3 namespace Drupal\Core\DependencyInjection\Compiler;
5 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
6 use Symfony\Component\DependencyInjection\ContainerBuilder;
7 use Symfony\Component\DependencyInjection\Reference;
10 * Provides a compiler pass for stacked session save handlers.
12 class StackedSessionHandlerPass implements CompilerPassInterface {
17 public function process(ContainerBuilder $container) {
19 if ($container->hasDefinition('session_handler')) {
23 $session_handler_proxies = [];
26 foreach ($container->findTaggedServiceIds('session_handler_proxy') as $id => $attributes) {
27 $priorities[$id] = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
28 $session_handler_proxies[$id] = $container->getDefinition($id);
31 array_multisort($priorities, SORT_ASC, $session_handler_proxies);
33 $decorated_id = 'session_handler.storage';
34 foreach ($session_handler_proxies as $id => $decorator) {
35 // Prepend the inner session handler as first constructor argument.
36 $arguments = $decorator->getArguments();
37 array_unshift($arguments, new Reference($decorated_id));
38 $decorator->setArguments($arguments);
43 $container->setAlias('session_handler', $decorated_id);