Function key

pkg/downloader/manager.go:915–922

key is used to turn a name, such as a repository url, into a filesystem safe name that is unique for querying. To accomplish this a unique hash of the string is used.

(name string)

// safe name that is unique for querying. To accomplish this a unique hash of
// the string is used.
func key(name string) (string, error) {
	in := strings.NewReader(name)
	hash := crypto.SHA256.New()
	if _, err := io.Copy(hash, in); err != nil {
		return "", nil
	}
	return hex.EncodeToString(hash.Sum(nil)), nil
}