INNER CODE UNIT · Go

loadConfig

offen/docker-volume-backup · cmd/backup/config_provider.go:52

func loadConfig(lookup envProxy) (*Config, error) {
	envconfig.Lookup = func(key string) (string, bool) {
		value, okValue := lookup(key)
		location, okFile := lookup(key + "_FILE")

		switch {
		case okValue && !okFile: // only value
			return value, true
		case !okValue && okFile: // only file
			contents, err := os.ReadFile(location)
			if err != nil {
				return "", false
			}
			return string(contents), true
		case okValue && okFile: // both
			return "", false
		default: // neither, ignore
			return "", false

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