operations

package
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 Go to latest Published: Jul 3, 2022 License: MIT Imports: 43 Imported by: 0

Documentation

Overview

Package operations does generic operations on filesystems and objects

Index

Constants

This section is empty.

Variables

View Source 
var SyncPrintf = func(format string, a ...interface{}) {
	fmt.Printf(format, a...)
}

SyncPrintf is a global var holding the Printf function used in syncFprintf so that it can be overridden Note, despite name, does not provide sync and should not be called directly Call syncFprintf, which provides sync

Functions

func BackupDir 

func BackupDir(ctx context.Context, fdst fs.Fs, fsrc fs.Fs, srcFileName string) (backupDir fs.Fs, err error)

BackupDir returns the correctly configured --backup-dir

func CanServerSideMove 

func CanServerSideMove(fdst fs.Fs) bool

CanServerSideMove returns true if fdst support server-side moves or server-side copies

Some remotes simulate rename by server-side copy and delete, so include remotes that implements either Mover or Copier.

func Cat 

func Cat(ctx context.Context, f fs.Fs, w io.Writer, offset, count int64) error

Cat any files to the io.Writer

if offset == 0 it will be ignored if offset > 0 then the file will be seeked to that offset if offset < 0 then the file will be seeked that far from the end

if count < 0 then it will be ignored if count >= 0 then only that many characters will be output

func Check 

func Check(ctx context.Context, opt *CheckOpt) error

Check the files in fsrc and fdst according to Size and hash

func CheckDownload 

func CheckDownload(ctx context.Context, opt *CheckOpt) error

CheckDownload checks the files in fsrc and fdst according to Size and the actual contents of the files.

func CheckEqualReaders 

func CheckEqualReaders(in1, in2 io.Reader) (differ bool, err error)

CheckEqualReaders checks to see if in1 and in2 have the same content when read.

it returns true if differences were found

func CheckFn 

func CheckFn(ctx context.Context, opt *CheckOpt) error

CheckFn checks the files in fsrc and fdst according to Size and hash using checkFunction on each file to check the hashes.

checkFunction sees if dst and src are identical

it returns true if differences were found it also returns whether it couldn't be hashed

func CheckHashes 

func CheckHashes(ctx context.Context, src fs.ObjectInfo, dst fs.Object) (equal bool, ht hash.Type, err error)

CheckHashes checks the two files to see if they have common known hash types and compares them

Returns

equal - which is equality of the hashes

hash - the HashType. This is HashNone if either of the hashes were unset or a compatible hash couldn't be found.

err - may return an error which will already have been logged

If an error is returned it will return equal as false

func CheckIdenticalDownload 

func CheckIdenticalDownload(ctx context.Context, dst, src fs.Object) (differ bool, err error)

CheckIdenticalDownload checks to see if dst and src are identical by reading all their bytes if necessary.

it returns true if differences were found

func CheckSum 

func CheckSum(ctx context.Context, fsrc, fsum fs.Fs, sumFile string, hashType hash.Type, opt *CheckOpt, download bool) error

CheckSum checks filesystem hashes against a SUM file

func CleanUp 

func CleanUp(ctx context.Context, f fs.Fs) error

CleanUp removes the trash for the Fs

func CommonHash 

func CommonHash(ctx context.Context, fa, fb fs.Info) (hash.Type, *fs.HashesOption)

CommonHash returns a single hash.Type and a HashOption with that type which is in common between the two fs.Fs.

func CompareOrCopyDest 

func CompareOrCopyDest(ctx context.Context, fdst fs.Fs, dst, src fs.Object, CompareOrCopyDest []fs.Fs, backupDir fs.Fs) (NoNeedTransfer bool, err error)

CompareOrCopyDest checks --compare-dest and --copy-dest to see if src does not need to be copied

Returns True if src does not need to be copied

func ConfigMaxDepth 

func ConfigMaxDepth(ctx context.Context, recursive bool) int

ConfigMaxDepth returns the depth to use for a recursive or non recursive listing.

func Copy 

func Copy(ctx context.Context, f fs.Fs, dst fs.Object, remote string, src fs.Object) (newDst fs.Object, err error)

Copy src object to dst or f if nil. If dst is nil then it uses remote as the name of the new object.

