string) (fs.Object, error) {
+	srcObj := src.(*Object)
+	dstFullPath := f.fullPath(remote)
+	dstDir := dir(dstFullPath)
+	err := f.mkdir(dstDir)
+	if err != nil {
+		return nil, fs.ErrorCantMove
+	}
+	err = f.client.FilesMove(srcObj.fs.mountID,
+		srcObj.fs.fullPath(srcObj.remote), f.mountID, dstFullPath)
+	if err != nil {
+		return nil, fs.ErrorCantMove
+	}
+	return f.NewObject(remote)
+}
+
+// DirMove moves a remote directory to the given path
+func (f *Fs) DirMove(src fs.Fs, srcRemote, dstRemote string) error {
+	srcFs := src.(*Fs)
+	srcFullPath := srcFs.fullPath(srcRemote)
+	dstFullPath := f.fullPath(dstRemote)
+	if srcFs.mountID == f.mountID && srcFullPath == dstFullPath {
+		return fs.ErrorDirExists
+	}
+	dstDir := dir(dstFullPath)
+	err := f.mkdir(dstDir)
+	if err != nil {
+		return fs.ErrorCantDirMove
+	}
+	err = f.client.FilesMove(srcFs.mountID, srcFullPath, f.mountID, dstFullPath)
+	if err != nil {
+		return fs.ErrorCantDirMove
+	}
+	return nil
+}
+
+// About reports space usage (with a MB precision)
+func (f *Fs) About() (*fs.Usage, error) {
+	mount, err := f.client.MountsDetails(f.mountID)
+	if err != nil {
+		return nil, err
+	}
+	return &fs.Usage{
+		Total:   fs.NewUsageValue(mount.SpaceTotal * 1024 * 1024),
+		Used:    fs.NewUsageValue(mount.SpaceUsed * 1024 * 1024),
+		Trashed: nil,
+		Other:   nil,
+		Free:    fs.NewUsageValue((mount.SpaceTotal - mount.SpaceUsed) * 1024 * 1024),
+		Objects: nil,
+	}, nil
+}
+
+// Purge purges the complete Fs
+func (f *Fs) Purge() error {
+	err := translateErrorsDir(f.client.FilesDelete(f.mountID, f.fullPath("")))
+	return err
+}
+
+// linkCreate is a Koofr API request for creating a public link
+type linkCreate struct {
+	Path string `json:"path"`
+}
+
+// link is a Koofr API response to creating a public link
+type link struct {
+	ID               string `json:"id"`
+	Name             string `json:"name"`
+	Path             string `json:"path"`
+	Counter          int64  `json:"counter"`
+	URL              string `json:"url"`
+	ShortURL         string `json:"shortUrl"`
+	Hash             string `json:"hash"`
+	Host             string `json:"host"`
+	HasPassword      bool   `json:"hasPassword"`
+	Password         string `json:"password"`
+	ValidFrom        int64  `json:"validFrom"`
+	ValidTo          int64  `json:"validTo"`
+	PasswordRequired bool   `json:"passwordRequired"`
+}
+
+// createLink makes a Koofr API call to create a public link
+func createLink(c *koofrclient.KoofrClient, mountID string, path string) (*link, error) {
+	linkCreate := linkCreate{
+		Path: path,
+	}
+	linkData := link{}
+
+	request := httpclient.RequestData{
+		Method:         "POST",
+		Path:           "/api/v2/mounts/" + mountID + "/links",
+		ExpectedStatus: []int{http.StatusOK, http.StatusCreated},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       linkCreate,
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &linkData,
+	}
+
+	_, err := c.Request(&request)
+	if err != nil {
+		return nil, err
+	}
+	return &linkData, nil
+}
+
+// PublicLink creates a public link to the remote path
+func (f *Fs) PublicLink(remote string) (string, error) {
+	linkData, err := createLink(f.client, f.mountID, f.fullPath(remote))
+	if err != nil {
+		return "", translateErrorsDir(err)
+	}
+	return linkData.ShortURL, nil
+}

backend/koofr/koofr_test.go

@@ -0,0 +1,14 @@
+package koofr_test
+
+import (
+	"testing"
+
+	"github.com/ncw/rclone/fstest/fstests"
+)
+
+// TestIntegration runs integration tests against the remote
+func TestIntegration(t *testing.T) {
+	fstests.Run(t, &fstests.Opt{
+		RemoteName: "TestKoofr:",
+	})
+}

backend/mega/mega.go

@@ -98,7 +98,7 @@ type Fs struct {
 	opt        Options      // parsed config options
 	features   *fs.Features // optional features
 	srv        *mega.Mega   // the connection to the server
-	pacer      *pacer.Pacer // pacer for API calls
+	pacer      *fs.Pacer    // pacer for API calls
 	rootNodeMu sync.Mutex   // mutex for _rootNode
 	_rootNode  *mega.Node   // root node - call findRoot to use this
 	mkdirMu    sync.Mutex   // used to serialize calls to mkdir / rmdir
@@ -217,7 +217,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		root:  root,
 		opt:   *opt,
 		srv:   srv,
-		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.features = (&fs.Features{
 		DuplicateFiles:          true,

backend/onedrive/onedrive.go

@@ -261,7 +261,7 @@ type Fs struct {
 	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
+	pacer        *fs.Pacer          // pacer for API calls
 	tokenRenewer *oauthutil.Renew   // renew the token on expiry
 	driveID      string             // ID to use for querying Microsoft Graph
 	driveType    string             // https://developer.microsoft.com/en-us/graph/docs/api-reference/v1.0/resources/drive
@@ -475,7 +475,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		driveID:   opt.DriveID,
 		driveType: opt.DriveType,
 		srv:       rest.NewClient(oAuthClient).SetRoot(graphURL + "/drives/" + opt.DriveID),
-		pacer:     pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer:     fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.features = (&fs.Features{
 		CaseInsensitive:         true,

backend/opendrive/opendrive.go

@@ -65,7 +65,7 @@ type Fs struct {
 	opt      Options            // parsed options
 	features *fs.Features       // optional features
 	srv      *rest.Client       // the connection to the server
-	pacer    *pacer.Pacer       // To pace and retry the API calls
+	pacer    *fs.Pacer          // To pace and retry the API calls
 	session  UserSessionInfo    // contains the session data
 	dirCache *dircache.DirCache // Map of directory path to directory id
 }
@@ -144,7 +144,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		root:  root,
 		opt:   *opt,
 		srv:   rest.NewClient(fshttp.NewClient(fs.Config)).SetErrorHandler(errorHandler),
-		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 
 	f.dirCache = dircache.New(root, "0", f)

backend/pcloud/pcloud.go

@@ -95,7 +95,7 @@ type Fs struct {
 	features     *fs.Features       // optional features
 	srv          *rest.Client       // the connection to the server
 	dirCache     *dircache.DirCache // Map of directory path to directory id
-	pacer        *pacer.Pacer       // pacer for API calls
+	pacer        *fs.Pacer          // pacer for API calls
 	tokenRenewer *oauthutil.Renew   // renew the token on expiry
 }
 
@@ -254,7 +254,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		root:  root,
 		opt:   *opt,
 		srv:   rest.NewClient(oAuthClient).SetRoot(rootURL),
-		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.features = (&fs.Features{
 		CaseInsensitive:         false,

backend/s3/s3.go

@@ -782,7 +782,7 @@ type Fs struct {
 	bucketOKMu    sync.Mutex       // mutex to protect bucket OK
 	bucketOK      bool             // true if we have created the bucket
 	bucketDeleted bool             // true if we have deleted the bucket
-	pacer         *pacer.Pacer     // To pace the API calls
+	pacer         *fs.Pacer        // To pace the API calls
 	srv           *http.Client     // a plain http client
 }
 
@@ -1055,7 +1055,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		c:      c,
 		bucket: bucket,
 		ses:    ses,
-		pacer:  pacer.New().SetMinSleep(minSleep).SetPacer(pacer.S3Pacer),
+		pacer:  fs.NewPacer(pacer.NewS3(pacer.MinSleep(minSleep))),
 		srv:    fshttp.NewClient(fs.Config),
 	}
 	f.features = (&fs.Features{

backend/sftp/sftp.go

@@ -427,6 +427,12 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		sshConfig.Auth = append(sshConfig.Auth, ssh.Password(clearpass))
 	}
 
+	return NewFsWithConnection(name, root, opt, sshConfig)
+}
+
+// NewFsWithConnection creates a new Fs object from the name and root and a ssh.ClientConfig. It connects to
+// the host specified in the ssh.ClientConfig
+func NewFsWithConnection(name string, root string, opt *Options, sshConfig *ssh.ClientConfig) (fs.Fs, error) {
 	f := &Fs{
 		name:      name,
 		root:      root,

backend/swift/swift.go

@@ -216,7 +216,7 @@ type Fs struct {
 	containerOK       bool              // true if we have created the container
 	segmentsContainer string            // container to store the segments (if any) in
 	noCheckContainer  bool              // don't check the container before creating it
-	pacer             *pacer.Pacer      // To pace the API calls
+	pacer             *fs.Pacer         // To pace the API calls
 }
 
 // Object describes a swift object
@@ -401,7 +401,7 @@ func NewFsWithConnection(opt *Options, name, root string, c *swift.Connection, n
 		segmentsContainer: container + "_segments",
 		root:              directory,
 		noCheckContainer:  noCheckContainer,
-		pacer:             pacer.New().SetMinSleep(minSleep).SetPacer(pacer.S3Pacer),
+		pacer:             fs.NewPacer(pacer.NewS3(pacer.MinSleep(minSleep))),
 	}
 	f.features = (&fs.Features{
 		ReadMimeType:  true,

backend/webdav/webdav.go

@@ -101,7 +101,7 @@ type Fs struct {
 	endpoint           *url.URL      // URL of the host
 	endpointURL        string        // endpoint as a string
 	srv                *rest.Client  // the connection to the one drive server
-	pacer              *pacer.Pacer  // pacer for API calls
+	pacer              *fs.Pacer     // pacer for API calls
 	precision          time.Duration // mod time precision
 	canStream          bool          // set if can stream
 	useOCMtime         bool          // set if can use X-OC-Mtime
@@ -318,7 +318,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		endpoint:    u,
 		endpointURL: u.String(),
 		srv:         rest.NewClient(fshttp.NewClient(fs.Config)).SetRoot(u.String()),
-		pacer:       pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer:       fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 		precision:   fs.ModTimeNotSupported,
 	}
 	f.features = (&fs.Features{

backend/yandex/yandex.go

@@ -93,7 +93,7 @@ type Fs struct {
 	opt      Options      // parsed options
 	features *fs.Features // optional features
 	srv      *rest.Client // the connection to the yandex server
-	pacer    *pacer.Pacer // pacer for API calls
+	pacer    *fs.Pacer    // pacer for API calls
 	diskRoot string       // root path with "disk:/" container name
 }
 
@@ -269,7 +269,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 		name:  name,
 		opt:   *opt,
 		srv:   rest.NewClient(oAuthClient).SetRoot(rootURL),
-		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
+		pacer: fs.NewPacer(pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
 	}
 	f.setRoot(root)
 	f.features = (&fs.Features{

bin/get-github-release.go

@@ -17,14 +17,18 @@ import (
 	"io/ioutil"
 	"log"
 	"net/http"
+	"net/url"
 	"os"
 	"os/exec"
+	"path"
 	"path/filepath"
 	"regexp"
 	"runtime"
 	"strings"
 	"time"
 
+	"github.com/ncw/rclone/lib/rest"
+	"golang.org/x/net/html"
 	"golang.org/x/sys/unix"
 )
 
@@ -33,6 +37,7 @@ var (
 	install = flag.Bool("install", false, "Install the downloaded package using sudo dpkg -i.")
 	extract = flag.String("extract", "", "Extract the named executable from the .tar.gz and install into bindir.")
 	bindir  = flag.String("bindir", defaultBinDir(), "Directory to install files downloaded with -extract.")
+	useAPI  = flag.Bool("use-api", false, "Use the API for finding the release instead of scraping the page.")
 	// Globals
 	matchProject = regexp.MustCompile(`^([\w-]+)/([\w-]+)$`)
 	osAliases    = map[string][]string{
@@ -209,6 +214,55 @@ func getAsset(project string, matchName *regexp.Regexp) (string, string) {
 	return "", ""
 }
 
+// Get an asset URL and name by scraping the downloads page
+//
+// This doesn't use the API so isn't rate limited when not using GITHUB login details
+func getAssetFromReleasesPage(project string, matchName *regexp.Regexp) (assetURL string, assetName string) {
+	baseURL := "https://github.com/" + project + "/releases"
+	log.Printf("Fetching asset info for %q from %q", project, baseURL)
+	base, err := url.Parse(baseURL)
+	if err != nil {
+		log.Fatalf("URL Parse failed: %v", err)
+	}
+	resp, err := http.Get(baseURL)
+	if err != nil {
+		log.Fatalf("Failed to fetch release info %q: %v", baseURL, err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		log.Printf("Error: %s", readBody(resp.Body))
+		log.Fatalf("Bad status %d when fetching %q release info: %s", resp.StatusCode, baseURL, resp.Status)
+	}
+	doc, err := html.Parse(resp.Body)
+	if err != nil {
+		log.Fatalf("Failed to parse web page: %v", err)
+	}
+	var walk func(*html.Node)
+	walk = func(n *html.Node) {
+		if n.Type == html.ElementNode && n.Data == "a" {
+			for _, a := range n.Attr {
+				if a.Key == "href" {
+					if name := path.Base(a.Val); matchName.MatchString(name) && isOurOsArch(name) {
+						if u, err := rest.URLJoin(base, a.Val); err == nil {
+							assetName = name
+							assetURL = u.String()
+						}
+					}
+					break
+				}
+			}
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			walk(c)
+		}
+	}
+	walk(doc)
+	if assetName == "" || assetURL == "" {
+		log.Fatalf("Didn't find URL in page")
+	}
+	return assetURL, assetName
+}
+
 // isOurOsArch returns true if s contains our OS and our Arch
 func isOurOsArch(s string) bool {
 	s = strings.ToLower(s)
@@ -346,7 +400,12 @@ func main() {
 		log.Fatalf("Invalid regexp for name %q: %v", nameRe, err)
 	}
 
-	assetURL, assetName := getAsset(project, matchName)
+	var assetURL, assetName string
+	if *useAPI {
+		assetURL, assetName = getAsset(project, matchName)
+	} else {
+		assetURL, assetName = getAssetFromReleasesPage(project, matchName)
+	}
 	fileName := filepath.Join(os.TempDir(), assetName)
 	getFile(assetURL, fileName)
 

bin/make_manual.py

@@ -36,6 +36,7 @@ docs = [
     "http.md",
     "hubic.md",
     "jottacloud.md",
+    "koofr.md",
     "mega.md",
     "azureblob.md",
     "onedrive.md",

cmd/cmd.go

@@ -341,8 +341,7 @@ func initConfig() {
 	configflags.SetFlags()
 
 	// Load filters
-	var err error
-	filter.Active, err = filter.NewFilter(&filterflags.Opt)
+	err := filterflags.Reload()
 	if err != nil {
 		log.Fatalf("Failed to load filters: %v", err)
 	}

cmd/copy/copy.go

@@ -7,8 +7,13 @@ import (
 	"github.com/spf13/cobra"
 )
 
+var (
+	createEmptySrcDirs = false
+)
+
 func init() {
 	cmd.Root.AddCommand(commandDefintion)
+	commandDefintion.Flags().BoolVarP(&createEmptySrcDirs, "create-empty-src-dirs", "", createEmptySrcDirs, "Create empty source dirs on destination after copy")
 }
 
 var commandDefintion = &cobra.Command{
@@ -69,7 +74,7 @@ changed recently very efficiently like this:
 		fsrc, srcFileName, fdst := cmd.NewFsSrcFileDst(args)
 		cmd.Run(true, true, command, func() error {
 			if srcFileName == "" {
-				return sync.CopyDir(fdst, fsrc)
+				return sync.CopyDir(fdst, fsrc, createEmptySrcDirs)
 			}
 			return operations.CopyFile(fdst, fsrc, srcFileName, srcFileName)
 		})

cmd/copyto/copyto.go

@@ -48,7 +48,7 @@ destination.
 		fsrc, srcFileName, fdst, dstFileName := cmd.NewFsSrcDstFiles(args)
 		cmd.Run(true, true, command, func() error {
 			if srcFileName == "" {
-				return sync.CopyDir(fdst, fsrc)
+				return sync.CopyDir(fdst, fsrc, false)
 			}
 			return operations.CopyFile(fdst, fsrc, dstFileName, srcFileName)
 		})

cmd/help.go

@@ -45,7 +45,7 @@ __rclone_custom_func() {
         else
             __rclone_init_completion -n : || return
         fi
-        if [[ $cur =~ ^[[:alnum:]]*$ ]]; then
+        if [[ $cur =~ ^[[:alnum:]_]*$ ]]; then
             local remote
             while IFS= read -r remote; do
                 [[ $remote != $cur* ]] || COMPREPLY+=("$remote")
@@ -54,7 +54,7 @@ __rclone_custom_func() {
                 local paths=("$cur"*)
                 [[ ! -f ${paths[0]} ]] || COMPREPLY+=("${paths[@]}")
             fi
-        elif [[ $cur =~ ^[[:alnum:]]+: ]]; then
+        elif [[ $cur =~ ^[[:alnum:]_]+: ]]; then
             local path=${cur#*:}
             if [[ $path == */* ]]; then
                 local prefix=${path%/*}

cmd/lsf/lsf.go

@@ -10,7 +10,6 @@ import (
 	"github.com/ncw/rclone/fs"
 	"github.com/ncw/rclone/fs/hash"
 	"github.com/ncw/rclone/fs/operations"
-	"github.com/ncw/rclone/fs/walk"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
@@ -67,8 +66,10 @@ output:
     s - size
     t - modification time
     h - hash
-    i - ID of object if known
+    i - ID of object
+    o - Original ID of underlying object
     m - MimeType of object if known
+    e - encrypted name
 
 So if you wanted the path, size and modification time, you would use
 --format "pst", or maybe --format "tsp" to put the path last.
@@ -161,6 +162,10 @@ func Lsf(fsrc fs.Fs, out io.Writer) error {
 	list.SetCSV(csv)
 	list.SetDirSlash(dirSlash)
 	list.SetAbsolute(absolute)
+	var opt = operations.ListJSONOpt{
+		NoModTime: true,
+		Recurse:   recurse,
+	}
 
 	for _, char := range format {
 		switch char {
@@ -168,38 +173,38 @@ func Lsf(fsrc fs.Fs, out io.Writer) error {
 			list.AddPath()
 		case 't':
 			list.AddModTime()
+			opt.NoModTime = false
 		case 's':
 			list.AddSize()
 		case 'h':
 			list.AddHash(hashType)
+			opt.ShowHash = true
 		case 'i':
 			list.AddID()
 		case 'm':
 			list.AddMimeType()
+		case 'e':
+			list.AddEncrypted()
+			opt.ShowEncrypted = true
+		case 'o':
+			list.AddOrigID()
+			opt.ShowOrigIDs = true
 		default:
 			return errors.Errorf("Unknown format character %q", char)
 		}
 	}
 
-	return walk.Walk(fsrc, "", false, operations.ConfigMaxDepth(recurse), func(path string, entries fs.DirEntries, err error) error {
-		if err != nil {
-			fs.CountError(err)
-			fs.Errorf(path, "error listing: %v", err)
-			return nil
-		}
-		for _, entry := range entries {
-			_, isDir := entry.(fs.Directory)
-			if isDir {
-				if filesOnly {
-					continue
-				}
-			} else {
-				if dirsOnly {
-					continue
-				}
+	return operations.ListJSON(fsrc, "", &opt, func(item *operations.ListJSONItem) error {
+		if item.IsDir {
+			if filesOnly {
+				return nil
+			}
+		} else {
+			if dirsOnly {
+				return nil
 			}
-			_, _ = fmt.Fprintln(out, list.Format(entry))
 		}
+		_, _ = fmt.Fprintln(out, list.Format(item))
 		return nil
 	})
 }

cmd/move/move.go

@@ -10,11 +10,13 @@ import (
 // Globals
 var (
 	deleteEmptySrcDirs = false
+	createEmptySrcDirs = false
 )
 
 func init() {
 	cmd.Root.AddCommand(commandDefintion)
 	commandDefintion.Flags().BoolVarP(&deleteEmptySrcDirs, "delete-empty-src-dirs", "", deleteEmptySrcDirs, "Delete empty source dirs after move")
+	commandDefintion.Flags().BoolVarP(&createEmptySrcDirs, "create-empty-src-dirs", "", createEmptySrcDirs, "Create empty source dirs on destination after move")
 }
 
 var commandDefintion = &cobra.Command{
@@ -52,7 +54,7 @@ can speed transfers up greatly.
 		fsrc, srcFileName, fdst := cmd.NewFsSrcFileDst(args)
 		cmd.Run(true, true, command, func() error {
 			if srcFileName == "" {
-				return sync.MoveDir(fdst, fsrc, deleteEmptySrcDirs)
+				return sync.MoveDir(fdst, fsrc, deleteEmptySrcDirs, createEmptySrcDirs)
 			}
 			return operations.MoveFile(fdst, fsrc, srcFileName, srcFileName)
 		})

cmd/moveto/moveto.go

@@ -52,7 +52,7 @@ transfer.
 
 		cmd.Run(true, true, command, func() error {
 			if srcFileName == "" {
-				return sync.MoveDir(fdst, fsrc, false)
+				return sync.MoveDir(fdst, fsrc, false, false)
 			}
 			return operations.MoveFile(fdst, fsrc, dstFileName, srcFileName)
 		})

cmd/ncdu/ncdu.go

@@ -10,6 +10,7 @@ import (
 	"sort"
 	"strings"
 
+	runewidth "github.com/mattn/go-runewidth"
 	"github.com/ncw/rclone/cmd"
 	"github.com/ncw/rclone/cmd/ncdu/scan"
 	"github.com/ncw/rclone/fs"
@@ -122,7 +123,7 @@ func Printf(x, y int, fg, bg termbox.Attribute, format string, args ...interface
 func Line(x, y, xmax int, fg, bg termbox.Attribute, spacer rune, msg string) {
 	for _, c := range msg {
 		termbox.SetCell(x, y, c, fg, bg)
-		x++
+		x += runewidth.RuneWidth(c)
 		if x >= xmax {
 			return
 		}

cmd/sync/sync.go

@@ -6,8 +6,13 @@ import (
 	"github.com/spf13/cobra"
 )
 
+var (
+	createEmptySrcDirs = false
+)
+
 func init() {
 	cmd.Root.AddCommand(commandDefintion)
+	commandDefintion.Flags().BoolVarP(&createEmptySrcDirs, "create-empty-src-dirs", "", createEmptySrcDirs, "Create empty source dirs on destination after sync")
 }
 
 var commandDefintion = &cobra.Command{
@@ -39,7 +44,7 @@ go there.
 		cmd.CheckArgs(2, 2, command, args)
 		fsrc, fdst := cmd.NewFsSrcDst(args)
 		cmd.Run(true, true, command, func() error {
-			return sync.Sync(fdst, fsrc)
+			return sync.Sync(fdst, fsrc, createEmptySrcDirs)
 		})
 	},
 }

docs/content/about.md

@@ -29,6 +29,7 @@ Rclone is a command line program to sync files and directories to and from:
 * {{< provider name="Hubic" home="https://hubic.com/" config="/hubic/" >}}
 * {{< provider name="Jottacloud" home="https://www.jottacloud.com/en/" config="/jottacloud/" >}}
 * {{< provider name="IBM COS S3" home="http://www.ibm.com/cloud/object-storage" config="/s3/#ibm-cos-s3" >}}
+* {{< provider name="Koofr" home="https://koofr.eu/" config="/koofr/" >}}
 * {{< provider name="Memset Memstore" home="https://www.memset.com/cloud/storage/" config="/swift/" >}}
 * {{< provider name="Mega" home="https://mega.nz/" config="/mega/" >}}
 * {{< provider name="Microsoft Azure Blob Storage" home="https://azure.microsoft.com/en-us/services/storage/blobs/" config="/azureblob/" >}}

docs/content/authors.md

@@ -237,3 +237,11 @@ Contributors
   * Jonathan <vanillajonathan@users.noreply.github.com>
   * James Carpenter <orbsmiv@users.noreply.github.com>
   * Vince <vince0villamora@gmail.com>
+  * Nestar47 <47841759+Nestar47@users.noreply.github.com>
+  * Six <brbsix@gmail.com>
+  * Alexandru Bumbacea <alexandru.bumbacea@booking.com>
+  * calisro <robert.calistri@gmail.com>
+  * Dr.Rx <david.rey@nventive.com>
+  * marcintustin <marcintustin@users.noreply.github.com>
+  * jaKa Močnik <jaka@koofr.net>
+  * Fionera <fionera@fionera.de>

docs/content/docs.md

@@ -1,7 +1,7 @@
 ---
 title: "Documentation"
 description: "Rclone Usage"
-date: "2015-06-06"
+date: "2019-02-25"
 ---
 
 Configure
@@ -34,6 +34,7 @@ See the following for detailed instructions for
   * [HTTP](/http/)
   * [Hubic](/hubic/)
   * [Jottacloud](/jottacloud/)
+  * [Koofr](/koofr/)
   * [Mega](/mega/)
   * [Microsoft Azure Blob Storage](/azureblob/)
   * [Microsoft OneDrive](/onedrive/)
@@ -98,7 +99,7 @@ The main rclone commands with most used first
 * [rclone genautocomplete](/commands/rclone_genautocomplete/)	- Output shell completion scripts for rclone.
 * [rclone gendocs](/commands/rclone_gendocs/)	- Output markdown docs for rclone to the directory supplied.
 * [rclone listremotes](/commands/rclone_listremotes/)	- List all the remotes in the config file.
-* [rclone mount](/commands/rclone_mount/)	- Mount the remote as a mountpoint. **EXPERIMENTAL**
+* [rclone mount](/commands/rclone_mount/)	- Mount the remote as a mountpoint.
 * [rclone moveto](/commands/rclone_moveto/)	- Move file or directory from source to dest.
 * [rclone obscure](/commands/rclone_obscure/)	- Obscure password for use in the rclone.conf
 * [rclone cryptcheck](/commands/rclone_cryptcheck/)	- Check the integrity of a crypted remote.
@@ -170,11 +171,24 @@ should be the name or prefix of a backend (the `type` in the config
 file) and all the configuration for the backend should be provided on
 the command line (or in environment variables).
 
-Eg
+Here are some examples:
 
     rclone lsd --http-url https://pub.rclone.org :http:
 
-Which lists all the directories in `pub.rclone.org`.
+To list all the directories in the root of `https://pub.rclone.org/`.
+
+    rclone lsf --http-url https://example.com :http:path/to/dir
+
+To list files and directories in `https://example.com/path/to/dir/`
+
+    rclone copy --http-url https://example.com :http:path/to/dir /tmp/dir
+
+To copy files and directories in `https://example.com/path/to/dir` to `/tmp/dir`.
+
+    rclone copy --sftp-host example.com :sftp:path/to/dir /tmp/dir
+
+To copy files and directories from `example.com` in the relative
+directory `path/to/dir` to `/tmp/dir` using sftp.
 
 Quoting and the shell
 ---------------------

docs/content/drive.md

@@ -854,6 +854,15 @@ The most likely cause of this is the duplicated file issue above - run
 `rclone dedupe` and check your logs for duplicate object or directory
 messages.
 
+This can also be caused by a delay/caching on google drive's end when
+comparing directory listings. Specifically with team drives used in
+combination with --fast-list. Files that were uploaded recently may
+not appear on the directory list sent to rclone when using --fast-list.
+
+Waiting a moderate period of time between attempts (estimated to be
+approximately 1 hour) and/or not using --fast-list both seem to be
+effective in preventing the problem.
+
 ### Making your own client_id ###
 
 When you use rclone with Google drive in its default configuration you

docs/content/faq.md

@@ -188,3 +188,10 @@ causes not all domains to be resolved properly.
 Additionally with the `GODEBUG=netdns=` environment variable the Go
 resolver decision can be influenced. This also allows to resolve certain
 issues with DNS resolution. See the [name resolution section in the go docs](https://golang.org/pkg/net/#hdr-Name_Resolution).
+
+### The total size reported in the stats for a sync is wrong and keeps changing
+
+It is likely you have more than 10,000 files that need to be
+synced. By default rclone only gets 10,000 files ahead in a sync so as
+not to use up too much memory. You can change this default with the
+[--max-backlog](/docs/#max-backlog-n) flag.

docs/content/googlecloudstorage.md

@@ -217,6 +217,20 @@ the rclone config file, you can set `service_account_credentials` with
 the actual contents of the file instead, or set the equivalent
 environment variable.
 
+### Application Default Credentials ###
+
+If no other source of credentials is provided, rclone will fall back
+to
+[Application Default Credentials](https://cloud.google.com/video-intelligence/docs/common/auth#authenticating_with_application_default_credentials)
+this is useful both when you already have configured authentication
+for your developer account, or in production when running on a google
+compute host. Note that if running in docker, you may need to run
+additional commands on your google compute machine -
+[see this page](https://cloud.google.com/container-registry/docs/advanced-authentication#gcloud_as_a_docker_credential_helper).
+
+Note that in the case application default credentials are used, there
+is no need to explicitly configure a project number.
+
 ### --fast-list ###
 
 This remote supports `--fast-list` which allows you to use fewer
@@ -328,6 +342,27 @@ Access Control List for new buckets.
     - "publicReadWrite"
         - Project team owners get OWNER access, and all Users get WRITER access.
 
