Module com.aoapps.cron

Package com.aoapps.cron

Class CronDaemon

java.lang.Object

com.aoapps.cron.CronDaemon

public final class CronDaemon
extends Object

Run cron jobs based on their scheduling requirements. Once per minute it polls each cron job and runs it if it is currently scheduled.

If this main task is delayed for more than a minute, schedules will be missed. Some possible causes include the process was stopped (kill -STOP) or the machine was suspended/hibernated.

Author:

AO Industries, Inc.

See Also:

• CronJob

Method Summary

Modifier and Type	Method	Description
static void	addCronJob(CronJob job, Logger logger)	Adds a CronJob to the list of jobs.
static void	removeCronJob(CronJob job)	Removes a CronJob from the list of jobs.
static void	runImmediately(CronJob job)	Runs a CronJob immediately if it is not already running or allows concurrent execution.
static void	setLogger(Logger logger)	Sets the logger for the cron daemon errors (not the individual cron jobs).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

setLogger

public static void setLogger(Logger logger)

Sets the logger for the cron daemon errors (not the individual cron jobs).

Parameters:

logger - The logger or null to use the default logger

addCronJob

public static void addCronJob(CronJob job,
 Logger logger)

Adds a CronJob to the list of jobs. If the job is already in the list, it will not be added again.

removeCronJob

public static void removeCronJob(CronJob job)

Removes a CronJob from the list of jobs.

runImmediately

public static void runImmediately(CronJob job)
                           throws IllegalStateException

Runs a CronJob immediately if it is not already running or allows concurrent execution.

Throws:

IllegalStateException - If the job has not been added.