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MessengerPass.php
146 lines (120 loc) · 6.19 KB
/
MessengerPass.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Messenger\DependencyInjection;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\Compiler\PriorityTaggedServiceTrait;
use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\Messenger\Handler\ChainHandler;
/**
* @author Samuel Roze <samuel.roze@gmail.com>
*/
class MessengerPass implements CompilerPassInterface
{
use PriorityTaggedServiceTrait;
private $messageBusService;
private $messageHandlerResolverService;
private $handlerTag;
public function __construct(string $messageBusService = 'message_bus', string $messageHandlerResolverService = 'messenger.handler_resolver', string $handlerTag = 'messenger.message_handler')
{
$this->messageBusService = $messageBusService;
$this->messageHandlerResolverService = $messageHandlerResolverService;
$this->handlerTag = $handlerTag;
}
/**
* {@inheritdoc}
*/
public function process(ContainerBuilder $container)
{
if (!$container->hasDefinition($this->messageBusService)) {
return;
}
if (!$container->getParameter('kernel.debug') || !$container->has('logger')) {
$container->removeDefinition('messenger.middleware.debug.logging');
}
if (!$container->has('serializer')) {
$container->removeDefinition('messenger.transport.serialize_message_with_type_in_headers');
$container->removeAlias('messenger.transport.default_encoder');
$container->removeAlias('messenger.transport.default_decoder');
}
$this->registerReceivers($container);
$this->registerHandlers($container);
}
private function registerHandlers(ContainerBuilder $container)
{
$handlersByMessage = array();
foreach ($container->findTaggedServiceIds($this->handlerTag, true) as $serviceId => $tags) {
foreach ($tags as $tag) {
$handles = $tag['handles'] ?? $this->guessHandledClass($r = $container->getReflectionClass($container->getParameterBag()->resolveValue($container->getDefinition($serviceId)->getClass())), $serviceId);
if (!class_exists($handles)) {
$messageClassLocation = isset($tag['handles']) ? 'declared in your tag attribute "handles"' : sprintf('used as argument type in method "%s::__invoke()"', $r->getName());
throw new RuntimeException(sprintf('Invalid handler service "%s": message class "%s" %s does not exist.', $serviceId, $handles, $messageClassLocation));
}
$priority = $tag['priority'] ?? 0;
$handlersByMessage[$handles][$priority][] = new Reference($serviceId);
}
}
foreach ($handlersByMessage as $message => $handlers) {
krsort($handlersByMessage[$message]);
$handlersByMessage[$message] = call_user_func_array('array_merge', $handlersByMessage[$message]);
}
$definitions = array();
foreach ($handlersByMessage as $message => $handlers) {
if (1 === count($handlers)) {
$handlersByMessage[$message] = current($handlers);
} else {
$d = new Definition(ChainHandler::class, array($handlers));
$d->setPrivate(true);
$serviceId = hash('sha1', $message);
$definitions[$serviceId] = $d;
$handlersByMessage[$message] = new Reference($serviceId);
}
}
$container->addDefinitions($definitions);
$handlersLocatorMapping = array();
foreach ($handlersByMessage as $message => $handler) {
$handlersLocatorMapping['handler.'.$message] = $handler;
}
$handlerResolver = $container->getDefinition($this->messageHandlerResolverService);
$handlerResolver->replaceArgument(0, ServiceLocatorTagPass::register($container, $handlersLocatorMapping));
}
private function guessHandledClass(\ReflectionClass $handlerClass, string $serviceId): string
{
try {
$method = $handlerClass->getMethod('__invoke');
} catch (\ReflectionException $e) {
throw new RuntimeException(sprintf('Invalid handler service "%s": class "%s" must have an "__invoke()" method.', $serviceId, $handlerClass->getName()));
}
$parameters = $method->getParameters();
if (1 !== count($parameters)) {
throw new RuntimeException(sprintf('Invalid handler service "%s": method "%s::__invoke()" must have exactly one argument corresponding to the message it handles.', $serviceId, $handlerClass->getName()));
}
if (!$type = $parameters[0]->getType()) {
throw new RuntimeException(sprintf('Invalid handler service "%s": argument "$%s" of method "%s::__invoke()" must have a type-hint corresponding to the message class it handles.', $serviceId, $parameters[0]->getName(), $handlerClass->getName()));
}
if ($type->isBuiltin()) {
throw new RuntimeException(sprintf('Invalid handler service "%s": type-hint of argument "$%s" in method "%s::__invoke()" must be a class , "%s" given.', $serviceId, $parameters[0]->getName(), $handlerClass->getName(), $type));
}
return $parameters[0]->getType();
}
private function registerReceivers(ContainerBuilder $container)
{
$receiverMapping = array();
foreach ($container->findTaggedServiceIds('messenger.receiver') as $id => $tags) {
foreach ($tags as $tag) {
$receiverMapping[$tag['id'] ?? $id] = new Reference($id);
}
}
$container->getDefinition('messenger.receiver_locator')->replaceArgument(0, $receiverMapping);
}
}