+#### --gcs-bucket-policy-only
+
+Access checks should use bucket-level IAM policies.
+
+If you want to upload objects to a bucket with Bucket Policy Only set
+then you will need to set this.
+
+When it is set, rclone:
+
+- ignores ACLs set on buckets
+- ignores ACLs set on objects
+- creates buckets with Bucket Policy Only set
+
+Docs: https://cloud.google.com/storage/docs/bucket-policy-only
+
+
+- Config:      bucket_policy_only
+- Env Var:     RCLONE_GCS_BUCKET_POLICY_ONLY
+- Type:        bool
+- Default:     false
+
 #### --gcs-location
 
 Location for the newly created buckets.

docs/content/koofr.md

@@ -0,0 +1,189 @@
+---
+title: "Koofr"
+description: "Rclone docs for Koofr"
+date: "2019-02-25"
+---
+
+<i class="fa fa-suitcase"></i> Koofr
+-----------------------------------------
+
+Paths are specified as `remote:path`
+
+Paths may be as deep as required, eg `remote:directory/subdirectory`.
+
+The initial setup for Koofr involves creating an application password for
+rclone. You can do that by opening the Koofr
+[web application](https://app.koofr.net/app/admin/preferences/password),
+giving the password a nice name like `rclone` and clicking on generate.
+
+Here is an example of how to make a remote called `koofr`.  First run:
+
+     rclone config
+
+This will guide you through an interactive setup process:
+
+```
+No remotes found - make a new one
+n) New remote
+s) Set configuration password
+q) Quit config
+n/s/q> n
+name> koofr 
+Type of storage to configure.
+Enter a string value. Press Enter for the default ("").
+Choose a number from below, or type in your own value
+ 1 / A stackable unification remote, which can appear to merge the contents of several remotes
+   \ "union"
+ 2 / Alias for a existing remote
+   \ "alias"
+ 3 / Amazon Drive
+   \ "amazon cloud drive"
+ 4 / Amazon S3 Compliant Storage Provider (AWS, Alibaba, Ceph, Digital Ocean, Dreamhost, IBM COS, Minio, etc)
+   \ "s3"
+ 5 / Backblaze B2
+   \ "b2"
+ 6 / Box
+   \ "box"
+ 7 / Cache a remote
+   \ "cache"
+ 8 / Dropbox
+   \ "dropbox"
+ 9 / Encrypt/Decrypt a remote
+   \ "crypt"
+10 / FTP Connection
+   \ "ftp"
+11 / Google Cloud Storage (this is not Google Drive)
+   \ "google cloud storage"
+12 / Google Drive
+   \ "drive"
+13 / Hubic
+   \ "hubic"
+14 / JottaCloud
+   \ "jottacloud"
+15 / Koofr
+   \ "koofr"
+16 / Local Disk
+   \ "local"
+17 / Mega
+   \ "mega"
+18 / Microsoft Azure Blob Storage
+   \ "azureblob"
+19 / Microsoft OneDrive
+   \ "onedrive"
+20 / OpenDrive
+   \ "opendrive"
+21 / Openstack Swift (Rackspace Cloud Files, Memset Memstore, OVH)
+   \ "swift"
+22 / Pcloud
+   \ "pcloud"
+23 / QingCloud Object Storage
+   \ "qingstor"
+24 / SSH/SFTP Connection
+   \ "sftp"
+25 / Webdav
+   \ "webdav"
+26 / Yandex Disk
+   \ "yandex"
+27 / http Connection
+   \ "http"
+Storage> koofr
+** See help for koofr backend at: https://rclone.org/koofr/ **
+
+Your Koofr user name
+Enter a string value. Press Enter for the default ("").
+user> USER@NAME
+Your Koofr password for rclone (generate one at https://app.koofr.net/app/admin/preferences/password)
+y) Yes type in my own password
+g) Generate random password
+y/g> y
+Enter the password:
+password:
+Confirm the password:
+password:
+Edit advanced config? (y/n)
+y) Yes
+n) No
+y/n> n
+Remote config
+--------------------
+[koofr]
+type = koofr
+baseurl = https://app.koofr.net
+user = USER@NAME
+password = *** ENCRYPTED ***
+--------------------
+y) Yes this is OK
+e) Edit this remote
+d) Delete this remote
+y/e/d> y
+```
+
+You can choose to edit advanced config in order to enter your own service URL
+if you use an on-premise or white label Koofr instance, or choose an alternative
+mount instead of your primary storage.
+
+Once configured you can then use `rclone` like this,
+
+List directories in top level of your Koofr
+
+    rclone lsd koofr:
+
+List all the files in your Koofr
+
+    rclone ls koofr:
+
+To copy a local directory to an Koofr directory called backup
+
+    rclone copy /home/source remote:backup
+
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/koofr/koofr.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to koofr (Koofr).
+
+#### --koofr-user
+
+Your Koofr user name
+
+- Config:      user
+- Env Var:     RCLONE_KOOFR_USER
+- Type:        string
+- Default:     ""
+
+#### --koofr-password
+
+Your Koofr password for rclone (generate one at https://app.koofr.net/app/admin/preferences/password)
+
+- Config:      password
+- Env Var:     RCLONE_KOOFR_PASSWORD
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to koofr (Koofr).
+
+#### --koofr-baseurl
+
+Base URL of the Koofr API to connect to
+
+- Config:      baseurl
+- Env Var:     RCLONE_KOOFR_BASEURL
+- Type:        string
+- Default:     "https://app.koofr.net"
+
+#### --koofr-mountid
+
+Mount ID of the mount to use. If omitted, the primary mount is used.
+
+- Config:      mountid
+- Env Var:     RCLONE_KOOFR_MOUNTID
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
+
+### Limitations ###
+
+Note that Koofr is case insensitive so you can't have a file called
+"Hello.doc" and one called "hello.doc".

docs/content/overview.md

@@ -2,7 +2,7 @@
 title: "Overview of cloud storage systems"
 description: "Overview of cloud storage systems"
 type: page
-date: "2015-09-06"
+date: "2019-02-25"
 ---
 
 # Overview of cloud storage systems #
@@ -28,6 +28,7 @@ Here is an overview of the major features of each cloud storage system.
 | HTTP                         | -           | No      | No               | No              | R         |
 | Hubic                        | MD5         | Yes     | No               | No              | R/W       |
 | Jottacloud                   | MD5         | Yes     | Yes              | No              | R/W       |
+| Koofr                        | MD5         | No      | Yes              | No              | -         |
 | Mega                         | -           | No      | No               | Yes             | -         |
 | Microsoft Azure Blob Storage | MD5         | Yes     | No               | No              | R/W       |
 | Microsoft OneDrive           | SHA1 ‡‡     | Yes     | Yes              | No              | R         |

