[Messenger] Allow AsMessageHandler attribute on methods

Author: mjpvandenberg

DependencyInjection/FrameworkExtension.php

@@ -622,11 +622,16 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerAttributeForAutoconfiguration(AsController::class, static function (ChildDefinition $definition, AsController $attribute): void {
             $definition->addTag('controller.service_arguments');
         });
-        $container->registerAttributeForAutoconfiguration(AsMessageHandler::class, static function (ChildDefinition $definition, AsMessageHandler $attribute): void {
+        $container->registerAttributeForAutoconfiguration(AsMessageHandler::class, static function (ChildDefinition $definition, AsMessageHandler $attribute, \ReflectionClass|\ReflectionMethod $reflector): void {
             $tagAttributes = get_object_vars($attribute);
             $tagAttributes['from_transport'] = $tagAttributes['fromTransport'];
             unset($tagAttributes['fromTransport']);
-
+            if ($reflector instanceof \ReflectionMethod) {
+                if (isset($tagAttributes['method'])) {
+                    throw new LogicException(sprintf('AsMessageHandler attribute cannot declare a method on "%s::%s()".', $reflector->class, $reflector->name));
+                }
+                $tagAttributes['method'] = $reflector->getName();
+            }
             $definition->addTag('messenger.message_handler', $tagAttributes);
         });