b2

Documentation

Overview

Package b2 provides an interface to the Backblaze B2 object storage system

Index

• func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error)
• type Fs
  • func (f *Fs) CleanUp() error
  • func (f *Fs) Features() *fs.Features
  • func (f *Fs) Hashes() hash.Set
  • func (f *Fs) List(dir string) (entries fs.DirEntries, err error)
  • func (f *Fs) ListR(dir string, callback fs.ListRCallback) (err error)
  • func (f *Fs) Mkdir(dir string) error
  • func (f *Fs) Name() string
  • func (f *Fs) NewObject(remote string) (fs.Object, error)
  • func (f *Fs) Precision() time.Duration
  • func (f *Fs) Purge() error
  • func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error)
  • func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error)
  • func (f *Fs) Rmdir(dir string) error
  • func (f *Fs) Root() string
  • func (f *Fs) String() string
• type Object
  • func (o *Object) Fs() fs.Info
  • func (o *Object) Hash(t hash.Type) (string, error)
  • func (o *Object) ID() string
  • func (o *Object) MimeType() string
  • func (o *Object) ModTime() (result time.Time)
  • func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error)
  • func (o *Object) Remote() string
  • func (o *Object) Remove() error
  • func (o *Object) SetModTime(modTime time.Time) error
  • func (o *Object) Size() int64
  • func (o *Object) Storable() bool
  • func (o *Object) String() string
  • func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error)
• type Options

Functions

func NewFs

func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error)

NewFs constructs an Fs from the path, bucket:path

Types

type Fs

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

Fs represents a remote b2 server

func (*Fs) CleanUp

func (f *Fs) CleanUp() error

CleanUp deletes all the hidden files.

func (*Fs) Features

func (f *Fs) Features() *fs.Features

Features returns the optional features of this Fs

func (*Fs) Hashes

func (f *Fs) Hashes() hash.Set

Hashes returns the supported hash sets.

func (*Fs) List

func (f *Fs) List(dir string) (entries fs.DirEntries, err error)

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 (*Fs) ListR

func (f *Fs) ListR(dir string, callback fs.ListRCallback) (err error)

ListR lists the objects and directories of the Fs starting from dir recursively into out.

dir should be "" to start from the root, and should not have trailing slashes.

This should return ErrDirNotFound if the directory isn't found.

It should call callback for each tranche of entries read. These need not be returned in any particular order. If callback returns an error then the listing will stop immediately.

Don't implement this unless you have a more efficient way of listing recursively that doing a directory traversal.

func (*Fs) Mkdir

func (f *Fs) Mkdir(dir string) error

Mkdir creates the bucket if it doesn't exist

func (*Fs) Name

func (f *Fs) Name() string

Name of the remote (as passed into NewFs)

func (*Fs) NewObject

func (f *Fs) NewObject(remote string) (fs.Object, error)

NewObject finds the Object at remote. If it can't be found it returns the error fs.ErrorObjectNotFound.

func (*Fs) Precision

func (f *Fs) Precision() time.Duration

Precision of the remote

func (*Fs) Purge

func (f *Fs) Purge() error

Purge deletes all the files and directories including the old versions.

func (*Fs) Put

func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error)

Put the object into the bucket

Copy the reader in to the new object which is returned

The new object may have been created if an error is returned

func (*Fs) PutStream

func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error)

PutStream uploads to the remote path with the modTime given of indeterminate size

func (*Fs) Rmdir

func (f *Fs) Rmdir(dir string) error

Rmdir deletes the bucket if the fs is at the root

Returns an error if it isn't empty

func (*Fs) Root

func (f *Fs) Root() string

Root of the remote (as passed into NewFs)

func (*Fs) String

func (f *Fs) String() string

String converts this Fs to a string

type Object

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

Object describes a b2 object

func (*Object) Fs

func (o *Object) Fs() fs.Info

Fs returns the parent Fs

func (*Object) Hash

func (o *Object) Hash(t hash.Type) (string, error)

Hash returns the Sha-1 of an object returning a lowercase hex string

func (*Object) ID

func (o *Object) ID() string

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

func (*Object) MimeType

func (o *Object) MimeType() string

MimeType of an Object if known, "" otherwise

func (*Object) ModTime

func (o *Object) ModTime() (result time.Time)

ModTime returns the modification time of the object

It attempts to read the objects mtime and if that isn't present the LastModified returned in the http headers

SHA-1 will also be updated once the request has completed.

func (*Object) Open

func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error)

Open an object for read

func (*Object) Remote

func (o *Object) Remote() string

Remote returns the remote path

func (*Object) Remove

func (o *Object) Remove() error

Remove an object

func (*Object) SetModTime

func (o *Object) SetModTime(modTime time.Time) error

SetModTime sets the modification time of the local fs object

func (*Object) Size

func (o *Object) Size() int64

Size returns the size of an object in bytes

func (*Object) Storable

func (o *Object) Storable() bool

Storable returns if this object is storable

func (*Object) String

func (o *Object) String() string

Return a string version

func (*Object) Update

func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error)

Update the object with the contents of the io.Reader, modTime and size

The new object may have been created if an error is returned

type Options

type Options struct {
	Account         string        `config:"account"`
	Key             string        `config:"key"`
	Endpoint        string        `config:"endpoint"`
	TestMode        string        `config:"test_mode"`
	Versions        bool          `config:"versions"`
	HardDelete      bool          `config:"hard_delete"`
	UploadCutoff    fs.SizeSuffix `config:"upload_cutoff"`
	ChunkSize       fs.SizeSuffix `config:"chunk_size"`
	DisableCheckSum bool          `config:"disable_checksum"`
	DownloadURL     string        `config:"download_url"`
}

Options defines the configuration for this backend