Wiki cron

Mechanism for executing scheduled tasks in MediaWiki

This allows extension to run ProcessManager processes on a schedule, using standard crontab expression.

Declare a cron

Use the MWStake.WikiCronManager service to declare a cron. The cron key is a unique identifier for the cron, the cron expression is a standard crontab expression, and the process is a ManagedProcess object (see above linked ProcessManager docu for more info).

$GLOBALS['wgExtensionFunctions'][] = static function () {
    /** @var WikiCronManager $cronManager */
    $cronManager = MediaWikiServices::getInstance()->getService( 'MWStake.WikiCronManager' );
    $cronManager->registerCron( 'notify', '*/5 * * * *', new ManagedProcess( [
        'test' => [ 'class' => TestStep::class ]
    ] ) );
};

Note: This does not need to be declared in an extension function but needs to be late enough to prevent premature service access.

Thats it! This process will be executed as declared in the cron expression. (as long as processRunner is running).

Info script

See what crons are declared and their statuses.

List crons

> php maintenance/wikiCron.php
--------------------------------------------------------------------------------------------------------------
Interval            Cron key                                Enabled   Last run                 Last Status
--------------------------------------------------------------------------------------------------------------
*/5 * * * *         notify                                  Yes       2024-11-08 14:20:57      terminated
-------------------------------------------------------------------------------------------------------------- 

Get full info and history on a cron

> php maintenance/wikiCron.php --name=notify

Cron key: notify
Interval: */5 * * * *
Enabled: 1
Last run: 2024-11-08 14:30:06
Last status: terminated
--------------------------------------------------------------------------------------------------------------
Steps:
{
"test": {
"class": "MediaWiki\\Extension\\NotifyMe\\TestStep"
}
}
--------------------------------------------------------------------------------------------------------------
Execution history (max 20):
--------------------------------------------------------------------------------------------------------------
Time                     State               Exit code      Output
--------------------------------------------------------------------------------------------------------------
20241108143006           terminated          0              {"some":"data"}
20241108142501           terminated          0              {"some":"data"}
20241108142057           terminated          0              {"some":"data"}
20241108141652           terminated          0              {"some":"data"}
20241108141551           terminated          0              {"some":"data"}
20241108141450           terminated          0              {"some":"data"}
20241108141348           terminated          0              {"some":"data"}
20241108141247           terminated          0              {"some":"data"}
20241108141146           terminated          0              {"some":"data"}
20241108141045           terminated          0              {"some":"data"}
20241108140944           terminated          0              {"some":"data"}
20241108140842           terminated          0              {"some":"data"}
20241108140741           terminated          0              {"some":"data"}
20241108140640           terminated          0              {"some":"data"}
20241108140538           terminated          0              {"some":"data"}
20241108140437           terminated          0              {"some":"data"}
20241108140335           terminated          0              {"some":"data"}
20241108140234           terminated          0              {"some":"data"}
20241108140133           terminated          0              {"some":"data"}
20241108140031           terminated          0              {"some":"data"}
--------------------------------------------------------------------------------------------------------------

Functions

Disable a cron

> php maintenance/wikiCron.php --name=notify --disable

Enable a cron

> php maintenance/wikiCron.php --name=notify --enable