download

Documentation

Index

• Constants
• type DownloadingDir
  • func CreateDownloadingDir(filename string) (*DownloadingDir, error)
  • func (directory *DownloadingDir) Add(node *dir.FsNode, relpath string, persist func(path string) error) error
  • func (directory *DownloadingDir) Seal() error
• type DownloadingFile
  • func CreateDownloadingFile(filename string, root common.Hash, size int64) (*DownloadingFile, error)
  • func (file *DownloadingFile) Close() error
  • func (file *DownloadingFile) Metadata() *Metadata
  • func (file *DownloadingFile) Seal() error
  • func (file *DownloadingFile) Write(data []byte) error
• type Metadata
  • func DeserializeMedata(encoded []byte) (*Metadata, error)
  • func LoadMetadata(file *os.File) (*Metadata, error)
  • func NewMetadata(root common.Hash, size int64) *Metadata
  • func (md *Metadata) Extend(file *os.File) error
  • func (md *Metadata) Serialize() []byte
  • func (md *Metadata) Write(file *os.File, data []byte) error

Constants

const MetadataSize = common.HashLength + 8 + 8

Types

type DownloadingDir

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

func CreateDownloadingDir

func CreateDownloadingDir(filename string) (*DownloadingDir, error)

CreateDownloadingDir creates a temporary downloading directory by renaming the existing directory if it exists or by creating a new one if it doesn't. It ensures files are stored in a safe temporary directory.

func (*DownloadingDir) Add

func (directory *DownloadingDir) Add(node *dir.FsNode, relpath string, persist func(path string) error) error

Add adds a file, directory, or symbolic link to the downloading directory.

func (*DownloadingDir) Seal

func (directory *DownloadingDir) Seal() error

Seal finalizes the downloading process by renaming the temporary directory back to its original name. It should be called after all files have been added to the directory.

type DownloadingFile

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

func CreateDownloadingFile

func CreateDownloadingFile(filename string, root common.Hash, size int64) (*DownloadingFile, error)

func (*DownloadingFile) Close

func (file *DownloadingFile) Close() error

func (*DownloadingFile) Metadata

func (file *DownloadingFile) Metadata() *Metadata

func (*DownloadingFile) Seal

func (file *DownloadingFile) Seal() error

func (*DownloadingFile) Write

func (file *DownloadingFile) Write(data []byte) error

type Metadata

type Metadata struct {
	Root   common.Hash // file merkle root
	Size   int64       // file size to download
	Offset int64       // offset to write for the next time
}

func DeserializeMedata

func DeserializeMedata(encoded []byte) (*Metadata, error)

func LoadMetadata

func LoadMetadata(file *os.File) (*Metadata, error)

func NewMetadata

func NewMetadata(root common.Hash, size int64) *Metadata

func (*Metadata) Extend

func (md *Metadata) Extend(file *os.File) error

func (*Metadata) Serialize

func (md *Metadata) Serialize() []byte

func (*Metadata) Write

func (md *Metadata) Write(file *os.File, data []byte) error