Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\Installer;
Chris@0: 
Chris@0: use Drupal\Core\DependencyInjection\ContainerBuilder;
Chris@0: use Drupal\Core\DependencyInjection\ServiceProviderInterface;
Chris@0: use Drupal\Core\DependencyInjection\ServiceModifierInterface;
Chris@0: use Symfony\Component\DependencyInjection\Reference;
Chris@0: 
Chris@0: /**
Chris@0:  * Service provider for the early installer environment.
Chris@0:  *
Chris@0:  * This class is manually added by install_begin_request() via
Chris@0:  * $conf['container_service_providers'] and required to prevent various services
Chris@0:  * from trying to retrieve data from storages that do not exist yet.
Chris@0:  */
Chris@0: class InstallerServiceProvider implements ServiceProviderInterface, ServiceModifierInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function register(ContainerBuilder $container) {
Chris@0:     // Inject the special configuration storage for the installer.
Chris@0:     // This special implementation MUST NOT be used anywhere else than the early
Chris@0:     // installer environment.
Chris@0:     $container->register('config.storage', 'Drupal\Core\Config\InstallStorage');
Chris@0: 
Chris@0:     // Replace services with in-memory implementations.
Chris@0:     $definition = $container->getDefinition('cache_factory');
Chris@0:     $definition->setClass('Drupal\Core\Cache\MemoryBackendFactory');
Chris@0:     $definition->setArguments([]);
Chris@0:     $definition->setMethodCalls([]);
Chris@0:     $container
Chris@0:       ->register('keyvalue', 'Drupal\Core\KeyValueStore\KeyValueMemoryFactory');
Chris@0:     $container
Chris@0:       ->register('keyvalue.expirable', 'Drupal\Core\KeyValueStore\KeyValueNullExpirableFactory');
Chris@0: 
Chris@0:     // Replace services with no-op implementations.
Chris@0:     $container
Chris@0:       ->register('lock', 'Drupal\Core\Lock\NullLockBackend');
Chris@0:     $container
Chris@0:       ->register('url_generator', 'Drupal\Core\Routing\NullGenerator')
Chris@0:       ->addArgument(new Reference('request_stack'));
Chris@0:     $container
Chris@0:       ->register('path_processor_manager', 'Drupal\Core\PathProcessor\NullPathProcessorManager');
Chris@0:     $container
Chris@0:       ->register('router.dumper', 'Drupal\Core\Routing\NullMatcherDumper');
Chris@0: 
Chris@0:     // Remove the cache tags invalidator tag from the cache tags storage, so
Chris@0:     // that we don't call it when cache tags are invalidated very early in the
Chris@0:     // installer.
Chris@0:     $container->getDefinition('cache_tags.invalidator.checksum')
Chris@0:       ->clearTag('cache_tags_invalidator');
Chris@0: 
Chris@0:     // Replace the route builder with an empty implementation.
Chris@0:     // @todo Convert installer steps into routes; add an installer.routing.yml.
Chris@0:     $definition = $container->getDefinition('router.builder');
Chris@0:     $definition->setClass('Drupal\Core\Installer\InstallerRouteBuilder')
Chris@0:       // The core router builder, but there is no reason here to be lazy, so
Chris@0:       // we don't need to ship with a custom proxy class.
Chris@0:       ->setLazy(FALSE);
Chris@17: 
Chris@17:     // Use a performance optimised module extension list.
Chris@17:     $container->getDefinition('extension.list.module')->setClass('Drupal\Core\Installer\InstallerModuleExtensionList');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function alter(ContainerBuilder $container) {
Chris@0:     // Disable Twig cache (php storage does not exist yet).
Chris@0:     $twig_config = $container->getParameter('twig.config');
Chris@0:     $twig_config['cache'] = FALSE;
Chris@0:     $container->setParameter('twig.config', $twig_config);
Chris@0: 
Chris@0:     // No service may persist when the early installer kernel is rebooted into
Chris@0:     // the production environment.
Chris@0:     // @todo The DrupalKernel reboot performed by drupal_install_system() is
Chris@0:     //   actually not a "regular" reboot (like ModuleInstaller::install()), so
Chris@0:     //   services are not actually persisted.
Chris@0:     foreach ($container->findTaggedServiceIds('persist') as $id => $tags) {
Chris@0:       $definition = $container->getDefinition($id);
Chris@0:       $definition->clearTag('persist');
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0: }