file

type EtagEncoder interface {
	Encode([]byte) (string, error)
}

type Storage interface {
	// Move moves file from src to local storage.
	Move(id, src string) (hashPath string, err error)
	// Copy copies file from src to local storage.
	Copy(id, src string) (hashPath string, err error)
	CopyReader(id string, src io.Reader) (hashPath string, err error)
	// GetFilepath returns absolute file path.
	GetFilepath(id, hashPath string) string
	// Delete removes file from local storage.
	Delete(id, hashPath string) error
	// DeleteByName removes file or empty dir. It returns (false, nil) if dir is not empty.
	DeleteByName(name string) (bool, error)
	// GetEtag returns etag of file content.
	GetEtag(id, hashPath string) (string, error)
}