Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/update/src/Controller/UpdateController.php

@@ -0,0 +1,80 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\update\Controller\UpdateController.
+ */
+
+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() {
+    $build = array(
+      '#theme' => 'update_report'
+    );
+    if ($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();
+    $batch = array(
+      'operations' => array(
+        array(array($this->updateManager, 'fetchDataBatch'), array()),
+      ),
+      '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');
+  }
+
+}