It returns the destination object if possible. Note that this may be nil.

func CopyFile 

func CopyFile(ctx context.Context, fdst fs.Fs, fsrc fs.Fs, dstFileName string, srcFileName string) (err error)

CopyFile moves a single file possibly to a new name

func CopyURL 

func CopyURL(ctx context.Context, fdst fs.Fs, dstFileName string, url string, autoFilename, dstFileNameFromHeader bool, noClobber bool) (dst fs.Object, err error)

CopyURL copies the data from the url to (fdst, dstFileName)

func CopyURLToWriter 

func CopyURLToWriter(ctx context.Context, url string, out io.Writer) (err error)

CopyURLToWriter copies the data from the url to the io.Writer supplied

func Count 

func Count(ctx context.Context, f fs.Fs) (objects int64, size int64, sizelessObjects int64, err error)

Count counts the objects and their sizes in the Fs

Obeys includes and excludes

func CountString 

func CountString(count int64, humanReadable bool) string

CountString make string representation of count for output

Optional human-readable format including a decimal suffix

func CountStringField 

func CountStringField(count int64, humanReadable bool, rawWidth int) string

CountStringField make string representation of count for output in fixed width field

Similar to SizeStringField, but human readable with decimal prefix and field width 8 since there is no 'i' in the decimal prefix symbols (e.g. "999.999E")

func Deduplicate 

func Deduplicate(ctx context.Context, f fs.Fs, mode DeduplicateMode, byHash bool) error

Deduplicate interactively finds duplicate files and offers to delete all but one or rename them to be different. Only useful with Google Drive which can have duplicate file names.

func Delete 

func Delete(ctx context.Context, f fs.Fs) error

Delete removes all the contents of a container. Unlike Purge, it obeys includes and excludes.

func DeleteFile 

func DeleteFile(ctx context.Context, dst fs.Object) (err error)

DeleteFile deletes a single file respecting --dry-run and accumulating stats and errors.

If useBackupDir is set and --backup-dir is in effect then it moves the file to there instead of deleting

func DeleteFileWithBackupDir 

func DeleteFileWithBackupDir(ctx context.Context, dst fs.Object, backupDir fs.Fs) (err error)

DeleteFileWithBackupDir deletes a single file respecting --dry-run and accumulating stats and errors.

If backupDir is set then it moves the file to there instead of deleting

func DeleteFiles 

func DeleteFiles(ctx context.Context, toBeDeleted fs.ObjectsChan) error

DeleteFiles removes all the files passed in the channel

func DeleteFilesWithBackupDir 

func DeleteFilesWithBackupDir(ctx context.Context, toBeDeleted fs.ObjectsChan, backupDir fs.Fs) error

DeleteFilesWithBackupDir removes all the files passed in the channel

If backupDir is set the files will be placed into that directory instead of being deleted.

func DirMove 

func DirMove(ctx context.Context, f fs.Fs, srcRemote, dstRemote string) (err error)

DirMove renames srcRemote to dstRemote

It does this by loading the directory tree into memory (using ListR if available) and doing renames in parallel.

func Equal 

func Equal(ctx context.Context, src fs.ObjectInfo, dst fs.Object) bool

Equal checks to see if the src and dst objects are equal by looking at size, mtime and hash

If the src and dst size are different then it is considered to be not equal. If --size-only is in effect then this is the only check that is done. If --ignore-size is in effect then this check is skipped and the files are considered the same size.

If the size is the same and the mtime is the same then it is considered to be equal. This check is skipped if using --checksum.

If the size is the same and mtime is different, unreadable or --checksum is set and the hash is the same then the file is considered to be equal. In this case the mtime on the dst is updated if --checksum is not set.

