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Mission Impossible: Symfony components in Drupal 7

Mission Impossible: Symfony components in Drupal 7

I am going to share my experience with introducing Symfony components into Drupal 7. Learn how to incorporate components like HttpKernel, DependencyInjection or Configuration to bring modern tools and practices into an outdated project.

Marek Matulka

March 18, 2015
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  1. at

  2. Background Magento platform: - old version - full of custom

    modifications - basic CMS platform - limited budget
  3. Requirement CMS - manage corporate website - manage other brands’

    websites - build seasonal microsites - integrate with Magento store
  4. Why Drupal? - open source CMS - easy to install

    and manage - most required functionality available out of the box - easy to extend - easy to theme - limited budget
  5. Kernel public function boot() { $this->container = new ContainerBuilder(); $loader

    = new YamlFileLoader($this->container, new FileLocator('app/config')); $loader->load('parameters.yml'); $this->container->compile(); }
  6. Kernel public function boot() { $this->container = new ContainerBuilder(); $loader

    = new YamlFileLoader($this->container, new FileLocator('app/config')); $loader->load('parameters.yml'); $loader = new XmlFileLoader($this->container, new FileLocator('app/config')); $loader->load('services.xml'); $this->container->compile(); }
  7. Kernel public function boot() { $this->container = new ContainerBuilder(); $loader

    = new YamlFileLoader($this->container, new FileLocator('app/config')); $loader->load('parameters.yml'); $loader = new XmlFileLoader($this->container, new FileLocator('app/config')); $loader->load('services.xml'); $this->container->registerExtension(new ApplicationExtension()); $this->container->compile(); }
  8. Kernel public function boot() { $this->container = $this->buildContainer(); } /**

    * @return ContainerBuilder */ private function buildContainer() { $container = new ContainerBuilder(); $loader = new YamlFileLoader($container, new FileLocator('app/config')); $loader->load('parameters.yml'); $loader = new XmlFileLoader($container, new FileLocator('app/config')); $loader->load('services.xml'); $container->registerExtension(new ApplicationExtension()); $container->compile(); return $container; }
  9. Kernel public function boot() { if (file_exists($this->cachedContainerFileName)) { require $this->cachedContainerFileName;

    $this->container = new ProjectServiceContainer(); } else { $container = $this->buildContainer(); $dumper = new PhpDumper($container); file_put_contents($this->cachedContainerFileName, $dumper->dump()); $this->container = $container; } }
  10. Kernel public function boot() { if (file_exists($this->cachedContainerFileName)) { require $this->cachedContainerFileName;

    $this->container = new ProjectServiceContainer(); } else { $container = $this->buildContainer(); if ('dev' !== $container->getParameter('environment')) { $dumper = new PhpDumper($container); file_put_contents($this->cachedContainerFileName, $dumper->dump()); } $this->container = $container; } }
  11. parameters.yml application: database: name: acme-dev username: acme-dev password: S0m3R4nD0mP455 host:

    localhost port: ~ soap_client: wsdl: https://api.store.local/v1/?wsdl http_auth_username: acme-dev http_auth_password: S0m3R4nD0mP455 username: acme-dev-user api_key: R4nD0mAp1K3y product_hydrator: product_url_snippet: http://store.local/product/{sku} product_image_url: http://store.local/media/catalog/product/uploads/
  12. Import Handler class ImportAndPersistActionHandler { /** * @param ProductImporter $importer

    * @param ProductPersister $persister */ public function __construct(ProductImporter $importer, ProductPersister $persister) { $this->importer = $importer; $this->persister = $persister; } public function importAndPersistProducts() { $productsList = $this->importer->importProducts(); $this->persister->saveAll($productsList); } }
  13. Console command class ImportAndPersistCommand extends Command { public function __construct(ImportAndPersistActionHandler

    $action) { $this->action = $action; parent::__construct(); } protected function configure() { $this->setName('products:import'); } protected function execute(InputInterface $input, OutputInterface $output) { $startTime = microtime(true); $this->action->importAndPersistProducts(); $output->writeln( sprintf("Products import completed in %1.02fs.", microtime(true) - $startTime) ); } }
  14. app/console #!/usr/bin/php <?php require_once (__DIR__ . '/../vendor/autoload.php'); use Acme\Application\Kernel; use

    Symfony\Component\Console\Application; $kernel = new Kernel(); $kernel->boot(); $application = new Application(); $application->addCommands([ $kernel->getContainer()->get('acme.command.import_products'), $kernel->getContainer()->get('acme.command.delete_products'), $kernel->getContainer()->get('acme.command.depot_locate'), ]); $application->run();
  15. XML Writer class ProductXmlWriter implements ProductPersister { /** * @param

    Filesystem $filesystem * @param string $fileName */ public function __construct(Filesystem $filesystem, string $fileName) { $this->filesystem = $filesystem; $this->fileName = $fileName; } /** * @param ProductList $productList */ public function saveAll(ProductList $productList) { $this->filesystem->dumpFile($this->fileName, $this->renderXml($productList)); } }
  16. Why write XML? - fetching data from Magento and dumping

    it into xml file is quick - xml can be imported by Drupal’s feed importer
  17. Why it didn’t work? - Feed importer was damn slow

    - 10k products imported in 4.5h - Scheduling import with Elysia Cron module was flaky - Scheduled feed importer would add products all over again - resources hungry!
  18. Direct save to the db class DatabaseProductPersister implements ProductPersister {

    private $repository; /** * @param ProductRepository $repository */ public function __construct(ProductRepository $repository) { $this->repository = $repository; } public function saveAll(ProductList $productList) { foreach ($productList as $product) { $this->repository->save($product); } } }
  19. Why direct save to the db? - Drupal promises data

    structure won’t ever change - It’s fast - 40k products in 2 minutes - It works!
  20. composer.json "require": { "php": ">=5.4.0", "symfony/console": "~2.5", "drush/drush": "7.*@dev", "symfony/finder":

    "~2.5", "symfony/dependency-injection": "~2.5", "symfony/config": "~2.5", "symfony/filesystem": "~2.6", "doctrine/dbal": "~2.5", "rhumsaa/uuid": "~2.8" },
  21. database.php $databases = [ 'default' => [ 'default' => [

    'database' => $conf['di_container']->getParameter('database.name'), 'username' => $conf['di_container']->getParameter('database.username'), 'password' => $conf['di_container']->getParameter('database.password'), 'host' => $conf['di_container']->getParameter('database.host'), 'port' => $conf['di_container']->getParameter('database.port'), 'driver' => 'mysql', 'prefix' => '', ], ], ];