download

Documentation

Index

• type Downloader
  • func NewDownloader(logger logger.Logger, fileSystem FileSystem) *Downloader
  • func (v *Downloader) Download(ctx context.Context, reader io.ReadCloser, expectedSHA384 string, ...) (_ io.ReadCloser, err error)
• type FileSystem
  • func DefaultFileSystem() FileSystem

Types

type Downloader

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

Downloader validates a resource blob.

func NewDownloader

func NewDownloader(logger logger.Logger, fileSystem FileSystem) *Downloader

NewDownloader returns a new resource blob validator.

func (*Downloader) Download

func (v *Downloader) Download(
	ctx context.Context,
	reader io.ReadCloser,
	expectedSHA384 string,
	expectedSize int64,
) (_ io.ReadCloser, err error)

Download takes a request body ReadCloser containing a resource blob and checks that the size and hash match the expected values. It downloads the blob to a temporary file and returns a ReadCloser that deletes the temporary file on closure.

type FileSystem

type FileSystem interface {
	// CreateTemp creates a new temporary file in the directory dir,
	// opens the file for reading and writing, and returns the resulting file.
	CreateTemp(dir, pattern string) (*os.File, error)

	// Open opens the named file for reading.
	Open(name string) (*os.File, error)

	// Remove removes the named file or (empty) directory.
	Remove(name string) error
}

FileSystem defines a file system for modifying files on a users system.

func DefaultFileSystem

func DefaultFileSystem() FileSystem

DefaultFileSystem returns the default file system.