docs/content/s3.md

@@ -1112,6 +1112,11 @@ server_side_encryption =
 storage_class =
 ```
 
+If you are using an older version of CEPH, eg 10.2.x Jewel, then you
+may need to supply the parameter `--s3-upload-cutoff 0` or put this in
+the config file as `upload_cutoff 0` to work around a bug which causes
+uploading of small files to fail.
+
 Note also that Ceph sometimes puts `/` in the passwords it gives
 users.  If you read the secret access key using the command line tools
 you will get a JSON blob with the `/` escaped as `\/`.  Make sure you

docs/layouts/chrome/navbar.html

@@ -67,6 +67,7 @@
                     <li><a href="/http/"><i class="fa fa-globe"></i> HTTP</a></li>
                     <li><a href="/hubic/"><i class="fa fa-space-shuttle"></i> Hubic</a></li>
                     <li><a href="/jottacloud/"><i class="fa fa-cloud"></i> Jottacloud</a></li>
+                    <li><a href="/koofr/"><i class="fa fa-suitcase"></i> Koofr</a></li>
                     <li><a href="/mega/"><i class="fa fa-archive"></i> Mega</a></li>
                     <li><a href="/azureblob/"><i class="fa fa-windows"></i> Microsoft Azure Blob Storage</a></li>
                     <li><a href="/onedrive/"><i class="fa fa-windows"></i> Microsoft OneDrive</a></li>

fs/filter/filterflags/filterflags.go

@@ -13,9 +13,15 @@ var (
 	Opt = filter.DefaultOpt
 )
 
+// Reload the filters from the flags
+func Reload() (err error) {
+	filter.Active, err = filter.NewFilter(&Opt)
+	return err
+}
+
 // AddFlags adds the non filing system specific flags to the command
 func AddFlags(flagSet *pflag.FlagSet) {
-	rc.AddOption("filter", &Opt)
+	rc.AddOptionReload("filter", &Opt, Reload)
 	flags.BoolVarP(flagSet, &Opt.DeleteExcluded, "delete-excluded", "", false, "Delete files on dest excluded from sync")
 	flags.StringArrayVarP(flagSet, &Opt.FilterRule, "filter", "f", nil, "Add a file-filtering rule")
 	flags.StringArrayVarP(flagSet, &Opt.FilterFrom, "filter-from", "", nil, "Read filtering patterns from a file")

fs/fs.go

@@ -16,8 +16,10 @@ import (
 
 	"github.com/ncw/rclone/fs/config/configmap"
 	"github.com/ncw/rclone/fs/config/configstruct"
+	"github.com/ncw/rclone/fs/fserrors"
 	"github.com/ncw/rclone/fs/fspath"
 	"github.com/ncw/rclone/fs/hash"
+	"github.com/ncw/rclone/lib/pacer"
 	"github.com/pkg/errors"
 )
 
@@ -59,7 +61,7 @@ var (
 	ErrorNotAFile                    = errors.New("is a not a regular file")
 	ErrorNotDeleting                 = errors.New("not deleting files as there were IO errors")
 	ErrorNotDeletingDirs             = errors.New("not deleting directories as there were IO errors")
-	ErrorCantMoveOverlapping         = errors.New("can't move files on overlapping remotes")
+	ErrorOverlapping                 = errors.New("can't sync or move files on overlapping remotes")
 	ErrorDirectoryNotEmpty           = errors.New("directory not empty")
 	ErrorImmutableModified           = errors.New("immutable file modified")
 	ErrorPermissionDenied            = errors.New("permission denied")
@@ -407,6 +409,7 @@ type Features struct {
 	BucketBased             bool // is bucket based (like s3, swift etc)
 	SetTier                 bool // allows set tier functionality on objects
 	GetTier                 bool // allows to retrieve storage tier of objects
+	ServerSideAcrossConfigs bool // can server side copy between different remotes of the same type
 
 	// Purge all files in the root and the root directory
 	//
@@ -1112,3 +1115,81 @@ func GetModifyWindow(fss ...Info) time.Duration {
 	}
 	return window
 }
+
+// Pacer is a simple wrapper around a pacer.Pacer with logging.
+type Pacer struct {
+	*pacer.Pacer
+}
+
+type logCalculator struct {
+	pacer.Calculator
+}
+
+// NewPacer creates a Pacer for the given Fs and Calculator.
+func NewPacer(c pacer.Calculator) *Pacer {
+	p := &Pacer{
+		Pacer: pacer.New(
+			pacer.InvokerOption(pacerInvoker),
+			pacer.MaxConnectionsOption(Config.Checkers+Config.Transfers),
+			pacer.RetriesOption(Config.LowLevelRetries),
+			pacer.CalculatorOption(c),
+		),
+	}
+	p.SetCalculator(c)
+	return p
+}
+
+func (d *logCalculator) Calculate(state pacer.State) time.Duration {
+	oldSleepTime := state.SleepTime
+	newSleepTime := d.Calculator.Calculate(state)
+	if state.ConsecutiveRetries > 0 {
+		if newSleepTime != oldSleepTime {
+			Debugf("pacer", "Rate limited, increasing sleep to %v", newSleepTime)
+		}
+	} else {
+		if newSleepTime != oldSleepTime {
+			Debugf("pacer", "Reducing sleep to %v", newSleepTime)
+		}
+	}
+	return newSleepTime
+}
+
+// SetCalculator sets the pacing algorithm. Don't modify the Calculator object
+// afterwards, use the ModifyCalculator method when needed.
+//
+// It will choose the default algorithm if nil is passed in.
+func (p *Pacer) SetCalculator(c pacer.Calculator) {
+	switch c.(type) {
+	case *logCalculator:
+		Logf("pacer", "Invalid Calculator in fs.Pacer.SetCalculator")
+	case nil:
+		c = &logCalculator{pacer.NewDefault()}
+	default:
+		c = &logCalculator{c}
+	}
+
+	p.Pacer.SetCalculator(c)
+}
+
+// ModifyCalculator calls the given function with the currently configured
+// Calculator and the Pacer lock held.
+func (p *Pacer) ModifyCalculator(f func(pacer.Calculator)) {
+	p.ModifyCalculator(func(c pacer.Calculator) {
+		switch _c := c.(type) {
+		case *logCalculator:
+			f(_c.Calculator)
+		default:
+			Logf("pacer", "Invalid Calculator in fs.Pacer: %t", c)
+			f(c)
+		}
+	})
+}
+
+func pacerInvoker(try, retries int, f pacer.Paced) (retry bool, err error) {
+	retry, err = f()
+	if retry {
+		Debugf("pacer", "low level retry %d/%d (error %v)", try, retries, err)
+		err = fserrors.RetryError(err)
+	}
+	return
+}

fs/fs_test.go

@@ -2,8 +2,15 @@ package fs
 
 import (
 	"strings"
+	"sync"
 	"testing"
+	"time"
 
+	"github.com/stretchr/testify/require"
+
+	"github.com/ncw/rclone/fs/fserrors"
+	"github.com/ncw/rclone/lib/pacer"
+	"github.com/pkg/errors"
 	"github.com/spf13/pflag"
 	"github.com/stretchr/testify/assert"
 )
@@ -70,3 +77,47 @@ func TestOption(t *testing.T) {
 	err = d.Set("sdfsdf")
 	assert.Error(t, err)
 }
+
+var errFoo = errors.New("foo")
+
+type dummyPaced struct {
+	retry  bool
+	called int
+	wait   *sync.Cond
+}
+
+func (dp *dummyPaced) fn() (bool, error) {
+	if dp.wait != nil {
+		dp.wait.L.Lock()
+		dp.wait.Wait()
+		dp.wait.L.Unlock()
+	}
+	dp.called++
+	return dp.retry, errFoo
+}
+
+func TestPacerCall(t *testing.T) {
+	expectedCalled := Config.LowLevelRetries
+	if expectedCalled == 0 {
+		expectedCalled = 20
+		Config.LowLevelRetries = expectedCalled
+		defer func() {
+			Config.LowLevelRetries = 0
+		}()
+	}
+	p := NewPacer(pacer.NewDefault(pacer.MinSleep(1*time.Millisecond), pacer.MaxSleep(2*time.Millisecond)))
+
+	dp := &dummyPaced{retry: true}
+	err := p.Call(dp.fn)
+	require.Equal(t, expectedCalled, dp.called)
+	require.Implements(t, (*fserrors.Retrier)(nil), err)
+}
+
+func TestPacerCallNoRetry(t *testing.T) {
+	p := NewPacer(pacer.NewDefault(pacer.MinSleep(1*time.Millisecond), pacer.MaxSleep(2*time.Millisecond)))
+
+	dp := &dummyPaced{retry: true}
+	err := p.CallNoRetry(dp.fn)
+	require.Equal(t, 1, dp.called)
+	require.Implements(t, (*fserrors.Retrier)(nil), err)
+}

fs/fserrors/error.go

@@ -194,7 +194,7 @@ func Cause(cause error) (retriable bool, err error) {
 			// this case.
 			err = prev
 		}
-		if err == prev {
+		if reflect.DeepEqual(err, prev) {
 			// Unpack any struct or *struct with a field
 			// of name Err which satisfies the error
 			// interface.  This includes *url.Error,
@@ -215,7 +215,7 @@ func Cause(cause error) (retriable bool, err error) {
 				}
 			}
 		}
-		if err == prev {
+		if reflect.DeepEqual(err, prev) {
 			break
 		}
 	}

fs/operations/operations.go

@@ -10,6 +10,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"path"
+	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
@@ -272,7 +273,7 @@ func Copy(f fs.Fs, dst fs.Object, remote string, src fs.Object) (newDst fs.Objec
 		// Try server side copy first - if has optional interface and
 		// is same underlying remote
 		actionTaken = "Copied (server side copy)"
-		if doCopy := f.Features().Copy; doCopy != nil && SameConfig(src.Fs(), f) {
+		if doCopy := f.Features().Copy; doCopy != nil && (SameConfig(src.Fs(), f) || (SameRemoteType(src.Fs(), f) && f.Features().ServerSideAcrossConfigs)) {
 			newDst, err = doCopy(src, remote)
 			if err == nil {
 				dst = newDst
@@ -391,7 +392,7 @@ func Move(fdst fs.Fs, dst fs.Object, remote string, src fs.Object) (newDst fs.Ob
 		return newDst, nil
 	}
 	// See if we have Move available
-	if doMove := fdst.Features().Move; doMove != nil && SameConfig(src.Fs(), fdst) {
+	if doMove := fdst.Features().Move; doMove != nil && (SameConfig(src.Fs(), fdst) || (SameRemoteType(src.Fs(), fdst) && fdst.Features().ServerSideAcrossConfigs)) {
 		// Delete destination if it exists
 		if dst != nil {
 			err = DeleteFile(dst)
@@ -524,6 +525,11 @@ func DeleteFiles(toBeDeleted fs.ObjectsChan) error {
 	return DeleteFilesWithBackupDir(toBeDeleted, nil)
 }
 
+// SameRemoteType returns true if fdst and fsrc are the same type
+func SameRemoteType(fdst, fsrc fs.Info) bool {
+	return fmt.Sprintf("%T", fdst) == fmt.Sprintf("%T", fsrc)
+}
+
 // SameConfig returns true if fdst and fsrc are using the same config
 // file entry
 func SameConfig(fdst, fsrc fs.Info) bool {
@@ -532,7 +538,7 @@ func SameConfig(fdst, fsrc fs.Info) bool {
 
 // Same returns true if fdst and fsrc point to the same underlying Fs
 func Same(fdst, fsrc fs.Info) bool {
-	return SameConfig(fdst, fsrc) && fdst.Root() == fsrc.Root()
+	return SameConfig(fdst, fsrc) && strings.Trim(fdst.Root(), "/") == strings.Trim(fsrc.Root(), "/")
 }
 
 // Overlapping returns true if fdst and fsrc point to the same
@@ -543,7 +549,7 @@ func Overlapping(fdst, fsrc fs.Info) bool {
 	}
 	// Return the Root with a trailing / if not empty
 	fixedRoot := func(f fs.Info) string {
-		s := strings.Trim(f.Root(), "/")
+		s := strings.Trim(filepath.ToSlash(f.Root()), "/")
 		if s != "" {
 			s += "/"
 		}
@@ -1479,8 +1485,7 @@ type ListFormat struct {
 	separator string
 	dirSlash  bool
 	absolute  bool
-	output    []func() string
-	entry     fs.DirEntry
+	output    []func(entry *ListJSONItem) string
 	csv       *csv.Writer
 	buf       bytes.Buffer
 }
@@ -1516,76 +1521,91 @@ func (l *ListFormat) SetCSV(useCSV bool) {
 }
 
 // SetOutput sets functions used to create files information
-func (l *ListFormat) SetOutput(output []func() string) {
+func (l *ListFormat) SetOutput(output []func(entry *ListJSONItem) string) {
 	l.output = output
 }
 
 // AddModTime adds file's Mod Time to output
 func (l *ListFormat) AddModTime() {
-	l.AppendOutput(func() string { return l.entry.ModTime().Local().Format("2006-01-02 15:04:05") })
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.ModTime.When.Local().Format("2006-01-02 15:04:05")
+	})
 }
 
 // AddSize adds file's size to output
 func (l *ListFormat) AddSize() {
-	l.AppendOutput(func() string {
-		return strconv.FormatInt(l.entry.Size(), 10)
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return strconv.FormatInt(entry.Size, 10)
 	})
 }
 
+// normalisePath makes sure the path has the correct slashes for the current mode
+func (l *ListFormat) normalisePath(entry *ListJSONItem, remote string) string {
+	if l.absolute && !strings.HasPrefix(remote, "/") {
+		remote = "/" + remote
+	}
+	if entry.IsDir && l.dirSlash {
+		remote += "/"
+	}
+	return remote
+}
+
 // AddPath adds path to file to output
 func (l *ListFormat) AddPath() {
-	l.AppendOutput(func() string {
-		remote := l.entry.Remote()
-		if l.absolute && !strings.HasPrefix(remote, "/") {
-			remote = "/" + remote
-		}
-		_, isDir := l.entry.(fs.Directory)
-		if isDir && l.dirSlash {
-			remote += "/"
-		}
-		return remote
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return l.normalisePath(entry, entry.Path)
+	})
+}
+
+// AddEncrypted adds the encrypted path to file to output
+func (l *ListFormat) AddEncrypted() {
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return l.normalisePath(entry, entry.Encrypted)
 	})
 }
 
 // AddHash adds the hash of the type given to the output
 func (l *ListFormat) AddHash(ht hash.Type) {
-	l.AppendOutput(func() string {
-		o, ok := l.entry.(fs.Object)
-		if !ok {
+	hashName := ht.String()
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		if entry.IsDir {
 			return ""
 		}
-		return hashSum(ht, o)
+		return entry.Hashes[hashName]
 	})
 }
 
 // AddID adds file's ID to the output if known
 func (l *ListFormat) AddID() {
-	l.AppendOutput(func() string {
-		if do, ok := l.entry.(fs.IDer); ok {
-			return do.ID()
-		}
-		return ""
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.ID
+	})
+}
+
+// AddOrigID adds file's Original ID to the output if known
+func (l *ListFormat) AddOrigID() {
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.OrigID
 	})
 }
 
 // AddMimeType adds file's MimeType to the output if known
 func (l *ListFormat) AddMimeType() {
-	l.AppendOutput(func() string {
-		return fs.MimeTypeDirEntry(l.entry)
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.MimeType
 	})
 }
 
 // AppendOutput adds string generated by specific function to printed output
-func (l *ListFormat) AppendOutput(functionToAppend func() string) {
+func (l *ListFormat) AppendOutput(functionToAppend func(item *ListJSONItem) string) {
 	l.output = append(l.output, functionToAppend)
 }
 
 // Format prints information about the DirEntry in the format defined
-func (l *ListFormat) Format(entry fs.DirEntry) (result string) {
-	l.entry = entry
+func (l *ListFormat) Format(entry *ListJSONItem) (result string) {
 	var out []string
 	for _, fun := range l.output {
-		out = append(out, fun())
+		out = append(out, fun(entry))
 	}
 	if l.csv != nil {
 		l.buf.Reset()

fs/operations/operations_test.go

@@ -39,7 +39,6 @@ import (
 	"github.com/ncw/rclone/fs/accounting"
 	"github.com/ncw/rclone/fs/filter"
 	"github.com/ncw/rclone/fs/hash"
-	"github.com/ncw/rclone/fs/list"
 	"github.com/ncw/rclone/fs/operations"
 	"github.com/ncw/rclone/fstest"
 	"github.com/stretchr/testify/assert"
@@ -778,6 +777,7 @@ func TestSame(t *testing.T) {
 
 func TestOverlapping(t *testing.T) {
 	a := &testFsInfo{name: "name", root: "root"}
+	slash := string(os.PathSeparator) // native path separator
 	for _, test := range []struct {
 		name     string
 		root     string
@@ -790,6 +790,8 @@ func TestOverlapping(t *testing.T) {
 		{"name", "roo", false},
 		{"name", "root/toot", true},
 		{"name", "root/toot/", true},
+		{"name", "root" + slash + "toot", true},
+		{"name", "root" + slash + "toot" + slash, true},
 		{"name", "", true},
 		{"name", "/", true},
 	} {
@@ -873,61 +875,90 @@ func TestCheckEqualReaders(t *testing.T) {
 }
 
 func TestListFormat(t *testing.T) {
-	r := fstest.NewRun(t)
-	defer r.Finalise()
-	file1 := r.WriteObject("a", "a", t1)
-	file2 := r.WriteObject("subdir/b", "b", t1)
+	item0 := &operations.ListJSONItem{
+		Path:      "a",
+		Name:      "a",
+		Encrypted: "encryptedFileName",
+		Size:      1,
+		MimeType:  "application/octet-stream",
+		ModTime: operations.Timestamp{
+			When:   t1,
+			Format: "2006-01-02T15:04:05.000000000Z07:00"},
+		IsDir: false,
+		Hashes: map[string]string{
+			"MD5":          "0cc175b9c0f1b6a831c399e269772661",
+			"SHA-1":        "86f7e437faa5a7fce15d1ddcb9eaeaea377667b8",
+			"DropboxHash":  "bf5d3affb73efd2ec6c36ad3112dd933efed63c4e1cbffcfa88e2759c144f2d8",
+			"QuickXorHash": "6100000000000000000000000100000000000000"},
+		ID:     "fileID",
+		OrigID: "fileOrigID",
+	}
 
-	fstest.CheckItems(t, r.Fremote, file1, file2)
+	item1 := &operations.ListJSONItem{
+		Path:      "subdir",
+		Name:      "subdir",
+		Encrypted: "encryptedDirName",
+		Size:      -1,
+		MimeType:  "inode/directory",
+		ModTime: operations.Timestamp{
+			When:   t2,
+			Format: "2006-01-02T15:04:05.000000000Z07:00"},
+		IsDir:  true,
+		Hashes: map[string]string(nil),
+		ID:     "dirID",
+		OrigID: "dirOrigID",
+	}
 
-	items, _ := list.DirSorted(r.Fremote, true, "")
 	var list operations.ListFormat
 	list.AddPath()
 	list.SetDirSlash(false)
-	assert.Equal(t, "subdir", list.Format(items[1]))
+	assert.Equal(t, "subdir", list.Format(item1))
 
 	list.SetDirSlash(true)
-	assert.Equal(t, "subdir/", list.Format(items[1]))
+	assert.Equal(t, "subdir/", list.Format(item1))
 
 	list.SetOutput(nil)
-	assert.Equal(t, "", list.Format(items[1]))
+	assert.Equal(t, "", list.Format(item1))
 
-	list.AppendOutput(func() string { return "a" })
-	list.AppendOutput(func() string { return "b" })
-	assert.Equal(t, "ab", list.Format(items[1]))
+	list.AppendOutput(func(item *operations.ListJSONItem) string { return "a" })
+	list.AppendOutput(func(item *operations.ListJSONItem) string { return "b" })
+	assert.Equal(t, "ab", list.Format(item1))
 	list.SetSeparator(":::")
-	assert.Equal(t, "a:::b", list.Format(items[1]))
+	assert.Equal(t, "a:::b", list.Format(item1))
 
 	list.SetOutput(nil)
 	list.AddModTime()
-	assert.Equal(t, items[0].ModTime().Local().Format("2006-01-02 15:04:05"), list.Format(items[0]))
+	assert.Equal(t, t1.Local().Format("2006-01-02 15:04:05"), list.Format(item0))
 
 	list.SetOutput(nil)
+	list.SetSeparator("|")
 	list.AddID()
-	_ = list.Format(items[0]) // Can't really check anything - at least it didn't panic!
+	list.AddOrigID()
+	assert.Equal(t, "fileID|fileOrigID", list.Format(item0))
+	assert.Equal(t, "dirID|dirOrigID", list.Format(item1))
 
 	list.SetOutput(nil)
 	list.AddMimeType()
-	assert.Contains(t, list.Format(items[0]), "/")
-	assert.Equal(t, "inode/directory", list.Format(items[1]))
+	assert.Contains(t, list.Format(item0), "/")
+	assert.Equal(t, "inode/directory", list.Format(item1))
 
 	list.SetOutput(nil)
 	list.AddPath()
 	list.SetAbsolute(true)
-	assert.Equal(t, "/a", list.Format(items[0]))
+	assert.Equal(t, "/a", list.Format(item0))
 	list.SetAbsolute(false)
-	assert.Equal(t, "a", list.Format(items[0]))
+	assert.Equal(t, "a", list.Format(item0))
 
 	list.SetOutput(nil)
 	list.AddSize()
-	assert.Equal(t, "1", list.Format(items[0]))
+	assert.Equal(t, "1", list.Format(item0))
 
 	list.AddPath()
 	list.AddModTime()
 	list.SetDirSlash(true)
 	list.SetSeparator("__SEP__")
-	assert.Equal(t, "1__SEP__a__SEP__"+items[0].ModTime().Local().Format("2006-01-02 15:04:05"), list.Format(items[0]))
-	assert.Equal(t, fmt.Sprintf("%d", items[1].Size())+"__SEP__subdir/__SEP__"+items[1].ModTime().Local().Format("2006-01-02 15:04:05"), list.Format(items[1]))
+	assert.Equal(t, "1__SEP__a__SEP__"+t1.Local().Format("2006-01-02 15:04:05"), list.Format(item0))
+	assert.Equal(t, "-1__SEP__subdir/__SEP__"+t2.Local().Format("2006-01-02 15:04:05"), list.Format(item1))
 
 	for _, test := range []struct {
 		ht   hash.Type
@@ -939,10 +970,7 @@ func TestListFormat(t *testing.T) {
 	} {
 		list.SetOutput(nil)
 		list.AddHash(test.ht)
-		got := list.Format(items[0])
-		if got != "UNSUPPORTED" && got != "" {
-			assert.Equal(t, test.want, got)
-		}
+		assert.Equal(t, test.want, list.Format(item0))
 	}
 
 	list.SetOutput(nil)
@@ -952,8 +980,15 @@ func TestListFormat(t *testing.T) {
 	list.AddPath()
 	list.AddModTime()
 	list.SetDirSlash(true)
-	assert.Equal(t, "1|a|"+items[0].ModTime().Local().Format("2006-01-02 15:04:05"), list.Format(items[0]))
-	assert.Equal(t, fmt.Sprintf("%d", items[1].Size())+"|subdir/|"+items[1].ModTime().Local().Format("2006-01-02 15:04:05"), list.Format(items[1]))
+	assert.Equal(t, "1|a|"+t1.Local().Format("2006-01-02 15:04:05"), list.Format(item0))
+	assert.Equal(t, "-1|subdir/|"+t2.Local().Format("2006-01-02 15:04:05"), list.Format(item1))
+
+	list.SetOutput(nil)
+	list.SetSeparator("|")
+	list.AddPath()
+	list.AddEncrypted()
+	assert.Equal(t, "a|encryptedFileName", list.Format(item0))
+	assert.Equal(t, "subdir/|encryptedDirName/", list.Format(item1))
 
 }
 

fs/rc/config.go

@@ -8,13 +8,23 @@ import (
 	"github.com/pkg/errors"
 )
 
-var optionBlock = map[string]interface{}{}
+var (
+	optionBlock  = map[string]interface{}{}
+	optionReload = map[string]func() error{}
+)
 
 // AddOption adds an option set
 func AddOption(name string, option interface{}) {
 	optionBlock[name] = option
 }
 
+// AddOptionReload adds an option set with a reload function to be
+// called when options are changed
+func AddOptionReload(name string, option interface{}, reload func() error) {
+	optionBlock[name] = option
+	optionReload[name] = reload
+}
+
 func init() {
 	Add(Call{
 		Path:  "options/blocks",
@@ -103,7 +113,12 @@ func rcOptionsSet(in Params) (out Params, err error) {
 		if err != nil {
 			return nil, errors.Wrapf(err, "failed to write options from block %q", name)
 		}
-
+		if reload := optionReload[name]; reload != nil {
+			err = reload()
+			if err != nil {
+				return nil, errors.Wrapf(err, "failed to reload options from block %q", name)
+			}
+		}
 	}
 	return out, nil
 }

fs/rc/config_test.go

@@ -1,8 +1,10 @@
 package rc
 
 import (
+	"fmt"
 	"testing"
 
+	"github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -24,9 +26,21 @@ func TestAddOption(t *testing.T) {
 	assert.Equal(t, len(optionBlock), 0)
 	AddOption("potato", &testOptions)
 	assert.Equal(t, len(optionBlock), 1)
+	assert.Equal(t, len(optionReload), 0)
 	assert.Equal(t, &testOptions, optionBlock["potato"])
 }
 
+func TestAddOptionReload(t *testing.T) {
+	defer clearOptionBlock()
+	assert.Equal(t, len(optionBlock), 0)
+	reload := func() error { return nil }
+	AddOptionReload("potato", &testOptions, reload)
+	assert.Equal(t, len(optionBlock), 1)
+	assert.Equal(t, len(optionReload), 1)
+	assert.Equal(t, &testOptions, optionBlock["potato"])
+	assert.Equal(t, fmt.Sprintf("%p", reload), fmt.Sprintf("%p", optionReload["potato"]))
+}
+
 func TestOptionsBlocks(t *testing.T) {
 	defer clearOptionBlock()
 	AddOption("potato", &testOptions)
@@ -53,7 +67,14 @@ func TestOptionsGet(t *testing.T) {
 
 func TestOptionsSet(t *testing.T) {
 	defer clearOptionBlock()
-	AddOption("potato", &testOptions)
+	var reloaded int
+	AddOptionReload("potato", &testOptions, func() error {
+		if reloaded > 0 {
+			return errors.New("error while reloading")
+		}
+		reloaded++
+		return nil
+	})
 	call := Calls.Get("options/set")
 	require.NotNil(t, call)
 
@@ -67,6 +88,12 @@ func TestOptionsSet(t *testing.T) {
 	require.Nil(t, out)
 	assert.Equal(t, 50, testOptions.Int)
 	assert.Equal(t, "hello", testOptions.String)
+	assert.Equal(t, 1, reloaded)
+
+	// error from reload
+	_, err = call.Fn(in)
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "error while reloading")
 
 	// unknown option block
 	in = Params{
@@ -85,4 +112,5 @@ func TestOptionsSet(t *testing.T) {
 	_, err = call.Fn(in)
 	require.Error(t, err)
 	assert.Contains(t, err.Error(), "failed to write options")
+
 }

fs/sync/rc.go

@@ -39,17 +39,21 @@ func rcSyncCopyMove(in rc.Params, name string) (out rc.Params, err error) {
 	if err != nil {
 		return nil, err
 	}
+	createEmptySrcDirs, err := in.GetBool("createEmptySrcDirs")
+	if rc.NotErrParamNotFound(err) {
+		return nil, err
+	}
 	switch name {
 	case "sync":
-		return nil, Sync(dstFs, srcFs)
+		return nil, Sync(dstFs, srcFs, createEmptySrcDirs)
 	case "copy":
-		return nil, CopyDir(dstFs, srcFs)
+		return nil, CopyDir(dstFs, srcFs, createEmptySrcDirs)
 	case "move":
 		deleteEmptySrcDirs, err := in.GetBool("deleteEmptySrcDirs")
 		if rc.NotErrParamNotFound(err) {
 			return nil, err
 		}
-		return nil, MoveDir(dstFs, srcFs, deleteEmptySrcDirs)
+		return nil, MoveDir(dstFs, srcFs, deleteEmptySrcDirs, createEmptySrcDirs)
 	}
 	panic("unknown rcSyncCopyMove type")
 }

fs/sync/sync.go

@@ -24,6 +24,7 @@ type syncCopyMove struct {
 	fsrc               fs.Fs
 	deleteMode         fs.DeleteMode // how we are doing deletions
 	DoMove             bool
+	copyEmptySrcDirs   bool
 	deleteEmptySrcDirs bool
 	dir                string
 	// internal state
@@ -63,12 +64,16 @@ type syncCopyMove struct {
 	suffix         string                 // suffix to add to files placed in backupDir
 }
 
-func newSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, deleteEmptySrcDirs bool) (*syncCopyMove, error) {
+func newSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, deleteEmptySrcDirs bool, copyEmptySrcDirs bool) (*syncCopyMove, error) {
+	if (deleteMode != fs.DeleteModeOff || DoMove) && operations.Overlapping(fdst, fsrc) {
+		return nil, fserrors.FatalError(fs.ErrorOverlapping)
+	}
 	s := &syncCopyMove{
 		fdst:               fdst,
 		fsrc:               fsrc,
 		deleteMode:         deleteMode,
 		DoMove:             DoMove,
+		copyEmptySrcDirs:   copyEmptySrcDirs,
 		deleteEmptySrcDirs: deleteEmptySrcDirs,
 		dir:                "",
 		srcFilesChan:       make(chan fs.Object, fs.Config.Checkers+fs.Config.Transfers),
@@ -686,7 +691,9 @@ func (s *syncCopyMove) run() error {
 	s.stopTransfers()
 	s.stopDeleters()
 
-	s.processError(copyEmptyDirectories(s.fdst, s.srcEmptyDirs))
+	if s.copyEmptySrcDirs {
+		s.processError(copyEmptyDirectories(s.fdst, s.srcEmptyDirs))
+	}
 
 	// Delete files after
 	if s.deleteMode == fs.DeleteModeAfter {
@@ -849,7 +856,7 @@ func (s *syncCopyMove) Match(dst, src fs.DirEntry) (recurse bool) {
 // If DoMove is true then files will be moved instead of copied
 //
 // dir is the start directory, "" for root
-func runSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, deleteEmptySrcDirs bool) error {
+func runSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, deleteEmptySrcDirs bool, copyEmptySrcDirs bool) error {
 	if deleteMode != fs.DeleteModeOff && DoMove {
 		return fserrors.FatalError(errors.New("can't delete and move at the same time"))
 	}
@@ -859,7 +866,7 @@ func runSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, de
 			return fserrors.FatalError(errors.New("can't use --delete-before with --track-renames"))
 		}
 		// only delete stuff during in this pass
-		do, err := newSyncCopyMove(fdst, fsrc, fs.DeleteModeOnly, false, deleteEmptySrcDirs)
+		do, err := newSyncCopyMove(fdst, fsrc, fs.DeleteModeOnly, false, deleteEmptySrcDirs, copyEmptySrcDirs)
 		if err != nil {
 			return err
 		}
@@ -870,7 +877,7 @@ func runSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, de
 		// Next pass does a copy only
 		deleteMode = fs.DeleteModeOff
 	}
-	do, err := newSyncCopyMove(fdst, fsrc, deleteMode, DoMove, deleteEmptySrcDirs)
+	do, err := newSyncCopyMove(fdst, fsrc, deleteMode, DoMove, deleteEmptySrcDirs, copyEmptySrcDirs)
 	if err != nil {
 		return err
 	}
@@ -878,22 +885,22 @@ func runSyncCopyMove(fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, de
 }
 
 // Sync fsrc into fdst
-func Sync(fdst, fsrc fs.Fs) error {
-	return runSyncCopyMove(fdst, fsrc, fs.Config.DeleteMode, false, false)
+func Sync(fdst, fsrc fs.Fs, copyEmptySrcDirs bool) error {
+	return runSyncCopyMove(fdst, fsrc, fs.Config.DeleteMode, false, false, copyEmptySrcDirs)
 }
 
 // CopyDir copies fsrc into fdst
-func CopyDir(fdst, fsrc fs.Fs) error {
-	return runSyncCopyMove(fdst, fsrc, fs.DeleteModeOff, false, false)
+func CopyDir(fdst, fsrc fs.Fs, copyEmptySrcDirs bool) error {
+	return runSyncCopyMove(fdst, fsrc, fs.DeleteModeOff, false, false, copyEmptySrcDirs)
 }
 
 // moveDir moves fsrc into fdst
-func moveDir(fdst, fsrc fs.Fs, deleteEmptySrcDirs bool) error {
-	return runSyncCopyMove(fdst, fsrc, fs.DeleteModeOff, true, deleteEmptySrcDirs)
+func moveDir(fdst, fsrc fs.Fs, deleteEmptySrcDirs bool, copyEmptySrcDirs bool) error {
+	return runSyncCopyMove(fdst, fsrc, fs.DeleteModeOff, true, deleteEmptySrcDirs, copyEmptySrcDirs)
 }
 
 // MoveDir moves fsrc into fdst
-func MoveDir(fdst, fsrc fs.Fs, deleteEmptySrcDirs bool) error {
+func MoveDir(fdst, fsrc fs.Fs, deleteEmptySrcDirs bool, copyEmptySrcDirs bool) error {
 	if operations.Same(fdst, fsrc) {
 		fs.Errorf(fdst, "Nothing to do as source and destination are the same")
 		return nil
@@ -920,13 +927,6 @@ func MoveDir(fdst, fsrc fs.Fs, deleteEmptySrcDirs bool) error {
 		}
 	}
 
-	// The two remotes mustn't overlap if we didn't do server side move
-	if operations.Overlapping(fdst, fsrc) {
-		err := fs.ErrorCantMoveOverlapping
-		fs.Errorf(fdst, "%v", err)
-		return err
-	}
-
 	// Otherwise move the files one by one
-	return moveDir(fdst, fsrc, deleteEmptySrcDirs)
+	return moveDir(fdst, fsrc, deleteEmptySrcDirs, copyEmptySrcDirs)
 }

fs/sync/sync_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/ncw/rclone/fs"
 	"github.com/ncw/rclone/fs/accounting"
 	"github.com/ncw/rclone/fs/filter"
+	"github.com/ncw/rclone/fs/fserrors"
 	"github.com/ncw/rclone/fs/hash"
 	"github.com/ncw/rclone/fs/operations"
 	"github.com/ncw/rclone/fstest"
@@ -39,7 +40,7 @@ func TestCopyWithDryRun(t *testing.T) {
 	r.Mkdir(r.Fremote)
 
 	fs.Config.DryRun = true
-	err := CopyDir(r.Fremote, r.Flocal)
+	err := CopyDir(r.Fremote, r.Flocal, false)
 	fs.Config.DryRun = false
 	require.NoError(t, err)
 
@@ -54,7 +55,7 @@ func TestCopy(t *testing.T) {
 	file1 := r.WriteFile("sub dir/hello world", "hello world", t1)
 	r.Mkdir(r.Fremote)
 
-	err := CopyDir(r.Fremote, r.Flocal)
+	err := CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -71,7 +72,7 @@ func TestCopyNoTraverse(t *testing.T) {
 
 	file1 := r.WriteFile("sub dir/hello world", "hello world", t1)
 
-	err := CopyDir(r.Fremote, r.Flocal)
+	err := CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -89,7 +90,7 @@ func TestSyncNoTraverse(t *testing.T) {
 	file1 := r.WriteFile("sub dir/hello world", "hello world", t1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -107,7 +108,7 @@ func TestCopyWithDepth(t *testing.T) {
 	fs.Config.MaxDepth = 1
 	defer func() { fs.Config.MaxDepth = -1 }()
 
-	err := CopyDir(r.Fremote, r.Flocal)
+	err := CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1, file2)
@@ -135,7 +136,7 @@ func TestCopyWithFilesFrom(t *testing.T) {
 	}
 	defer unpatch()
 
-	err = CopyDir(r.Fremote, r.Flocal)
+	err = CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	unpatch()
 
@@ -152,7 +153,59 @@ func TestCopyEmptyDirectories(t *testing.T) {
 	require.NoError(t, err)
 	r.Mkdir(r.Fremote)
 
-	err = CopyDir(r.Fremote, r.Flocal)
+	err = CopyDir(r.Fremote, r.Flocal, true)
+	require.NoError(t, err)
+
+	fstest.CheckListingWithPrecision(
+		t,
+		r.Fremote,
+		[]fstest.Item{
+			file1,
+		},
+		[]string{
+			"sub dir",
+			"sub dir2",
+		},
+		fs.GetModifyWindow(r.Fremote),
+	)
+}
+
+// Test move empty directories
+func TestMoveEmptyDirectories(t *testing.T) {
+	r := fstest.NewRun(t)
+	defer r.Finalise()
+	file1 := r.WriteFile("sub dir/hello world", "hello world", t1)
+	err := operations.Mkdir(r.Flocal, "sub dir2")
+	require.NoError(t, err)
+	r.Mkdir(r.Fremote)
+
+	err = MoveDir(r.Fremote, r.Flocal, false, true)
+	require.NoError(t, err)
+
+	fstest.CheckListingWithPrecision(
+		t,
+		r.Fremote,
+		[]fstest.Item{
+			file1,
+		},
+		[]string{
+			"sub dir",
+			"sub dir2",
+		},
+		fs.GetModifyWindow(r.Fremote),
+	)
+}
+
+// Test sync empty directories
+func TestSyncEmptyDirectories(t *testing.T) {
+	r := fstest.NewRun(t)
+	defer r.Finalise()
+	file1 := r.WriteFile("sub dir/hello world", "hello world", t1)
+	err := operations.Mkdir(r.Flocal, "sub dir2")
+	require.NoError(t, err)
+	r.Mkdir(r.Fremote)
+
+	err = Sync(r.Fremote, r.Flocal, true)
 	require.NoError(t, err)
 
 	fstest.CheckListingWithPrecision(
@@ -181,7 +234,7 @@ func TestServerSideCopy(t *testing.T) {
 	defer finaliseCopy()
 	t.Logf("Server side copy (if possible) %v -> %v", r.Fremote, FremoteCopy)
 
-	err = CopyDir(FremoteCopy, r.Fremote)
+	err = CopyDir(FremoteCopy, r.Fremote, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, FremoteCopy, file1)
@@ -199,7 +252,7 @@ func TestCopyAfterDelete(t *testing.T) {
 	err := operations.Mkdir(r.Flocal, "")
 	require.NoError(t, err)
 
-	err = CopyDir(r.Fremote, r.Flocal)
+	err = CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal)
@@ -213,7 +266,7 @@ func TestCopyRedownload(t *testing.T) {
 	file1 := r.WriteObject("sub dir/hello world", "hello world", t1)
 	fstest.CheckItems(t, r.Fremote, file1)
 
-	err := CopyDir(r.Flocal, r.Fremote)
+	err := CopyDir(r.Flocal, r.Fremote, false)
 	require.NoError(t, err)
 
 	// Test with combined precision of local and remote as we copied it there and back
@@ -233,7 +286,7 @@ func TestSyncBasedOnCheckSum(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly one file.
@@ -245,7 +298,7 @@ func TestSyncBasedOnCheckSum(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred no files
@@ -267,7 +320,7 @@ func TestSyncSizeOnly(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly one file.
@@ -279,7 +332,7 @@ func TestSyncSizeOnly(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred no files
