+<?php
+
+namespace Drupal\config\Form;
+
+use Drupal\Core\Config\ConfigImporterException;
+use Drupal\Core\Config\ConfigImporter;
+use Drupal\Core\Config\TypedConfigManagerInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Extension\ModuleInstallerInterface;
+use Drupal\Core\Extension\ThemeHandlerInterface;
+use Drupal\Core\Config\ConfigManagerInterface;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Config\StorageInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Lock\LockBackendInterface;
+use Drupal\Core\Config\StorageComparer;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\Url;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Construct the storage changes in a configuration synchronization form.
+ */
+class ConfigSync extends FormBase {
+
+ /**
+ * The database lock object.
+ *
+ * @var \Drupal\Core\Lock\LockBackendInterface
+ */
+ protected $lock;
+
+ /**
+ * The sync configuration object.
+ *
+ * @var \Drupal\Core\Config\StorageInterface
+ */
+ protected $syncStorage;
+
+ /**
+ * The active configuration object.
+ *
+ * @var \Drupal\Core\Config\StorageInterface
+ */
+ protected $activeStorage;
+
+ /**
+ * The snapshot configuration object.
+ *
+ * @var \Drupal\Core\Config\StorageInterface
+ */
+ protected $snapshotStorage;
+
+ /**
+ * Event dispatcher.
+ *
+ * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
+ */
+ protected $eventDispatcher;
+
+ /**
+ * The configuration manager.
+ *
+ * @var \Drupal\Core\Config\ConfigManagerInterface;
+ */
+ protected $configManager;
+
+ /**
+ * The typed config manager.
+ *
+ * @var \Drupal\Core\Config\TypedConfigManagerInterface
+ */
+ protected $typedConfigManager;
+
+ /**
+ * The module handler.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ /**
+ * The theme handler.
+ *
+ * @var \Drupal\Core\Extension\ThemeHandlerInterface
+ */
+ protected $themeHandler;
+
+ /**
+ * The module installer.
+ *
+ * @var \Drupal\Core\Extension\ModuleInstallerInterface
+ */
+ protected $moduleInstaller;
+
+ /**
+ * The renderer.
+ *
+ * @var \Drupal\Core\Render\RendererInterface
+ */
+ protected $renderer;
+
+ /**
+ * Constructs the object.
+ *
+ * @param \Drupal\Core\Config\StorageInterface $sync_storage
+ * The source storage.
+ * @param \Drupal\Core\Config\StorageInterface $active_storage
+ * The target storage.
+ * @param \Drupal\Core\Config\StorageInterface $snapshot_storage
+ * The snapshot storage.
+ * @param \Drupal\Core\Lock\LockBackendInterface $lock
+ * The lock object.
+ * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
+ * Event dispatcher.
+ * @param \Drupal\Core\Config\ConfigManagerInterface $config_manager
+ * Configuration manager.
+ * @param \Drupal\Core\Config\TypedConfigManagerInterface $typed_config
+ * The typed configuration manager.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler.
+ * @param \Drupal\Core\Extension\ModuleInstallerInterface $module_installer
+ * The module installer.
+ * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
+ * The theme handler.
+ * @param \Drupal\Core\Render\RendererInterface $renderer
+ * The renderer.
