public class CustomTimeBasedRollingPolicy<E> extends TimeBasedRollingPolicy<E> {

    @Override
    public void start() {
        setTimeBasedFileNamingAndTriggeringPolicy(new CustomTimeBasedFileNamingAndTriggeringPolicy<>());
        super.start();
    }

}

class CustomTimeBasedFileNamingAndTriggeringPolicy<E> extends TimeBasedFileNamingAndTriggeringPolicyBase<E> {

    private static final String COLLIDING_DATE_FORMAT_URL = CODES_URL + "#rfa_collision_in_dateFormat";

    private FileNamePattern fileNamePatternWithoutCompSuffix;

    @Override
    public void start() {
        super.start();
        if (!super.isErrorFree())
            return;

        final var fileNamePatternStr = tbrp.getFileNamePattern();
        final var fileNamePattern = new FileNamePattern(fileNamePatternStr, this.context);
        fileNamePatternWithoutCompSuffix = new FileNamePattern(Compressor.computeFileNameStrWithoutCompSuffix(fileNamePatternStr, tbrp.getCompressionMode()), this.context);
        DateTokenConverter<Object> dtc = fileNamePattern.getPrimaryDateTokenConverter();
        if (dtc == null) {
            throw new IllegalStateException("FileNamePattern [" + fileNamePattern.getPattern() + "] does not contain a valid DateToken");
        }

        if (dtc.getTimeZone() != null) {
            rc = new CustomTopOfHourRollingCalendar(dtc.getDatePattern(), dtc.getTimeZone(), Locale.getDefault());
        } else {
            rc = new CustomTopOfHourRollingCalendar(dtc.getDatePattern());
        }
        addInfo("The date pattern is '" + dtc.getDatePattern() + "' from file name pattern '" + fileNamePattern.getPattern() + "'.");
        rc.printPeriodicity(this);

        if (!rc.isCollisionFree()) {
            addError("The date format in FileNamePattern will result in collisions in the names of archived log files.");
            addError(CoreConstants.MORE_INFO_PREFIX + COLLIDING_DATE_FORMAT_URL);
            withErrors();
            return;
        }
        if(fileNamePattern.hasIntegerTokenCOnverter()) {
            addError("Filename pattern ["+fileNamePattern+"] contains an integer token converter, i.e. %i, INCOMPATIBLE with this configuration. Remove it.");
            return;
        }
        archiveRemover = new TimeBasedArchiveRemover(fileNamePattern, rc);
        archiveRemover.setContext(context);
        started = true;
    }

    @Override
    public boolean isTriggeringEvent(File activeFile, final E event) {
        long time = getCurrentTime();
        if (time >= nextCheck) {
            Date dateOfElapsedPeriod = dateInCurrentPeriod;
            addInfo("Elapsed period: " + dateOfElapsedPeriod);
            elapsedPeriodsFileName = fileNamePatternWithoutCompSuffix.convert(dateOfElapsedPeriod);
            setDateInCurrentPeriod(time);
            computeNextCheck();
            return true;
        } else {
            return false;
        }
    }
}

class CustomTopOfHourRollingCalendar extends RollingCalendar {

    private final PeriodicityType calculatedPeriodicityType;

    CustomTopOfHourRollingCalendar(String datePattern) {
        super(datePattern);
        this.calculatedPeriodicityType = computePeriodicityType();
    }

    CustomTopOfHourRollingCalendar(String datePattern, TimeZone tz, Locale locale) {
        super(datePattern, tz, locale);
        this.calculatedPeriodicityType = computePeriodicityType();
    }

    @Override
    public long periodBarriersCrossed(long start, long end) {
        if(TOP_OF_HOUR == calculatedPeriodicityType) {
            if (start > end)
                throw new IllegalArgumentException("Start cannot come before end");

            long startFloored = getStartOfCurrentPeriodWithGMTOffsetCorrection(start, getTimeZone());
            long endFloored = getStartOfCurrentPeriodWithGMTOffsetCorrection(end, getTimeZone());

            long diff = endFloored - startFloored;

            return diff / MILLIS_IN_ONE_HOUR;
        }
        return super.periodBarriersCrossed(start, end);
    }
}