@@ -301,7 +354,7 @@ func TestSyncIgnoreSize(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly one file.
@@ -313,7 +366,7 @@ func TestSyncIgnoreSize(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred no files
@@ -329,7 +382,7 @@ func TestSyncIgnoreTimes(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly 0 files because the
@@ -340,7 +393,7 @@ func TestSyncIgnoreTimes(t *testing.T) {
 	defer func() { fs.Config.IgnoreTimes = false }()
 
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly one file even though the
@@ -360,7 +413,7 @@ func TestSyncIgnoreExisting(t *testing.T) {
 	defer func() { fs.Config.IgnoreExisting = false }()
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file1)
 	fstest.CheckItems(t, r.Fremote, file1)
@@ -368,7 +421,7 @@ func TestSyncIgnoreExisting(t *testing.T) {
 	// Change everything
 	r.WriteFile("existing", "newpotatoes", t2)
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	// Items should not change
 	fstest.CheckItems(t, r.Fremote, file1)
@@ -416,7 +469,7 @@ func TestSyncIgnoreErrors(t *testing.T) {
 
 	accounting.Stats.ResetCounters()
 	fs.CountError(nil)
-	assert.NoError(t, Sync(r.Fremote, r.Flocal))
+	assert.NoError(t, Sync(r.Fremote, r.Flocal, false))
 
 	fstest.CheckListingWithPrecision(
 		t,
@@ -459,7 +512,7 @@ func TestSyncAfterChangingModtimeOnly(t *testing.T) {
 	defer func() { fs.Config.DryRun = false }()
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -468,7 +521,7 @@ func TestSyncAfterChangingModtimeOnly(t *testing.T) {
 	fs.Config.DryRun = false
 
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -496,7 +549,7 @@ func TestSyncAfterChangingModtimeOnlyWithNoUpdateModTime(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file2)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -517,7 +570,7 @@ func TestSyncDoesntUpdateModtime(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file2)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Flocal, file1)
@@ -537,7 +590,7 @@ func TestSyncAfterAddingAFile(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file1)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file1, file2)
 	fstest.CheckItems(t, r.Fremote, file1, file2)
@@ -552,7 +605,7 @@ func TestSyncAfterChangingFilesSizeOnly(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file2)
 	fstest.CheckItems(t, r.Fremote, file2)
@@ -575,7 +628,7 @@ func TestSyncAfterChangingContentsOnly(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file2)
 	fstest.CheckItems(t, r.Fremote, file2)
@@ -591,7 +644,7 @@ func TestSyncAfterRemovingAFileAndAddingAFileDryRun(t *testing.T) {
 
 	fs.Config.DryRun = true
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	fs.Config.DryRun = false
 	require.NoError(t, err)
 
@@ -610,7 +663,7 @@ func TestSyncAfterRemovingAFileAndAddingAFile(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file1, file3)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file1, file3)
 	fstest.CheckItems(t, r.Fremote, file1, file3)
@@ -656,7 +709,7 @@ func TestSyncAfterRemovingAFileAndAddingAFileSubDir(t *testing.T) {
 	)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckListingWithPrecision(
@@ -726,7 +779,7 @@ func TestSyncAfterRemovingAFileAndAddingAFileSubDirWithErrors(t *testing.T) {
 
 	accounting.Stats.ResetCounters()
 	fs.CountError(nil)
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	assert.Equal(t, fs.ErrorNotDeleting, err)
 
 	fstest.CheckListingWithPrecision(
@@ -803,7 +856,7 @@ func TestCopyDeleteBefore(t *testing.T) {
 	fstest.CheckItems(t, r.Flocal, file2)
 
 	accounting.Stats.ResetCounters()
-	err := CopyDir(r.Fremote, r.Flocal)
+	err := CopyDir(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	fstest.CheckItems(t, r.Fremote, file1, file2)
@@ -826,14 +879,14 @@ func TestSyncWithExclude(t *testing.T) {
 	}()
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Fremote, file2, file1)
 
 	// Now sync the other way round and check enormous doesn't get
 	// deleted as it is excluded from the sync
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Flocal, r.Fremote)
+	err = Sync(r.Flocal, r.Fremote, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file2, file1, file3)
 }
@@ -856,14 +909,14 @@ func TestSyncWithExcludeAndDeleteExcluded(t *testing.T) {
 	}()
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Fremote, file2)
 
 	// Check sync the other way round to make sure enormous gets
 	// deleted even though it is excluded
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Flocal, r.Fremote)
+	err = Sync(r.Flocal, r.Fremote, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file2)
 }
@@ -898,7 +951,7 @@ func TestSyncWithUpdateOlder(t *testing.T) {
 	}()
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Fremote, oneO, twoF, threeO, fourF, fiveF)
 }
@@ -922,7 +975,7 @@ func TestSyncWithTrackRenames(t *testing.T) {
 	f2 := r.WriteFile("yam", "Yam Content", t2)
 
 	accounting.Stats.ResetCounters()
-	require.NoError(t, Sync(r.Fremote, r.Flocal))
+	require.NoError(t, Sync(r.Fremote, r.Flocal, false))
 
 	fstest.CheckItems(t, r.Fremote, f1, f2)
 	fstest.CheckItems(t, r.Flocal, f1, f2)
@@ -931,7 +984,7 @@ func TestSyncWithTrackRenames(t *testing.T) {
 	f2 = r.RenameFile(f2, "yaml")
 
 	accounting.Stats.ResetCounters()
-	require.NoError(t, Sync(r.Fremote, r.Flocal))
+	require.NoError(t, Sync(r.Fremote, r.Flocal, false))
 
 	fstest.CheckItems(t, r.Fremote, f1, f2)
 
@@ -968,7 +1021,7 @@ func testServerSideMove(t *testing.T, r *fstest.Run, withFilter, testDeleteEmpty
 
 	// Do server side move
 	accounting.Stats.ResetCounters()
-	err = MoveDir(FremoteMove, r.Fremote, testDeleteEmptyDirs)
+	err = MoveDir(FremoteMove, r.Fremote, testDeleteEmptyDirs, false)
 	require.NoError(t, err)
 
 	if withFilter {
@@ -995,7 +1048,7 @@ func testServerSideMove(t *testing.T, r *fstest.Run, withFilter, testDeleteEmpty
 
 	// Move it back to a new empty remote, dst does not exist this time
 	accounting.Stats.ResetCounters()
-	err = MoveDir(FremoteMove2, FremoteMove, testDeleteEmptyDirs)
+	err = MoveDir(FremoteMove2, FremoteMove, testDeleteEmptyDirs, false)
 	require.NoError(t, err)
 
 	if withFilter {
@@ -1020,7 +1073,7 @@ func TestMoveWithDeleteEmptySrcDirs(t *testing.T) {
 	r.Mkdir(r.Fremote)
 
 	// run move with --delete-empty-src-dirs
-	err := MoveDir(r.Fremote, r.Flocal, true)
+	err := MoveDir(r.Fremote, r.Flocal, true, false)
 	require.NoError(t, err)
 
 	fstest.CheckListingWithPrecision(
@@ -1040,7 +1093,7 @@ func TestMoveWithoutDeleteEmptySrcDirs(t *testing.T) {
 	file2 := r.WriteFile("nested/sub dir/file", "nested", t1)
 	r.Mkdir(r.Fremote)
 
-	err := MoveDir(r.Fremote, r.Flocal, false)
+	err := MoveDir(r.Fremote, r.Flocal, false, false)
 	require.NoError(t, err)
 
 	fstest.CheckListingWithPrecision(
@@ -1101,16 +1154,37 @@ func TestServerSideMoveOverlap(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file1)
 
 	// Subdir move with no filters should return ErrorCantMoveOverlapping
-	err = MoveDir(FremoteMove, r.Fremote, false)
-	assert.EqualError(t, err, fs.ErrorCantMoveOverlapping.Error())
+	err = MoveDir(FremoteMove, r.Fremote, false, false)
+	assert.EqualError(t, err, fs.ErrorOverlapping.Error())
 
 	// Now try with a filter which should also fail with ErrorCantMoveOverlapping
 	filter.Active.Opt.MinSize = 40
 	defer func() {
 		filter.Active.Opt.MinSize = -1
 	}()
-	err = MoveDir(FremoteMove, r.Fremote, false)
-	assert.EqualError(t, err, fs.ErrorCantMoveOverlapping.Error())
+	err = MoveDir(FremoteMove, r.Fremote, false, false)
+	assert.EqualError(t, err, fs.ErrorOverlapping.Error())
+}
+
+// Test a sync with overlap
+func TestSyncOverlap(t *testing.T) {
+	r := fstest.NewRun(t)
+	defer r.Finalise()
+
+	subRemoteName := r.FremoteName + "/rclone-sync-test"
+	FremoteSync, err := fs.NewFs(subRemoteName)
+	require.NoError(t, err)
+
+	checkErr := func(err error) {
+		require.Error(t, err)
+		assert.True(t, fserrors.IsFatalError(err))
+		assert.Equal(t, fs.ErrorOverlapping.Error(), err.Error())
+	}
+
+	checkErr(Sync(FremoteSync, r.Fremote, false))
+	checkErr(Sync(r.Fremote, FremoteSync, false))
+	checkErr(Sync(r.Fremote, r.Fremote, false))
+	checkErr(Sync(FremoteSync, FremoteSync, false))
 }
 
 // Test with BackupDir set
@@ -1145,7 +1219,7 @@ func testSyncBackupDir(t *testing.T, suffix string) {
 	require.NoError(t, err)
 
 	accounting.Stats.ResetCounters()
-	err = Sync(fdst, r.Flocal)
+	err = Sync(fdst, r.Flocal, false)
 	require.NoError(t, err)
 
 	// one should be moved to the backup dir and the new one installed
@@ -1166,7 +1240,7 @@ func testSyncBackupDir(t *testing.T, suffix string) {
 	// This should delete three and overwrite one again, checking
 	// the files got overwritten correctly in backup-dir
 	accounting.Stats.ResetCounters()
-	err = Sync(fdst, r.Flocal)
+	err = Sync(fdst, r.Flocal, false)
 	require.NoError(t, err)
 
 	// one should be moved to the backup dir and the new one installed
@@ -1203,7 +1277,7 @@ func TestSyncUTFNorm(t *testing.T) {
 	fstest.CheckItems(t, r.Fremote, file2)
 
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 
 	// We should have transferred exactly one file, but kept the
@@ -1229,7 +1303,7 @@ func TestSyncImmutable(t *testing.T) {
 
 	// Should succeed
 	accounting.Stats.ResetCounters()
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	require.NoError(t, err)
 	fstest.CheckItems(t, r.Flocal, file1)
 	fstest.CheckItems(t, r.Fremote, file1)
@@ -1241,7 +1315,7 @@ func TestSyncImmutable(t *testing.T) {
 
 	// Should fail with ErrorImmutableModified and not modify local or remote files
 	accounting.Stats.ResetCounters()
-	err = Sync(r.Fremote, r.Flocal)
+	err = Sync(r.Fremote, r.Flocal, false)
 	assert.EqualError(t, err, fs.ErrorImmutableModified.Error())
 	fstest.CheckItems(t, r.Flocal, file2)
 	fstest.CheckItems(t, r.Fremote, file1)
@@ -1277,6 +1351,6 @@ func TestAbort(t *testing.T) {
 
 	accounting.Stats.ResetCounters()
 
-	err := Sync(r.Fremote, r.Flocal)
+	err := Sync(r.Fremote, r.Flocal, false)
 	assert.Equal(t, accounting.ErrorMaxTransferLimitReached, err)
 }

fstest/test_all/config.yaml

@@ -138,3 +138,7 @@ backends:
    remote:   "TestUnion:"
    subdir:   false
    fastlist: false
+ - backend:  "koofr"
+   remote:   "TestKoofr:"
+   subdir:   false
+   fastlist: false

go.mod

@@ -23,6 +23,8 @@ require (
 	github.com/jlaffaye/ftp v0.0.0-20190126081051-8019e6774408
 	github.com/jtolds/gls v4.2.1+incompatible // indirect
 	github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 // indirect
+	github.com/koofr/go-httpclient v0.0.0-20180104120329-03786175608a // indirect
+	github.com/koofr/go-koofrclient v0.0.0-20190131164641-7f327592caff
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/ncw/go-acd v0.0.0-20171120105400-887eb06ab6a2
@@ -42,7 +44,6 @@ require (
 	github.com/spf13/pflag v1.0.3
 	github.com/stretchr/testify v1.3.0
 	github.com/t3rm1n4l/go-mega v0.0.0-20190205172012-55a226cf41da
-	github.com/thinkhy/go-adb v0.0.0-20190123053734-b4b48de70418
 	github.com/xanzy/ssh-agent v0.2.0
 	github.com/yunify/qingstor-sdk-go v2.2.15+incompatible
 	go.etcd.io/bbolt v1.3.2 // indirect
@@ -50,12 +51,10 @@ require (
 	golang.org/x/net v0.0.0-20190206173232-65e2d4e15006
 	golang.org/x/oauth2 v0.0.0-20190130055435-99b60b757ec1
 	golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4
-	golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3
+	golang.org/x/sys v0.0.0-20190204203706-41f3e6584952
 	golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2
 	golang.org/x/time v0.0.0-20181108054448-85acf8d2951c
 	google.golang.org/api v0.1.0
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 )
-
-replace github.com/thinkhy/go-adb v0.0.0-20190123053734-b4b48de70418 => ../../../github.com/thinkhy/go-adb

go.sum

@@ -23,9 +23,6 @@ github.com/a8m/tree v0.0.0-20181222104329-6a0b80129de4 h1:mK1/QgFPU4osbhjJ26B1w7
 github.com/a8m/tree v0.0.0-20181222104329-6a0b80129de4/go.mod h1:FSdwKX97koS5efgm8WevNf7XS3PqtyFkKDDXrz778cg=
 github.com/abbot/go-http-auth v0.4.0 h1:QjmvZ5gSC7jm3Zg54DqWE/T5m1t2AfDu6QlXJT0EVT0=
 github.com/abbot/go-http-auth v0.4.0/go.mod h1:Cz6ARTIzApMJDzh5bRMSUou6UMSp0IEXg9km/ci7TJM=
-github.com/alecthomas/kingpin v2.2.6+incompatible/go.mod h1:59OFYbFVLKQKq+mqrL6Rw5bR0c3ACQaawgXx0QYndlE=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/anacrolix/dms v0.0.0-20180117034613-8af4925bffb5 h1:lmyFvZXNGOmsKCYXNwzDLWafnxeewxsFwdsvTvSC1sg=
 github.com/anacrolix/dms v0.0.0-20180117034613-8af4925bffb5/go.mod h1:DGqLjaZ3ziKKNRt+U5Q9PLWJ52Q/4rxfaaH/b3QYKaE=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
@@ -35,7 +32,6 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/billziss-gh/cgofuse v1.1.0 h1:tATn9ZDvuPcOVlvR4tJitGHgAqy1y18+4mKmRfdfjec=
 github.com/billziss-gh/cgofuse v1.1.0/go.mod h1:LJjoaUojlVjgo5GQoEJTcJNqZJeRU0nCR84CyxKt2YM=
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
-github.com/cheggaaa/pb v2.0.6+incompatible/go.mod h1:pQciLPpbU0oxA0h+VJYYLxO+XeDQb5pZijXscXHm81s=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/coreos/bbolt v1.3.2 h1:wZwiHHUieZCquLkDL0B8UhzreNWsPHooDAG3q34zk0s=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
@@ -79,10 +75,6 @@ github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e h1:JKmoR8x90Iww1
 github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
 github.com/grpc-ecosystem/grpc-gateway v1.5.0/go.mod h1:RSKVYQBd5MCa4OVpNdGskqpgL2+G+NZTnrVHpWWfpdw=
-github.com/hashicorp/go-cleanhttp v0.5.0 h1:wvCrVc9TjDls6+YGAF2hAifE1E5U1+b4tH6KdvN3Gig=
-github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
-github.com/hashicorp/go-retryablehttp v0.5.2 h1:AoISa4P4IsW0/m4T6St8Yw38gTl5GtBAgfkhYh1xAz4=
-github.com/hashicorp/go-retryablehttp v0.5.2/go.mod h1:9B5zBasrRhHXnJnui7y6sL7es7NDiJgTc6Er0maI1Xs=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0B/fFc00Y+Rasa88328GlI/XbtyysCtTHZS8h7IrBU=
@@ -95,6 +87,10 @@ github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVY
 github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 h1:PJPDf8OUfOK1bb/NeTKd4f1QXZItOX389VN3B6qC8ro=
 github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1/go.mod h1:1NbS8ALrpOvjt0rHPNLyCIeMtbizbir8U//inJ+zuB8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/koofr/go-httpclient v0.0.0-20180104120329-03786175608a h1:W+gnfphB7WpRj0rbTF40e3edULfri4fou2kUFw6AF3A=
+github.com/koofr/go-httpclient v0.0.0-20180104120329-03786175608a/go.mod h1:3xszwh+rNrYk1r9SStc4iJ326gne1OaBcrdB1ACsbzI=
+github.com/koofr/go-koofrclient v0.0.0-20190131164641-7f327592caff h1:GlfzG8bgyoJYz+5sMvGpYnHrg4veNVNnDGuE9hTEMHk=
+github.com/koofr/go-koofrclient v0.0.0-20190131164641-7f327592caff/go.mod h1:MRAz4Gsxd+OzrZ0owwrUHc0zLESL+1Y5syqK/sJxK2A=
 github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
@@ -103,8 +99,6 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.3/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/mattn/go-colorable v0.1.0/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
-github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
 github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
 github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
@@ -179,7 +173,6 @@ github.com/spf13/cobra v0.0.4-0.20190109003409-7547e83b2d85/go.mod h1:1l0Ry5zgKv
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
@@ -189,8 +182,6 @@ github.com/t3rm1n4l/go-mega v0.0.0-20190205172012-55a226cf41da/go.mod h1:XWL4vDy
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 github.com/xanzy/ssh-agent v0.2.0 h1:Adglfbi5p9Z0BmK2oKU9nTG+zKfniSfnaMYB+ULd+Ro=
 github.com/xanzy/ssh-agent v0.2.0/go.mod h1:0NyE30eGUDliuLEHJgYte/zncp2zdTStcOnWhgSqHD8=
-github.com/yosemite-open/go-adb v0.0.0-20181206003817-d40962019194 h1:hQ7oP/X/5JR3gGKEEEZU3uihkDePXlFoTwr0XDu5CKg=
-github.com/yosemite-open/go-adb v0.0.0-20181206003817-d40962019194/go.mod h1:OoY1zUwKq/hv/6hBuQxzSRNu1XZ289eXaDNgoHa+3lU=
 github.com/yunify/qingstor-sdk-go v2.2.15+incompatible h1:/Z0q3/eSMoPYAuRmhjWtuGSmVVciFC6hfm3yfCKuvz0=
 github.com/yunify/qingstor-sdk-go v2.2.15+incompatible/go.mod h1:w6wqLDQ5bBTzxGJ55581UrSwLrsTAsdo9N6yX/8d9RY=
 go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=
@@ -230,10 +221,6 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181029174526-d69651ed3497/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952 h1:FDfvYgoVsA7TTZSbgiqjAbfPbK47CNHdWl3h/PJtii0=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190209173611-3b5209105503 h1:5SvYFrOM3W8Mexn9/oA44Ji7vhXAZQ9hiP+1Q/DMrWg=
-golang.org/x/sys v0.0.0-20190209173611-3b5209105503/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3 h1:+KlxhGbYkFs8lMfwKn+2ojry1ID5eBSMXprS2u/wqCE=
-golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2 h1:z99zHgr7hKfrUcX/KsoJk5FJfjTceCKIp96+biqP4To=
@@ -261,18 +248,12 @@ google.golang.org/genproto v0.0.0-20190201180003-4b09977fb922/go.mod h1:L3J43x8/
 google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
-gopkg.in/VividCortex/ewma.v1 v1.1.1/go.mod h1:TekXuFipeiHWiAlO1+wSS23vTcyFau5u3rxXUSXj710=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/cheggaaa/pb.v2 v2.0.6/go.mod h1:0CiZ1p8pvtxBlQpLXkHuUTpdJ1shm3OqCF1QugkjHL4=
-gopkg.in/fatih/color.v1 v1.7.0/go.mod h1:P7yosIhqIl/sX8J8UypY5M+dDpD2KmyfP5IRs5v/fo0=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
-gopkg.in/mattn/go-colorable.v0 v0.1.0/go.mod h1:BVJlBXzARQxdi3nZo6f6bnl5yR20/tOL6p+V0KejgSY=
-gopkg.in/mattn/go-isatty.v0 v0.0.4/go.mod h1:wt691ab7g0X4ilKZNmMII3egK0bTxl37fEn/Fwbd8gc=
-gopkg.in/mattn/go-runewidth.v0 v0.0.4/go.mod h1:BmXejnxvhwdaATwiJbB1vZ2dtXkQKZGu9yLFCZb4msQ=
 gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=

lib/atexit/atexit.go

@@ -13,23 +13,32 @@ import (
 )
 
 var (
-	fns          []func()
+	fns          = make(map[FnHandle]bool)
+	fnsMutex     sync.Mutex
 	exitChan     chan os.Signal
 	exitOnce     sync.Once
 	registerOnce sync.Once
 )
 
-// Register a function to be called on exit
-func Register(fn func()) {
-	fns = append(fns, fn)
+// FnHandle is the type of the handle returned by function `Register`
+// that can be used to unregister an at-exit function
+type FnHandle *func()
+
+// Register a function to be called on exit.
+// Returns a handle which can be used to unregister the function with `Unregister`.
+func Register(fn func()) FnHandle {
+	fnsMutex.Lock()
+	fns[&fn] = true
+	fnsMutex.Unlock()
+
 	// Run AtExit handlers on SIGINT or SIGTERM so everything gets
 	// tidied up properly
 	registerOnce.Do(func() {
 		exitChan = make(chan os.Signal, 1)
 		signal.Notify(exitChan, os.Interrupt) // syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT
 		go func() {
-			sig, closed := <-exitChan
-			if closed || sig == nil {
+			sig := <-exitChan
+			if sig == nil {
 				return
 			}
 			fs.Infof(nil, "Signal received: %s", sig)
@@ -38,6 +47,15 @@ func Register(fn func()) {
 			os.Exit(0)
 		}()
 	})
+
+	return &fn
+}
+
+// Unregister a function using the handle returned by `Register`
+func Unregister(handle FnHandle) {
+	fnsMutex.Lock()
+	defer fnsMutex.Unlock()
+	delete(fns, handle)
 }
 
 // IgnoreSignals disables the signal handler and prevents Run from beeing executed automatically
@@ -53,8 +71,10 @@ func IgnoreSignals() {
 // Run all the at exit functions if they haven't been run already
 func Run() {
 	exitOnce.Do(func() {
-		for _, fn := range fns {
-			fn()
+		fnsMutex.Lock()
+		defer fnsMutex.Unlock()
+		for fnHandle := range fns {
+			(*fnHandle)()
 		}
 	})
 }

lib/errors/errors.go

@@ -0,0 +1,76 @@
+package errors
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// New returns an error that formats as the given text.
+func New(text string) error {
+	return errors.New(text)
+}
+
+// Errorf formats according to a format specifier and returns the string
+// as a value that satisfies error.
+func Errorf(format string, a ...interface{}) error {
+	return fmt.Errorf(format, a...)
+}
+
+// WalkFunc is the signature of the Walk callback function. The function gets the
+// current error in the chain and should return true if the chain processing
+// should be aborted.
+type WalkFunc func(error) bool
+
+// Walk invokes the given function for each error in the chain. If the
+// provided functions returns true or no further cause can be found, the process
+// is stopped and no further calls will be made.
+//
+// The next error in the chain is determined by the following rules:
+// - If the current error has a `Cause() error` method (github.com/pkg/errors),
+//   the return value of this method is used.
+// - If the current error has a `Unwrap() error` method (golang.org/x/xerrors),
+//   the return value of this method is used.
+// - Common errors in the Go runtime that contain an Err field will use this value.
+func Walk(err error, f WalkFunc) {
+	for prev := err; err != nil; prev = err {
+		if f(err) {
+			return
+		}
+
+		switch e := err.(type) {
+		case causer:
+			err = e.Cause()
+		case wrapper:
+			err = e.Unwrap()
+		default:
+			// Unpack any struct or *struct with a field of name Err which satisfies
+			// the error interface. This includes *url.Error, *net.OpError,
+			// *os.SyscallError and many others in the stdlib.
+			errType := reflect.TypeOf(err)
+			errValue := reflect.ValueOf(err)
+			if errValue.IsValid() && errType.Kind() == reflect.Ptr {
+				errType = errType.Elem()
+				errValue = errValue.Elem()
+			}
+			if errValue.IsValid() && errType.Kind() == reflect.Struct {
+				if errField := errValue.FieldByName("Err"); errField.IsValid() {
+					errFieldValue := errField.Interface()
+					if newErr, ok := errFieldValue.(error); ok {
+						err = newErr
+					}
+				}
+			}
+		}
+		if err == prev {
+			break
+		}
+	}
+}
+
+type causer interface {
+	Cause() error
+}
+type wrapper interface {
+	Unwrap() error
+}

lib/errors/errors_test.go

@@ -0,0 +1,90 @@
+package errors_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/ncw/rclone/lib/errors"
+)
+
+func TestWalk(t *testing.T) {
+	origin := errors.New("origin")
+
+	for _, test := range []struct {
+		err   error
+		calls int
+		last  error
+	}{
+		{causerError{nil}, 1, causerError{nil}},
+		{wrapperError{nil}, 1, wrapperError{nil}},
+		{reflectError{nil}, 1, reflectError{nil}},
+		{causerError{origin}, 2, origin},
+		{wrapperError{origin}, 2, origin},
+		{reflectError{origin}, 2, origin},
+		{causerError{reflectError{origin}}, 3, origin},
+		{wrapperError{causerError{origin}}, 3, origin},
+		{reflectError{wrapperError{origin}}, 3, origin},
+		{causerError{reflectError{causerError{origin}}}, 4, origin},
+		{wrapperError{causerError{wrapperError{origin}}}, 4, origin},
+		{reflectError{wrapperError{reflectError{origin}}}, 4, origin},
+
+		{stopError{nil}, 1, stopError{nil}},
+		{stopError{causerError{nil}}, 1, stopError{causerError{nil}}},
+		{stopError{wrapperError{nil}}, 1, stopError{wrapperError{nil}}},
+		{stopError{reflectError{nil}}, 1, stopError{reflectError{nil}}},
+		{causerError{stopError{origin}}, 2, stopError{origin}},
+		{wrapperError{stopError{origin}}, 2, stopError{origin}},
+		{reflectError{stopError{origin}}, 2, stopError{origin}},
+		{causerError{reflectError{stopError{nil}}}, 3, stopError{nil}},
+		{wrapperError{causerError{stopError{nil}}}, 3, stopError{nil}},
+		{reflectError{wrapperError{stopError{nil}}}, 3, stopError{nil}},
+	} {
+		var last error
+		calls := 0
+		errors.Walk(test.err, func(err error) bool {
+			calls++
+			last = err
+			_, stop := err.(stopError)
+			return stop
+		})
+		assert.Equal(t, test.calls, calls)
+		assert.Equal(t, test.last, last)
+	}
+}
+
+type causerError struct {
+	err error
+}
+type wrapperError struct {
+	err error
+}
+type reflectError struct {
+	Err error
+}
+type stopError struct {
+	err error
+}
+
+func (e causerError) Error() string {
+	return fmt.Sprintf("causerError(%s)", e.err)
+}
+func (e causerError) Cause() error {
+	return e.err
+}
+func (e wrapperError) Unwrap() error {
+	return e.err
+}
+func (e wrapperError) Error() string {
+	return fmt.Sprintf("wrapperError(%s)", e.err)
+}
+func (e reflectError) Error() string {
+	return fmt.Sprintf("reflectError(%s)", e.Err)
+}
+func (e stopError) Error() string {
+	return fmt.Sprintf("stopError(%s)", e.err)
+}
+func (e stopError) Cause() error {
+	return e.err
+}

lib/pacer/pacer.go

@@ -2,74 +2,69 @@
 package pacer
 
 import (
-	"context"
-	"math/rand"
 	"sync"
 	"time"
 
-	"github.com/ncw/rclone/fs"
-	"github.com/ncw/rclone/fs/fserrors"
-	"golang.org/x/time/rate"
+	"github.com/ncw/rclone/lib/errors"
 )
 
-// Pacer state
-type Pacer struct {
-	mu                 sync.Mutex    // Protecting read/writes
-	minSleep           time.Duration // minimum sleep time
-	maxSleep           time.Duration // maximum sleep time
-	burst              int           // number of calls to send without rate limiting
-	limiter            *rate.Limiter // rate limiter for the minsleep
-	decayConstant      uint          // decay constant
-	attackConstant     uint          // attack constant
-	pacer              chan struct{} // To pace the operations
-	sleepTime          time.Duration // Time to sleep for each transaction
-	retries            int           // Max number of retries
-	maxConnections     int           // Maximum number of concurrent connections
-	connTokens         chan struct{} // Connection tokens
-	calculatePace      func(bool)    // switchable pacing algorithm - call with mu held
-	consecutiveRetries int           // number of consecutive retries
+// State represents the public Pacer state that will be passed to the
+// configured Calculator
+type State struct {
+	SleepTime          time.Duration // current time to sleep before adding the pacer token back
+	ConsecutiveRetries int           // number of consecutive retries, will be 0 when the last invoker call returned false
+	LastError          error         // the error returned by the last invoker call or nil
 }
 
-// Type is for selecting different pacing algorithms
-type Type int
+// Calculator is a generic calculation function for a Pacer.
+type Calculator interface {
+	// Calculate takes the current Pacer state and returns the sleep time after which
+	// the next Pacer call will be done.
+	Calculate(state State) time.Duration
+}
 
-const (
-	// DefaultPacer is a truncated exponential attack and decay.
-	//
-	// On retries the sleep time is doubled, on non errors then
-	// sleeptime decays according to the decay constant as set
-	// with SetDecayConstant.
-	//
-	// The sleep never goes below that set with SetMinSleep or
-	// above that set with SetMaxSleep.
-	DefaultPacer = Type(iota)
+// Pacer is the primary type of the pacer package. It allows to retry calls
+// with a configurable delay in between.
+type Pacer struct {
+	pacerOptions
+	mu         sync.Mutex    // Protecting read/writes
+	pacer      chan struct{} // To pace the operations
+	connTokens chan struct{} // Connection tokens
+	state      State
+}
+type pacerOptions struct {
+	maxConnections int         // Maximum number of concurrent connections
+	retries        int         // Max number of retries
+	calculator     Calculator  // switchable pacing algorithm - call with mu held
+	invoker        InvokerFunc // wrapper function used to invoke the target function
+}
 
-	// AmazonCloudDrivePacer is a specialised pacer for Amazon Drive
-	//
-	// It implements a truncated exponential backoff strategy with
-	// randomization.  Normally operations are paced at the
-	// interval set with SetMinSleep.  On errors the sleep timer
-	// is set to 0..2**retries seconds.
-	//
-	// See https://developer.amazon.com/public/apis/experience/cloud-drive/content/restful-api-best-practices
-	AmazonCloudDrivePacer
+// InvokerFunc is the signature of the wrapper function used to invoke the
+// target function in Pacer.
+type InvokerFunc func(try, tries int, f Paced) (bool, error)
 
-	// GoogleDrivePacer is a specialised pacer for Google Drive
-	//
-	// It implements a truncated exponential backoff strategy with
-	// randomization.  Normally operations are paced at the
-	// interval set with SetMinSleep.  On errors the sleep timer
-	// is set to (2 ^ n) + random_number_milliseconds seconds
-	//
-	// See https://developers.google.com/drive/v2/web/handle-errors#exponential-backoff
-	GoogleDrivePacer
+// Option can be used in New to configure the Pacer.
+type Option func(*pacerOptions)
 
-	// S3Pacer is a specialised pacer for S3
-	//
-	// It is basically the defaultPacer, but allows the sleep time to go to 0
-	// when things are going well.
-	S3Pacer
-)
+// CalculatorOption sets a Calculator for the new Pacer.
+func CalculatorOption(c Calculator) Option {
+	return func(p *pacerOptions) { p.calculator = c }
+}
+
+// RetriesOption sets the retries number for the new Pacer.
+func RetriesOption(retries int) Option {
+	return func(p *pacerOptions) { p.retries = retries }
+}
+
+// MaxConnectionsOption sets the maximum connections number for the new Pacer.
+func MaxConnectionsOption(maxConnections int) Option {
+	return func(p *pacerOptions) { p.maxConnections = maxConnections }
+}
+
+// InvokerOption sets a InvokerFunc for the new Pacer.
+func InvokerOption(invoker InvokerFunc) Option {
+	return func(p *pacerOptions) { p.invoker = invoker }
+}
 
 // Paced is a function which is called by the Call and CallNoRetry
 // methods.  It should return a boolean, true if it would like to be
@@ -77,19 +72,27 @@ const (
 // wrapped in a RetryError.
 type Paced func() (bool, error)
 
-// New returns a Pacer with sensible defaults
-func New() *Pacer {
-	p := &Pacer{
-		maxSleep:       2 * time.Second,
-		decayConstant:  2,
-		attackConstant: 1,
-		retries:        fs.Config.LowLevelRetries,
-		pacer:          make(chan struct{}, 1),
+// New returns a Pacer with sensible defaults.
+func New(options ...Option) *Pacer {
+	opts := pacerOptions{
+		maxConnections: 10,
+		retries:        3,
 	}
-	p.sleepTime = p.minSleep
-	p.SetPacer(DefaultPacer)
-	p.SetMaxConnections(fs.Config.Checkers + fs.Config.Transfers)
-	p.SetMinSleep(10 * time.Millisecond)
+	for _, o := range options {
+		o(&opts)
+	}
+	p := &Pacer{
+		pacerOptions: opts,
+		pacer:        make(chan struct{}, 1),
+	}
+	if p.calculator == nil {
+		p.SetCalculator(nil)
+	}
+	p.state.SleepTime = p.calculator.Calculate(p.state)
+	if p.invoker == nil {
+		p.invoker = invoke
+	}
+	p.SetMaxConnections(p.maxConnections)
 
 	// Put the first pacing token in
 	p.pacer <- struct{}{}
@@ -97,54 +100,11 @@ func New() *Pacer {
 	return p
 }
 
-// SetSleep sets the current sleep time
-func (p *Pacer) SetSleep(t time.Duration) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.sleepTime = t
-	return p
-}
-
-// GetSleep gets the current sleep time
-func (p *Pacer) GetSleep() time.Duration {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	return p.sleepTime
-}
-
-// SetMinSleep sets the minimum sleep time for the pacer
-func (p *Pacer) SetMinSleep(t time.Duration) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.minSleep = t
-	p.sleepTime = p.minSleep
-	p.limiter = rate.NewLimiter(rate.Every(p.minSleep), p.burst)
-	return p
-}
-
-// SetBurst sets the burst with no limiting of the pacer
-func (p *Pacer) SetBurst(n int) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.burst = n
-	p.limiter = rate.NewLimiter(rate.Every(p.minSleep), p.burst)
-	return p
-}
-
-// SetMaxSleep sets the maximum sleep time for the pacer
-func (p *Pacer) SetMaxSleep(t time.Duration) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.maxSleep = t
-	p.sleepTime = p.minSleep
-	return p
-}
-
 // SetMaxConnections sets the maximum number of concurrent connections.
 // Setting the value to 0 will allow unlimited number of connections.
 // Should not be changed once you have started calling the pacer.
 // By default this will be set to fs.Config.Checkers.
-func (p *Pacer) SetMaxConnections(n int) *Pacer {
+func (p *Pacer) SetMaxConnections(n int) {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 	p.maxConnections = n
@@ -156,61 +116,34 @@ func (p *Pacer) SetMaxConnections(n int) *Pacer {
 			p.connTokens <- struct{}{}
 		}
 	}
-	return p
 }
 
-// SetDecayConstant sets the decay constant for the pacer
-//
-// This is the speed the time falls back to the minimum after errors
-// have occurred.
-//
-// bigger for slower decay, exponential. 1 is halve, 0 is go straight to minimum
-func (p *Pacer) SetDecayConstant(decay uint) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.decayConstant = decay
-	return p
-}
-
-// SetAttackConstant sets the attack constant for the pacer
-//
-// This is the speed the time grows from the minimum after errors have
-// occurred.
-//
-// bigger for slower attack, 1 is double, 0 is go straight to maximum
