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<?php
namespace Drupal\system\EventSubscriber;
use Drupal\Core\Config\ConfigCrudEvent;
use Drupal\Core\Config\ConfigEvents;
use Drupal\system\SecurityAdvisories\SecurityAdvisoriesFetcher;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Defines a config subscriber for changes to 'system.advisories'.
*/
class AdvisoriesConfigSubscriber implements EventSubscriberInterface {
/**
* The security advisory fetcher service.
*
* @var \Drupal\system\SecurityAdvisories\SecurityAdvisoriesFetcher
*/
protected $securityAdvisoriesFetcher;
/**
* Constructs a new ConfigSubscriber object.
*
* @param \Drupal\system\SecurityAdvisories\SecurityAdvisoriesFetcher $security_advisories_fetcher
* The security advisory fetcher service.
*/
public function __construct(SecurityAdvisoriesFetcher $security_advisories_fetcher) {
$this->securityAdvisoriesFetcher = $security_advisories_fetcher;
}
/**
* Deletes the stored response from the security advisories feed, if needed.
*
* The stored response will only be deleted if the 'interval_hours' config
* setting is reduced from the previous value.
*
* @param \Drupal\Core\Config\ConfigCrudEvent $event
* The configuration event.
*/
public function onConfigSave(ConfigCrudEvent $event): void {
$saved_config = $event->getConfig();
if ($saved_config->getName() === 'system.advisories' && $event->isChanged('interval_hours')) {
$original_interval = $saved_config->getOriginal('interval_hours');
if ($original_interval && $saved_config->get('interval_hours') < $original_interval) {
// If the new interval is less than the original interval, delete the
// stored results.
$this->securityAdvisoriesFetcher->deleteStoredResponse();
}
}
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents(): array {
$events[ConfigEvents::SAVE][] = ['onConfigSave'];
return $events;
}
}
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