private static boolean isDateAndTimeOctetString()

in hertzbeat-collector/hertzbeat-collector-basic/src/main/java/org/apache/hertzbeat/collector/collect/snmp/SnmpCollectImpl.java [323:362]

• 30 lines of code
• 16 McCabe index (conditional complexity)

    private static boolean isDateAndTimeOctetString(VariableBinding binding) {
        if (!(binding.getVariable() instanceof OctetString)) {
            return false;
        }
        byte[] bytes = HexFormat.of().parseHex(binding.toValueString().replaceAll(HEX_SPLIT, ""));
        if (bytes.length != 8 && bytes.length != 11) return false;

        int year = ((bytes[0] & 0xFF) << 8) | (bytes[1] & 0xFF);
        if (year < 1970 || year > 3000) return false;

        int month = bytes[2] & 0xFF;
        if (month < 1 || month > 12) return false;

        int day = bytes[3] & 0xFF;
        if (day < 1 || day > 31) return false;

        int hour = bytes[4] & 0xFF;
        if (hour > 23) return false;

        int minute = bytes[5] & 0xFF;
        if (minute > 59) return false;

        int second = bytes[6] & 0xFF;
        if (second > 59) return false;

        int deciSecond = bytes[7] & 0xFF;
        if (deciSecond > 99) return false;

        if (bytes.length == 11) {
            int tzSign = bytes[8] & 0xFF;
            if (tzSign != 0x2B && tzSign != 0x2D) return false;

            int tzHour = bytes[9] & 0xFF;
            if (tzHour > 23) return false;

            int tzMinute = bytes[10] & 0xFF;
            if (tzMinute > 59) return false;
        }
        return true;
    }