-func (p *Pacer) SetAttackConstant(attack uint) *Pacer {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	p.attackConstant = attack
-	return p
-}
-
-// SetRetries sets the max number of tries for Call
-func (p *Pacer) SetRetries(retries int) *Pacer {
+// SetRetries sets the max number of retries for Call
+func (p *Pacer) SetRetries(retries int) {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 	p.retries = retries
-	return p
 }
 
-// SetPacer sets the pacing algorithm
+// SetCalculator sets the pacing algorithm. Don't modify the Calculator object
+// afterwards, use the ModifyCalculator method when needed.
 //
-// It will choose the default algorithm if an incorrect value is
-// passed in.
-func (p *Pacer) SetPacer(t Type) *Pacer {
+// It will choose the default algorithm if nil is passed in.
+func (p *Pacer) SetCalculator(c Calculator) {
 	p.mu.Lock()
 	defer p.mu.Unlock()
-	switch t {
-	case AmazonCloudDrivePacer:
-		p.calculatePace = p.acdPacer
-	case GoogleDrivePacer:
-		p.calculatePace = p.drivePacer
-	case S3Pacer:
-		p.calculatePace = p.s3Pacer
-	default:
-		p.calculatePace = p.defaultPacer
+	if c == nil {
+		c = NewDefault()
 	}
-	return p
+	p.calculator = c
+}
+
+// ModifyCalculator calls the given function with the currently configured
+// Calculator and the Pacer lock held.
+func (p *Pacer) ModifyCalculator(f func(Calculator)) {
+	p.mu.Lock()
+	f(p.calculator)
+	p.mu.Unlock()
 }
 
 // Start a call to the API
@@ -230,170 +163,29 @@ func (p *Pacer) beginCall() {
 
 	p.mu.Lock()
 	// Restart the timer
-	go func(sleepTime, minSleep time.Duration) {
-		// fs.Debugf(f, "New sleep for %v at %v", t, time.Now())
-		// Sleep the minimum time with the rate limiter
-		if minSleep > 0 && sleepTime >= minSleep {
-			_ = p.limiter.Wait(context.Background())
-			sleepTime -= minSleep
-		}
-		// Then sleep the remaining time
-		if sleepTime > 0 {
-			time.Sleep(sleepTime)
-		}
+	go func(t time.Duration) {
+		time.Sleep(t)
 		p.pacer <- struct{}{}
-	}(p.sleepTime, p.minSleep)
+	}(p.state.SleepTime)
 	p.mu.Unlock()
 }
 
-// exponentialImplementation implements a exponentialImplementation up
-// and down pacing algorithm
-//
-// See the description for DefaultPacer
-//
-// This should calculate a new sleepTime.  It takes a boolean as to
-// whether the operation should be retried or not.
-//
-// Call with p.mu held
-func (p *Pacer) defaultPacer(retry bool) {
-	oldSleepTime := p.sleepTime
-	if retry {
-		if p.attackConstant == 0 {
-			p.sleepTime = p.maxSleep
-		} else {
-			p.sleepTime = (p.sleepTime << p.attackConstant) / ((1 << p.attackConstant) - 1)
-		}
-		if p.sleepTime > p.maxSleep {
-			p.sleepTime = p.maxSleep
-		}
-		if p.sleepTime != oldSleepTime {
-			fs.Debugf("pacer", "Rate limited, increasing sleep to %v", p.sleepTime)
-		}
-	} else {
-		p.sleepTime = (p.sleepTime<<p.decayConstant - p.sleepTime) >> p.decayConstant
-		if p.sleepTime < p.minSleep {
-			p.sleepTime = p.minSleep
-		}
-		if p.sleepTime != oldSleepTime {
-			fs.Debugf("pacer", "Reducing sleep to %v", p.sleepTime)
-		}
-	}
-}
-
-// acdPacer implements a truncated exponential backoff
-// strategy with randomization for Amazon Drive
-//
-// See the description for AmazonCloudDrivePacer
-//
-// This should calculate a new sleepTime.  It takes a boolean as to
-// whether the operation should be retried or not.
-//
-// Call with p.mu held
-func (p *Pacer) acdPacer(retry bool) {
-	consecutiveRetries := p.consecutiveRetries
-	if consecutiveRetries == 0 {
-		if p.sleepTime != p.minSleep {
-			p.sleepTime = p.minSleep
-			fs.Debugf("pacer", "Resetting sleep to minimum %v on success", p.sleepTime)
-		}
-	} else {
-		if consecutiveRetries > 9 {
-			consecutiveRetries = 9
-		}
-		// consecutiveRetries starts at 1 so
-		// maxSleep is 2**(consecutiveRetries-1) seconds
-		maxSleep := time.Second << uint(consecutiveRetries-1)
-		// actual sleep is random from 0..maxSleep
-		p.sleepTime = time.Duration(rand.Int63n(int64(maxSleep)))
-		if p.sleepTime < p.minSleep {
-			p.sleepTime = p.minSleep
-		}
-		fs.Debugf("pacer", "Rate limited, sleeping for %v (%d consecutive low level retries)", p.sleepTime, p.consecutiveRetries)
-	}
-}
-
-// drivePacer implements a truncated exponential backoff strategy with
-// randomization for Google Drive
-//
-// See the description for GoogleDrivePacer
-//
-// This should calculate a new sleepTime.  It takes a boolean as to
-// whether the operation should be retried or not.
-//
-// Call with p.mu held
-func (p *Pacer) drivePacer(retry bool) {
-	consecutiveRetries := p.consecutiveRetries
-	if consecutiveRetries == 0 {
-		if p.sleepTime != p.minSleep {
-			p.sleepTime = p.minSleep
-			fs.Debugf("pacer", "Resetting sleep to minimum %v on success", p.sleepTime)
-		}
-	} else {
-		if consecutiveRetries > 5 {
-			consecutiveRetries = 5
-		}
-		// consecutiveRetries starts at 1 so go from 1,2,3,4,5,5 => 1,2,4,8,16,16
-		// maxSleep is 2**(consecutiveRetries-1) seconds + random milliseconds
-		p.sleepTime = time.Second<<uint(consecutiveRetries-1) + time.Duration(rand.Int63n(int64(time.Second)))
-		fs.Debugf("pacer", "Rate limited, sleeping for %v (%d consecutive low level retries)", p.sleepTime, p.consecutiveRetries)
-	}
-}
-
-// s3Pacer implements a pacer compatible with our expectations of S3, where it tries to not
-// delay at all between successful calls, but backs off in the default fashion in response
-// to any errors.
-// The assumption is that errors should be exceedingly rare (S3 seems to have largely solved
-//  the sort of scability questions rclone is likely to run into), and in the happy case
-//  it can handle calls with no delays between them.
-//
-// Basically defaultPacer, but with some handling of sleepTime going to/from 0ms
-// Ignores minSleep entirely
-//
-// Call with p.mu held
-func (p *Pacer) s3Pacer(retry bool) {
-	oldSleepTime := p.sleepTime
-	if retry {
-		if p.attackConstant == 0 {
-			p.sleepTime = p.maxSleep
-		} else {
-			if p.sleepTime == 0 {
-				p.sleepTime = p.minSleep
-			} else {
-				p.sleepTime = (p.sleepTime << p.attackConstant) / ((1 << p.attackConstant) - 1)
-			}
-		}
-		if p.sleepTime > p.maxSleep {
-			p.sleepTime = p.maxSleep
-		}
-		if p.sleepTime != oldSleepTime {
-			fs.Debugf("pacer", "Rate limited, increasing sleep to %v", p.sleepTime)
-		}
-	} else {
-		p.sleepTime = (p.sleepTime<<p.decayConstant - p.sleepTime) >> p.decayConstant
-		if p.sleepTime < p.minSleep {
-			p.sleepTime = 0
-		}
-		if p.sleepTime != oldSleepTime {
-			fs.Debugf("pacer", "Reducing sleep to %v", p.sleepTime)
-		}
-	}
-}
-
 // endCall implements the pacing algorithm
 //
 // This should calculate a new sleepTime.  It takes a boolean as to
 // whether the operation should be retried or not.
-func (p *Pacer) endCall(retry bool) {
+func (p *Pacer) endCall(retry bool, err error) {
 	if p.maxConnections > 0 {
 		p.connTokens <- struct{}{}
 	}
 	p.mu.Lock()
 	if retry {
-		p.consecutiveRetries++
+		p.state.ConsecutiveRetries++
 	} else {
-		p.consecutiveRetries = 0
+		p.state.ConsecutiveRetries = 0
 	}
-	p.calculatePace(retry)
+	p.state.LastError = err
+	p.state.SleepTime = p.calculator.Calculate(p.state)
 	p.mu.Unlock()
 }
 
@@ -402,15 +194,11 @@ func (p *Pacer) call(fn Paced, retries int) (err error) {
 	var retry bool
 	for i := 1; i <= retries; i++ {
 		p.beginCall()
-		retry, err = fn()
-		p.endCall(retry)
+		retry, err = p.invoker(i, retries, fn)
+		p.endCall(retry, err)
 		if !retry {
 			break
 		}
-		fs.Debugf("pacer", "low level retry %d/%d (error %v)", i, retries, err)
-	}
-	if retry {
-		err = fserrors.RetryError(err)
 	}
 	return err
 }
@@ -436,3 +224,41 @@ func (p *Pacer) Call(fn Paced) (err error) {
 func (p *Pacer) CallNoRetry(fn Paced) error {
 	return p.call(fn, 1)
 }
+
+func invoke(try, tries int, f Paced) (bool, error) {
+	return f()
+}
+
+type retryAfterError struct {
+	error
+	retryAfter time.Duration
+}
+
+func (r *retryAfterError) Error() string {
+	return r.error.Error()
+}
+
+func (r *retryAfterError) Cause() error {
+	return r.error
+}
+
+// RetryAfterError returns a wrapped error that can be used by Calculator implementations
+func RetryAfterError(err error, retryAfter time.Duration) error {
+	return &retryAfterError{
+		error:      err,
+		retryAfter: retryAfter,
+	}
+}
+
+// IsRetryAfter returns true if the the error or any of it's Cause's is an error
+// returned by RetryAfterError. It also returns the associated Duration if possible.
+func IsRetryAfter(err error) (retryAfter time.Duration, isRetryAfter bool) {
+	errors.Walk(err, func(err error) bool {
+		if r, ok := err.(*retryAfterError); ok {
+			retryAfter, isRetryAfter = r.retryAfter, true
+			return true
+		}
+		return false
+	})
+	return
+}

lib/pacer/pacer_test.go

@@ -1,181 +1,85 @@
 package pacer
 
 import (
-	"fmt"
+	"sync"
 	"testing"
 	"time"
 
-	"github.com/ncw/rclone/fs"
-	"github.com/ncw/rclone/fs/fserrors"
 	"github.com/pkg/errors"
+	"github.com/stretchr/testify/assert"
 )
 
 func TestNew(t *testing.T) {
 	const expectedRetries = 7
-	fs.Config.LowLevelRetries = expectedRetries
-	p := New()
-	if p.minSleep != 10*time.Millisecond {
-		t.Errorf("minSleep")
-	}
-	if p.maxSleep != 2*time.Second {
-		t.Errorf("maxSleep")
-	}
-	if p.sleepTime != p.minSleep {
-		t.Errorf("sleepTime")
-	}
-	if p.retries != expectedRetries {
-		t.Errorf("retries want %v got %v", expectedRetries, p.retries)
-	}
-	if p.decayConstant != 2 {
-		t.Errorf("decayConstant")
-	}
-	if p.attackConstant != 1 {
-		t.Errorf("attackConstant")
-	}
-	if cap(p.pacer) != 1 {
-		t.Errorf("pacer 1")
-	}
-	if len(p.pacer) != 1 {
-		t.Errorf("pacer 2")
-	}
-	if fmt.Sprintf("%p", p.calculatePace) != fmt.Sprintf("%p", p.defaultPacer) {
-		t.Errorf("calculatePace")
-	}
-	if p.maxConnections != fs.Config.Checkers+fs.Config.Transfers {
-		t.Errorf("maxConnections")
-	}
-	if cap(p.connTokens) != fs.Config.Checkers+fs.Config.Transfers {
-		t.Errorf("connTokens")
-	}
-	if p.consecutiveRetries != 0 {
-		t.Errorf("consecutiveRetries")
-	}
-}
-
-func TestSetSleep(t *testing.T) {
-	p := New().SetSleep(2 * time.Millisecond)
-	if p.sleepTime != 2*time.Millisecond {
-		t.Errorf("didn't set")
-	}
-}
-
-func TestGetSleep(t *testing.T) {
-	p := New().SetSleep(2 * time.Millisecond)
-	if p.GetSleep() != 2*time.Millisecond {
-		t.Errorf("didn't get")
-	}
-}
-
-func TestSetMinSleep(t *testing.T) {
-	p := New().SetMinSleep(1 * time.Millisecond)
-	if p.minSleep != 1*time.Millisecond {
-		t.Errorf("didn't set")
-	}
-}
-
-func TestSetMaxSleep(t *testing.T) {
-	p := New().SetMaxSleep(100 * time.Second)
-	if p.maxSleep != 100*time.Second {
-		t.Errorf("didn't set")
+	const expectedConnections = 9
+	p := New(RetriesOption(expectedRetries), MaxConnectionsOption(expectedConnections))
+	if d, ok := p.calculator.(*Default); ok {
+		assert.Equal(t, 10*time.Millisecond, d.minSleep)
+		assert.Equal(t, 2*time.Second, d.maxSleep)
+		assert.Equal(t, d.minSleep, p.state.SleepTime)
+		assert.Equal(t, uint(2), d.decayConstant)
+		assert.Equal(t, uint(1), d.attackConstant)
+	} else {
+		t.Errorf("calculator")
 	}
+	assert.Equal(t, expectedRetries, p.retries)
+	assert.Equal(t, 1, cap(p.pacer))
+	assert.Equal(t, 1, len(p.pacer))
+	assert.Equal(t, expectedConnections, p.maxConnections)
+	assert.Equal(t, expectedConnections, cap(p.connTokens))
+	assert.Equal(t, 0, p.state.ConsecutiveRetries)
 }
 
 func TestMaxConnections(t *testing.T) {
-	p := New().SetMaxConnections(20)
-	if p.maxConnections != 20 {
-		t.Errorf("maxConnections")
-	}
-	if cap(p.connTokens) != 20 {
-		t.Errorf("connTokens")
-	}
+	p := New()
+	p.SetMaxConnections(20)
+	assert.Equal(t, 20, p.maxConnections)
+	assert.Equal(t, 20, cap(p.connTokens))
 	p.SetMaxConnections(0)
-	if p.maxConnections != 0 {
-		t.Errorf("maxConnections is not 0")
-	}
-	if p.connTokens != nil {
-		t.Errorf("connTokens is not nil")
-	}
-}
-
-func TestSetDecayConstant(t *testing.T) {
-	p := New().SetDecayConstant(17)
-	if p.decayConstant != 17 {
-		t.Errorf("didn't set")
-	}
+	assert.Equal(t, 0, p.maxConnections)
+	assert.Nil(t, p.connTokens)
 }
 
 func TestDecay(t *testing.T) {
-	p := New().SetMinSleep(time.Microsecond).SetPacer(DefaultPacer).SetMaxSleep(time.Second)
+	c := NewDefault(MinSleep(1*time.Microsecond), MaxSleep(1*time.Second))
 	for _, test := range []struct {
-		in             time.Duration
+		in             State
 		attackConstant uint
 		want           time.Duration
 	}{
-		{8 * time.Millisecond, 1, 4 * time.Millisecond},
-		{1 * time.Millisecond, 0, time.Microsecond},
-		{1 * time.Millisecond, 2, (3 * time.Millisecond) / 4},
-		{1 * time.Millisecond, 3, (7 * time.Millisecond) / 8},
+		{State{SleepTime: 8 * time.Millisecond}, 1, 4 * time.Millisecond},
+		{State{SleepTime: 1 * time.Millisecond}, 0, 1 * time.Microsecond},
+		{State{SleepTime: 1 * time.Millisecond}, 2, (3 * time.Millisecond) / 4},
+		{State{SleepTime: 1 * time.Millisecond}, 3, (7 * time.Millisecond) / 8},
 	} {
-		p.sleepTime = test.in
-		p.SetDecayConstant(test.attackConstant)
-		p.defaultPacer(false)
-		got := p.sleepTime
-		if got != test.want {
-			t.Errorf("bad sleep want %v got %v", test.want, got)
-		}
-	}
-}
-
-func TestSetAttackConstant(t *testing.T) {
-	p := New().SetAttackConstant(19)
-	if p.attackConstant != 19 {
-		t.Errorf("didn't set")
+		c.decayConstant = test.attackConstant
+		got := c.Calculate(test.in)
+		assert.Equal(t, test.want, got, "test: %+v", test)
 	}
 }
 
 func TestAttack(t *testing.T) {
-	p := New().SetMinSleep(time.Microsecond).SetPacer(DefaultPacer).SetMaxSleep(time.Second)
+	c := NewDefault(MinSleep(1*time.Microsecond), MaxSleep(1*time.Second))
 	for _, test := range []struct {
-		in             time.Duration
+		in             State
 		attackConstant uint
 		want           time.Duration
 	}{
-		{1 * time.Millisecond, 1, 2 * time.Millisecond},
-		{1 * time.Millisecond, 0, time.Second},
-		{1 * time.Millisecond, 2, (4 * time.Millisecond) / 3},
-		{1 * time.Millisecond, 3, (8 * time.Millisecond) / 7},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 1}, 1, 2 * time.Millisecond},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 1}, 0, 1 * time.Second},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 1}, 2, (4 * time.Millisecond) / 3},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 1}, 3, (8 * time.Millisecond) / 7},
 	} {
-		p.sleepTime = test.in
-		p.SetAttackConstant(test.attackConstant)
-		p.defaultPacer(true)
-		got := p.sleepTime
-		if got != test.want {
-			t.Errorf("bad sleep want %v got %v", test.want, got)
-		}
+		c.attackConstant = test.attackConstant
+		got := c.Calculate(test.in)
+		assert.Equal(t, test.want, got, "test: %+v", test)
 	}
-
 }
 
 func TestSetRetries(t *testing.T) {
-	p := New().SetRetries(18)
-	if p.retries != 18 {
-		t.Errorf("didn't set")
-	}
-}
-
-func TestSetPacer(t *testing.T) {
-	p := New().SetPacer(AmazonCloudDrivePacer)
-	if fmt.Sprintf("%p", p.calculatePace) != fmt.Sprintf("%p", p.acdPacer) {
-		t.Errorf("calculatePace is not acdPacer")
-	}
-	p.SetPacer(GoogleDrivePacer)
-	if fmt.Sprintf("%p", p.calculatePace) != fmt.Sprintf("%p", p.drivePacer) {
-		t.Errorf("calculatePace is not drivePacer")
-	}
-	p.SetPacer(DefaultPacer)
-	if fmt.Sprintf("%p", p.calculatePace) != fmt.Sprintf("%p", p.defaultPacer) {
-		t.Errorf("calculatePace is not defaultPacer")
-	}
+	p := New()
+	p.SetRetries(18)
+	assert.Equal(t, 18, p.retries)
 }
 
 // emptyTokens empties the pacer of all its tokens
@@ -200,7 +104,7 @@ func waitForPace(p *Pacer, duration time.Duration) (when time.Time) {
 }
 
 func TestBeginCall(t *testing.T) {
-	p := New().SetMaxConnections(10).SetMinSleep(1 * time.Millisecond)
+	p := New(MaxConnectionsOption(10), CalculatorOption(NewDefault(MinSleep(1*time.Millisecond))))
 	emptyTokens(p)
 	go p.beginCall()
 	if !waitForPace(p, 10*time.Millisecond).IsZero() {
@@ -223,7 +127,7 @@ func TestBeginCall(t *testing.T) {
 }
 
 func TestBeginCallZeroConnections(t *testing.T) {
-	p := New().SetMaxConnections(0).SetMinSleep(1 * time.Millisecond)
+	p := New(MaxConnectionsOption(0), CalculatorOption(NewDefault(MinSleep(1*time.Millisecond))))
 	emptyTokens(p)
 	go p.beginCall()
 	if !waitForPace(p, 10*time.Millisecond).IsZero() {
@@ -241,155 +145,143 @@ func TestBeginCallZeroConnections(t *testing.T) {
 }
 
 func TestDefaultPacer(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetPacer(DefaultPacer).SetMaxSleep(time.Second).SetDecayConstant(2)
+	c := NewDefault(MinSleep(1*time.Millisecond), MaxSleep(1*time.Second), DecayConstant(2))
 	for _, test := range []struct {
-		in    time.Duration
-		retry bool
+		state State
 		want  time.Duration
 	}{
-		{time.Millisecond, true, 2 * time.Millisecond},
-		{time.Second, true, time.Second},
-		{(3 * time.Second) / 4, true, time.Second},
-		{time.Second, false, 750 * time.Millisecond},
-		{1000 * time.Microsecond, false, time.Millisecond},
-		{1200 * time.Microsecond, false, time.Millisecond},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 1}, 2 * time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 1}, 1 * time.Second},
+		{State{SleepTime: (3 * time.Second) / 4, ConsecutiveRetries: 1}, 1 * time.Second},
+		{State{SleepTime: 1 * time.Second}, 750 * time.Millisecond},
+		{State{SleepTime: 1000 * time.Microsecond}, 1 * time.Millisecond},
+		{State{SleepTime: 1200 * time.Microsecond}, 1 * time.Millisecond},
 	} {
-		p.sleepTime = test.in
-		p.defaultPacer(test.retry)
-		got := p.sleepTime
-		if got != test.want {
-			t.Errorf("bad sleep want %v got %v", test.want, got)
-		}
+		got := c.Calculate(test.state)
+		assert.Equal(t, test.want, got, "test: %+v", test)
 	}
 
 }
 
 func TestAmazonCloudDrivePacer(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetPacer(AmazonCloudDrivePacer).SetMaxSleep(time.Second).SetDecayConstant(2)
+	c := NewAmazonCloudDrive(MinSleep(1 * time.Millisecond))
 	// Do lots of times because of the random number!
 	for _, test := range []struct {
-		in                 time.Duration
-		consecutiveRetries int
-		retry              bool
-		want               time.Duration
+		state State
+		want  time.Duration
 	}{
-		{time.Millisecond, 0, true, time.Millisecond},
-		{10 * time.Millisecond, 0, true, time.Millisecond},
-		{1 * time.Second, 1, true, 500 * time.Millisecond},
-		{1 * time.Second, 2, true, 1 * time.Second},
-		{1 * time.Second, 3, true, 2 * time.Second},
-		{1 * time.Second, 4, true, 4 * time.Second},
-		{1 * time.Second, 5, true, 8 * time.Second},
-		{1 * time.Second, 6, true, 16 * time.Second},
-		{1 * time.Second, 7, true, 32 * time.Second},
-		{1 * time.Second, 8, true, 64 * time.Second},
-		{1 * time.Second, 9, true, 128 * time.Second},
-		{1 * time.Second, 10, true, 128 * time.Second},
-		{1 * time.Second, 11, true, 128 * time.Second},
+		{State{SleepTime: 1 * time.Millisecond, ConsecutiveRetries: 0}, 1 * time.Millisecond},
+		{State{SleepTime: 10 * time.Millisecond, ConsecutiveRetries: 0}, 1 * time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 1}, 500 * time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 2}, 1 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 3}, 2 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 4}, 4 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 5}, 8 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 6}, 16 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 7}, 32 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 8}, 64 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 9}, 128 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 10}, 128 * time.Second},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 11}, 128 * time.Second},
 	} {
 		const n = 1000
 		var sum time.Duration
 		// measure average time over n cycles
 		for i := 0; i < n; i++ {
-			p.sleepTime = test.in
-			p.consecutiveRetries = test.consecutiveRetries
-			p.acdPacer(test.retry)
-			sum += p.sleepTime
+			sum += c.Calculate(test.state)
 		}
 		got := sum / n
-		//t.Logf("%+v: got = %v", test, got)
-		if got < (test.want*9)/10 || got > (test.want*11)/10 {
-			t.Fatalf("%+v: bad sleep want %v+/-10%% got %v", test, test.want, got)
-		}
+		assert.False(t, got < (test.want*9)/10 || got > (test.want*11)/10, "test: %+v", test)
 	}
 }
 
 func TestGoogleDrivePacer(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetPacer(GoogleDrivePacer).SetMaxSleep(time.Second).SetDecayConstant(2)
 	// Do lots of times because of the random number!
 	for _, test := range []struct {
-		in                 time.Duration
-		consecutiveRetries int
-		retry              bool
-		want               time.Duration
+		state State
+		want  time.Duration
 	}{
-		{time.Millisecond, 0, true, time.Millisecond},
-		{10 * time.Millisecond, 0, true, time.Millisecond},
-		{1 * time.Second, 1, true, 1*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 2, true, 2*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 3, true, 4*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 4, true, 8*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 5, true, 16*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 6, true, 16*time.Second + 500*time.Millisecond},
-		{1 * time.Second, 7, true, 16*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Millisecond}, 0},
+		{State{SleepTime: 10 * time.Millisecond}, 0},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 1}, 1*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 2}, 2*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 3}, 4*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 4}, 8*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 5}, 16*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 6}, 16*time.Second + 500*time.Millisecond},
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 7}, 16*time.Second + 500*time.Millisecond},
 	} {
 		const n = 1000
 		var sum time.Duration
 		// measure average time over n cycles
 		for i := 0; i < n; i++ {
-			p.sleepTime = test.in
-			p.consecutiveRetries = test.consecutiveRetries
-			p.drivePacer(test.retry)
-			sum += p.sleepTime
+			c := NewGoogleDrive(MinSleep(1 * time.Millisecond))
+			sum += c.Calculate(test.state)
 		}
 		got := sum / n
-		//t.Logf("%+v: got = %v", test, got)
-		if got < (test.want*9)/10 || got > (test.want*11)/10 {
-			t.Fatalf("%+v: bad sleep want %v+/-10%% got %v", test, test.want, got)
+		assert.False(t, got < (test.want*9)/10 || got > (test.want*11)/10, "test: %+v, got: %v", test, got)
+	}
+
+	const minSleep = 2 * time.Millisecond
+	for _, test := range []struct {
+		calls int
+		want  int
+	}{
+		{1, 0},
+		{9, 0},
+		{10, 0},
+		{11, 1},
+		{12, 2},
+	} {
+		c := NewGoogleDrive(MinSleep(minSleep), Burst(10))
+		count := 0
+		for i := 0; i < test.calls; i++ {
+			sleep := c.Calculate(State{})
+			if sleep != 0 {
+				count++
+			}
 		}
+		assert.Equalf(t, test.want, count, "test: %+v, got: %v", test, count)
 	}
 }
 
 func TestS3Pacer(t *testing.T) {
-	p := New().SetMinSleep(10 * time.Millisecond).SetPacer(S3Pacer).SetMaxSleep(time.Second).SetDecayConstant(2)
+	c := NewS3(MinSleep(10*time.Millisecond), MaxSleep(1*time.Second), DecayConstant(2))
 	for _, test := range []struct {
-		in    time.Duration
-		retry bool
+		state State
 		want  time.Duration
 	}{
-		{0, true, 10 * time.Millisecond},                      //Things were going ok, we failed once, back off to minSleep
-		{10 * time.Millisecond, true, 20 * time.Millisecond},  //Another fail, double the backoff
-		{10 * time.Millisecond, false, 0},                     //Things start going ok when we're at minSleep; should result in no sleep
-		{12 * time.Millisecond, false, 0},                     //*near* minsleep and going ok, decay would take below minSleep, should go to 0
-		{0, false, 0},                                         //Things have been going ok; not retrying should keep sleep at 0
-		{time.Second, true, time.Second},                      //Check maxSleep is enforced
-		{(3 * time.Second) / 4, true, time.Second},            //Check attack heading to maxSleep doesn't exceed maxSleep
-		{time.Second, false, 750 * time.Millisecond},          //Check decay from maxSleep
-		{48 * time.Millisecond, false, 36 * time.Millisecond}, //Check simple decay above minSleep
+		{State{SleepTime: 0, ConsecutiveRetries: 1}, 10 * time.Millisecond},                     //Things were going ok, we failed once, back off to minSleep
+		{State{SleepTime: 10 * time.Millisecond, ConsecutiveRetries: 1}, 20 * time.Millisecond}, //Another fail, double the backoff
+		{State{SleepTime: 10 * time.Millisecond}, 0},                                            //Things start going ok when we're at minSleep; should result in no sleep
+		{State{SleepTime: 12 * time.Millisecond}, 0},                                            //*near* minsleep and going ok, decay would take below minSleep, should go to 0
+		{State{SleepTime: 0}, 0},                                                                //Things have been going ok; not retrying should keep sleep at 0
+		{State{SleepTime: 1 * time.Second, ConsecutiveRetries: 1}, 1 * time.Second},             //Check maxSleep is enforced
+		{State{SleepTime: (3 * time.Second) / 4, ConsecutiveRetries: 1}, 1 * time.Second},       //Check attack heading to maxSleep doesn't exceed maxSleep
+		{State{SleepTime: 1 * time.Second}, 750 * time.Millisecond},                             //Check decay from maxSleep
+		{State{SleepTime: 48 * time.Millisecond}, 36 * time.Millisecond},                        //Check simple decay above minSleep
 	} {
-		p.sleepTime = test.in
-		p.s3Pacer(test.retry)
-		got := p.sleepTime
-		if got != test.want {
-			t.Errorf("bad sleep for %v with retry %v:  want %v got %v", test.in, test.retry, test.want, got)
-		}
+		got := c.Calculate(test.state)
+		assert.Equal(t, test.want, got, "test: %+v", test)
 	}
 }
 
 func TestEndCall(t *testing.T) {
-	p := New().SetMaxConnections(5)
+	p := New(MaxConnectionsOption(5))
 	emptyTokens(p)
-	p.consecutiveRetries = 1
-	p.endCall(true)
-	if len(p.connTokens) != 1 {
-		t.Errorf("Expecting 1 token")
-	}
-	if p.consecutiveRetries != 2 {
-		t.Errorf("Bad consecutive retries")
-	}
+	p.state.ConsecutiveRetries = 1
+	p.endCall(true, nil)
+	assert.Equal(t, 1, len(p.connTokens))
+	assert.Equal(t, 2, p.state.ConsecutiveRetries)
 }
 
 func TestEndCallZeroConnections(t *testing.T) {
-	p := New().SetMaxConnections(0)
+	p := New(MaxConnectionsOption(0))
 	emptyTokens(p)
-	p.consecutiveRetries = 1
-	p.endCall(false)
-	if len(p.connTokens) != 0 {
-		t.Errorf("Expecting 0 token")
-	}
-	if p.consecutiveRetries != 0 {
-		t.Errorf("Bad consecutive retries")
-	}
+	p.state.ConsecutiveRetries = 1
+	p.endCall(false, nil)
+	assert.Equal(t, 0, len(p.connTokens))
+	assert.Equal(t, 0, p.state.ConsecutiveRetries)
 }
 
 var errFoo = errors.New("foo")
@@ -397,67 +289,79 @@ var errFoo = errors.New("foo")
 type dummyPaced struct {
 	retry  bool
 	called int
+	wait   *sync.Cond
 }
 
 func (dp *dummyPaced) fn() (bool, error) {
-	dp.called++
+	if dp.wait != nil {
+		dp.wait.L.Lock()
+		dp.called++
+		dp.wait.Wait()
+		dp.wait.L.Unlock()
+	} else {
+		dp.called++
+	}
 	return dp.retry, errFoo
 }
 
-func Test_callNoRetry(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetMaxSleep(2 * time.Millisecond)
+func TestCallFixed(t *testing.T) {
+	p := New(CalculatorOption(NewDefault(MinSleep(1*time.Millisecond), MaxSleep(2*time.Millisecond))))
 
 	dp := &dummyPaced{retry: false}
 	err := p.call(dp.fn, 10)
-	if dp.called != 1 {
-		t.Errorf("called want %d got %d", 1, dp.called)
-	}
-	if err != errFoo {
-		t.Errorf("err want %v got %v", errFoo, err)
-	}
+	assert.Equal(t, 1, dp.called)
+	assert.Equal(t, errFoo, err)
 }
 
 func Test_callRetry(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetMaxSleep(2 * time.Millisecond)
+	p := New(CalculatorOption(NewDefault(MinSleep(1*time.Millisecond), MaxSleep(2*time.Millisecond))))
 
 	dp := &dummyPaced{retry: true}
 	err := p.call(dp.fn, 10)
-	if dp.called != 10 {
-		t.Errorf("called want %d got %d", 10, dp.called)
-	}
-	if err == errFoo {
-		t.Errorf("err didn't want %v got %v", errFoo, err)
-	}
-	_, ok := err.(fserrors.Retrier)
-	if !ok {
-		t.Errorf("didn't return a retry error")
-	}
+	assert.Equal(t, 10, dp.called)
+	assert.Equal(t, errFoo, err)
 }
 
 func TestCall(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetMaxSleep(2 * time.Millisecond).SetRetries(20)
+	p := New(RetriesOption(20), CalculatorOption(NewDefault(MinSleep(1*time.Millisecond), MaxSleep(2*time.Millisecond))))
 
 	dp := &dummyPaced{retry: true}
 	err := p.Call(dp.fn)
-	if dp.called != 20 {
-		t.Errorf("called want %d got %d", 20, dp.called)
-	}
-	_, ok := err.(fserrors.Retrier)
-	if !ok {
-		t.Errorf("didn't return a retry error")
-	}
+	assert.Equal(t, 20, dp.called)
+	assert.Equal(t, errFoo, err)
 }
 
-func TestCallNoRetry(t *testing.T) {
-	p := New().SetMinSleep(time.Millisecond).SetMaxSleep(2 * time.Millisecond).SetRetries(20)
+func TestCallParallel(t *testing.T) {
+	p := New(MaxConnectionsOption(3), RetriesOption(1), CalculatorOption(NewDefault(MinSleep(100*time.Microsecond), MaxSleep(1*time.Millisecond))))
 
-	dp := &dummyPaced{retry: true}
-	err := p.CallNoRetry(dp.fn)
-	if dp.called != 1 {
-		t.Errorf("called want %d got %d", 1, dp.called)
+	wait := sync.NewCond(&sync.Mutex{})
+	funcs := make([]*dummyPaced, 5)
+	for i := range funcs {
+		dp := &dummyPaced{wait: wait}
+		funcs[i] = dp
+		go func() {
+			assert.Equal(t, errFoo, p.CallNoRetry(dp.fn))
+		}()
 	}
-	_, ok := err.(fserrors.Retrier)
-	if !ok {
-		t.Errorf("didn't return a retry error")
+	time.Sleep(10 * time.Millisecond)
+	called := 0
+	wait.L.Lock()
+	for _, dp := range funcs {
+		called += dp.called
 	}
+	wait.L.Unlock()
+
+	assert.Equal(t, 3, called)
+	wait.Broadcast()
+	time.Sleep(20 * time.Millisecond)
+
+	called = 0
+	wait.L.Lock()
+	for _, dp := range funcs {
+		called += dp.called
+	}
+	wait.L.Unlock()
+
+	assert.Equal(t, 5, called)
+	wait.Broadcast()
 }

lib/pacer/pacers.go

@@ -0,0 +1,326 @@
+package pacer
+
+import (
+	"math/rand"
+	"time"
+
+	"golang.org/x/time/rate"
+)
+
+type (
+	// MinSleep configures the minimum sleep time of a Calculator
+	MinSleep time.Duration
+	// MaxSleep configures the maximum sleep time of a Calculator
+	MaxSleep time.Duration
+	// DecayConstant configures the decay constant time of a Calculator
+	DecayConstant uint
+	// AttackConstant configures the attack constant of a Calculator
+	AttackConstant uint
+	// Burst configures the number of API calls to allow without sleeping
+	Burst int
+)
+
+// Default is a truncated exponential attack and decay.
+//
+// On retries the sleep time is doubled, on non errors then sleeptime decays
+// according to the decay constant as set with SetDecayConstant.
+//
+// The sleep never goes below that set with SetMinSleep or above that set
+// with SetMaxSleep.
+type Default struct {
+	minSleep       time.Duration // minimum sleep time
+	maxSleep       time.Duration // maximum sleep time
+	decayConstant  uint          // decay constant
+	attackConstant uint          // attack constant
+}
+
+// DefaultOption is the interface implemented by all options for the Default Calculator
+type DefaultOption interface {
+	ApplyDefault(*Default)
+}
+
+// NewDefault creates a Calculator used by Pacer as the default.
+func NewDefault(opts ...DefaultOption) *Default {
+	c := &Default{
+		minSleep:       10 * time.Millisecond,
+		maxSleep:       2 * time.Second,
+		decayConstant:  2,
+		attackConstant: 1,
+	}
+	c.Update(opts...)
+	return c
+}
+
+// Update applies the Calculator options.
+func (c *Default) Update(opts ...DefaultOption) {
+	for _, opt := range opts {
+		opt.ApplyDefault(c)
+	}
+}
+
+// ApplyDefault updates the value on the Calculator
+func (o MinSleep) ApplyDefault(c *Default) {
+	c.minSleep = time.Duration(o)
+}
+
+// ApplyDefault updates the value on the Calculator
+func (o MaxSleep) ApplyDefault(c *Default) {
+	c.maxSleep = time.Duration(o)
+}
+
+// ApplyDefault updates the value on the Calculator
+func (o DecayConstant) ApplyDefault(c *Default) {
+	c.decayConstant = uint(o)
+}
+
+// ApplyDefault updates the value on the Calculator
+func (o AttackConstant) ApplyDefault(c *Default) {
+	c.attackConstant = uint(o)
+}
+
+// Calculate takes the current Pacer state and return the wait time until the next try.
+func (c *Default) Calculate(state State) time.Duration {
+	if t, ok := IsRetryAfter(state.LastError); ok {
+		if t < c.minSleep {
+			return c.minSleep
+		}
+		return t
+	}
+
+	if state.ConsecutiveRetries > 0 {
+		sleepTime := c.maxSleep
+		if c.attackConstant != 0 {
+			sleepTime = (state.SleepTime << c.attackConstant) / ((1 << c.attackConstant) - 1)
+		}
+		if sleepTime > c.maxSleep {
+			sleepTime = c.maxSleep
