Function String

envknob/envknob.go:117–121

String returns the named environment variable, using os.Getenv. If the variable is non-empty, it's also tracked & logged as being an in-use knob.

(envVar string)

// If the variable is non-empty, it's also tracked & logged as being
// an in-use knob.
func String(envVar string) string {
	v := os.Getenv(envVar)
	noteEnv(envVar, v)
	return v
}

// RegisterString returns a func that gets the named environment variable,
// without a map lookup per call. It assumes that mutations happen via