Subida del módulo y tema de PrestaShop

vendor/symfony/messenger/Middleware/ActivationMiddleware.php

@@ -0,0 +1,40 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+
+/**
+ * Execute the inner middleware according to an activation strategy.
+ *
+ * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
+ */
+class ActivationMiddleware implements MiddlewareInterface
+{
+    private MiddlewareInterface $inner;
+    private \Closure|bool $activated;
+
+    public function __construct(MiddlewareInterface $inner, bool|callable $activated)
+    {
+        $this->inner = $inner;
+        $this->activated = \is_bool($activated) ? $activated : $activated(...);
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        if (\is_callable($this->activated) ? ($this->activated)($envelope) : $this->activated) {
+            return $this->inner->handle($envelope, $stack);
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}

vendor/symfony/messenger/Middleware/AddBusNameStampMiddleware.php

@@ -0,0 +1,39 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Stamp\BusNameStamp;
+
+/**
+ * Adds the BusNameStamp to the bus.
+ *
+ * @author Ryan Weaver <ryan@symfonycasts.com>
+ */
+class AddBusNameStampMiddleware implements MiddlewareInterface
+{
+    private string $busName;
+
+    public function __construct(string $busName)
+    {
+        $this->busName = $busName;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        if (null === $envelope->last(BusNameStamp::class)) {
+            $envelope = $envelope->with(new BusNameStamp($this->busName));
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}

vendor/symfony/messenger/Middleware/DispatchAfterCurrentBusMiddleware.php

@@ -0,0 +1,130 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Exception\DelayedMessageHandlingException;
+use Symfony\Component\Messenger\Stamp\DispatchAfterCurrentBusStamp;
+
+/**
+ * Allow to configure messages to be handled after the current bus is finished.
+ *
+ * I.e, messages dispatched from a handler with a DispatchAfterCurrentBus stamp
+ * will actually be handled once the current message being dispatched is fully
+ * handled.
+ *
+ * For instance, using this middleware before the DoctrineTransactionMiddleware
+ * means sub-dispatched messages with a DispatchAfterCurrentBus stamp would be
+ * handled after the Doctrine transaction has been committed.
+ *
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ */
+class DispatchAfterCurrentBusMiddleware implements MiddlewareInterface
+{
+    /**
+     * @var QueuedEnvelope[] A queue of messages and next middleware
+     */
+    private array $queue = [];
+
+    /**
+     * @var bool this property is used to signal if we are inside a the first/root call to
+     *           MessageBusInterface::dispatch() or if dispatch has been called inside a message handler
+     */
+    private bool $isRootDispatchCallRunning = false;
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        if (null !== $envelope->last(DispatchAfterCurrentBusStamp::class)) {
+            if ($this->isRootDispatchCallRunning) {
+                $this->queue[] = new QueuedEnvelope($envelope, $stack);
+
+                return $envelope;
+            }
+
+            $envelope = $envelope->withoutAll(DispatchAfterCurrentBusStamp::class);
+        }
+
+        if ($this->isRootDispatchCallRunning) {
+            /*
+             * A call to MessageBusInterface::dispatch() was made from inside the main bus handling,
+             * but the message does not have the stamp. So, process it like normal.
+             */
+            return $stack->next()->handle($envelope, $stack);
+        }
+
+        // First time we get here, mark as inside a "root dispatch" call:
+        $this->isRootDispatchCallRunning = true;
+        try {
+            // Execute the whole middleware stack & message handling for main dispatch:
+            $returnedEnvelope = $stack->next()->handle($envelope, $stack);
+        } catch (\Throwable $exception) {
+            /*
+             * Whenever an exception occurs while handling a message that has
+             * queued other messages, we drop the queued ones.
+             * This is intentional since the queued commands were likely dependent
+             * on the preceding command.
+             */
+            $this->queue = [];
+            $this->isRootDispatchCallRunning = false;
+
+            throw $exception;
+        }
+
+        // "Root dispatch" call is finished, dispatch stored messages.
+        $exceptions = [];
+        while (null !== $queueItem = array_shift($this->queue)) {
+            // Save how many messages are left in queue before handling the message
+            $queueLengthBefore = \count($this->queue);
+            try {
+                // Execute the stored messages
+                $queueItem->getStack()->next()->handle($queueItem->getEnvelope(), $queueItem->getStack());
+            } catch (\Exception $exception) {
+                // Gather all exceptions
+                $exceptions[] = $exception;
+                // Restore queue to previous state
+                $this->queue = \array_slice($this->queue, 0, $queueLengthBefore);
+            }
+        }
+
+        $this->isRootDispatchCallRunning = false;
+        if (\count($exceptions) > 0) {
+            throw new DelayedMessageHandlingException($exceptions, $returnedEnvelope);
+        }
+
+        return $returnedEnvelope;
+    }
+}
+
+/**
+ * @internal
+ */
+final class QueuedEnvelope
+{
+    private Envelope $envelope;
+    private StackInterface $stack;
+
+    public function __construct(Envelope $envelope, StackInterface $stack)
+    {
+        $this->envelope = $envelope->withoutAll(DispatchAfterCurrentBusStamp::class);
+        $this->stack = $stack;
+    }
+
+    public function getEnvelope(): Envelope
+    {
+        return $this->envelope;
+    }
+
+    public function getStack(): StackInterface
+    {
+        return $this->stack;
+    }
+}