+		}
+		return sleepTime
+	}
+	sleepTime := (state.SleepTime<<c.decayConstant - state.SleepTime) >> c.decayConstant
+	if sleepTime < c.minSleep {
+		sleepTime = c.minSleep
+	}
+	return sleepTime
+}
+
+// AmazonCloudDrive is a specialized pacer for Amazon Drive
+//
+// It implements a truncated exponential backoff strategy with randomization.
+// Normally operations are paced at the interval set with SetMinSleep. On errors
+// the sleep timer is set to 0..2**retries seconds.
+//
+// See https://developer.amazon.com/public/apis/experience/cloud-drive/content/restful-api-best-practices
+type AmazonCloudDrive struct {
+	minSleep time.Duration // minimum sleep time
+}
+
+// AmazonCloudDriveOption is the interface implemented by all options for the AmazonCloudDrive Calculator
+type AmazonCloudDriveOption interface {
+	ApplyAmazonCloudDrive(*AmazonCloudDrive)
+}
+
+// NewAmazonCloudDrive returns a new AmazonCloudDrive Calculator with default values
+func NewAmazonCloudDrive(opts ...AmazonCloudDriveOption) *AmazonCloudDrive {
+	c := &AmazonCloudDrive{
+		minSleep: 10 * time.Millisecond,
+	}
+	c.Update(opts...)
+	return c
+}
+
+// Update applies the Calculator options.
+func (c *AmazonCloudDrive) Update(opts ...AmazonCloudDriveOption) {
+	for _, opt := range opts {
+		opt.ApplyAmazonCloudDrive(c)
+	}
+}
+
+// ApplyAmazonCloudDrive updates the value on the Calculator
+func (o MinSleep) ApplyAmazonCloudDrive(c *AmazonCloudDrive) {
+	c.minSleep = time.Duration(o)
+}
+
+// Calculate takes the current Pacer state and return the wait time until the next try.
+func (c *AmazonCloudDrive) Calculate(state State) time.Duration {
+	if t, ok := IsRetryAfter(state.LastError); ok {
+		if t < c.minSleep {
+			return c.minSleep
+		}
+		return t
+	}
+
+	consecutiveRetries := state.ConsecutiveRetries
+	if consecutiveRetries == 0 {
+		return c.minSleep
+	}
+	if consecutiveRetries > 9 {
+		consecutiveRetries = 9
+	}
+	// consecutiveRetries starts at 1 so
+	// maxSleep is 2**(consecutiveRetries-1) seconds
+	maxSleep := time.Second << uint(consecutiveRetries-1)
+	// actual sleep is random from 0..maxSleep
+	sleepTime := time.Duration(rand.Int63n(int64(maxSleep)))
+	if sleepTime < c.minSleep {
+		sleepTime = c.minSleep
+	}
+	return sleepTime
+}
+
+// GoogleDrive is a specialized pacer for Google Drive
+//
+// It implements a truncated exponential backoff strategy with randomization.
+// Normally operations are paced at the interval set with SetMinSleep. On errors
+// the sleep timer is set to (2 ^ n) + random_number_milliseconds seconds.
+//
+// See https://developers.google.com/drive/v2/web/handle-errors#exponential-backoff
+type GoogleDrive struct {
+	minSleep time.Duration // minimum sleep time
+	burst    int           // number of requests without sleeping
+	limiter  *rate.Limiter // rate limiter for the minSleep
+}
+
+// GoogleDriveOption is the interface implemented by all options for the GoogleDrive Calculator
+type GoogleDriveOption interface {
+	ApplyGoogleDrive(*GoogleDrive)
+}
+
+// NewGoogleDrive returns a new GoogleDrive Calculator with default values
+func NewGoogleDrive(opts ...GoogleDriveOption) *GoogleDrive {
+	c := &GoogleDrive{
+		minSleep: 10 * time.Millisecond,
+		burst:    1,
+	}
+	c.Update(opts...)
+	return c
+}
+
+// Update applies the Calculator options.
+func (c *GoogleDrive) Update(opts ...GoogleDriveOption) {
+	for _, opt := range opts {
+		opt.ApplyGoogleDrive(c)
+	}
+	if c.burst <= 0 {
+		c.burst = 1
+	}
+	c.limiter = rate.NewLimiter(rate.Every(c.minSleep), c.burst)
+}
+
+// ApplyGoogleDrive updates the value on the Calculator
+func (o MinSleep) ApplyGoogleDrive(c *GoogleDrive) {
+	c.minSleep = time.Duration(o)
+}
+
+// ApplyGoogleDrive updates the value on the Calculator
+func (o Burst) ApplyGoogleDrive(c *GoogleDrive) {
+	c.burst = int(o)
+}
+
+// Calculate takes the current Pacer state and return the wait time until the next try.
+func (c *GoogleDrive) Calculate(state State) time.Duration {
+	if t, ok := IsRetryAfter(state.LastError); ok {
+		if t < c.minSleep {
+			return c.minSleep
+		}
+		return t
+	}
+
+	consecutiveRetries := state.ConsecutiveRetries
+	if consecutiveRetries == 0 {
+		return c.limiter.Reserve().Delay()
+	}
+	if consecutiveRetries > 5 {
+		consecutiveRetries = 5
+	}
+	// consecutiveRetries starts at 1 so go from 1,2,3,4,5,5 => 1,2,4,8,16,16
+	// maxSleep is 2**(consecutiveRetries-1) seconds + random milliseconds
+	return time.Second<<uint(consecutiveRetries-1) + time.Duration(rand.Int63n(int64(time.Second)))
+}
+
+// S3 implements a pacer compatible with our expectations of S3, where it tries to not
+// delay at all between successful calls, but backs off in the default fashion in response
+// to any errors.
+// The assumption is that errors should be exceedingly rare (S3 seems to have largely solved
+// the sort of stability questions rclone is likely to run into), and in the happy case
+// it can handle calls with no delays between them.
+//
+// Basically defaultPacer, but with some handling of sleepTime going to/from 0ms
+type S3 struct {
+	minSleep       time.Duration // minimum sleep time
+	maxSleep       time.Duration // maximum sleep time
+	decayConstant  uint          // decay constant
+	attackConstant uint          // attack constant
+}
+
+// S3Option is the interface implemented by all options for the S3 Calculator
+type S3Option interface {
+	ApplyS3(*S3)
+}
+
+// NewS3 returns a new S3 Calculator with default values
+func NewS3(opts ...S3Option) *S3 {
+	c := &S3{
+		maxSleep:       2 * time.Second,
+		decayConstant:  2,
+		attackConstant: 1,
+	}
+	c.Update(opts...)
+	return c
+}
+
+// Update applies the Calculator options.
+func (c *S3) Update(opts ...S3Option) {
+	for _, opt := range opts {
+		opt.ApplyS3(c)
+	}
+}
+
+// ApplyS3 updates the value on the Calculator
+func (o MaxSleep) ApplyS3(c *S3) {
+	c.maxSleep = time.Duration(o)
+}
+
+// ApplyS3 updates the value on the Calculator
+func (o MinSleep) ApplyS3(c *S3) {
+	c.minSleep = time.Duration(o)
+}
+
+// ApplyS3 updates the value on the Calculator
+func (o DecayConstant) ApplyS3(c *S3) {
+	c.decayConstant = uint(o)
+}
+
+// ApplyS3 updates the value on the Calculator
+func (o AttackConstant) ApplyS3(c *S3) {
+	c.attackConstant = uint(o)
+}
+
+// Calculate takes the current Pacer state and return the wait time until the next try.
+func (c *S3) Calculate(state State) time.Duration {
+	if t, ok := IsRetryAfter(state.LastError); ok {
+		if t < c.minSleep {
+			return c.minSleep
+		}
+		return t
+	}
+
+	if state.ConsecutiveRetries > 0 {
+		if c.attackConstant == 0 {
+			return c.maxSleep
+		}
+		if state.SleepTime == 0 {
+			return c.minSleep
+		}
+		sleepTime := (state.SleepTime << c.attackConstant) / ((1 << c.attackConstant) - 1)
+		if sleepTime > c.maxSleep {
+			sleepTime = c.maxSleep
+		}
+		return sleepTime
+	}
+	sleepTime := (state.SleepTime<<c.decayConstant - state.SleepTime) >> c.decayConstant
+	if sleepTime < c.minSleep {
+		sleepTime = 0
+	}
+	return sleepTime
+}

vendor/github.com/hashicorp/go-cleanhttp/LICENSE

@@ -1,363 +0,0 @@
-Mozilla Public License, version 2.0
-
-1. Definitions
-
-1.1. "Contributor"
-
-     means each individual or legal entity that creates, contributes to the
-     creation of, or owns Covered Software.
-
-1.2. "Contributor Version"
-
-     means the combination of the Contributions of others (if any) used by a
-     Contributor and that particular Contributor's Contribution.
-
-1.3. "Contribution"
-
-     means Covered Software of a particular Contributor.
-
-1.4. "Covered Software"
-
-     means Source Code Form to which the initial Contributor has attached the
-     notice in Exhibit A, the Executable Form of such Source Code Form, and
-     Modifications of such Source Code Form, in each case including portions
-     thereof.
-
-1.5. "Incompatible With Secondary Licenses"
-     means
-
-     a. that the initial Contributor has attached the notice described in
-        Exhibit B to the Covered Software; or
-
-     b. that the Covered Software was made available under the terms of
-        version 1.1 or earlier of the License, but not also under the terms of
-        a Secondary License.
-
-1.6. "Executable Form"
-
-     means any form of the work other than Source Code Form.
-
-1.7. "Larger Work"
-
-     means a work that combines Covered Software with other material, in a
-     separate file or files, that is not Covered Software.
-
-1.8. "License"
-
-     means this document.
-
-1.9. "Licensable"
-
-     means having the right to grant, to the maximum extent possible, whether
-     at the time of the initial grant or subsequently, any and all of the
-     rights conveyed by this License.
-
-1.10. "Modifications"
-
-     means any of the following:
-
-     a. any file in Source Code Form that results from an addition to,
-        deletion from, or modification of the contents of Covered Software; or
-
-     b. any new file in Source Code Form that contains any Covered Software.
-
-1.11. "Patent Claims" of a Contributor
-
-      means any patent claim(s), including without limitation, method,
-      process, and apparatus claims, in any patent Licensable by such
-      Contributor that would be infringed, but for the grant of the License,
-      by the making, using, selling, offering for sale, having made, import,
-      or transfer of either its Contributions or its Contributor Version.
-
-1.12. "Secondary License"
-
-      means either the GNU General Public License, Version 2.0, the GNU Lesser
-      General Public License, Version 2.1, the GNU Affero General Public
-      License, Version 3.0, or any later versions of those licenses.
-
-1.13. "Source Code Form"
-
-      means the form of the work preferred for making modifications.
-
-1.14. "You" (or "Your")
-
-      means an individual or a legal entity exercising rights under this
-      License. For legal entities, "You" includes any entity that controls, is
-      controlled by, or is under common control with You. For purposes of this
-      definition, "control" means (a) the power, direct or indirect, to cause
-      the direction or management of such entity, whether by contract or
-      otherwise, or (b) ownership of more than fifty percent (50%) of the
-      outstanding shares or beneficial ownership of such entity.
-
-
-2. License Grants and Conditions
-
-2.1. Grants
-
-     Each Contributor hereby grants You a world-wide, royalty-free,
-     non-exclusive license:
-
-     a. under intellectual property rights (other than patent or trademark)
-        Licensable by such Contributor to use, reproduce, make available,
-        modify, display, perform, distribute, and otherwise exploit its
-        Contributions, either on an unmodified basis, with Modifications, or
-        as part of a Larger Work; and
-
-     b. under Patent Claims of such Contributor to make, use, sell, offer for
-        sale, have made, import, and otherwise transfer either its
-        Contributions or its Contributor Version.
-
-2.2. Effective Date
-
-     The licenses granted in Section 2.1 with respect to any Contribution
-     become effective for each Contribution on the date the Contributor first
-     distributes such Contribution.
-
-2.3. Limitations on Grant Scope
-
-     The licenses granted in this Section 2 are the only rights granted under
-     this License. No additional rights or licenses will be implied from the
-     distribution or licensing of Covered Software under this License.
-     Notwithstanding Section 2.1(b) above, no patent license is granted by a
-     Contributor:
-
-     a. for any code that a Contributor has removed from Covered Software; or
-
-     b. for infringements caused by: (i) Your and any other third party's
-        modifications of Covered Software, or (ii) the combination of its
-        Contributions with other software (except as part of its Contributor
-        Version); or
-
-     c. under Patent Claims infringed by Covered Software in the absence of
-        its Contributions.
-
-     This License does not grant any rights in the trademarks, service marks,
-     or logos of any Contributor (except as may be necessary to comply with
-     the notice requirements in Section 3.4).
-
-2.4. Subsequent Licenses
-
-     No Contributor makes additional grants as a result of Your choice to
-     distribute the Covered Software under a subsequent version of this
-     License (see Section 10.2) or under the terms of a Secondary License (if
-     permitted under the terms of Section 3.3).
-
-2.5. Representation
-
-     Each Contributor represents that the Contributor believes its
-     Contributions are its original creation(s) or it has sufficient rights to
-     grant the rights to its Contributions conveyed by this License.
-
-2.6. Fair Use
-
-     This License is not intended to limit any rights You have under
-     applicable copyright doctrines of fair use, fair dealing, or other
-     equivalents.
-
-2.7. Conditions
-
-     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
-     Section 2.1.
-
-
-3. Responsibilities
-
-3.1. Distribution of Source Form
-
-     All distribution of Covered Software in Source Code Form, including any
-     Modifications that You create or to which You contribute, must be under
-     the terms of this License. You must inform recipients that the Source
-     Code Form of the Covered Software is governed by the terms of this
-     License, and how they can obtain a copy of this License. You may not
-     attempt to alter or restrict the recipients' rights in the Source Code
-     Form.
-
-3.2. Distribution of Executable Form
-
-     If You distribute Covered Software in Executable Form then:
-
-     a. such Covered Software must also be made available in Source Code Form,
-        as described in Section 3.1, and You must inform recipients of the
-        Executable Form how they can obtain a copy of such Source Code Form by
-        reasonable means in a timely manner, at a charge no more than the cost
-        of distribution to the recipient; and
-
-     b. You may distribute such Executable Form under the terms of this
-        License, or sublicense it under different terms, provided that the
-        license for the Executable Form does not attempt to limit or alter the
-        recipients' rights in the Source Code Form under this License.
-
-3.3. Distribution of a Larger Work
-
-     You may create and distribute a Larger Work under terms of Your choice,
-     provided that You also comply with the requirements of this License for
-     the Covered Software. If the Larger Work is a combination of Covered
-     Software with a work governed by one or more Secondary Licenses, and the
-     Covered Software is not Incompatible With Secondary Licenses, this
-     License permits You to additionally distribute such Covered Software
-     under the terms of such Secondary License(s), so that the recipient of
-     the Larger Work may, at their option, further distribute the Covered
-     Software under the terms of either this License or such Secondary
-     License(s).
-
-3.4. Notices
-
-     You may not remove or alter the substance of any license notices
-     (including copyright notices, patent notices, disclaimers of warranty, or
-     limitations of liability) contained within the Source Code Form of the
-     Covered Software, except that You may alter any license notices to the
-     extent required to remedy known factual inaccuracies.
-
-3.5. Application of Additional Terms
-
-     You may choose to offer, and to charge a fee for, warranty, support,
-     indemnity or liability obligations to one or more recipients of Covered
-     Software. However, You may do so only on Your own behalf, and not on
-     behalf of any Contributor. You must make it absolutely clear that any
-     such warranty, support, indemnity, or liability obligation is offered by
-     You alone, and You hereby agree to indemnify every Contributor for any
-     liability incurred by such Contributor as a result of warranty, support,
-     indemnity or liability terms You offer. You may include additional
-     disclaimers of warranty and limitations of liability specific to any
-     jurisdiction.
-
-4. Inability to Comply Due to Statute or Regulation
-
-   If it is impossible for You to comply with any of the terms of this License
-   with respect to some or all of the Covered Software due to statute,
-   judicial order, or regulation then You must: (a) comply with the terms of
-   this License to the maximum extent possible; and (b) describe the
-   limitations and the code they affect. Such description must be placed in a
-   text file included with all distributions of the Covered Software under
-   this License. Except to the extent prohibited by statute or regulation,
-   such description must be sufficiently detailed for a recipient of ordinary
-   skill to be able to understand it.
-
-5. Termination
-
-5.1. The rights granted under this License will terminate automatically if You
-     fail to comply with any of its terms. However, if You become compliant,
-     then the rights granted under this License from a particular Contributor
-     are reinstated (a) provisionally, unless and until such Contributor
-     explicitly and finally terminates Your grants, and (b) on an ongoing
-     basis, if such Contributor fails to notify You of the non-compliance by
-     some reasonable means prior to 60 days after You have come back into
-     compliance. Moreover, Your grants from a particular Contributor are
-     reinstated on an ongoing basis if such Contributor notifies You of the
-     non-compliance by some reasonable means, this is the first time You have
-     received notice of non-compliance with this License from such
-     Contributor, and You become compliant prior to 30 days after Your receipt
-     of the notice.
-
-5.2. If You initiate litigation against any entity by asserting a patent
-     infringement claim (excluding declaratory judgment actions,
-     counter-claims, and cross-claims) alleging that a Contributor Version
-     directly or indirectly infringes any patent, then the rights granted to
-     You by any and all Contributors for the Covered Software under Section
-     2.1 of this License shall terminate.
-
-5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
-     license agreements (excluding distributors and resellers) which have been
-     validly granted by You or Your distributors under this License prior to
-     termination shall survive termination.
-
-6. Disclaimer of Warranty
-
-   Covered Software is provided under this License on an "as is" basis,
-   without warranty of any kind, either expressed, implied, or statutory,
-   including, without limitation, warranties that the Covered Software is free
-   of defects, merchantable, fit for a particular purpose or non-infringing.
-   The entire risk as to the quality and performance of the Covered Software
-   is with You. Should any Covered Software prove defective in any respect,
-   You (not any Contributor) assume the cost of any necessary servicing,
-   repair, or correction. This disclaimer of warranty constitutes an essential
-   part of this License. No use of  any Covered Software is authorized under
-   this License except under this disclaimer.
-
-7. Limitation of Liability
-
-   Under no circumstances and under no legal theory, whether tort (including
-   negligence), contract, or otherwise, shall any Contributor, or anyone who
-   distributes Covered Software as permitted above, be liable to You for any
-   direct, indirect, special, incidental, or consequential damages of any
-   character including, without limitation, damages for lost profits, loss of
-   goodwill, work stoppage, computer failure or malfunction, or any and all
-   other commercial damages or losses, even if such party shall have been
-   informed of the possibility of such damages. This limitation of liability
-   shall not apply to liability for death or personal injury resulting from
-   such party's negligence to the extent applicable law prohibits such
-   limitation. Some jurisdictions do not allow the exclusion or limitation of
-   incidental or consequential damages, so this exclusion and limitation may
-   not apply to You.
-
-8. Litigation
-
-   Any litigation relating to this License may be brought only in the courts
-   of a jurisdiction where the defendant maintains its principal place of
-   business and such litigation shall be governed by laws of that
-   jurisdiction, without reference to its conflict-of-law provisions. Nothing
-   in this Section shall prevent a party's ability to bring cross-claims or
-   counter-claims.
-
-9. Miscellaneous
-
-   This License represents the complete agreement concerning the subject
-   matter hereof. If any provision of this License is held to be
-   unenforceable, such provision shall be reformed only to the extent
-   necessary to make it enforceable. Any law or regulation which provides that
-   the language of a contract shall be construed against the drafter shall not
-   be used to construe this License against a Contributor.
-
-
-10. Versions of the License
-
-10.1. New Versions
-
-      Mozilla Foundation is the license steward. Except as provided in Section
-      10.3, no one other than the license steward has the right to modify or
-      publish new versions of this License. Each version will be given a
-      distinguishing version number.
-
-10.2. Effect of New Versions
-
-      You may distribute the Covered Software under the terms of the version
-      of the License under which You originally received the Covered Software,
-      or under the terms of any subsequent version published by the license
-      steward.
-
-10.3. Modified Versions
-
-      If you create software not governed by this License, and you want to
-      create a new license for such software, you may create and use a
-      modified version of this License if you rename the license and remove
-      any references to the name of the license steward (except to note that
-      such modified license differs from this License).
-
-10.4. Distributing Source Code Form that is Incompatible With Secondary
-      Licenses If You choose to distribute Source Code Form that is
-      Incompatible With Secondary Licenses under the terms of this version of
-      the License, the notice described in Exhibit B of this License must be
-      attached.
-
-Exhibit A - Source Code Form License Notice
-
-      This Source Code Form is subject to the
-      terms of the Mozilla Public License, v.
-      2.0. If a copy of the MPL was not
-      distributed with this file, You can
-      obtain one at
-      http://mozilla.org/MPL/2.0/.
-
-If it is not possible or desirable to put the notice in a particular file,
-then You may include the notice in a location (such as a LICENSE file in a
-relevant directory) where a recipient would be likely to look for such a
-notice.
-
-You may add additional accurate notices of copyright ownership.
-
-Exhibit B - "Incompatible With Secondary Licenses" Notice
-
-      This Source Code Form is "Incompatible
-      With Secondary Licenses", as defined by
-      the Mozilla Public License, v. 2.0.
-

vendor/github.com/hashicorp/go-cleanhttp/README.md

@@ -1,30 +0,0 @@
-# cleanhttp
-
-Functions for accessing "clean" Go http.Client values
-
--------------
-
-The Go standard library contains a default `http.Client` called
-`http.DefaultClient`. It is a common idiom in Go code to start with
-`http.DefaultClient` and tweak it as necessary, and in fact, this is
-encouraged; from the `http` package documentation:
-
-> The Client's Transport typically has internal state (cached TCP connections),
-so Clients should be reused instead of created as needed. Clients are safe for
-concurrent use by multiple goroutines.
-
-Unfortunately, this is a shared value, and it is not uncommon for libraries to
-assume that they are free to modify it at will. With enough dependencies, it
-can be very easy to encounter strange problems and race conditions due to
-manipulation of this shared value across libraries and goroutines (clients are
-safe for concurrent use, but writing values to the client struct itself is not
-protected).
-
-Making things worse is the fact that a bare `http.Client` will use a default
-`http.Transport` called `http.DefaultTransport`, which is another global value
-that behaves the same way. So it is not simply enough to replace
-`http.DefaultClient` with `&http.Client{}`.
-
-This repository provides some simple functions to get a "clean" `http.Client`
--- one that uses the same default values as the Go standard library, but
-returns a client that does not share any state with other clients.

vendor/github.com/hashicorp/go-cleanhttp/cleanhttp.go

@@ -1,57 +0,0 @@
-package cleanhttp
-
-import (
-	"net"
-	"net/http"
-	"runtime"
-	"time"
-)
-
-// DefaultTransport returns a new http.Transport with similar default values to
-// http.DefaultTransport, but with idle connections and keepalives disabled.
-func DefaultTransport() *http.Transport {
-	transport := DefaultPooledTransport()
-	transport.DisableKeepAlives = true
-	transport.MaxIdleConnsPerHost = -1
-	return transport
-}
-
-// DefaultPooledTransport returns a new http.Transport with similar default
-// values to http.DefaultTransport. Do not use this for transient transports as
-// it can leak file descriptors over time. Only use this for transports that
-// will be re-used for the same host(s).
-func DefaultPooledTransport() *http.Transport {
-	transport := &http.Transport{
-		Proxy: http.ProxyFromEnvironment,
-		DialContext: (&net.Dialer{
-			Timeout:   30 * time.Second,
-			KeepAlive: 30 * time.Second,
-			DualStack: true,
-		}).DialContext,
-		MaxIdleConns:          100,
-		IdleConnTimeout:       90 * time.Second,
-		TLSHandshakeTimeout:   10 * time.Second,
-		ExpectContinueTimeout: 1 * time.Second,
-		MaxIdleConnsPerHost:   runtime.GOMAXPROCS(0) + 1,
-	}
-	return transport
-}
-
-// DefaultClient returns a new http.Client with similar default values to
-// http.Client, but with a non-shared Transport, idle connections disabled, and
-// keepalives disabled.
-func DefaultClient() *http.Client {
-	return &http.Client{
-		Transport: DefaultTransport(),
-	}
-}
-
-// DefaultPooledClient returns a new http.Client with similar default values to
-// http.Client, but with a shared Transport. Do not use this function for
-// transient clients as it can leak file descriptors over time. Only use this
-// for clients that will be re-used for the same host(s).
-func DefaultPooledClient() *http.Client {
-	return &http.Client{
-		Transport: DefaultPooledTransport(),
-	}
-}

vendor/github.com/hashicorp/go-cleanhttp/doc.go

@@ -1,20 +0,0 @@
-// Package cleanhttp offers convenience utilities for acquiring "clean"
-// http.Transport and http.Client structs.
-//
-// Values set on http.DefaultClient and http.DefaultTransport affect all
-// callers. This can have detrimental effects, esepcially in TLS contexts,
-// where client or root certificates set to talk to multiple endpoints can end
-// up displacing each other, leading to hard-to-debug issues. This package
-// provides non-shared http.Client and http.Transport structs to ensure that
-// the configuration will not be overwritten by other parts of the application
-// or dependencies.
-//
-// The DefaultClient and DefaultTransport functions disable idle connections
-// and keepalives. Without ensuring that idle connections are closed before
-// garbage collection, short-term clients/transports can leak file descriptors,
-// eventually leading to "too many open files" errors. If you will be
-// connecting to the same hosts repeatedly from the same client, you can use
-// DefaultPooledClient to receive a client that has connection pooling
-// semantics similar to http.DefaultClient.
-//
-package cleanhttp

vendor/github.com/hashicorp/go-cleanhttp/go.mod

@@ -1 +0,0 @@
-module github.com/hashicorp/go-cleanhttp

vendor/github.com/hashicorp/go-cleanhttp/handlers.go

@@ -1,43 +0,0 @@
-package cleanhttp
-
-import (
-	"net/http"
-	"strings"
-	"unicode"
-)
-
-// HandlerInput provides input options to cleanhttp's handlers
-type HandlerInput struct {
-	ErrStatus int
-}
-
-// PrintablePathCheckHandler is a middleware that ensures the request path
-// contains only printable runes.
-func PrintablePathCheckHandler(next http.Handler, input *HandlerInput) http.Handler {
-	// Nil-check on input to make it optional
-	if input == nil {
-		input = &HandlerInput{
-			ErrStatus: http.StatusBadRequest,
-		}
-	}
-
-	// Default to http.StatusBadRequest on error
-	if input.ErrStatus == 0 {
-		input.ErrStatus = http.StatusBadRequest
-	}
-
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		// Check URL path for non-printable characters
-		idx := strings.IndexFunc(r.URL.Path, func(c rune) bool {
-			return !unicode.IsPrint(c)
-		})
-
-		if idx != -1 {
-			w.WriteHeader(input.ErrStatus)
-			return
-		}
-
-		next.ServeHTTP(w, r)
-		return
-	})
-}

vendor/github.com/hashicorp/go-retryablehttp/.gitignore

@@ -1,3 +0,0 @@
-.idea/
-*.iml
-*.test

vendor/github.com/hashicorp/go-retryablehttp/.travis.yml

@@ -1,12 +0,0 @@
-sudo: false
-
-language: go
-
-go:
-  - 1.8.1
-
-branches:
-  only:
-    - master
-
-script: make updatedeps test

vendor/github.com/hashicorp/go-retryablehttp/LICENSE

@@ -1,363 +0,0 @@
-Mozilla Public License, version 2.0
-
-1. Definitions
-
-1.1. "Contributor"
-
-     means each individual or legal entity that creates, contributes to the
-     creation of, or owns Covered Software.
-
-1.2. "Contributor Version"
-
-     means the combination of the Contributions of others (if any) used by a
-     Contributor and that particular Contributor's Contribution.
-
-1.3. "Contribution"
-
-     means Covered Software of a particular Contributor.
-
-1.4. "Covered Software"
-
-     means Source Code Form to which the initial Contributor has attached the
-     notice in Exhibit A, the Executable Form of such Source Code Form, and
-     Modifications of such Source Code Form, in each case including portions
-     thereof.
-
-1.5. "Incompatible With Secondary Licenses"
-     means
-
-     a. that the initial Contributor has attached the notice described in
-        Exhibit B to the Covered Software; or
-
-     b. that the Covered Software was made available under the terms of
-        version 1.1 or earlier of the License, but not also under the terms of
-        a Secondary License.
-
-1.6. "Executable Form"
-
-     means any form of the work other than Source Code Form.
-
-1.7. "Larger Work"
-
-     means a work that combines Covered Software with other material, in a
-     separate file or files, that is not Covered Software.
-
-1.8. "License"
-
-     means this document.
-
-1.9. "Licensable"
-
-     means having the right to grant, to the maximum extent possible, whether
-     at the time of the initial grant or subsequently, any and all of the
-     rights conveyed by this License.
-
-1.10. "Modifications"
-
-     means any of the following:
-
-     a. any file in Source Code Form that results from an addition to,
-        deletion from, or modification of the contents of Covered Software; or
-
-     b. any new file in Source Code Form that contains any Covered Software.
-
-1.11. "Patent Claims" of a Contributor
-
-      means any patent claim(s), including without limitation, method,
-      process, and apparatus claims, in any patent Licensable by such
-      Contributor that would be infringed, but for the grant of the License,
-      by the making, using, selling, offering for sale, having made, import,
-      or transfer of either its Contributions or its Contributor Version.
-
-1.12. "Secondary License"
-
-      means either the GNU General Public License, Version 2.0, the GNU Lesser
-      General Public License, Version 2.1, the GNU Affero General Public
-      License, Version 3.0, or any later versions of those licenses.
-
-1.13. "Source Code Form"
-
-      means the form of the work preferred for making modifications.
-
-1.14. "You" (or "Your")
-
-      means an individual or a legal entity exercising rights under this
-      License. For legal entities, "You" includes any entity that controls, is
-      controlled by, or is under common control with You. For purposes of this
-      definition, "control" means (a) the power, direct or indirect, to cause