Otherwise the file is considered to be not equal including if there were errors reading info.

func GetCompareDest 

func GetCompareDest(ctx context.Context) (CompareDest []fs.Fs, err error)

GetCompareDest sets up --compare-dest

func GetCopyDest 

func GetCopyDest(ctx context.Context, fdst fs.Fs) (CopyDest []fs.Fs, err error)

GetCopyDest sets up --copy-dest

func HashLister 

func HashLister(ctx context.Context, ht hash.Type, outputBase64 bool, downloadFlag bool, f fs.Fs, w io.Writer) error

HashLister does an md5sum equivalent for the hash type passed in Updated to handle both standard hex encoding and base64 Updated to perform multiple hashes concurrently

func HashSumStream 

func HashSumStream(ht hash.Type, outputBase64 bool, in io.ReadCloser, w io.Writer) error

HashSumStream outputs a line compatible with md5sum to w based on the input stream in and the hash type ht passed in. If outputBase64 is set then the hash will be base64 instead of hexadecimal.

func List 

func List(ctx context.Context, f fs.Fs, w io.Writer) error

List the Fs to the supplied writer

Shows size and path - obeys includes and excludes

Lists in parallel which may get them out of order

func ListDir 

func ListDir(ctx context.Context, f fs.Fs, w io.Writer) error

ListDir lists the directories/buckets/containers in the Fs to the supplied writer

func ListFn 

func ListFn(ctx context.Context, f fs.Fs, fn func(fs.Object)) error

ListFn lists the Fs to the supplied function

Lists in parallel which may get them out of order

func ListJSON 

func ListJSON(ctx context.Context, fsrc fs.Fs, remote string, opt *ListJSONOpt, callback func(*ListJSONItem) error) error

ListJSON lists fsrc using the options in opt calling callback for each item

func ListLong 

func ListLong(ctx context.Context, f fs.Fs, w io.Writer) error

ListLong lists the Fs to the supplied writer

Shows size, mod time and path - obeys includes and excludes

Lists in parallel which may get them out of order

func Mkdir 

func Mkdir(ctx context.Context, f fs.Fs, dir string) error

Mkdir makes a destination directory or container

func Move 

func Move(ctx context.Context, fdst fs.Fs, dst fs.Object, remote string, src fs.Object) (newDst fs.Object, err error)

Move src object to dst or fdst if nil. If dst is nil then it uses remote as the name of the new object.

Note that you must check the destination does not exist before calling this and pass it as dst. If you pass dst=nil and the destination does exist then this may create duplicates or return errors.

It returns the destination object if possible. Note that this may be nil.

func MoveBackupDir 

func MoveBackupDir(ctx context.Context, backupDir fs.Fs, dst fs.Object) (err error)

MoveBackupDir moves a file to the backup dir

func MoveFile 

func MoveFile(ctx context.Context, fdst fs.Fs, fsrc fs.Fs, dstFileName string, srcFileName string) (err error)

MoveFile moves a single file possibly to a new name

func NeedTransfer 

func NeedTransfer(ctx context.Context, dst, src fs.Object) bool

NeedTransfer checks to see if src needs to be copied to dst using the current config.

Returns a flag which indicates whether the file needs to be transferred or not.

func NewReOpen 

func NewReOpen(ctx context.Context, src fs.Object, maxTries int, options ...fs.OpenOption) (rc io.ReadCloser, err error)

NewReOpen makes a handle which will reopen itself and seek to where it was on errors

If hashOption is set this will be applied when reading from the start

If rangeOption is set then this will applied when reading from the start, and updated on retries.

func Overlapping 

func Overlapping(fdst, fsrc fs.Info) bool

Overlapping returns true if fdst and fsrc point to the same underlying Fs and they overlap.

func OverlappingFilterCheck 

func OverlappingFilterCheck(ctx context.Context, fdst fs.Fs, fsrc fs.Fs) bool

OverlappingFilterCheck returns true if fdst and fsrc point to the same underlying Fs and they overlap without fdst being excluded by any filter rule. 

func PublicLink(ctx context.Context, f fs.Fs, remote string, expire fs.Duration, unlink bool) (string, error)

PublicLink adds a "readable by anyone with link" permission on the given file or folder.

func Purge 

func Purge(ctx context.Context, f fs.Fs, dir string) (err error)

