chunks

type Chunk struct {
	Type  string
	Level uint8
	Buf   []byte
}

type Store interface {
	// Get a chunk from the chunk store.
	//
	// The returned Chunk is considered read-only and must not be
	// modified.
	Get(ctx context.Context, key cas.Key, type_ string, level uint8) (*Chunk, error)

	// Add a chunk to the chunk store.
	Add(ctx context.Context, chunk *Chunk) (key cas.Key, err error)
}