Preload services

Bootstraps/Symfony.php

@@ -3,6 +3,7 @@
 namespace PHPPM\Bootstraps;
 
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\KernelInterface;
 
 /**
  * A default bootstrap for the Symfony framework
@@ -59,6 +60,7 @@ public function getApplication()
         $request = new Request();
         $request->setMethod(Request::METHOD_HEAD);
         $app->handle($request);
+        $this->preloadServices($app);
 
         return $app;
     }
@@ -98,4 +100,23 @@ public function postHandle($app)
             $app->getContainer()->get('profiler')->enable();
         }
     }
+
+    /**
+     * Instantiate all services in the Dependency Injection Container.
+     *
+     * Stateless (shared) services in the Dependency Injection Container will be
+     * instantiated once by the first Request that require them, and then their
+     * instance will be reused in all other Requests.
+     * This also allows to "warm up" part of autoloading.
+     *
+     * @param KernelInterface $kernel
+     */
+    protected function preloadServices(KernelInterface $kernel)
+    {
+        $kernel->boot();
+        $container = $kernel->getContainer();
+        foreach ($container->getServiceIds() as $serviceId) {
+            $container->get($serviceId);
+        }
+    }
 }