+ */
+ public function __construct(StorageInterface $sync_storage, StorageInterface $active_storage, StorageInterface $snapshot_storage, LockBackendInterface $lock, EventDispatcherInterface $event_dispatcher, ConfigManagerInterface $config_manager, TypedConfigManagerInterface $typed_config, ModuleHandlerInterface $module_handler, ModuleInstallerInterface $module_installer, ThemeHandlerInterface $theme_handler, RendererInterface $renderer) {
+ $this->syncStorage = $sync_storage;
+ $this->activeStorage = $active_storage;
+ $this->snapshotStorage = $snapshot_storage;
+ $this->lock = $lock;
+ $this->eventDispatcher = $event_dispatcher;
+ $this->configManager = $config_manager;
+ $this->typedConfigManager = $typed_config;
+ $this->moduleHandler = $module_handler;
+ $this->moduleInstaller = $module_installer;
+ $this->themeHandler = $theme_handler;
+ $this->renderer = $renderer;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('config.storage.sync'),
+ $container->get('config.storage'),
+ $container->get('config.storage.snapshot'),
+ $container->get('lock.persistent'),
+ $container->get('event_dispatcher'),
+ $container->get('config.manager'),
+ $container->get('config.typed'),
+ $container->get('module_handler'),
+ $container->get('module_installer'),
+ $container->get('theme_handler'),
+ $container->get('renderer')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'config_admin_import_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $form['actions'] = ['#type' => 'actions'];
+ $form['actions']['submit'] = [
+ '#type' => 'submit',
+ '#value' => $this->t('Import all'),
+ ];
+ $source_list = $this->syncStorage->listAll();
+ $storage_comparer = new StorageComparer($this->syncStorage, $this->activeStorage, $this->configManager);
+ if (empty($source_list) || !$storage_comparer->createChangelist()->hasChanges()) {
+ $form['no_changes'] = [
+ '#type' => 'table',
+ '#header' => [$this->t('Name'), $this->t('Operations')],
+ '#rows' => [],
+ '#empty' => $this->t('There are no configuration changes to import.'),
+ ];
+ $form['actions']['#access'] = FALSE;
+ return $form;
+ }
+ elseif (!$storage_comparer->validateSiteUuid()) {
+ drupal_set_message($this->t('The staged configuration cannot be imported, because it originates from a different site than this site. You can only synchronize configuration between cloned instances of this site.'), 'error');
+ $form['actions']['#access'] = FALSE;
+ return $form;
+ }
+ // A list of changes will be displayed, so check if the user should be
+ // warned of potential losses to configuration.
+ if ($this->snapshotStorage->exists('core.extension')) {
+ $snapshot_comparer = new StorageComparer($this->activeStorage, $this->snapshotStorage, $this->configManager);
+ if (!$form_state->getUserInput() && $snapshot_comparer->createChangelist()->hasChanges()) {
+ $change_list = [];
+ foreach ($snapshot_comparer->getAllCollectionNames() as $collection) {
+ foreach ($snapshot_comparer->getChangelist(NULL, $collection) as $config_names) {
+ if (empty($config_names)) {
+ continue;
+ }
+ foreach ($config_names as $config_name) {
+ $change_list[] = $config_name;
+ }
+ }
+ }
+ sort($change_list);
+ $message = [
+ [
+ '#markup' => $this->t('The following items in your active configuration have changes since the last import that may be lost on the next import.')
+ ],
+ [
+ '#theme' => 'item_list',
+ '#items' => $change_list,
+ ]
+ ];
+ drupal_set_message($this->renderer->renderPlain($message), 'warning');
+ }
+ }
+
+ // Store the comparer for use in the submit.
+ $form_state->set('storage_comparer', $storage_comparer);
+
+ // Add the AJAX library to the form for dialog support.
+ $form['#attached']['library'][] = 'core/drupal.dialog.ajax';
+
+ foreach ($storage_comparer->getAllCollectionNames() as $collection) {
+ if ($collection != StorageInterface::DEFAULT_COLLECTION) {
+ $form[$collection]['collection_heading'] = [
+ '#type' => 'html_tag',
+ '#tag' => 'h2',
+ '#value' => $this->t('@collection configuration collection', ['@collection' => $collection]),
+ ];
+ }
+ foreach ($storage_comparer->getChangelist(NULL, $collection) as $config_change_type => $config_names) {
+ if (empty($config_names)) {
+ continue;
+ }
+
+ // @todo A table caption would be more appropriate, but does not have the
+ // visual importance of a heading.