-      the direction or management of such entity, whether by contract or
-      otherwise, or (b) ownership of more than fifty percent (50%) of the
-      outstanding shares or beneficial ownership of such entity.
-
-
-2. License Grants and Conditions
-
-2.1. Grants
-
-     Each Contributor hereby grants You a world-wide, royalty-free,
-     non-exclusive license:
-
-     a. under intellectual property rights (other than patent or trademark)
-        Licensable by such Contributor to use, reproduce, make available,
-        modify, display, perform, distribute, and otherwise exploit its
-        Contributions, either on an unmodified basis, with Modifications, or
-        as part of a Larger Work; and
-
-     b. under Patent Claims of such Contributor to make, use, sell, offer for
-        sale, have made, import, and otherwise transfer either its
-        Contributions or its Contributor Version.
-
-2.2. Effective Date
-
-     The licenses granted in Section 2.1 with respect to any Contribution
-     become effective for each Contribution on the date the Contributor first
-     distributes such Contribution.
-
-2.3. Limitations on Grant Scope
-
-     The licenses granted in this Section 2 are the only rights granted under
-     this License. No additional rights or licenses will be implied from the
-     distribution or licensing of Covered Software under this License.
-     Notwithstanding Section 2.1(b) above, no patent license is granted by a
-     Contributor:
-
-     a. for any code that a Contributor has removed from Covered Software; or
-
-     b. for infringements caused by: (i) Your and any other third party's
-        modifications of Covered Software, or (ii) the combination of its
-        Contributions with other software (except as part of its Contributor
-        Version); or
-
-     c. under Patent Claims infringed by Covered Software in the absence of
-        its Contributions.
-
-     This License does not grant any rights in the trademarks, service marks,
-     or logos of any Contributor (except as may be necessary to comply with
-     the notice requirements in Section 3.4).
-
-2.4. Subsequent Licenses
-
-     No Contributor makes additional grants as a result of Your choice to
-     distribute the Covered Software under a subsequent version of this
-     License (see Section 10.2) or under the terms of a Secondary License (if
-     permitted under the terms of Section 3.3).
-
-2.5. Representation
-
-     Each Contributor represents that the Contributor believes its
-     Contributions are its original creation(s) or it has sufficient rights to
-     grant the rights to its Contributions conveyed by this License.
-
-2.6. Fair Use
-
-     This License is not intended to limit any rights You have under
-     applicable copyright doctrines of fair use, fair dealing, or other
-     equivalents.
-
-2.7. Conditions
-
-     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
-     Section 2.1.
-
-
-3. Responsibilities
-
-3.1. Distribution of Source Form
-
-     All distribution of Covered Software in Source Code Form, including any
-     Modifications that You create or to which You contribute, must be under
-     the terms of this License. You must inform recipients that the Source
-     Code Form of the Covered Software is governed by the terms of this
-     License, and how they can obtain a copy of this License. You may not
-     attempt to alter or restrict the recipients' rights in the Source Code
-     Form.
-
-3.2. Distribution of Executable Form
-
-     If You distribute Covered Software in Executable Form then:
-
-     a. such Covered Software must also be made available in Source Code Form,
-        as described in Section 3.1, and You must inform recipients of the
-        Executable Form how they can obtain a copy of such Source Code Form by
-        reasonable means in a timely manner, at a charge no more than the cost
-        of distribution to the recipient; and
-
-     b. You may distribute such Executable Form under the terms of this
-        License, or sublicense it under different terms, provided that the
-        license for the Executable Form does not attempt to limit or alter the
-        recipients' rights in the Source Code Form under this License.
-
-3.3. Distribution of a Larger Work
-
-     You may create and distribute a Larger Work under terms of Your choice,
-     provided that You also comply with the requirements of this License for
-     the Covered Software. If the Larger Work is a combination of Covered
-     Software with a work governed by one or more Secondary Licenses, and the
-     Covered Software is not Incompatible With Secondary Licenses, this
-     License permits You to additionally distribute such Covered Software
-     under the terms of such Secondary License(s), so that the recipient of
-     the Larger Work may, at their option, further distribute the Covered
-     Software under the terms of either this License or such Secondary
-     License(s).
-
-3.4. Notices
-
-     You may not remove or alter the substance of any license notices
-     (including copyright notices, patent notices, disclaimers of warranty, or
-     limitations of liability) contained within the Source Code Form of the
-     Covered Software, except that You may alter any license notices to the
-     extent required to remedy known factual inaccuracies.
-
-3.5. Application of Additional Terms
-
-     You may choose to offer, and to charge a fee for, warranty, support,
-     indemnity or liability obligations to one or more recipients of Covered
-     Software. However, You may do so only on Your own behalf, and not on
-     behalf of any Contributor. You must make it absolutely clear that any
-     such warranty, support, indemnity, or liability obligation is offered by
-     You alone, and You hereby agree to indemnify every Contributor for any
-     liability incurred by such Contributor as a result of warranty, support,
-     indemnity or liability terms You offer. You may include additional
-     disclaimers of warranty and limitations of liability specific to any
-     jurisdiction.
-
-4. Inability to Comply Due to Statute or Regulation
-
-   If it is impossible for You to comply with any of the terms of this License
-   with respect to some or all of the Covered Software due to statute,
-   judicial order, or regulation then You must: (a) comply with the terms of
-   this License to the maximum extent possible; and (b) describe the
-   limitations and the code they affect. Such description must be placed in a
-   text file included with all distributions of the Covered Software under
-   this License. Except to the extent prohibited by statute or regulation,
-   such description must be sufficiently detailed for a recipient of ordinary
-   skill to be able to understand it.
-
-5. Termination
-
-5.1. The rights granted under this License will terminate automatically if You
-     fail to comply with any of its terms. However, if You become compliant,
-     then the rights granted under this License from a particular Contributor
-     are reinstated (a) provisionally, unless and until such Contributor
-     explicitly and finally terminates Your grants, and (b) on an ongoing
-     basis, if such Contributor fails to notify You of the non-compliance by
-     some reasonable means prior to 60 days after You have come back into
-     compliance. Moreover, Your grants from a particular Contributor are
-     reinstated on an ongoing basis if such Contributor notifies You of the
-     non-compliance by some reasonable means, this is the first time You have
-     received notice of non-compliance with this License from such
-     Contributor, and You become compliant prior to 30 days after Your receipt
-     of the notice.
-
-5.2. If You initiate litigation against any entity by asserting a patent
-     infringement claim (excluding declaratory judgment actions,
-     counter-claims, and cross-claims) alleging that a Contributor Version
-     directly or indirectly infringes any patent, then the rights granted to
-     You by any and all Contributors for the Covered Software under Section
-     2.1 of this License shall terminate.
-
-5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
-     license agreements (excluding distributors and resellers) which have been
-     validly granted by You or Your distributors under this License prior to
-     termination shall survive termination.
-
-6. Disclaimer of Warranty
-
-   Covered Software is provided under this License on an "as is" basis,
-   without warranty of any kind, either expressed, implied, or statutory,
-   including, without limitation, warranties that the Covered Software is free
-   of defects, merchantable, fit for a particular purpose or non-infringing.
-   The entire risk as to the quality and performance of the Covered Software
-   is with You. Should any Covered Software prove defective in any respect,
-   You (not any Contributor) assume the cost of any necessary servicing,
-   repair, or correction. This disclaimer of warranty constitutes an essential
-   part of this License. No use of  any Covered Software is authorized under
-   this License except under this disclaimer.
-
-7. Limitation of Liability
-
-   Under no circumstances and under no legal theory, whether tort (including
-   negligence), contract, or otherwise, shall any Contributor, or anyone who
-   distributes Covered Software as permitted above, be liable to You for any
-   direct, indirect, special, incidental, or consequential damages of any
-   character including, without limitation, damages for lost profits, loss of
-   goodwill, work stoppage, computer failure or malfunction, or any and all
-   other commercial damages or losses, even if such party shall have been
-   informed of the possibility of such damages. This limitation of liability
-   shall not apply to liability for death or personal injury resulting from
-   such party's negligence to the extent applicable law prohibits such
-   limitation. Some jurisdictions do not allow the exclusion or limitation of
-   incidental or consequential damages, so this exclusion and limitation may
-   not apply to You.
-
-8. Litigation
-
-   Any litigation relating to this License may be brought only in the courts
-   of a jurisdiction where the defendant maintains its principal place of
-   business and such litigation shall be governed by laws of that
-   jurisdiction, without reference to its conflict-of-law provisions. Nothing
-   in this Section shall prevent a party's ability to bring cross-claims or
-   counter-claims.
-
-9. Miscellaneous
-
-   This License represents the complete agreement concerning the subject
-   matter hereof. If any provision of this License is held to be
-   unenforceable, such provision shall be reformed only to the extent
-   necessary to make it enforceable. Any law or regulation which provides that
-   the language of a contract shall be construed against the drafter shall not
-   be used to construe this License against a Contributor.
-
-
-10. Versions of the License
-
-10.1. New Versions
-
-      Mozilla Foundation is the license steward. Except as provided in Section
-      10.3, no one other than the license steward has the right to modify or
-      publish new versions of this License. Each version will be given a
-      distinguishing version number.
-
-10.2. Effect of New Versions
-
-      You may distribute the Covered Software under the terms of the version
-      of the License under which You originally received the Covered Software,
-      or under the terms of any subsequent version published by the license
-      steward.
-
-10.3. Modified Versions
-
-      If you create software not governed by this License, and you want to
-      create a new license for such software, you may create and use a
-      modified version of this License if you rename the license and remove
-      any references to the name of the license steward (except to note that
-      such modified license differs from this License).
-
-10.4. Distributing Source Code Form that is Incompatible With Secondary
-      Licenses If You choose to distribute Source Code Form that is
-      Incompatible With Secondary Licenses under the terms of this version of
-      the License, the notice described in Exhibit B of this License must be
-      attached.
-
-Exhibit A - Source Code Form License Notice
-
-      This Source Code Form is subject to the
-      terms of the Mozilla Public License, v.
-      2.0. If a copy of the MPL was not
-      distributed with this file, You can
-      obtain one at
-      http://mozilla.org/MPL/2.0/.
-
-If it is not possible or desirable to put the notice in a particular file,
-then You may include the notice in a location (such as a LICENSE file in a
-relevant directory) where a recipient would be likely to look for such a
-notice.
-
-You may add additional accurate notices of copyright ownership.
-
-Exhibit B - "Incompatible With Secondary Licenses" Notice
-
-      This Source Code Form is "Incompatible
-      With Secondary Licenses", as defined by
-      the Mozilla Public License, v. 2.0.
-

vendor/github.com/hashicorp/go-retryablehttp/Makefile

@@ -1,11 +0,0 @@
-default: test
-
-test:
-	go vet ./...
-	go test -race ./...
-
-updatedeps:
-	go get -f -t -u ./...
-	go get -f -u ./...
-
-.PHONY: default test updatedeps

vendor/github.com/hashicorp/go-retryablehttp/README.md

@@ -1,46 +0,0 @@
-go-retryablehttp
-================
-
-[![Build Status](http://img.shields.io/travis/hashicorp/go-retryablehttp.svg?style=flat-square)][travis]
-[![Go Documentation](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)][godocs]
-
-[travis]: http://travis-ci.org/hashicorp/go-retryablehttp
-[godocs]: http://godoc.org/github.com/hashicorp/go-retryablehttp
-
-The `retryablehttp` package provides a familiar HTTP client interface with
-automatic retries and exponential backoff. It is a thin wrapper over the
-standard `net/http` client library and exposes nearly the same public API. This
-makes `retryablehttp` very easy to drop into existing programs.
-
-`retryablehttp` performs automatic retries under certain conditions. Mainly, if
-an error is returned by the client (connection errors, etc.), or if a 500-range
-response code is received (except 501), then a retry is invoked after a wait
-period.  Otherwise, the response is returned and left to the caller to
-interpret.
-
-The main difference from `net/http` is that requests which take a request body
-(POST/PUT et. al) can have the body provided in a number of ways (some more or
-less efficient) that allow "rewinding" the request body if the initial request
-fails so that the full request can be attempted again. See the
-[godoc](http://godoc.org/github.com/hashicorp/go-retryablehttp) for more
-details.
-
-Example Use
-===========
-
-Using this library should look almost identical to what you would do with
-`net/http`. The most simple example of a GET request is shown below:
-
-```go
-resp, err := retryablehttp.Get("/foo")
-if err != nil {
-    panic(err)
-}
-```
-
-The returned response object is an `*http.Response`, the same thing you would
-usually get from `net/http`. Had the request failed one or more times, the above
-call would block and retry with exponential backoff.
-
-For more usage and examples see the
-[godoc](http://godoc.org/github.com/hashicorp/go-retryablehttp).

vendor/github.com/hashicorp/go-retryablehttp/client.go

@@ -1,528 +0,0 @@
-// The retryablehttp package provides a familiar HTTP client interface with
-// automatic retries and exponential backoff. It is a thin wrapper over the
-// standard net/http client library and exposes nearly the same public API.
-// This makes retryablehttp very easy to drop into existing programs.
-//
-// retryablehttp performs automatic retries under certain conditions. Mainly, if
-// an error is returned by the client (connection errors etc), or if a 500-range
-// response is received, then a retry is invoked. Otherwise, the response is
-// returned and left to the caller to interpret.
-//
-// Requests which take a request body should provide a non-nil function
-// parameter. The best choice is to provide either a function satisfying
-// ReaderFunc which provides multiple io.Readers in an efficient manner, a
-// *bytes.Buffer (the underlying raw byte slice will be used) or a raw byte
-// slice. As it is a reference type, and we will wrap it as needed by readers,
-// we can efficiently re-use the request body without needing to copy it. If an
-// io.Reader (such as a *bytes.Reader) is provided, the full body will be read
-// prior to the first request, and will be efficiently re-used for any retries.
-// ReadSeeker can be used, but some users have observed occasional data races
-// between the net/http library and the Seek functionality of some
-// implementations of ReadSeeker, so should be avoided if possible.
-package retryablehttp
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"math"
-	"math/rand"
-	"net/http"
-	"net/url"
-	"os"
-	"strings"
-	"time"
-
-	cleanhttp "github.com/hashicorp/go-cleanhttp"
-)
-
-var (
-	// Default retry configuration
-	defaultRetryWaitMin = 1 * time.Second
-	defaultRetryWaitMax = 30 * time.Second
-	defaultRetryMax     = 4
-
-	// defaultClient is used for performing requests without explicitly making
-	// a new client. It is purposely private to avoid modifications.
-	defaultClient = NewClient()
-
-	// We need to consume response bodies to maintain http connections, but
-	// limit the size we consume to respReadLimit.
-	respReadLimit = int64(4096)
-)
-
-// ReaderFunc is the type of function that can be given natively to NewRequest
-type ReaderFunc func() (io.Reader, error)
-
-// LenReader is an interface implemented by many in-memory io.Reader's. Used
-// for automatically sending the right Content-Length header when possible.
-type LenReader interface {
-	Len() int
-}
-
-// Request wraps the metadata needed to create HTTP requests.
-type Request struct {
-	// body is a seekable reader over the request body payload. This is
-	// used to rewind the request data in between retries.
-	body ReaderFunc
-
-	// Embed an HTTP request directly. This makes a *Request act exactly
-	// like an *http.Request so that all meta methods are supported.
-	*http.Request
-}
-
-// WithContext returns wrapped Request with a shallow copy of underlying *http.Request
-// with its context changed to ctx. The provided ctx must be non-nil.
-func (r *Request) WithContext(ctx context.Context) *Request {
-	r.Request = r.Request.WithContext(ctx)
-	return r
-}
-
-// BodyBytes allows accessing the request body. It is an analogue to
-// http.Request's Body variable, but it returns a copy of the underlying data
-// rather than consuming it.
-//
-// This function is not thread-safe; do not call it at the same time as another
-// call, or at the same time this request is being used with Client.Do.
-func (r *Request) BodyBytes() ([]byte, error) {
-	if r.body == nil {
-		return nil, nil
-	}
-	body, err := r.body()
-	if err != nil {
-		return nil, err
-	}
-	buf := new(bytes.Buffer)
-	_, err = buf.ReadFrom(body)
-	if err != nil {
-		return nil, err
-	}
-	return buf.Bytes(), nil
-}
-
-// NewRequest creates a new wrapped request.
-func NewRequest(method, url string, rawBody interface{}) (*Request, error) {
-	var err error
-	var body ReaderFunc
-	var contentLength int64
-
-	if rawBody != nil {
-		switch rawBody.(type) {
-		// If they gave us a function already, great! Use it.
-		case ReaderFunc:
-			body = rawBody.(ReaderFunc)
-			tmp, err := body()
-			if err != nil {
-				return nil, err
-			}
-			if lr, ok := tmp.(LenReader); ok {
-				contentLength = int64(lr.Len())
-			}
-			if c, ok := tmp.(io.Closer); ok {
-				c.Close()
-			}
-
-		case func() (io.Reader, error):
-			body = rawBody.(func() (io.Reader, error))
-			tmp, err := body()
-			if err != nil {
-				return nil, err
-			}
-			if lr, ok := tmp.(LenReader); ok {
-				contentLength = int64(lr.Len())
-			}
-			if c, ok := tmp.(io.Closer); ok {
-				c.Close()
-			}
-
-		// If a regular byte slice, we can read it over and over via new
-		// readers
-		case []byte:
-			buf := rawBody.([]byte)
-			body = func() (io.Reader, error) {
-				return bytes.NewReader(buf), nil
-			}
-			contentLength = int64(len(buf))
-
-		// If a bytes.Buffer we can read the underlying byte slice over and
-		// over
-		case *bytes.Buffer:
-			buf := rawBody.(*bytes.Buffer)
-			body = func() (io.Reader, error) {
-				return bytes.NewReader(buf.Bytes()), nil
-			}
-			contentLength = int64(buf.Len())
-
-		// We prioritize *bytes.Reader here because we don't really want to
-		// deal with it seeking so want it to match here instead of the
-		// io.ReadSeeker case.
-		case *bytes.Reader:
-			buf, err := ioutil.ReadAll(rawBody.(*bytes.Reader))
-			if err != nil {
-				return nil, err
-			}
-			body = func() (io.Reader, error) {
-				return bytes.NewReader(buf), nil
-			}
-			contentLength = int64(len(buf))
-
-		// Compat case
-		case io.ReadSeeker:
-			raw := rawBody.(io.ReadSeeker)
-			body = func() (io.Reader, error) {
-				raw.Seek(0, 0)
-				return ioutil.NopCloser(raw), nil
-			}
-			if lr, ok := raw.(LenReader); ok {
-				contentLength = int64(lr.Len())
-			}
-
-		// Read all in so we can reset
-		case io.Reader:
-			buf, err := ioutil.ReadAll(rawBody.(io.Reader))
-			if err != nil {
-				return nil, err
-			}
-			body = func() (io.Reader, error) {
-				return bytes.NewReader(buf), nil
-			}
-			contentLength = int64(len(buf))
-
-		default:
-			return nil, fmt.Errorf("cannot handle type %T", rawBody)
-		}
-	}
-
-	httpReq, err := http.NewRequest(method, url, nil)
-	if err != nil {
-		return nil, err
-	}
-	httpReq.ContentLength = contentLength
-
-	return &Request{body, httpReq}, nil
-}
-
-// Logger interface allows to use other loggers than
-// standard log.Logger.
-type Logger interface {
-	Printf(string, ...interface{})
-}
-
-// RequestLogHook allows a function to run before each retry. The HTTP
-// request which will be made, and the retry number (0 for the initial
-// request) are available to users. The internal logger is exposed to
-// consumers.
-type RequestLogHook func(Logger, *http.Request, int)
-
-// ResponseLogHook is like RequestLogHook, but allows running a function
-// on each HTTP response. This function will be invoked at the end of
-// every HTTP request executed, regardless of whether a subsequent retry
-// needs to be performed or not. If the response body is read or closed
-// from this method, this will affect the response returned from Do().
-type ResponseLogHook func(Logger, *http.Response)
-
-// CheckRetry specifies a policy for handling retries. It is called
-// following each request with the response and error values returned by
-// the http.Client. If CheckRetry returns false, the Client stops retrying
-// and returns the response to the caller. If CheckRetry returns an error,
-// that error value is returned in lieu of the error from the request. The
-// Client will close any response body when retrying, but if the retry is
-// aborted it is up to the CheckResponse callback to properly close any
-// response body before returning.
-type CheckRetry func(ctx context.Context, resp *http.Response, err error) (bool, error)
-
-// Backoff specifies a policy for how long to wait between retries.
-// It is called after a failing request to determine the amount of time
-// that should pass before trying again.
-type Backoff func(min, max time.Duration, attemptNum int, resp *http.Response) time.Duration
-
-// ErrorHandler is called if retries are expired, containing the last status
-// from the http library. If not specified, default behavior for the library is
-// to close the body and return an error indicating how many tries were
-// attempted. If overriding this, be sure to close the body if needed.
-type ErrorHandler func(resp *http.Response, err error, numTries int) (*http.Response, error)
-
-// Client is used to make HTTP requests. It adds additional functionality
-// like automatic retries to tolerate minor outages.
-type Client struct {
-	HTTPClient *http.Client // Internal HTTP client.
-	Logger     Logger       // Customer logger instance.
-
-	RetryWaitMin time.Duration // Minimum time to wait
-	RetryWaitMax time.Duration // Maximum time to wait
-	RetryMax     int           // Maximum number of retries
-
-	// RequestLogHook allows a user-supplied function to be called
-	// before each retry.
-	RequestLogHook RequestLogHook
-
-	// ResponseLogHook allows a user-supplied function to be called
-	// with the response from each HTTP request executed.
-	ResponseLogHook ResponseLogHook
-
-	// CheckRetry specifies the policy for handling retries, and is called
-	// after each request. The default policy is DefaultRetryPolicy.
-	CheckRetry CheckRetry
-
-	// Backoff specifies the policy for how long to wait between retries
-	Backoff Backoff
-
-	// ErrorHandler specifies the custom error handler to use, if any
-	ErrorHandler ErrorHandler
-}
-
-// NewClient creates a new Client with default settings.
-func NewClient() *Client {
-	return &Client{
-		HTTPClient:   cleanhttp.DefaultClient(),
-		Logger:       log.New(os.Stderr, "", log.LstdFlags),
-		RetryWaitMin: defaultRetryWaitMin,
-		RetryWaitMax: defaultRetryWaitMax,
-		RetryMax:     defaultRetryMax,
-		CheckRetry:   DefaultRetryPolicy,
-		Backoff:      DefaultBackoff,
-	}
-}
-
-// DefaultRetryPolicy provides a default callback for Client.CheckRetry, which
-// will retry on connection errors and server errors.
-func DefaultRetryPolicy(ctx context.Context, resp *http.Response, err error) (bool, error) {
-	// do not retry on context.Canceled or context.DeadlineExceeded
-	if ctx.Err() != nil {
-		return false, ctx.Err()
-	}
-
-	if err != nil {
-		return true, err
-	}
-	// Check the response code. We retry on 500-range responses to allow
-	// the server time to recover, as 500's are typically not permanent
-	// errors and may relate to outages on the server side. This will catch
-	// invalid response codes as well, like 0 and 999.
-	if resp.StatusCode == 0 || (resp.StatusCode >= 500 && resp.StatusCode != 501) {
-		return true, nil
-	}
-
-	return false, nil
-}
-
-// DefaultBackoff provides a default callback for Client.Backoff which
-// will perform exponential backoff based on the attempt number and limited
-// by the provided minimum and maximum durations.
-func DefaultBackoff(min, max time.Duration, attemptNum int, resp *http.Response) time.Duration {
-	mult := math.Pow(2, float64(attemptNum)) * float64(min)
-	sleep := time.Duration(mult)
-	if float64(sleep) != mult || sleep > max {
-		sleep = max
-	}
-	return sleep
-}
-
-// LinearJitterBackoff provides a callback for Client.Backoff which will
-// perform linear backoff based on the attempt number and with jitter to
-// prevent a thundering herd.
-//
-// min and max here are *not* absolute values. The number to be multipled by
-// the attempt number will be chosen at random from between them, thus they are
-// bounding the jitter.
-//
-// For instance:
-// * To get strictly linear backoff of one second increasing each retry, set
-// both to one second (1s, 2s, 3s, 4s, ...)
-// * To get a small amount of jitter centered around one second increasing each
-// retry, set to around one second, such as a min of 800ms and max of 1200ms
-// (892ms, 2102ms, 2945ms, 4312ms, ...)
-// * To get extreme jitter, set to a very wide spread, such as a min of 100ms
-// and a max of 20s (15382ms, 292ms, 51321ms, 35234ms, ...)
-func LinearJitterBackoff(min, max time.Duration, attemptNum int, resp *http.Response) time.Duration {
-	// attemptNum always starts at zero but we want to start at 1 for multiplication
-	attemptNum++
-
-	if max <= min {
-		// Unclear what to do here, or they are the same, so return min *
-		// attemptNum
-		return min * time.Duration(attemptNum)
-	}
-
-	// Seed rand; doing this every time is fine
-	rand := rand.New(rand.NewSource(int64(time.Now().Nanosecond())))
-
-	// Pick a random number that lies somewhere between the min and max and
-	// multiply by the attemptNum. attemptNum starts at zero so we always
-	// increment here. We first get a random percentage, then apply that to the
-	// difference between min and max, and add to min.
-	jitter := rand.Float64() * float64(max-min)
-	jitterMin := int64(jitter) + int64(min)
-	return time.Duration(jitterMin * int64(attemptNum))
-}
-
-// PassthroughErrorHandler is an ErrorHandler that directly passes through the
-// values from the net/http library for the final request. The body is not
-// closed.
-func PassthroughErrorHandler(resp *http.Response, err error, _ int) (*http.Response, error) {
-	return resp, err
-}
-
-// Do wraps calling an HTTP method with retries.
-func (c *Client) Do(req *Request) (*http.Response, error) {
-	if c.Logger != nil {
-		c.Logger.Printf("[DEBUG] %s %s", req.Method, req.URL)
-	}
-
-	var resp *http.Response
-	var err error
-
-	for i := 0; ; i++ {
-		var code int // HTTP response code
-
-		// Always rewind the request body when non-nil.
-		if req.body != nil {
-			body, err := req.body()
-			if err != nil {
-				return resp, err
-			}
-			if c, ok := body.(io.ReadCloser); ok {
-				req.Request.Body = c
-			} else {
-				req.Request.Body = ioutil.NopCloser(body)
-			}
-		}
-
-		if c.RequestLogHook != nil {
-			c.RequestLogHook(c.Logger, req.Request, i)
-		}
-
-		// Attempt the request
-		resp, err = c.HTTPClient.Do(req.Request)
-		if resp != nil {
-			code = resp.StatusCode
-		}
-
-		// Check if we should continue with retries.
-		checkOK, checkErr := c.CheckRetry(req.Request.Context(), resp, err)
-
-		if err != nil {
-			if c.Logger != nil {
-				c.Logger.Printf("[ERR] %s %s request failed: %v", req.Method, req.URL, err)
-			}
-		} else {
-			// Call this here to maintain the behavior of logging all requests,
-			// even if CheckRetry signals to stop.
-			if c.ResponseLogHook != nil {
-				// Call the response logger function if provided.
-				c.ResponseLogHook(c.Logger, resp)
-			}
-		}
-
-		// Now decide if we should continue.
-		if !checkOK {
-			if checkErr != nil {
-				err = checkErr
-			}
-			return resp, err
-		}
-
-		// We do this before drainBody beause there's no need for the I/O if
-		// we're breaking out
-		remain := c.RetryMax - i
-		if remain <= 0 {
-			break
-		}
-
-		// We're going to retry, consume any response to reuse the connection.
-		if err == nil && resp != nil {
-			c.drainBody(resp.Body)
-		}
-
-		wait := c.Backoff(c.RetryWaitMin, c.RetryWaitMax, i, resp)
-		desc := fmt.Sprintf("%s %s", req.Method, req.URL)
-		if code > 0 {
-			desc = fmt.Sprintf("%s (status: %d)", desc, code)
-		}
-		if c.Logger != nil {
-			c.Logger.Printf("[DEBUG] %s: retrying in %s (%d left)", desc, wait, remain)
-		}
-		time.Sleep(wait)
-	}
-
-	if c.ErrorHandler != nil {
-		return c.ErrorHandler(resp, err, c.RetryMax+1)
-	}
-
-	// By default, we close the response body and return an error without
-	// returning the response
-	if resp != nil {
-		resp.Body.Close()
-	}
-	return nil, fmt.Errorf("%s %s giving up after %d attempts",
-		req.Method, req.URL, c.RetryMax+1)
-}
-
-// Try to read the response body so we can reuse this connection.
-func (c *Client) drainBody(body io.ReadCloser) {
-	defer body.Close()
-	_, err := io.Copy(ioutil.Discard, io.LimitReader(body, respReadLimit))
-	if err != nil {
-		if c.Logger != nil {
-			c.Logger.Printf("[ERR] error reading response body: %v", err)
-		}
-	}
-}
-
-// Get is a shortcut for doing a GET request without making a new client.
-func Get(url string) (*http.Response, error) {
-	return defaultClient.Get(url)
-}
-
-// Get is a convenience helper for doing simple GET requests.
-func (c *Client) Get(url string) (*http.Response, error) {
-	req, err := NewRequest("GET", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return c.Do(req)
-}
-
-// Head is a shortcut for doing a HEAD request without making a new client.
-func Head(url string) (*http.Response, error) {
-	return defaultClient.Head(url)
-}
-
-// Head is a convenience method for doing simple HEAD requests.
-func (c *Client) Head(url string) (*http.Response, error) {
-	req, err := NewRequest("HEAD", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return c.Do(req)
-}
-
-// Post is a shortcut for doing a POST request without making a new client.
-func Post(url, bodyType string, body interface{}) (*http.Response, error) {
-	return defaultClient.Post(url, bodyType, body)
