Deprecation: #107550 - Table Garbage Collection Task configuration via $GLOBALS 

See forge#107550

Description 

The TableGarbageCollectionTask has been migrated to use TYPO3's native TCA-based task configuration system. As part of this migration, the previous configuration method using $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks'][\TYPO3\CMS\Scheduler\Task\TableGarbageCollectionTask::class]['options']['tables'] has been deprecated and will be removed in TYPO3 v15.

Impact 

Using the old configuration method will trigger a PHP deprecation warning. The functionality continues to work for now, with the deprecated configuration being merged with the new TCA-based configuration automaticcaly.

Affected installations 

Any installation that configures custom tables for the TableGarbageCollectionTask using the $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks'][\TYPO3\CMS\Scheduler\Task\TableGarbageCollectionTask::class]['options']['tables'] configuration.

The extension scanner will report any usage as weak match.

Migration 

Instead of configuring tables via $GLOBALS['TYPO3_CONF_VARS'] , tables should now be configured in TCA using the taskOptions configuration of the corresponding record type within Configuration/TCA/Overrides/:

Before (deprecated):

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks'][\TYPO3\CMS\Scheduler\Task\TableGarbageCollectionTask::class]['options']['tables']['tx_myextension_my_table'] = [
    'dateField' => 'tstamp',
    'expirePeriod' => 90,
];
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After (new method):

if (isset($GLOBALS['TCA']['tx_scheduler_task'])) {
    $GLOBALS['TCA']['tx_scheduler_task']['types'][\TYPO3\CMS\Scheduler\Task\TableGarbageCollectionTask::class]['taskOptions']['tables']['tx_myextension_my_table'] = [
        'dateField' => 'tstamp',
        'expirePeriod' => 90,
    ];
}
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It is also possible to modify the tables added by TYPO3, for example changing the expirePeriod of sys_log:

if (isset($GLOBALS['TCA']['tx_scheduler_task'])) {
    $GLOBALS['TCA']['tx_scheduler_task']['types'][\TYPO3\CMS\Scheduler\Task\TableGarbageCollectionTask::class]['taskOptions']['tables']['sys_log']['expirePeriod'] = 240;
}
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The new TCA-based configuration provides the same functionality while integrating better with TYPO3's native scheduler task system and FormEngine.