Examples with CronSequenceGenerator org.springframework.scheduling.support.CronSequenceGenerator used on opensource projects

Example 1 with CronSequenceGenerator

use of org.springframework.scheduling.support.CronSequenceGenerator in project irida by phac-nml.

the class ProjectEventEmailScheduledTaskImpl method getPriorDateFromCronString.

/**
 * Get the last time the job was run from the given cron string
 *
 * @param cron the cron string
 * @return A Date of the last time the job was run
 */
public static Date getPriorDateFromCronString(String cron) {
    // find the number of milliseconds in the configured time
    long timeInMillis = Calendar.getInstance().getTimeInMillis();
    CronSequenceGenerator gen = new CronSequenceGenerator(cron);
    long futureTime = gen.next(new Date()).getTime();
    long difference = futureTime - timeInMillis;
    return new Date(timeInMillis - difference);
}

Example 2 with CronSequenceGenerator

use of org.springframework.scheduling.support.CronSequenceGenerator in project cloudbreak by hortonworks.

the class DateUtils method isTrigger.

public boolean isTrigger(TimeAlert alert, long monitorUpdateRate) {
    try {
        String timeZone = alert.getTimeZone();
        CronSequenceGenerator cronExpression = getCronExpression(alert.getCron());
        ZonedDateTime currentTime = dateTimeUtils.getDefaultZonedDateTime();
        ZonedDateTime zonedCurrentTime = dateTimeUtils.getZonedDateTime(currentTime.toInstant(), timeZone);
        LocalDateTime startTimeOfTheMonitorInterval = zonedCurrentTime.toLocalDateTime().minus(monitorUpdateRate, ChronoUnit.MILLIS);
        Date startDate = Date.from(startTimeOfTheMonitorInterval.toInstant(currentTime.getOffset()));
        Date nextTime = cronExpression.next(startDate);
        ZonedDateTime zonedNextTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(nextTime.getTime()), currentTime.getZone()).atZone(ZoneId.of(timeZone));
        long interval = (zonedCurrentTime.toEpochSecond() - zonedNextTime.toEpochSecond()) * SECOND_TO_MILLISEC;
        LOGGER.info("Time alert '{}' next firing at '{}' compared to current time '{}' in timezone '{}'", alert.getName(), zonedNextTime, zonedCurrentTime, timeZone);
        return interval >= 0 && interval < monitorUpdateRate;
    } catch (ParseException e) {
        LOGGER.warn("Invalid cron expression, {}", e.getMessage());
        return false;
    }
}

Example 3 with CronSequenceGenerator

use of org.springframework.scheduling.support.CronSequenceGenerator in project cuba by cuba-platform.

the class Scheduling method calculateNextCronDate.

protected long calculateNextCronDate(ScheduledTask task, long date, long currentDate, long frame) {
    CronSequenceGenerator cronSequenceGenerator = new CronSequenceGenerator(task.getCron(), getCurrentTimeZone());
    // if last start = 0 (task never has run) or to far in the past, we use (NOW - FRAME) timestamp for pivot time
    // this approach should work fine cause cron works with absolute time
    long pivotPreviousTime = Math.max(date, currentDate - frame);
    Date currentStart = null;
    Date nextDate = cronSequenceGenerator.next(new Date(pivotPreviousTime));
    while (nextDate.getTime() < currentDate) {
        // if next date is in past try to find next date nearest to now
        currentStart = nextDate;
        nextDate = cronSequenceGenerator.next(nextDate);
    }
    if (currentStart == null) {
        currentStart = nextDate;
    }
    log.trace("{}\n now={} frame={} currentStart={} lastStart={} cron={}", task, currentDate, frame, currentStart, task.getCron());
    return currentStart.getTime();
}

Example 4 with CronSequenceGenerator

use of org.springframework.scheduling.support.CronSequenceGenerator in project cuba by cuba-platform.

the class CronValidator method validate.

@Override
public void validate(Object value) throws ValidationException {
    if (value != null) {
        ServerInfoService serverInfoService = AppBeans.get(ServerInfoService.NAME);
        Messages messages = AppBeans.get(Messages.NAME);
        try {
            new CronSequenceGenerator(value.toString(), serverInfoService.getTimeZone());
        } catch (Exception e) {
            throw new ValidationException(messages.getMessage(CronValidator.class, "validation.cronInvalid"));
        }
    }
}

Example 5 with CronSequenceGenerator

use of org.springframework.scheduling.support.CronSequenceGenerator in project commons by terran4j.

the class DSchedulingAspect method isValidTime.

boolean isValidTime(JobExeInfo lastInfo, Scheduled scheduled, DScheduling distributedScheduling, Logger log) {
    // 之前没有任务执行，视为有效的执行时间。
    if (lastInfo == null) {
        return true;
    }
    // 无效的任务信息，视为无效的执行时间。
    if (lastInfo.getBeginTime() == null || lastInfo.getEndTime() == null) {
        if (log.isInfoEnabled()) {
            log.info("Invalid lastInfo(beginTime OR endTime is null): {}", lastInfo);
        }
        return false;
    }
    long currentTime = System.currentTimeMillis();
    long lastBeginTime = lastInfo.getBeginTime();
    long lastEndTime = lastInfo.getEndTime();
    long tolerableTime = tolerableTimeDeviation();
    StringValueResolver resolver = getResolver();
    // 最早开始的时间点。
    Long point = null;
    String cornText = scheduled.cron();
    if (StringUtils.hasText(cornText)) {
        cornText = resolver.resolveStringValue(cornText);
        String zone = scheduled.zone();
        TimeZone timeZone;
        if (StringUtils.hasText(zone)) {
            zone = resolver.resolveStringValue(zone);
            timeZone = StringUtils.parseTimeZoneString(zone);
        } else {
            timeZone = TimeZone.getDefault();
        }
        CronSequenceGenerator corn = new CronSequenceGenerator(cornText, timeZone);
        Long currentPoint = corn.next(new Date(lastEndTime)).getTime();
        point = getMinPoint(point, currentPoint);
    }
    long fixedDelay = scheduled.fixedDelay();
    if (fixedDelay >= 0) {
        Long currentPoint = lastEndTime + fixedDelay;
        point = getMinPoint(point, currentPoint);
    }
    String fixedDelayString = scheduled.fixedDelayString();
    if (StringUtils.hasText(fixedDelayString)) {
        fixedDelayString = resolver.resolveStringValue(fixedDelayString);
        Long currentPoint = lastEndTime + Long.parseLong(fixedDelayString);
        point = getMinPoint(point, currentPoint);
    }
    long fixedRate = scheduled.fixedRate();
    if (fixedRate > 0) {
        Long currentPoint = lastBeginTime + fixedRate;
        point = getMinPoint(point, currentPoint);
    }
    String fixedRateString = scheduled.fixedRateString();
    if (StringUtils.hasText(fixedRateString)) {
        fixedRateString = resolver.resolveStringValue(fixedRateString);
        Long currentPoint = lastBeginTime + fixedRate;
        point = getMinPoint(point, currentPoint);
    }
    Assert.isTrue(point != null, "Invalid scheduled: " + scheduled);
    return point - tolerableTime <= currentTime;
}