Function getSanitizedMachineName

cli/operations/server/config.go:224–271

getSanitizedMachineName gets the name of the machine and returns it in sanitized format.

()

// getSanitizedMachineName gets the name of the machine and returns it in sanitized format.
func getSanitizedMachineName() (string, error) {
	// use the hostname as default id of the instance
	hostName, err := os.Hostname()
	if err != nil {
		return "", err
	}

	// Always cast to lower and remove all unwanted chars
	// NOTE: this could theoretically lead to overlaps, then it should be passed explicitly
	// NOTE: for k8s names/ids below modifications are all noops
	// https://kubernetes.io/docs/concepts/overview/working-with-objects/names/

	// The following code will:
	// * remove invalid runes
	// * remove diacritical marks (ie "smörgåsbord" to "smorgasbord")
	// * lowercase A-Z to a-z
	// * leave only a-z, 0-9, '-', '.' and replace everything else with '_'
	hostName, _, err = transform.String(
		transform.Chain(
			norm.NFD,
			runes.ReplaceIllFormed(),
			runes.Remove(runes.In(unicode.Mn)),
			runes.Map(
				func(r rune) rune {
					switch {
					case 'A' <= r && r <= 'Z':
						return r + 32
					case 'a' <= r && r <= 'z':
						return r
					case '0' <= r && r <= '9':
						return r
					case r == '-', r == '.':
						return r
					default:
						return '_'
					}
				},
			),
			norm.NFC,
		),
		hostName,
	)
	if err != nil {
		return "", err
	}

	return hostName, nil
}

// ProvideDatabaseConfig loads the database config from the main config.
func ProvideDatabaseConfig(config *types.Config) database.Config {