--- /dev/null
+<?php
+
+namespace Drupal\system\Form;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\CronInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\State\StateInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Form\ConfigFormBaseTrait;
+
+/**
+ * Configure cron settings for this site.
+ */
+class CronForm extends FormBase {
+ use ConfigFormBaseTrait;
+
+ /**
+ * Stores the state storage service.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $state;
+
+ /**
+ * The cron service.
+ *
+ * @var \Drupal\Core\CronInterface
+ */
+ protected $cron;
+
+ /**
+ * The date formatter service.
+ *
+ * @var \Drupal\Core\Datetime\DateFormatterInterface
+ */
+ protected $dateFormatter;
+
+ /**
+ * The module handler service.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface $moduleHandler
+ */
+ protected $moduleHandler;
+
+ /**
+ * Constructs a CronForm object.
+ *
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The factory for configuration objects.
+ * @param \Drupal\Core\State\StateInterface $state
+ * The state key value store.
+ * @param \Drupal\Core\CronInterface $cron
+ * The cron service.
+ * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+ * The date formatter service.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler service.
+ */
+ public function __construct(ConfigFactoryInterface $config_factory, StateInterface $state, CronInterface $cron, DateFormatterInterface $date_formatter, ModuleHandlerInterface $module_handler) {
+ $this->state = $state;
+ $this->cron = $cron;
+ $this->dateFormatter = $date_formatter;
+ $this->moduleHandler = $module_handler;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getEditableConfigNames() {
+ return ['system.cron'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('config.factory'),
+ $container->get('state'),
+ $container->get('cron'),
+ $container->get('date.formatter'),
+ $container->get('module_handler')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'system_cron_settings';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $form['description'] = [
+ '#markup' => '<p>' . t('Cron takes care of running periodic tasks like checking for updates and indexing content for search.') . '</p>',
+ ];
+ $form['run'] = [
+ '#type' => 'submit',
+ '#value' => t('Run cron'),
+ ];
+ $status = '<p>' . $this->t('Last run: %time ago.', ['%time' => $this->dateFormatter->formatTimeDiffSince($this->state->get('system.cron_last'))]) . '</p>';
+ $form['status'] = [
+ '#markup' => $status,
+ ];
+
+ $cron_url = $this->url('system.cron', ['key' => $this->state->get('system.cron_key')], ['absolute' => TRUE]);
+ $form['cron_url'] = [
+ '#markup' => '<p>' . t('To run cron from outside the site, go to <a href=":cron">@cron</a>', [':cron' => $cron_url, '@cron' => $cron_url]) . '</p>',
+ ];
+
+ if (!$this->moduleHandler->moduleExists('automated_cron')) {
+ $form['automated_cron'] = [
+ '#markup' => $this->t('Enable the <em>Automated Cron</em> module to allow cron execution at the end of a server response.'),
+ ];
+ }
+
+ $form['cron'] = [
+ '#title' => t('Cron settings'),
+ '#type' => 'details',
+ '#open' => TRUE,
+ ];
+
+ $form['cron']['logging'] = [
+ '#type' => 'checkbox',
+ '#title' => t('Detailed cron logging'),
+ '#default_value' => $this->config('system.cron')->get('logging'),
+ '#description' => 'Run times of individual cron jobs will be written to watchdog',
+ ];
+
+ $form['actions']['#type'] = 'actions';
+ $form['actions']['submit'] = [
+ '#type' => 'submit',
+ '#value' => t('Save configuration'),
+ '#button_type' => 'primary',
+ ];
+
+ return $form;
+ }
+
+ /**
+ * Runs cron and reloads the page.
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $this->config('system.cron')
+ ->set('logging', $form_state->getValue('logging'))
+ ->save();
+ drupal_set_message(t('The configuration options have been saved.'));
+
+ // Run cron manually from Cron form.
+ if ($this->cron->run()) {
+ drupal_set_message(t('Cron ran successfully.'));
+ }
+ else {
+ drupal_set_message(t('Cron run failed.'), 'error');
+ }
+
+ }
+
+}