Purge removes a directory and all of its contents

func Rcat 

func Rcat(ctx context.Context, fdst fs.Fs, dstFileName string, in io.ReadCloser, modTime time.Time) (dst fs.Object, err error)

Rcat reads data from the Reader until EOF and uploads it to a file on remote

func RcatSize 

func RcatSize(ctx context.Context, fdst fs.Fs, dstFileName string, in io.ReadCloser, size int64, modTime time.Time) (dst fs.Object, err error)

RcatSize reads data from the Reader until EOF and uploads it to a file on remote. Pass in size >=0 if known, <0 if not known

func Retry 

func Retry(ctx context.Context, o interface{}, maxTries int, fn func() error) (err error)

Retry runs fn up to maxTries times if it returns a retriable error

func Rmdir 

func Rmdir(ctx context.Context, f fs.Fs, dir string) error

Rmdir removes a container but not if not empty

func Rmdirs 

func Rmdirs(ctx context.Context, f fs.Fs, dir string, leaveRoot bool) error

Rmdirs removes any empty directories (or directories only containing empty directories) under f, including f.

Rmdirs obeys the filters

func Same 

func Same(fdst, fsrc fs.Info) bool

Same returns true if fdst and fsrc point to the same underlying Fs

func SameConfig 

func SameConfig(fdst, fsrc fs.Info) bool

SameConfig returns true if fdst and fsrc are using the same config file entry

func SameConfigArr 

func SameConfigArr(fdst fs.Info, fsrcs []fs.Fs) bool

SameConfigArr returns true if any of []fsrcs has same config file entry with fdst

func SameDir 

func SameDir(fdst, fsrc fs.Info) bool

SameDir returns true if fdst and fsrc point to the same underlying Fs and they are the same directory.

func SameObject 

func SameObject(src, dst fs.Object) bool

SameObject returns true if src and dst could be pointing to the same object.

func SameRemoteType 

func SameRemoteType(fdst, fsrc fs.Info) bool

SameRemoteType returns true if fdst and fsrc are the same type

func SetTier 

func SetTier(ctx context.Context, fsrc fs.Fs, tier string) error

SetTier changes tier of object in remote

func SizeString 

func SizeString(size int64, humanReadable bool) string

SizeString make string representation of size for output

Optional human-readable format including a binary suffix

func SizeStringField 

func SizeStringField(size int64, humanReadable bool, rawWidth int) string

SizeStringField make string representation of size for output in fixed width field

Optional human-readable format including a binary suffix Argument rawWidth is used to format field with of raw value. When humanReadable option the width is hard coded to 9, since SizeSuffix strings have precision 3 and longest value will be "999.999Ei". This way the width can be optimized depending to the humanReadable option. To always use a longer width the return value can always be fed into another format string with a specific field with.

func SkipDestructive 

func SkipDestructive(ctx context.Context, subject interface{}, action string) (skip bool)

SkipDestructive should be called whenever rclone is about to do an destructive operation.

It will check the --dry-run flag and it will ask the user if the --interactive flag is set.

subject should be the object or directory in use

action should be a descriptive word or short phrase

Together they should make sense in this sentence: "Rclone is about to action subject".

func SuffixName 

func SuffixName(ctx context.Context, remote string) string

SuffixName adds the current --suffix to the remote, obeying --suffix-keep-extension if set

func TouchDir 

func TouchDir(ctx context.Context, f fs.Fs, remote string, t time.Time, recursive bool) error

TouchDir touches every file in directory with time t

func TryRmdir 

func TryRmdir(ctx context.Context, f fs.Fs, dir string) error

TryRmdir removes a container but not if not empty. It doesn't count errors but may return one.

