static boolean isValid()

in metrics-core/src/main/java/software/amazon/swage/metrics/record/file/FileRecorder.java [196:203]

• 7 lines of code
• 4 McCabe index (conditional complexity)

    static boolean isValid(final Metric label) {
        // Any value that makes it difficult/impossible to parse makes a label invalid.
        final String str = label.toString();
        return !(str.contains("\n")
                || str.contains(",")
                || str.contains(":")
                || str.contains("="));
    }