scheduler

(plugins.scheduler)

Overview

The scheduler plugin enables the creation and management of background jobs in headless clients. It supports both cron-based schedules and custom intervals, allowing for versatile task automation.

The addCronJob method schedules tasks using cron expressions, with options for specifying start and end dates, and passing arguments. This method is ideal for periodic tasks such as running jobs at specific times or intervals.

For more custom scheduling, the addJob method allows tasks to be scheduled at a specific start date with options for repetition intervals, counts, and end dates. Additional arguments can be passed to provide further flexibility in task execution.

To monitor jobs, the getCurrentJobNames method retrieves active jobs, and getLastRunJobName provides the most recently executed job. The removeJob method simplifies job management by enabling the deletion of specific tasks.

For more information, refer to the Scheduler API section of the documentation.

Methods Summarized

Type	Name	Summary
void	addCronJob(jobname, cronTimings, method)	Adds a cron job to the scheduler.
void	addCronJob(jobname, cronTimings, method, startDate)	Adds a cron job to the scheduler.
void	addCronJob(jobname, cronTimings, method, startDate, endDate)	Adds a cron job to the scheduler.
void	addCronJob(jobname, cronTimings, method, startDate, endDate, arguments)	Adds a cron job to the scheduler.
void	addJob(jobname, startDate, method)	Adds a job to the scheduler.
void	addJob(jobname, startDate, method, repeatInterval)	Adds a job to the scheduler.
void	addJob(jobname, startDate, method, repeatInterval, repeatCount)	Adds a job to the scheduler.
void	addJob(jobName, startDate, method, repeatInterval, repeatCount, endDate)	Adds a job to the scheduler.
void	addJob(jobname, startDate, method, repeatInterval, repeatCount, endDate, arguments)	Adds a job to the scheduler.
void	addJob(jobname, startDate, method, arguments)	Adds a job to the scheduler.
Array	getCurrentJobNames()	Returns an array with the current jobs.
String	getLastRunJobName()	Returns the last job run from the scheduler.
Boolean	removeJob(jobname)	Removes a job from the scheduler.

Methods Detailed

addCronJob(jobname, cronTimings, method)

Adds a cron job to the scheduler. A cron job must have at least one minute between each execution (otherwise it won't execute).

Parameters

• String jobname ;

• String cronTimings ;

• Function method ;

Returns: void

Sample

// see: http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/tutorial-lesson-06.html for more info
// add a job that runs every 20 minutes after the hour (0,20,40)
plugins.scheduler.addCronJob('20mins','0 0/20 * * * ?',method)
// add a job that runs every day at 23:30 between now and 5 days from now
var dateNow = new Date();
var date5Days = new Date(dateNow.getTime()+5*24*60*60*1000);
plugins.scheduler.addCronJob('23:30','0 30 23 ? * *',method,dateNow,date5Days)

addCronJob(jobname, cronTimings, method, startDate)

Adds a cron job to the scheduler. A cron job must have at least one minute between each execution (otherwise it won't execute).

Parameters

• String jobname ;

• String cronTimings ;

• Function method ;

• Date startDate ;

Returns: void

Sample

// see: http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/tutorial-lesson-06.html for more info
// add a job that runs every 20 minutes after the hour (0,20,40)
plugins.scheduler.addCronJob('20mins','0 0/20 * * * ?',method)
// add a job that runs every day at 23:30 between now and 5 days from now
var dateNow = new Date();
var date5Days = new Date(dateNow.getTime()+5*24*60*60*1000);
plugins.scheduler.addCronJob('23:30','0 30 23 ? * *',method,dateNow,date5Days)

addCronJob(jobname, cronTimings, method, startDate, endDate)

Adds a cron job to the scheduler. A cron job must have at least one minute between each execution (otherwise it won't execute).

Parameters

• String jobname ;

• String cronTimings ;

• Function method ;

• Date startDate ;

• Date endDate ;

Returns: void

Sample

// see: http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/tutorial-lesson-06.html for more info
// add a job that runs every 20 minutes after the hour (0,20,40)
plugins.scheduler.addCronJob('20mins','0 0/20 * * * ?',method)
// add a job that runs every day at 23:30 between now and 5 days from now
var dateNow = new Date();
var date5Days = new Date(dateNow.getTime()+5*24*60*60*1000);
plugins.scheduler.addCronJob('23:30','0 30 23 ? * *',method,dateNow,date5Days)

addCronJob(jobname, cronTimings, method, startDate, endDate, arguments)

Adds a cron job to the scheduler. A cron job must have at least one minute between each execution (otherwise it won't execute).

Parameters

• String jobname ;

• String cronTimings ;

• Function method ;

• Date startDate ;

• Date endDate ;

• Array arguments ;

Returns: void

Sample

// see: http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/tutorial-lesson-06.html for more info
// add a job that runs every 20 minutes after the hour (0,20,40)
plugins.scheduler.addCronJob('20mins','0 0/20 * * * ?',method)
// add a job that runs every day at 23:30 between now and 5 days from now
var dateNow = new Date();
var date5Days = new Date(dateNow.getTime()+5*24*60*60*1000);
plugins.scheduler.addCronJob('23:30','0 30 23 ? * *',method,dateNow,date5Days)

addJob(jobname, startDate, method)

Adds a job to the scheduler.

Parameters

• String jobname ;

• Date startDate ;

• Function method ;

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

addJob(jobname, startDate, method, repeatInterval)

Adds a job to the scheduler.

Parameters

• String jobname ;

• Date startDate ;

• Function method ;

• Number repeatInterval ms

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

addJob(jobname, startDate, method, repeatInterval, repeatCount)

Adds a job to the scheduler.

Parameters

• String jobname ;

• Date startDate ;

• Function method ;

• Number repeatInterval ms

• Number repeatCount ;

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

addJob(jobName, startDate, method, repeatInterval, repeatCount, endDate)

Adds a job to the scheduler.

Parameters

• String jobName ;

• Date startDate ;

• Function method ;

• Number repeatInterval ms

• Number repeatCount ;

• Date endDate ;

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

addJob(jobname, startDate, method, repeatInterval, repeatCount, endDate, arguments)

Adds a job to the scheduler.

Parameters

• String jobname ;

• Date startDate ;

• Function method ;

• Number repeatInterval ms

• Number repeatCount ;

• Date endDate ;

• Array arguments ;

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

addJob(jobname, startDate, method, arguments)

Adds a job to the scheduler.

Parameters

• String jobname ;

• Date startDate ;

• Function method ;

• Array arguments ;

Returns: void

Sample

// add a job that runs at the given date (20 seconds in the future)
// and repeats that every 20 seconds for 40 times or the enddate is reached (0 for no repeats = just one call)
var startDate = new Date();
startDate.setTime(startDate.getTime()+20000);
var endDate = new Date(startDate.getTime()+100000);
plugins.scheduler.addJob('in20seconds',startDate,method,20000,40,endDate)

getCurrentJobNames()

Returns an array with the current jobs.

Returns: Array an array of job names currently scheduled for the client.

Sample

plugins.scheduler.getCurrentJobNames()

getLastRunJobName()

Returns the last job run from the scheduler.

Returns: String the name of the last job that was run by the scheduler.

Sample

plugins.scheduler.getLastRunJobName();

removeJob(jobname)

Removes a job from the scheduler.

Parameters

• String jobname ;

Returns: Boolean true if the job was successfully removed; false otherwise.

Sample

// removes a job 'myjob' from the scheduler
plugins.scheduler.removeJob('myjob');

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