Types

type CheckOpt 

type CheckOpt struct {
	Fdst, Fsrc   fs.Fs     // fses to check
	Check        checkFn   // function to use for checking
	OneWay       bool      // one way only?
	Combined     io.Writer // a file with file names with leading sigils
	MissingOnSrc io.Writer // files only in the destination
	MissingOnDst io.Writer // files only in the source
	Match        io.Writer // matching files
	Differ       io.Writer // differing files
	Error        io.Writer // files with errors of some kind
}

CheckOpt contains options for the Check functions

type DeduplicateMode 

type DeduplicateMode int

DeduplicateMode is how the dedupe command chooses what to do 

const (
	DeduplicateInteractive DeduplicateMode = iota // interactively ask the user
	DeduplicateSkip                               // skip all conflicts
	DeduplicateFirst                              // choose the first object
	DeduplicateNewest                             // choose the newest object
	DeduplicateOldest                             // choose the oldest object
	DeduplicateRename                             // rename the objects
	DeduplicateLargest                            // choose the largest object
	DeduplicateSmallest                           // choose the smallest object
	DeduplicateList                               // list duplicates only
)

Deduplicate modes

func (*DeduplicateMode) Set 

func (x *DeduplicateMode) Set(s string) error

Set a DeduplicateMode from a string

func (DeduplicateMode) String 

func (x DeduplicateMode) String() string

func (*DeduplicateMode) Type 

func (x *DeduplicateMode) Type() string

Type of the value

type FsInfo 

type FsInfo struct {
	// Name of the remote (as passed into NewFs)
	Name string

	// Root of the remote (as passed into NewFs)
	Root string

	// String returns a description of the FS
	String string

	// Precision of the ModTimes in this Fs in Nanoseconds
	Precision time.Duration

	// Returns the supported hash types of the filesystem
	Hashes []string

	// Features returns the optional features of this Fs
	Features map[string]bool

	// MetadataInfo returns info about the metadata for this backend
	MetadataInfo *fs.MetadataInfo
}

FsInfo provides information about a remote

func GetFsInfo 

func GetFsInfo(f fs.Fs) *FsInfo

GetFsInfo gets the information (FsInfo) about a given Fs

type HashSums 

type HashSums map[string]string

HashSums represents a parsed SUM file

func ParseSumFile 

func ParseSumFile(ctx context.Context, sumFile fs.Object) (HashSums, error)

ParseSumFile parses a hash SUM file and returns hashes as a map

type ListFormat 

type ListFormat struct {
	// contains filtered or unexported fields
}

ListFormat defines files information print format

func (*ListFormat) AddEncrypted 

func (l *ListFormat) AddEncrypted()

AddEncrypted adds the encrypted path to file to output

func (*ListFormat) AddHash 

func (l *ListFormat) AddHash(ht hash.Type)

AddHash adds the hash of the type given to the output

func (*ListFormat) AddID 

func (l *ListFormat) AddID()

AddID adds file's ID to the output if known

func (*ListFormat) AddMetadata 

func (l *ListFormat) AddMetadata()

AddMetadata adds file's Metadata to the output if known

func (*ListFormat) AddMimeType 

func (l *ListFormat) AddMimeType()

AddMimeType adds file's MimeType to the output if known

func (*ListFormat) AddModTime 

func (l *ListFormat) AddModTime()

AddModTime adds file's Mod Time to output

func (*ListFormat) AddOrigID 

func (l *ListFormat) AddOrigID()

AddOrigID adds file's Original ID to the output if known

func (*ListFormat) AddPath 

func (l *ListFormat) AddPath()

AddPath adds path to file to output

func (*ListFormat) AddSize 

func (l *ListFormat) AddSize()

AddSize adds file's size to output

func (*ListFormat) AddTier 

func (l *ListFormat) AddTier()

AddTier adds file's Tier to the output if known

func (*ListFormat) AppendOutput 

func (l *ListFormat) AppendOutput(functionToAppend func(item *ListJSONItem) string)

AppendOutput adds string generated by specific function to printed output

func (*ListFormat) Format 

func (l *ListFormat) Format(entry *ListJSONItem) (result string)

Format prints information about the DirEntry in the format defined

func (*ListFormat) SetAbsolute 

func (l *ListFormat) SetAbsolute(absolute bool)

SetAbsolute prints a leading slash in front of path names

func (*ListFormat) SetCSV 

func (l *ListFormat) SetCSV(useCSV bool)

SetCSV defines if the output should be csv

Note that you should call SetSeparator before this if you want a custom separator

func (*ListFormat) SetDirSlash 

func (l *ListFormat) SetDirSlash(dirSlash bool)

