public String execute()

in src/functions/src/main/java/org/apache/jmeter/functions/RandomDate.java [136:205]
66 lines of code
12 McCabe index (conditional complexity)

    public String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException {
        DateTimeFormatter formatter;
        if(values.length>3) {
            String localeAsString = values[3].execute().trim();
            if (!localeAsString.trim().isEmpty()) {
                locale = LocaleUtils.toLocale(localeAsString);
            }
        }

        String format = values[0].execute().trim();
        if (!StringUtils.isEmpty(format)) {
            try {
                LocaleFormatObject lfo = new LocaleFormatObject(format, locale);
                formatter = dateRandomFormatterCache.get(lfo, key -> createFormatter((LocaleFormatObject) key));
            } catch (IllegalArgumentException ex) {
                log.error(
                        "Format date pattern '{}' is invalid (see https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html)",
                        format, ex); // $NON-NLS-1$
                return "";
            }
        } else {
            try {
                LocaleFormatObject lfo = new LocaleFormatObject("yyyy-MM-dd", locale);
                formatter = dateRandomFormatterCache.get(lfo, key -> createFormatter((LocaleFormatObject) key));
            } catch (IllegalArgumentException ex) {
                log.error(
                        "Format date pattern '{}' is invalid (see https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html)",
                        format, ex); // $NON-NLS-1$
                return "";
            }
        }

        String dateStart = values[1].execute().trim();
        long localStartDate = 0;
        if (!dateStart.isEmpty()) {
            try {
                localStartDate = LocalDate.parse(dateStart, formatter).toEpochDay();
            } catch (DateTimeParseException | NumberFormatException ex) {
                log.error("Failed to parse Start Date '{}'", dateStart, ex); // $NON-NLS-1$
            }
        } else {
            try {
                localStartDate = LocalDate.now(systemDefaultZoneID).toEpochDay();
            } catch (DateTimeParseException | NumberFormatException ex) {
                log.error("Failed to create current date '{}'", dateStart, ex); // $NON-NLS-1$
            }
        }
        long localEndDate = 0;
        String dateEnd = values[2].execute().trim();
        try {
            localEndDate = LocalDate.parse(dateEnd, formatter).toEpochDay();
        } catch (DateTimeParseException | NumberFormatException ex) {
            log.error("Failed to parse End date '{}'", dateEnd, ex); // $NON-NLS-1$
        }

        // Generate the random date
        String dateString = "";
        if (localEndDate < localStartDate) {
            log.error("End Date '{}' must be greater than Start Date '{}'", dateEnd, dateStart); // $NON-NLS-1$
        } else {
            long randomDay = ThreadLocalRandom.current().nextLong(localStartDate, localEndDate);
            try {
                dateString = LocalDate.ofEpochDay(randomDay).format(formatter);
            } catch (DateTimeParseException | NumberFormatException ex) {
                log.error("Failed to generate random date '{}'", randomDay, ex); // $NON-NLS-1$
            }
            addVariableValue(dateString, values, 4);
        }
        return dateString;
    }