gosync

type BlockRequester interface {
	DoRequest(startOffset int64, enfOffset int64) (data []byte, err error)
}

type Config struct {
	// BlockSize force a fixed checksum block-size
	BlockSize int64

	// Logger is the logger used for gosync log.
	Logger logging.Logger

	// A hash function for calculating a strong checksum
	StrongHasher hash.Hash

	// MaxRequestBlockSize defines the maximum file block size for the remote transfer
	MaxRequestBlockSize int64

	// Resolver is an interface used by the patchers to obtain blocks from the source.
	Requester BlockRequester

	// Function for getting the file size
	SizeFunc func() (int64, error)
}

type GoSync interface {
	Sign(io.Reader) *syncpb.ChunkChecksums

	Delta(io.ReaderAt, *syncpb.ChunkChecksums) (*syncpb.PatcherBlockSpan, error)

	Patch(io.ReadSeeker, *syncpb.PatcherBlockSpan, io.Writer) error
}

type ReadSeekerAt interface {
	io.ReadSeeker
	io.ReaderAt
}