SetDirSlash defines if slash should be printed

func (*ListFormat) SetOutput 

func (l *ListFormat) SetOutput(output []func(entry *ListJSONItem) string)

SetOutput sets functions used to create files information

func (*ListFormat) SetSeparator 

func (l *ListFormat) SetSeparator(separator string)

SetSeparator changes separator in struct

type ListJSONItem 

type ListJSONItem struct {
	Path          string
	Name          string
	EncryptedPath string `json:",omitempty"`
	Encrypted     string `json:",omitempty"`
	Size          int64
	MimeType      string    `json:",omitempty"`
	ModTime       Timestamp //`json:",omitempty"`
	IsDir         bool
	Hashes        map[string]string `json:",omitempty"`
	ID            string            `json:",omitempty"`
	OrigID        string            `json:",omitempty"`
	Tier          string            `json:",omitempty"`
	IsBucket      bool              `json:",omitempty"`
	Metadata      fs.Metadata       `json:",omitempty"`
}

ListJSONItem in the struct which gets marshalled for each line

func StatJSON 

func StatJSON(ctx context.Context, fsrc fs.Fs, remote string, opt *ListJSONOpt) (item *ListJSONItem, err error)

StatJSON returns a single JSON stat entry for the fsrc, remote path

The item returned may be nil if it is not found or excluded with DirsOnly/FilesOnly

type ListJSONOpt 

type ListJSONOpt struct {
	Recurse       bool     `json:"recurse"`
	NoModTime     bool     `json:"noModTime"`
	NoMimeType    bool     `json:"noMimeType"`
	ShowEncrypted bool     `json:"showEncrypted"`
	ShowOrigIDs   bool     `json:"showOrigIDs"`
	ShowHash      bool     `json:"showHash"`
	DirsOnly      bool     `json:"dirsOnly"`
	FilesOnly     bool     `json:"filesOnly"`
	Metadata      bool     `json:"metadata"`
	HashTypes     []string `json:"hashTypes"` // hash types to show if ShowHash is set, e.g. "MD5", "SHA-1"
}

ListJSONOpt describes the options for ListJSON

type OverrideRemote 

type OverrideRemote struct {
	fs.ObjectInfo
	// contains filtered or unexported fields
}

OverrideRemote is a wrapper to override the Remote for an ObjectInfo

func NewOverrideRemote 

func NewOverrideRemote(oi fs.ObjectInfo, remote string) *OverrideRemote

NewOverrideRemote returns an OverrideRemoteObject which will return the remote specified

func (*OverrideRemote) GetTier 

func (o *OverrideRemote) GetTier() string

GetTier returns storage tier or class of the Object

func (*OverrideRemote) ID 

func (o *OverrideRemote) ID() string

ID returns the ID of the Object if known, or "" if not

func (*OverrideRemote) Metadata 

func (o *OverrideRemote) Metadata(ctx context.Context) (fs.Metadata, error)

Metadata returns metadata for an object

It should return nil if there is no Metadata

func (*OverrideRemote) MimeType 

func (o *OverrideRemote) MimeType(ctx context.Context) string

MimeType returns the mime type of the underlying object or "" if it can't be worked out

func (*OverrideRemote) Remote 

func (o *OverrideRemote) Remote() string

Remote returns the overridden remote name

func (*OverrideRemote) UnWrap 

func (o *OverrideRemote) UnWrap() fs.Object

UnWrap returns the Object that this Object is wrapping or nil if it isn't wrapping anything

type ReOpen 

type ReOpen struct {
	// contains filtered or unexported fields
}

ReOpen is a wrapper for an object reader which reopens the stream on error

func (*ReOpen) Close 

func (h *ReOpen) Close() error

Close the stream

func (*ReOpen) Read 

func (h *ReOpen) Read(p []byte) (n int, err error)

Read bytes retrying as necessary

type Timestamp 

type Timestamp struct {
	When   time.Time
	Format string
}

Timestamp a time in the provided format

func (Timestamp) MarshalJSON 

func (t Timestamp) MarshalJSON() (out []byte, err error)

MarshalJSON turns a Timestamp into JSON

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