UpdateController.php

<?php

namespace Drupal\update\Controller;

use Drupal\update\UpdateManagerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Controller\ControllerBase;

/**
 * Controller routines for update routes.
 */
class UpdateController extends ControllerBase {
    
    /**
     * Update manager service.
     *
     * @var \Drupal\update\UpdateManagerInterface
     */
    protected $updateManager;
    
    /**
     * Constructs update status data.
     *
     * @param \Drupal\update\UpdateManagerInterface $update_manager
     *   Update Manager Service.
     */
    public function __construct(UpdateManagerInterface $update_manager) {
        $this->updateManager = $update_manager;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('update.manager'));
    }
    
    /**
     * Returns a page about the update status of projects.
     *
     * @return array
     *   A build array with the update status of projects.
     */
    public function updateStatus() {
        $build = [
            '#theme' => 'update_report',
        ];
        if ($available = update_get_available(TRUE)) {
            $this->moduleHandler()
                ->loadInclude('update', 'compare.inc');
            $build['#data'] = update_calculate_project_data($available);
        }
        return $build;
    }
    
    /**
     * Manually checks the update status without the use of cron.
     */
    public function updateStatusManually() {
        $this->updateManager
            ->refreshUpdateData();
        $batch = [
            'operations' => [
                [
                    [
                        $this->updateManager,
                        'fetchDataBatch',
                    ],
                    [],
                ],
            ],
            'finished' => 'update_fetch_data_finished',
            'title' => t('Checking available update data'),
            'progress_message' => t('Trying to check available update data ...'),
            'error_message' => t('Error checking available update data.'),
        ];
        batch_set($batch);
        return batch_process('admin/reports/updates');
    }

}