diff core/lib/Drupal/Core/DependencyInjection/DependencySerializationTrait.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/DependencyInjection/DependencySerializationTrait.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,66 @@
+<?php
+
+namespace Drupal\Core\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides dependency injection friendly methods for serialization.
+ */
+trait DependencySerializationTrait {
+
+  /**
+   * An array of service IDs keyed by property name used for serialization.
+   *
+   * @var array
+   */
+  protected $_serviceIds = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __sleep() {
+    $this->_serviceIds = [];
+    $vars = get_object_vars($this);
+    foreach ($vars as $key => $value) {
+      if (is_object($value) && isset($value->_serviceId)) {
+        // If a class member was instantiated by the dependency injection
+        // container, only store its ID so it can be used to get a fresh object
+        // on unserialization.
+        $this->_serviceIds[$key] = $value->_serviceId;
+        unset($vars[$key]);
+      }
+      // Special case the container, which might not have a service ID.
+      elseif ($value instanceof ContainerInterface) {
+        $this->_serviceIds[$key] = 'service_container';
+        unset($vars[$key]);
+      }
+    }
+
+    return array_keys($vars);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __wakeup() {
+    // Tests in isolation potentially unserialize in the parent process.
+    $phpunit_bootstrap = isset($GLOBALS['__PHPUNIT_BOOTSTRAP']);
+    if ($phpunit_bootstrap && !\Drupal::hasContainer()) {
+      return;
+    }
+    $container = \Drupal::getContainer();
+    foreach ($this->_serviceIds as $key => $service_id) {
+      // In rare cases, when test data is serialized in the parent process,
+      // there is a service container but it doesn't contain all expected
+      // services. To avoid fatal errors during the wrap-up of failing tests, we
+      // check for this case, too.
+      if ($phpunit_bootstrap && !$container->has($service_id)) {
+        continue;
+      }
+      $this->$key = $container->get($service_id);
+    }
+    $this->_serviceIds = [];
+  }
+
+}