+ $form[$collection][$config_change_type]['heading'] = [
+ '#type' => 'html_tag',
+ '#tag' => 'h3',
+ ];
+ switch ($config_change_type) {
+ case 'create':
+ $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count new', '@count new');
+ break;
+
+ case 'update':
+ $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count changed', '@count changed');
+ break;
+
+ case 'delete':
+ $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count removed', '@count removed');
+ break;
+
+ case 'rename':
+ $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count renamed', '@count renamed');
+ break;
+ }
+ $form[$collection][$config_change_type]['list'] = [
+ '#type' => 'table',
+ '#header' => [$this->t('Name'), $this->t('Operations')],
+ ];
+
+ foreach ($config_names as $config_name) {
+ if ($config_change_type == 'rename') {
+ $names = $storage_comparer->extractRenameNames($config_name);
+ $route_options = ['source_name' => $names['old_name'], 'target_name' => $names['new_name']];
+ $config_name = $this->t('@source_name to @target_name', ['@source_name' => $names['old_name'], '@target_name' => $names['new_name']]);
+ }
+ else {
+ $route_options = ['source_name' => $config_name];
+ }
+ if ($collection != StorageInterface::DEFAULT_COLLECTION) {
+ $route_name = 'config.diff_collection';
+ $route_options['collection'] = $collection;
+ }
+ else {
+ $route_name = 'config.diff';
+ }
+ $links['view_diff'] = [
+ 'title' => $this->t('View differences'),
+ 'url' => Url::fromRoute($route_name, $route_options),
+ 'attributes' => [
+ 'class' => ['use-ajax'],
+ 'data-dialog-type' => 'modal',
+ 'data-dialog-options' => json_encode([
+ 'width' => 700
+ ]),
+ ],
+ ];
+ $form[$collection][$config_change_type]['list']['#rows'][] = [
+ 'name' => $config_name,
+ 'operations' => [
+ 'data' => [
+ '#type' => 'operations',
+ '#links' => $links,
+ ],
+ ],
+ ];
+ }
+ }
+ }
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $config_importer = new ConfigImporter(
+ $form_state->get('storage_comparer'),
+ $this->eventDispatcher,
+ $this->configManager,
+ $this->lock,
+ $this->typedConfigManager,
+ $this->moduleHandler,
+ $this->moduleInstaller,
+ $this->themeHandler,
+ $this->getStringTranslation()
+ );
+ if ($config_importer->alreadyImporting()) {
+ drupal_set_message($this->t('Another request may be synchronizing configuration already.'));
+ }
+ else {
+ try {
+ $sync_steps = $config_importer->initialize();
+ $batch = [
+ 'operations' => [],
+ 'finished' => [get_class($this), 'finishBatch'],
+ 'title' => t('Synchronizing configuration'),
+ 'init_message' => t('Starting configuration synchronization.'),
+ 'progress_message' => t('Completed step @current of @total.'),
+ 'error_message' => t('Configuration synchronization has encountered an error.'),
+ 'file' => __DIR__ . '/../../config.admin.inc',
+ ];
+ foreach ($sync_steps as $sync_step) {
+ $batch['operations'][] = [[get_class($this), 'processBatch'], [$config_importer, $sync_step]];
+ }
+
+ batch_set($batch);
+ }
+ catch (ConfigImporterException $e) {
+ // There are validation errors.
+ drupal_set_message($this->t('The configuration cannot be imported because it failed validation for the following reasons:'), 'error');
+ foreach ($config_importer->getErrors() as $message) {
+ drupal_set_message($message, 'error');
+ }
+ }
+ }
+ }
+
+ /**
+ * Processes the config import batch and persists the importer.
+ *
+ * @param \Drupal\Core\Config\ConfigImporter $config_importer
+ * The batch config importer object to persist.
+ * @param string $sync_step
+ * The synchronization step to do.
+ * @param array $context
+ * The batch context.
+ */
+ public static function processBatch(ConfigImporter $config_importer, $sync_step, &$context) {
+ if (!isset($context['sandbox']['config_importer'])) {
+ $context['sandbox']['config_importer'] = $config_importer;
+ }
+
+ $config_importer = $context['sandbox']['config_importer'];
+ $config_importer->doSyncStep($sync_step, $context);
+ if ($errors = $config_importer->getErrors()) {
+ if (!isset($context['results']['errors'])) {
+ $context['results']['errors'] = [];
+ }
+ $context['results']['errors'] += $errors;
+ }
+ }
+
+ /**
+ * Finish batch.
+ *
+ * This function is a static function to avoid serializing the ConfigSync
+ * object unnecessarily.
+ */
+ public static function finishBatch($success, $results, $operations) {
+ if ($success) {
+ if (!empty($results['errors'])) {
+ foreach ($results['errors'] as $error) {
+ drupal_set_message($error, 'error');
+ \Drupal::logger('config_sync')->error($error);
+ }
+ drupal_set_message(\Drupal::translation()->translate('The configuration was imported with errors.'), 'warning');
+ }
+ else {
+ drupal_set_message(\Drupal::translation()->translate('The configuration was imported successfully.'));
+ }
+ }
+ else {
+ // An error occurred.
+ // $operations contains the operations that remained unprocessed.
+ $error_operation = reset($operations);
+ $message = \Drupal::translation()->translate('An error occurred while processing %error_operation with arguments: @arguments', ['%error_operation' => $error_operation[0], '@arguments' => print_r($error_operation[1], TRUE)]);
+ drupal_set_message($message, 'error');
+ }
+ }
+
+}