-}
-
-// Post is a convenience method for doing simple POST requests.
-func (c *Client) Post(url, bodyType string, body interface{}) (*http.Response, error) {
-	req, err := NewRequest("POST", url, body)
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Set("Content-Type", bodyType)
-	return c.Do(req)
-}
-
-// PostForm is a shortcut to perform a POST with form data without creating
-// a new client.
-func PostForm(url string, data url.Values) (*http.Response, error) {
-	return defaultClient.PostForm(url, data)
-}
-
-// PostForm is a convenience method for doing simple POST operations using
-// pre-filled url.Values form data.
-func (c *Client) PostForm(url string, data url.Values) (*http.Response, error) {
-	return c.Post(url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
-}

vendor/github.com/hashicorp/go-retryablehttp/go.mod

@@ -1,3 +0,0 @@
-module github.com/hashicorp/go-retryablehttp
-
-require github.com/hashicorp/go-cleanhttp v0.5.0

vendor/github.com/hashicorp/go-retryablehttp/go.sum

@@ -1,2 +0,0 @@
-github.com/hashicorp/go-cleanhttp v0.5.0 h1:wvCrVc9TjDls6+YGAF2hAifE1E5U1+b4tH6KdvN3Gig=
-github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=

vendor/github.com/koofr/go-httpclient/.gitignore

@@ -0,0 +1,11 @@
+/bin
+/pkg
+
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# developer specific
+*.sublime-workspace
+*.sublime-project

vendor/github.com/koofr/go-httpclient/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Koofr
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/koofr/go-httpclient/README.md

@@ -0,0 +1,15 @@
+go-httpclient
+=============
+
+Go HTTP client.
+
+[![GoDoc](https://godoc.org/github.com/koofr/go-httpclient?status.png)](https://godoc.org/github.com/koofr/go-httpclient)
+
+## Install
+
+    go get github.com/koofr/go-httpclient
+
+## Testing
+
+    go get -t
+    go test

vendor/github.com/koofr/go-httpclient/errors.go

@@ -0,0 +1,38 @@
+package httpclient
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+)
+
+type InvalidStatusError struct {
+	Expected []int
+	Got      int
+	Headers  http.Header
+	Content  string
+}
+
+func (e InvalidStatusError) Error() string {
+	return fmt.Sprintf("Invalid response status! Got %d, expected %d; headers: %s, content: %s", e.Got, e.Expected, e.Headers, e.Content)
+}
+
+func IsInvalidStatusError(err error) (invalidStatusError *InvalidStatusError, ok bool) {
+	if ise, ok := err.(InvalidStatusError); ok {
+		return &ise, true
+	} else if ise, ok := err.(*InvalidStatusError); ok {
+		return ise, true
+	} else {
+		return nil, false
+	}
+}
+
+func IsInvalidStatusCode(err error, statusCode int) bool {
+	if ise, ok := IsInvalidStatusError(err); ok {
+		return ise.Got == statusCode
+	} else {
+		return false
+	}
+}
+
+var RateLimitTimeoutError = errors.New("HTTPClient rate limit timeout")

vendor/github.com/koofr/go-httpclient/httpclient.go

@@ -0,0 +1,351 @@
+package httpclient
+
+import (
+	"bytes"
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+)
+
+var XmlHeaderBytes []byte = []byte(xml.Header)
+
+type HTTPClient struct {
+	BaseURL          *url.URL
+	Headers          http.Header
+	Client           *http.Client
+	PostHooks        map[int]func(*http.Request, *http.Response) error
+	rateLimited      bool
+	rateLimitChan    chan struct{}
+	rateLimitTimeout time.Duration
+}
+
+func New() (httpClient *HTTPClient) {
+	return &HTTPClient{
+		Client:    HttpClient,
+		Headers:   make(http.Header),
+		PostHooks: make(map[int]func(*http.Request, *http.Response) error),
+	}
+}
+
+func Insecure() (httpClient *HTTPClient) {
+	httpClient = New()
+	httpClient.Client = InsecureHttpClient
+	return httpClient
+}
+
+var DefaultClient = New()
+
+func (c *HTTPClient) SetPostHook(onStatus int, hook func(*http.Request, *http.Response) error) {
+	c.PostHooks[onStatus] = hook
+}
+
+func (c *HTTPClient) SetRateLimit(limit int, timeout time.Duration) {
+	c.rateLimited = true
+	c.rateLimitChan = make(chan struct{}, limit)
+
+	for i := 0; i < limit; i++ {
+		c.rateLimitChan <- struct{}{}
+	}
+
+	c.rateLimitTimeout = timeout
+}
+
+func (c *HTTPClient) buildURL(req *RequestData) *url.URL {
+	bu := c.BaseURL
+
+	rpath := req.Path
+
+	if strings.HasSuffix(bu.Path, "/") && strings.HasPrefix(rpath, "/") {
+		rpath = rpath[1:]
+	}
+
+	opaque := EscapePath(bu.Path + rpath)
+
+	u := &url.URL{
+		Scheme: bu.Scheme,
+		Host:   bu.Host,
+		Opaque: opaque,
+	}
+
+	if req.Params != nil {
+		u.RawQuery = req.Params.Encode()
+	}
+
+	return u
+}
+
+func (c *HTTPClient) setHeaders(req *RequestData, httpReq *http.Request) {
+	switch req.RespEncoding {
+	case EncodingJSON:
+		httpReq.Header.Set("Accept", "application/json")
+	case EncodingXML:
+		httpReq.Header.Set("Accept", "application/xml")
+	}
+
+	if c.Headers != nil {
+		for key, values := range c.Headers {
+			for _, value := range values {
+				httpReq.Header.Set(key, value)
+			}
+		}
+	}
+
+	if req.Headers != nil {
+		for key, values := range req.Headers {
+			for _, value := range values {
+				httpReq.Header.Set(key, value)
+			}
+		}
+	}
+}
+
+func (c *HTTPClient) checkStatus(req *RequestData, response *http.Response) (err error) {
+	if req.ExpectedStatus != nil {
+		statusOk := false
+
+		for _, status := range req.ExpectedStatus {
+			if response.StatusCode == status {
+				statusOk = true
+			}
+		}
+
+		if !statusOk {
+			lr := io.LimitReader(response.Body, 10*1024)
+			contentBytes, _ := ioutil.ReadAll(lr)
+			content := string(contentBytes)
+
+			err = InvalidStatusError{
+				Expected: req.ExpectedStatus,
+				Got:      response.StatusCode,
+				Headers:  response.Header,
+				Content:  content,
+			}
+
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (c *HTTPClient) unmarshalResponse(req *RequestData, response *http.Response) (err error) {
+	var buf []byte
+
+	switch req.RespEncoding {
+	case EncodingJSON:
+		defer response.Body.Close()
+
+		if buf, err = ioutil.ReadAll(response.Body); err != nil {
+			return err
+		}
+
+		err = json.Unmarshal(buf, req.RespValue)
+
+		if err != nil {
+			return err
+		}
+
+		return nil
+
+	case EncodingXML:
+		defer response.Body.Close()
+
+		if buf, err = ioutil.ReadAll(response.Body); err != nil {
+			return err
+		}
+
+		err = xml.Unmarshal(buf, req.RespValue)
+
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+
+	switch req.RespValue.(type) {
+	case *[]byte:
+		defer response.Body.Close()
+
+		if buf, err = ioutil.ReadAll(response.Body); err != nil {
+			return err
+		}
+
+		respVal := req.RespValue.(*[]byte)
+		*respVal = buf
+
+		return nil
+	}
+
+	if req.RespConsume {
+		defer response.Body.Close()
+		ioutil.ReadAll(response.Body)
+	}
+
+	return nil
+}
+
+func (c *HTTPClient) marshalRequest(req *RequestData) (err error) {
+	if req.ReqReader != nil || req.ReqValue == nil {
+		return nil
+	}
+
+	if req.Headers == nil {
+		req.Headers = make(http.Header)
+	}
+
+	var buf []byte
+
+	switch req.ReqEncoding {
+	case EncodingJSON:
+		buf, err = json.Marshal(req.ReqValue)
+
+		if err != nil {
+			return err
+		}
+
+		req.ReqReader = bytes.NewReader(buf)
+		req.Headers.Set("Content-Type", "application/json")
+		req.Headers.Set("Content-Length", fmt.Sprintf("%d", len(buf)))
+
+		req.ReqContentLength = int64(len(buf))
+
+		return nil
+
+	case EncodingXML:
+		buf, err = xml.Marshal(req.ReqValue)
+
+		if err != nil {
+			return err
+		}
+
+		buf = append(XmlHeaderBytes, buf...)
+
+		req.ReqReader = bytes.NewReader(buf)
+		req.Headers.Set("Content-Type", "application/xml")
+		req.Headers.Set("Content-Length", fmt.Sprintf("%d", len(buf)))
+
+		req.ReqContentLength = int64(len(buf))
+
+		return nil
+
+	case EncodingForm:
+		if data, ok := req.ReqValue.(url.Values); ok {
+			formStr := data.Encode()
+			req.ReqReader = strings.NewReader(formStr)
+			req.Headers.Set("Content-Type", "application/x-www-form-urlencoded")
+
+			req.Headers.Set("Content-Length", fmt.Sprintf("%d", len(formStr)))
+
+			req.ReqContentLength = int64(len(formStr))
+
+			return nil
+		} else {
+			return fmt.Errorf("HTTPClient: invalid ReqValue type %T", req.ReqValue)
+		}
+	}
+
+	return fmt.Errorf("HTTPClient: invalid ReqEncoding: %s", req.ReqEncoding)
+}
+
+func (c *HTTPClient) runPostHook(req *http.Request, response *http.Response) (err error) {
+	hook, ok := c.PostHooks[response.StatusCode]
+
+	if ok {
+		err = hook(req, response)
+	}
+
+	return err
+}
+
+func (c *HTTPClient) Request(req *RequestData) (response *http.Response, err error) {
+	err = c.marshalRequest(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	r, err := http.NewRequest(req.Method, req.FullURL, req.ReqReader)
+
+	if err != nil {
+		return nil, err
+	}
+
+	r.ContentLength = req.ReqContentLength
+
+	if req.FullURL == "" {
+		r.URL = c.buildURL(req)
+		r.Host = r.URL.Host
+	}
+
+	c.setHeaders(req, r)
+
+	if c.rateLimited {
+		if c.rateLimitTimeout > 0 {
+			select {
+			case t := <-c.rateLimitChan:
+				defer func() {
+					c.rateLimitChan <- t
+				}()
+			case <-time.After(c.rateLimitTimeout):
+				return nil, RateLimitTimeoutError
+			}
+		} else {
+			t := <-c.rateLimitChan
+			defer func() {
+				c.rateLimitChan <- t
+			}()
+		}
+	}
+
+	isTraceEnabled := os.Getenv("HTTPCLIENT_TRACE") != ""
+
+	if isTraceEnabled {
+		requestBytes, _ := httputil.DumpRequestOut(r, true)
+		fmt.Println(string(requestBytes))
+	}
+
+	if req.IgnoreRedirects {
+		transport := c.Client.Transport
+
+		if transport == nil {
+			transport = http.DefaultTransport
+		}
+
+		response, err = transport.RoundTrip(r)
+	} else {
+		response, err = c.Client.Do(r)
+	}
+
+	if isTraceEnabled {
+		responseBytes, _ := httputil.DumpResponse(response, true)
+		fmt.Println(string(responseBytes))
+	}
+
+	if err != nil {
+		return response, err
+	}
+
+	if err = c.runPostHook(r, response); err != nil {
+		return response, err
+	}
+
+	if err = c.checkStatus(req, response); err != nil {
+		defer response.Body.Close()
+		return response, err
+	}
+
+	if err = c.unmarshalResponse(req, response); err != nil {
+		return response, err
+	}
+
+	return response, nil
+}

vendor/github.com/koofr/go-httpclient/requestdata.go

@@ -0,0 +1,96 @@
+package httpclient
+
+import (
+	"io"
+	"net/http"
+	"net/url"
+)
+
+type Encoding string
+
+const (
+	EncodingJSON = "JSON"
+	EncodingXML  = "XML"
+	EncodingForm = "Form"
+)
+
+type RequestData struct {
+	Method           string
+	Path             string
+	Params           url.Values
+	FullURL          string // client.BaseURL + Path or FullURL
+	Headers          http.Header
+	ReqReader        io.Reader
+	ReqEncoding      Encoding
+	ReqValue         interface{}
+	ReqContentLength int64
+	ExpectedStatus   []int
+	IgnoreRedirects  bool
+	RespEncoding     Encoding
+	RespValue        interface{}
+	RespConsume      bool
+}
+
+func (r *RequestData) CanCopy() bool {
+	if r.ReqReader != nil {
+		return false
+	}
+
+	return true
+}
+
+func (r *RequestData) Copy() (ok bool, nr *RequestData) {
+	if !r.CanCopy() {
+		return false, nil
+	}
+
+	nr = &RequestData{
+		Method:          r.Method,
+		Path:            r.Path,
+		FullURL:         r.FullURL,
+		ReqEncoding:     r.ReqEncoding,
+		ReqValue:        r.ReqValue,
+		IgnoreRedirects: r.IgnoreRedirects,
+		RespEncoding:    r.RespEncoding,
+		RespValue:       r.RespValue,
+		RespConsume:     r.RespConsume,
+	}
+
+	if r.Params != nil {
+		nr.Params = make(url.Values)
+
+		for k, vs := range r.Params {
+			nvs := make([]string, len(vs))
+
+			for i, v := range vs {
+				nvs[i] = v
+			}
+
+			nr.Params[k] = nvs
+		}
+	}
+
+	if r.Headers != nil {
+		nr.Headers = make(http.Header)
+
+		for k, vs := range r.Headers {
+			nvs := make([]string, len(vs))
+
+			for i, v := range vs {
+				nvs[i] = v
+			}
+
+			nr.Headers[k] = nvs
+		}
+	}
+
+	if r.ExpectedStatus != nil {
+		nr.ExpectedStatus = make([]int, len(r.ExpectedStatus))
+
+		for i, v := range r.ExpectedStatus {
+			nr.ExpectedStatus[i] = v
+		}
+	}
+
+	return true, nr
+}

vendor/github.com/koofr/go-httpclient/requestdata_upload.go

@@ -0,0 +1,62 @@
+package httpclient
+
+import (
+	"io"
+	"mime/multipart"
+	"net/http"
+)
+
+func (req *RequestData) UploadFile(fieldName string, fileName string, reader io.Reader) (err error) {
+	return req.UploadFileExtra(fieldName, fileName, reader, nil)
+}
+
+func (req *RequestData) UploadFileExtra(fieldName string, fileName string, reader io.Reader, extra map[string]string) (err error) {
+	r, w := io.Pipe()
+
+	writer := multipart.NewWriter(w)
+
+	go func() {
+		var err error
+
+		defer func() {
+			if err == nil {
+				w.Close()
+			}
+		}()
+
+		for k, v := range extra {
+			err = writer.WriteField(k, v)
+
+			if err != nil {
+				w.CloseWithError(err)
+				return
+			}
+		}
+
+		part, err := writer.CreateFormFile(fieldName, fileName)
+
+		if err != nil {
+			w.CloseWithError(err)
+			return
+		}
+
+		defer writer.Close()
+
+		_, err = io.Copy(part, reader)
+
+		if err != nil {
+			w.CloseWithError(err)
+			return
+		}
+	}()
+
+	req.ReqReader = r
+
+	if req.Headers == nil {
+		req.Headers = make(http.Header)
+	}
+
+	req.Headers.Set("Content-Type", writer.FormDataContentType())
+
+	return
+}

vendor/github.com/koofr/go-httpclient/transport.go

@@ -0,0 +1,29 @@
+package httpclient
+
+import (
+	"crypto/tls"
+	"net/http"
+)
+
+var HttpTransport = &http.Transport{
+	DisableCompression: true,
+	Proxy:              http.ProxyFromEnvironment,
+}
+
+var HttpClient = &http.Client{
+	Transport: HttpTransport,
+}
+
+var InsecureTlsConfig = &tls.Config{
+	InsecureSkipVerify: true,
+}
+
+var InsecureHttpTransport = &http.Transport{
+	TLSClientConfig:    InsecureTlsConfig,
+	DisableCompression: true,
+	Proxy:              http.ProxyFromEnvironment,
+}
+
+var InsecureHttpClient = &http.Client{
+	Transport: InsecureHttpTransport,
+}

vendor/github.com/koofr/go-httpclient/utils.go

@@ -0,0 +1,14 @@
+package httpclient
+
+import (
+	"net/url"
+	"strings"
+)
+
+func EscapePath(path string) string {
+	u := url.URL{
+		Path: path,
+	}
+
+	return strings.Replace(u.String(), "+", "%2b", -1)
+}

vendor/github.com/koofr/go-koofrclient/.gitignore

@@ -0,0 +1,11 @@
+/bin
+/pkg
+
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# developer specific
+*.sublime-workspace
+*.sublime-project

vendor/github.com/koofr/go-koofrclient/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Koofr
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/koofr/go-koofrclient/README.md

@@ -0,0 +1,15 @@
+go-koofrclient
+===========
+
+Go Koofr client.
+
+[![GoDoc](https://godoc.org/github.com/koofr/go-koofrclient?status.png)](https://godoc.org/github.com/koofr/go-koofrclient)
+
+## Install
+
+    go get github.com/koofr/go-koofrclient
+
+## Testing
+
+    go get -t
+    KOOFR_APIBASE="https://app.koofr.net" KOOFR_EMAIL="email@example.com" KOOFR_PASSWORD="yourpassword" go test

vendor/github.com/koofr/go-koofrclient/api_scheme.go

@@ -0,0 +1,217 @@
+package koofrclient
+
+import (
+	"path"
+)
+
+type TokenRequest struct {
+	Email    string `json:"email"`
+	Password string `json:"password"`
+}
+
+type Token struct {
+	Token string
+}
+
+type MountType string
+
+const (
+	MountDeviceType = "device"
+	MountExportType = "export"
+	MountImportType = "import"
+)
+
+type Mount struct {
+	Id          string           `json:"id"`
+	Name        string           `json:"name"`
+	Type        MountType        `json:"type"`
+	Origin      string           `json:"origin"`
+	SpaceTotal  int64            `json:"spaceTotal"`
+	SpaceUsed   int64            `json:"spaceUsed"`
+	Online      bool             `json:"online"`
+	Owner       MountUser        `json:"owner"`
+	Users       []MountUser      `json:"users"`
+	Groups      []MountGroup     `json:"groups"`
+	Version     int              `json:"version"`
+	Permissions MountPermissions `json:"permissions"`
+	IsPrimary   bool             `json:"isPrimary"`
+	IsShared    bool             `json:"isShared"`
+}
+
+type MountUser struct {
+	Id          string           `json:"id"`
+	Name        string           `json:"name"`
+	Email       string           `json:"email"`
+	Permissions MountPermissions `json:"permissions"`
+}
+
+type MountGroup struct {
+	Id          string           `json:"id"`
+	Name        string           `json:"name"`
+	Permissions MountPermissions `json:"permissions"`
+}
+
+type MountPermissions struct {
+	Read           bool `json:"READ"`
+	Write          bool `json:"write"`
+	Owner          bool `json:"OWNER"`
+	Mount          bool `json:"MOUNT"`
+	CreateReceiver bool `json:"CREATE_RECEIVER"`
+	CreateLink     bool `json:"CREATE_LINK"`
+	CreateAction   bool `json:"CREATE_ACTION"`
+	Comment        bool `json:"COMMENT"`
+}
+
+type DeviceProvider string
+
+const (
+	StorageHubProvider  = "storagehub"
+	StorageBlobProvider = "storageblob"
+)
+
+type Device struct {
+	Id         string `json:"id"`
+	ApiKey     string `json:"apiKey"`
+	Name       string `json:"name"`
+	Status     string `json:"status"`
+	SpaceTotal int64  `json:"spaceTotal"`
+	SpaceUsed  int64  `json:"spaceUsed"`
+	SpaceFree  int64  `json:"spaceFree"`
+	Version    int    `json:"version"`
+	Provider   struct {
+		Name string      `json:"name"`
+		Data interface{} `json:"data"`
+	} `json:"provider"`
+	ReadOnly    bool   `json:"readonly"`
+	RootMountId string `json:"rootMountId"`
+}
+
+type DeviceCreate struct {
+	Name         string         `json:"name"`
+	ProviderName DeviceProvider `json:"providerName"`
+}
+
+type DeviceUpdate struct {
+	Name string `json:"name"`
+}
+
+type FolderCreate struct {
+	Name string `json:"name"`
+}
+
+type FileCopy struct {
+	ToMountId string `json:"toMountId"`
+	TPath     string `json:"toPath"`
+}
+
+type FileMove struct {
+	ToMountId string `json:"toMountId"`
+	TPath     string `json:"toPath"`
+}
+
+type FileSpan struct {
+	Start int64
+	End   int64
+}
+
+type FileUpload struct {
+	Name string `json:"name"`
+}
+
+type PutFilter struct {
+	Modified          *int64
+	Size              *int64
+	Hash              *string
+	IgnoreNonExisting bool
+	NoRename          bool
+	ForceOverwrite    bool
+}
+
+type DeleteFilter struct {
+	Modified *int64
+	Size     *int64
+	Hash     *string
+	IfEmpty  bool
+}
+
+type FileInfo struct {
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Modified    int64  `json:"modified"`
+	Size        int64  `json:"size"`
+	ContentType string `json:"contentType"`
+	Path        string `json:"path"`
+	Hash        string `json:"hash"`
+}
+
+type FileTree struct {
+	FileInfo
+	Children []*FileTree `json:"children"`
+}
+
+func (tree *FileTree) Flatten() []FileInfo {
+	trees := []*FileTree{tree}
+	for i := 0; i < len(trees); i++ {
+		tree := trees[i]
+		for _, child := range tree.Children {
+			child.Name = path.Join(tree.Name, child.Name)
+			trees = append(trees, child)
+		}
+	}
+	infos := make([]FileInfo, len(trees))
+	for i, tree := range trees {
+		infos[i] = tree.FileInfo
+	}
+	return infos
+}
+
+type User struct {
+	Id        string `json:"id"`
+	FirstName string `json:"firstName"`
+	LastName  string `json:"lastName"`
+	Email     string `json:"email"`
+}
+
+type Shared struct {
+	Name        string    `json:name`
+	Type        MountType `json:type`
+	Modified    int64     `json:modified`
+	Size        int64     `json:size`
+	ContentType string    `json:contentType`
+	Hash        string    `json:hash`
+	Mount       Mount     `json:mount`
+	Link        Link      `json:link`
+	Receiver    Receiver  `json:receiver`
+}
+
+type Link struct {
+	Id               string `json:id`
+	Name             string `json:name`
+	Path             string `json:path`
+	Counter          int64  `json:counter`
+	Url              string `json:url`
+	ShortUrl         string `json:shortUrl`
+	Hash             string `json:hash`
+	Host             string `json:host`
+	HasPassword      bool   `json:hasPassword`
+	Password         string `json:password`
+	ValidFrom        int64  `json:validFrom`
+	ValidTo          int64  `json:validTo`
+	PasswordRequired bool   `json:passwordRequired`
+}
+
+type Receiver struct {
+	Id          string `json:id`
+	Name        string `json:name`
+	Path        string `json:path`
+	Counter     int64  `json:counter`
+	Url         string `json:url`
+	ShortUrl    string `json:shortUrl`
+	Hash        string `json:hash`
+	Host        string `json:host`
+	HasPassword bool   `json:hasPassword`
+	Password    string `json:password`
+	ValidFrom   int64  `json:validFrom`
+	ValidTo     int64  `json:validTo`
+	Alert       bool   `json:alert`
+}

vendor/github.com/koofr/go-koofrclient/client.go

@@ -0,0 +1,89 @@
+package koofrclient
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/koofr/go-httpclient"
+)
+
+type KoofrClient struct {
+	*httpclient.HTTPClient
+	token  string
+	userID string
+}
+
+func NewKoofrClient(baseUrl string, disableSecurity bool) *KoofrClient {
+	var httpClient *httpclient.HTTPClient
+
+	if disableSecurity {
+		httpClient = httpclient.Insecure()
+	} else {
+		httpClient = httpclient.New()
+	}
+
+	apiBaseUrl, _ := url.Parse(baseUrl)
+
+	httpClient.BaseURL = apiBaseUrl
+
+	httpClient.Headers.Set("User-Agent", "go koofrclient")
+
+	return &KoofrClient{
+		HTTPClient: httpClient,
+		token:      "",
+		userID:     "",
+	}
+}
+
+func (c *KoofrClient) SetUserAgent(ua string) {
+	c.Headers.Set("User-Agent", ua)
+}
+
+func (c *KoofrClient) SetToken(token string) {
+	c.token = token
+	c.HTTPClient.Headers.Set("Authorization", fmt.Sprintf("Token token=%s", token))
+}
+
+func (c *KoofrClient) GetToken() string {
+	return c.token
+}
+
+func (c *KoofrClient) SetUserID(userID string) {
+	c.userID = userID
+}
+
+func (c *KoofrClient) GetUserID() string {
+	return c.userID
+}
+
+func (c *KoofrClient) Authenticate(email string, password string) (err error) {
+	var tokenResponse Token
+
+	tokenRequest := TokenRequest{
+		Email:    email,
+		Password: password,
+	}
+
+	request := httpclient.RequestData{
+		Method:         "POST",
+		Path:           "/token",
+		Headers:        make(http.Header),
+		ExpectedStatus: []int{http.StatusOK},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       tokenRequest,
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &tokenResponse,
+	}
+
+	res, err := c.Request(&request)
+
+	if err != nil {
+		return
+	}
+
+	c.SetToken(tokenResponse.Token)
+	c.SetUserID(res.Header.Get("X-User-ID"))
+
+	return
+}

vendor/github.com/koofr/go-koofrclient/client_device.go

@@ -0,0 +1,84 @@
+package koofrclient
+
+import (
+	"github.com/koofr/go-httpclient"
+	"net/http"
+)
+
+func (c *KoofrClient) Devices() (devices []Device, err error) {
+	d := &struct {
+		Devices *[]Device
+	}{&devices}
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/devices",
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &d,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) DevicesCreate(name string, provider DeviceProvider) (device Device, err error) {
+	deviceCreate := DeviceCreate{name, provider}
+
+	request := httpclient.RequestData{
+		Method:         "POST",
+		Path:           "/api/v2/devices",
+		ExpectedStatus: []int{http.StatusCreated},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       deviceCreate,
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &device,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) DevicesDetails(deviceId string) (device Device, err error) {
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/devices/" + deviceId,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &device,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) DevicesUpdate(deviceId string, deviceUpdate DeviceUpdate) (err error) {
+	request := httpclient.RequestData{
+		Method:         "PUT",
+		Path:           "/api/v2/devices/" + deviceId,
+		ExpectedStatus: []int{http.StatusNoContent},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       deviceUpdate,
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) DevicesDelete(deviceId string) (err error) {
+	request := httpclient.RequestData{
+		Method:         "DELETE",
+		Path:           "/api/v2/devices/" + deviceId,
+		ExpectedStatus: []int{http.StatusNoContent},
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}

vendor/github.com/koofr/go-koofrclient/client_files.go

@@ -0,0 +1,294 @@
+package koofrclient
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"path"
+
+	"github.com/koofr/go-httpclient"
+)
+
+var ErrCannotOverwrite = fmt.Errorf("Can not overwrite (filter constraint fails)")
+var ErrCannotRemove = fmt.Errorf("Can not remove (filter constraint fails)")
+
+func (c *KoofrClient) FilesInfo(mountId string, path string) (info FileInfo, err error) {
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/mounts/" + mountId + "/files/info",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &info,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) FilesList(mountId string, basePath string) (files []FileInfo, err error) {
+	f := &struct {
+		Files *[]FileInfo
+	}{&files}
+
+	params := url.Values{}
+	params.Set("path", basePath)
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/mounts/" + mountId + "/files/list",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &f,
+	}
+
+	_, err = c.Request(&request)
+
+	if err != nil {
+		return
+	}
+
+	for i := range files {
+		files[i].Path = path.Join(basePath, files[i].Name)
+	}
+
+	return
+}
+
+func (c *KoofrClient) FilesTree(mountId string, path string) (tree FileTree, err error) {
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/mounts/" + mountId + "/files/tree",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &tree,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) FilesDelete(mountId string, path string) (err error) {
+	return c.filesDelete(mountId, path, nil)
+}
+
+func (c *KoofrClient) FilesDeleteIf(mountId string, path string, deleteFilter *DeleteFilter) (err error) {
+	return c.filesDelete(mountId, path, deleteFilter)
+}
+
+func (c *KoofrClient) filesDelete(mountId string, path string, deleteFilter *DeleteFilter) (err error) {
+	params := url.Values{}
+	params.Set("path", path)
+
+	if deleteFilter != nil {
+		if deleteFilter.Size != nil {
+			params.Set("removeIfSize", fmt.Sprintf("%d", *deleteFilter.Size))
+		}
+		if deleteFilter.Modified != nil {
+			params.Set("removeIfModified", fmt.Sprintf("%d", *deleteFilter.Modified))
+		}
+		if deleteFilter.Hash != nil {
+			params.Set("removeIfHash", fmt.Sprintf("%s", *deleteFilter.Hash))
+		}
+		if deleteFilter.IfEmpty {
+			params.Set("removeIfEmpty", "")
+		}
+	}
+
+	request := httpclient.RequestData{
+		Method:         "DELETE",
+		Path:           "/api/v2/mounts/" + mountId + "/files/remove",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	if err != nil {
+		switch err := err.(type) {
+		case httpclient.InvalidStatusError:
+			if err.Got == http.StatusConflict {
+				return ErrCannotRemove
+			}
+		default:
+			return err
+		}
+
+	}
+
+	return
+}
+
+func (c *KoofrClient) FilesNewFolder(mountId string, path string, name string) (err error) {
+	reqData := FolderCreate{name}
+
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "POST",
+		Path:           "/api/v2/mounts/" + mountId + "/files/folder",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK, http.StatusCreated},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       reqData,
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) FilesCopy(mountId string, path string, toMountId string, toPath string) (err error) {
+	reqData := FileCopy{toMountId, toPath}
+
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "PUT",
+		Path:           "/api/v2/mounts/" + mountId + "/files/copy",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       reqData,
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) FilesMove(mountId string, path string, toMountId string, toPath string) (err error) {
+	reqData := FileMove{toMountId, toPath}
+
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "PUT",
+		Path:           "/api/v2/mounts/" + mountId + "/files/move",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		ReqEncoding:    httpclient.EncodingJSON,
+		ReqValue:       reqData,
+		RespConsume:    true,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) FilesGetRange(mountId string, path string, span *FileSpan) (reader io.ReadCloser, err error) {
+	params := url.Values{}
+	params.Set("path", path)
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/content/api/v2/mounts/" + mountId + "/files/get",
+		Params:         params,
+		Headers:        make(http.Header),
+		ExpectedStatus: []int{http.StatusOK, http.StatusPartialContent},
+	}
+
+	if span != nil {
+		if span.End == -1 {
+			request.Headers.Set("Range", fmt.Sprintf("bytes=%d-", span.Start))
+		} else {
+			request.Headers.Set("Range", fmt.Sprintf("bytes=%d-%d", span.Start, span.End))
+		}
+	}
+
+	res, err := c.Request(&request)
+
+	if err != nil {
+		return
+	}
+
+	reader = res.Body
+
+	return
+}
+
+func (c *KoofrClient) FilesGet(mountId string, path string) (reader io.ReadCloser, err error) {
+	return c.FilesGetRange(mountId, path, nil)
+}
+
+func (c *KoofrClient) FilesPut(mountId string, path string, name string, reader io.Reader) (newName string, err error) {
+	info, err := c.FilesPutOptions(mountId, path, name, reader, nil)
+	return info.Name, err
+}
+
+func (c *KoofrClient) FilesPutOptions(mountId string, path string, name string, reader io.Reader, putFilter *PutFilter) (fileInfo *FileInfo, err error) {
+	params := url.Values{}
+	params.Set("path", path)
+	params.Set("filename", name)
+	params.Set("info", "true")
+
+	if putFilter != nil {
+		if putFilter.Size != nil {
+			params.Set("overwriteIfSize", fmt.Sprintf("%d", *putFilter.Size))
+		}
+		if putFilter.Modified != nil {
+			params.Set("overwriteIfModified", fmt.Sprintf("%d", *putFilter.Modified))
+		}
+		if putFilter.Hash != nil {
+			params.Set("overwriteIfHash", fmt.Sprintf("%s", *putFilter.Hash))
+		}
+		if putFilter.IgnoreNonExisting {
+			params.Set("overwriteIgnoreNonexisting", "")
+		}
+		if putFilter.NoRename {
+			params.Set("autorename", "false")
+		}
+		if putFilter.ForceOverwrite {
+			params.Set("overwrite", "true")
+		}
+	}
+
+	request := httpclient.RequestData{
+		Method:         "POST",
+		Path:           "/content/api/v2/mounts/" + mountId + "/files/put",
+		Params:         params,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &fileInfo,
+	}
+
+	err = request.UploadFile("file", "dummy", reader)
+
+	if err != nil {
+		return
+	}
+
+	_, err = c.Request(&request)
+
+	if err != nil {
+
+		switch err := err.(type) {
+		case httpclient.InvalidStatusError:
+			if err.Got == http.StatusConflict {
+				return nil, ErrCannotOverwrite
+			}
+		default:
+			return nil, err
+		}
+	}
+
+	return
+}

vendor/github.com/koofr/go-koofrclient/client_mount.go

@@ -0,0 +1,38 @@
+package koofrclient
+
+import (
+	"github.com/koofr/go-httpclient"
+	"net/http"
+)
+
+func (c *KoofrClient) Mounts() (mounts []Mount, err error) {
+	d := &struct {
+		Mounts *[]Mount
+	}{&mounts}
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/mounts",
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &d,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}
+
+func (c *KoofrClient) MountsDetails(mountId string) (mount Mount, err error) {
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/mounts/" + mountId,
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &mount,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}

vendor/github.com/koofr/go-koofrclient/client_shared.go

@@ -0,0 +1,25 @@
+package koofrclient
+
+import (
+	"net/http"
+
+	"github.com/koofr/go-httpclient"
+)
+
+func (c *KoofrClient) Shared() (shared []Shared, err error) {
+	d := &struct {
+		Files *[]Shared
+	}{&shared}
+
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/shared",
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &d,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}

vendor/github.com/koofr/go-koofrclient/client_user.go

@@ -0,0 +1,20 @@
+package koofrclient
+
+import (
+	"github.com/koofr/go-httpclient"
+	"net/http"
+)
+
+func (c *KoofrClient) UserInfo() (user User, err error) {
+	request := httpclient.RequestData{
+		Method:         "GET",
+		Path:           "/api/v2/user",
+		ExpectedStatus: []int{http.StatusOK},
+		RespEncoding:   httpclient.EncodingJSON,
+		RespValue:      &user,
+	}
+
+	_, err = c.Request(&request)
+
+	return
+}

vendor/github.com/t3rm1n4l/go-mega/mega.go

@@ -894,6 +894,11 @@ func (m *Mega) NewDownload(src *Node) (*Download, error) {
 		return nil, err
 	}
 
+	// DownloadResp has an embedded error in it for some reason
+	if res[0].Err != 0 {
+		return nil, parseError(res[0].Err)
+	}
+
 	_, err = decryptAttr(key, []byte(res[0].Attr))
 	if err != nil {
 		return nil, err