How to use the cron.CronTime function in cron
To help you get started, we’ve selected a few cron examples, based on popular ways it is used in public projects.
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agenda / agenda / lib / job.js View on Github 
const computeFromInterval = () => {
debug('[%s:%s] computing next run via interval [%s]', this.attrs.name, this.attrs._id, interval);
let lastRun = this.attrs.lastRunAt || new Date();
lastRun = dateForTimezone(lastRun);
try {
const cronTime = new CronTime(interval);
let nextDate = cronTime._getNextDateFrom(lastRun);
if (nextDate.valueOf() === lastRun.valueOf()) {
// Handle cronTime giving back the same date for the next run time
nextDate = cronTime._getNextDateFrom(dateForTimezone(new Date(lastRun.valueOf() + 1000)));
}
this.attrs.nextRunAt = nextDate;
debug('[%s:%s] nextRunAt set to [%s]', this.attrs.name, this.attrs._id, this.attrs.nextRunAt.toISOString());
} catch (e) {
// Nope, humanInterval then!
try {
if (!this.attrs.lastRunAt && humanInterval(interval)) {
this.attrs.nextRunAt = lastRun.valueOf();
debug('[%s:%s] nextRunAt set to [%s]', this.attrs.name, this.attrs._id, this.attrs.nextRunAt.toISOString());
} else {
this.attrs.nextRunAt = lastRun.valueOf() + humanInterval(interval);
debug('[%s:%s] nextRunAt set to [%s]', this.attrs.name, this.attrs._id, this.attrs.nextRunAt.toISOString());const computeFromInterval = () => {
debug('[%s:%s] computing next run via interval [%s]', this.attrs.name, this.attrs._id, interval);
let lastRun = this.attrs.lastRunAt || new Date();
lastRun = dateForTimezone(lastRun);
try {
const cronTime = new CronTime(interval);
let nextDate = cronTime._getNextDateFrom(lastRun);
if (nextDate.valueOf() === lastRun.valueOf() || nextDate.valueOf() <= previousNextRunAt.valueOf()) {
// Handle cronTime giving back the same date for the next run time
nextDate = cronTime._getNextDateFrom(dateForTimezone(new Date(lastRun.valueOf() + 1000)));
}
this.attrs.nextRunAt = nextDate;
debug('[%s:%s] nextRunAt set to [%s]', this.attrs.name, this.attrs._id, new Date(this.attrs.nextRunAt).toISOString());
// Either `xo` linter or Node.js 8 stumble on this line if it isn't just ignored
} catch (error) { // eslint-disable-line no-unused-vars
// Nope, humanInterval then!
try {
if (!this.attrs.lastRunAt && humanInterval(interval)) {
this.attrs.nextRunAt = lastRun.valueOf();
debug('[%s:%s] nextRunAt set to [%s]', this.attrs.name, this.attrs._id, new Date(this.attrs.nextRunAt).toISOString());
} else {function computeRecurringDates (pattern, { startDate, endDate, timezone = 'UTC' } = {}) {
if (_.isNil(timezone)) timezone = 'UTC'
if (!isDateString(startDate) || !isDateString(endDate)) {
throw new Error('Expected start and end dates')
}
if (endDate < startDate) {
throw new Error('Invalid dates')
}
const cronTime = new CronTime(pattern, timezone)
let continueLoop = true
const dates = []
let cronISODate = new Date(new Date(startDate).getTime() - 1) // start from `startDate` minus 1 millisecond
while (continueLoop) {
// `_getNextDateFrom` is a private method from `CronTime.prototype`
// Please check its availability when upgrading the library `cron`
const cronMomentDate = cronTime._getNextDateFrom(cronISODate, timezone)
cronISODate = cronMomentDate.toISOString()
continueLoop = cronISODate < endDate
if (continueLoop) {
dates.push(cronISODate)
}test('checks the existence of the private function _getNextDateFrom from the library cron', (t) => {
const cronTime = new CronTime('* * * * *', 'UTC')
t.is(typeof cronTime._getNextDateFrom, 'function')
})function activateNotifications(event, isEnabled) {
store.set('notification.isEnabled', isEnabled);
if (isEnabled) {
const time = store.get('notification.time');
const timeArray = time.split(':');
const cronTime = `0 ${timeArray[1]} ${timeArray[0]} * * *`;
job.setTime(new CronTime(cronTime));
job.start();
} else {
job.stop();
}
event.sender.send('activateNotificationsSet');
}countdown: helper_1.countdown(new Date(ev.start))
};
if (config.offset) {
eventStart.setMinutes(eventEnd.getMinutes() + parseInt(config.offset));
}
else {
eventStart.setMinutes(eventEnd.getMinutes() - 1);
}
var job2 = new cron_1.CronJob(eventEnd, cronJobEnd.bind(null, event_2, node));
var startedCronJobs_2 = node.context().get('startedCronJobs') || {};
if (!newCronJobs.has(uid) && !startedCronJobs_2[uid]) {
newCronJobs.set(uid, job2);
node.debug("new - " + uid);
}
else if (startedCronJobs_2[uid]) {
startedCronJobs_2[uid].setTime(new cron_2.CronTime(eventEnd));
startedCronJobs_2[uid].start();
node.context().set('startedCronJobs', startedCronJobs_2);
node.debug("started - " + uid);
}
}
}
}
}
if (newCronJobs) {
newCronJobs.forEach(function (job, key) {
try {
job.start();
node.debug("starting - " + key);
var startedCronJobs = node.context().get('startedCronJobs') || {};
startedCronJobs[key] = job;
node.context().set('startedCronJobs', startedCronJobs);Scheduling.prototype._beforeUpdateHandler = function (query, update) {
var entity = update.$set;
if (entity.name)
entity.modificationDate = new Date();
if (entity.cron) {
entity.modificationDate = new Date();
var cron = new CronTime(entity.cron);
entity.nextRun = cron._getNextDateFrom(new Date()).toDate();
entity.state = "planned";
}
};cron: function (after) {
try {
//compute next date from the cron interval
var cronTime = new CronTime(interval, timezone);
var nextRun = cronTime.sendAt();
//return computed time
after(null, nextRun.toDate());
} catch (ex) {
//to allow parallel run with other interval parser
after(null, null);
}
},countdown: helper_1.countdown(new Date(ev.start))
};
if (config.offset) {
eventStart.setMinutes(eventStart.getMinutes() + parseInt(config.offset));
}
else {
eventStart.setMinutes(eventStart.getMinutes() - 1);
}
var job2 = new cron_1.CronJob(eventStart, cronJobStart.bind(null, event_1, node));
var startedCronJobs_1 = node.context().get('startedCronJobs') || {};
if (!newCronJobs.has(uid) && !startedCronJobs_1[uid]) {
newCronJobs.set(uid, job2);
node.debug("new - " + uid);
}
else if (startedCronJobs_1[uid]) {
startedCronJobs_1[uid].setTime(new cron_2.CronTime(eventStart));
startedCronJobs_1[uid].start();
node.context().set('startedCronJobs', startedCronJobs_1);
node.debug("started - " + uid);
}
}
if (eventEnd > dateNow) {
var uid = crypto.MD5(ev.created + ev.summary + "end").toString();
if (ev.uid) {
uid = ev.uid + "end";
}
possibleUids.push(uid);
var event_2 = {
summary: ev.summary,
topic: ev.summary,
id: uid,
location: ev.location,