vendor/symfony/messenger/Middleware/FailedMessageProcessingMiddleware.php

@@ -0,0 +1,36 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Stamp\ReceivedStamp;
+use Symfony\Component\Messenger\Stamp\SentToFailureTransportStamp;
+
+/**
+ * @author Ryan Weaver <ryan@symfonycasts.com>
+ */
+class FailedMessageProcessingMiddleware implements MiddlewareInterface
+{
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        // look for "received" messages decorated with the SentToFailureTransportStamp
+        /** @var SentToFailureTransportStamp|null $sentToFailureStamp */
+        $sentToFailureStamp = $envelope->last(SentToFailureTransportStamp::class);
+        if (null !== $sentToFailureStamp && null !== $envelope->last(ReceivedStamp::class)) {
+            // mark the message as "received" from the original transport
+            // this guarantees the same behavior as when originally received
+            $envelope = $envelope->with(new ReceivedStamp($sentToFailureStamp->getOriginalReceiverName()));
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}

vendor/symfony/messenger/Middleware/HandleMessageMiddleware.php

@@ -0,0 +1,154 @@
+<?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\Middleware;
+
+use Psr\Log\LoggerAwareTrait;
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Exception\HandlerFailedException;
+use Symfony\Component\Messenger\Exception\LogicException;
+use Symfony\Component\Messenger\Exception\NoHandlerForMessageException;
+use Symfony\Component\Messenger\Handler\Acknowledger;
+use Symfony\Component\Messenger\Handler\HandlerDescriptor;
+use Symfony\Component\Messenger\Handler\HandlersLocatorInterface;
+use Symfony\Component\Messenger\Stamp\AckStamp;
+use Symfony\Component\Messenger\Stamp\FlushBatchHandlersStamp;
+use Symfony\Component\Messenger\Stamp\HandledStamp;
+use Symfony\Component\Messenger\Stamp\HandlerArgumentsStamp;
+use Symfony\Component\Messenger\Stamp\NoAutoAckStamp;
+
+/**
+ * @author Samuel Roze <samuel.roze@gmail.com>
+ */
+class HandleMessageMiddleware implements MiddlewareInterface
+{
+    use LoggerAwareTrait;
+
+    public function __construct(
+        private HandlersLocatorInterface $handlersLocator,
+        private bool $allowNoHandlers = false,
+    ) {
+    }
+
+    /**
+     * @throws NoHandlerForMessageException When no handler is found and $allowNoHandlers is false
+     */
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        $handler = null;
+        $message = $envelope->getMessage();
+
+        $context = [
+            'class' => $message::class,
+        ];
+
+        $exceptions = [];
+        $alreadyHandled = false;
+        foreach ($this->handlersLocator->getHandlers($envelope) as $handlerDescriptor) {
+            if ($this->messageHasAlreadyBeenHandled($envelope, $handlerDescriptor)) {
+                $alreadyHandled = true;
+                continue;
+            }
+
+            try {
+                $handler = $handlerDescriptor->getHandler();
+                $batchHandler = $handlerDescriptor->getBatchHandler();
+
+                /** @var AckStamp $ackStamp */
+                if ($batchHandler && $ackStamp = $envelope->last(AckStamp::class)) {
+                    $ack = new Acknowledger(get_debug_type($batchHandler), static function (?\Throwable $e = null, $result = null) use ($envelope, $ackStamp, $handlerDescriptor) {
+                        if (null !== $e) {
+                            $e = new HandlerFailedException($envelope, [$handlerDescriptor->getName() => $e]);
+                        } else {
+                            $envelope = $envelope->with(HandledStamp::fromDescriptor($handlerDescriptor, $result));
+                        }
+
+                        $ackStamp->ack($envelope, $e);
+                    });
+
+                    $result = $this->callHandler($handler, $message, $ack, $envelope->last(HandlerArgumentsStamp::class));
+
+                    if (!\is_int($result) || 0 > $result) {
+                        throw new LogicException(\sprintf('A handler implementing BatchHandlerInterface must return the size of the current batch as a positive integer, "%s" returned from "%s".', \is_int($result) ? $result : get_debug_type($result), get_debug_type($batchHandler)));
+                    }
+
+                    if (!$ack->isAcknowledged()) {
+                        $envelope = $envelope->with(new NoAutoAckStamp($handlerDescriptor));
+                    } elseif ($ack->getError()) {
+                        throw $ack->getError();
+                    } else {
+                        $result = $ack->getResult();
+                    }
+                } else {
+                    $result = $this->callHandler($handler, $message, null, $envelope->last(HandlerArgumentsStamp::class));
+                }
+
+                $handledStamp = HandledStamp::fromDescriptor($handlerDescriptor, $result);
+                $envelope = $envelope->with($handledStamp);
+                $this->logger?->info('Message {class} handled by {handler}', $context + ['handler' => $handledStamp->getHandlerName()]);
+            } catch (\Throwable $e) {
+                $exceptions[$handlerDescriptor->getName()] = $e;
+            }
+        }
+
+        /** @var FlushBatchHandlersStamp $flushStamp */
+        if ($flushStamp = $envelope->last(FlushBatchHandlersStamp::class)) {
+            /** @var NoAutoAckStamp $stamp */
+            foreach ($envelope->all(NoAutoAckStamp::class) as $stamp) {
+                try {
+                    $handler = $stamp->getHandlerDescriptor()->getBatchHandler();
+                    $handler->flush($flushStamp->force());
+                } catch (\Throwable $e) {
+                    $exceptions[$stamp->getHandlerDescriptor()->getName()] = $e;
+                }
+            }
+        }
+
+        if (null === $handler && !$alreadyHandled) {
+            if (!$this->allowNoHandlers) {
+                throw new NoHandlerForMessageException(\sprintf('No handler for message "%s".', $context['class']));
+            }
+
+            $this->logger?->info('No handler for message {class}', $context);
+        }
+
+        if (\count($exceptions)) {
+            throw new HandlerFailedException($envelope, $exceptions);
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+
+    private function messageHasAlreadyBeenHandled(Envelope $envelope, HandlerDescriptor $handlerDescriptor): bool
+    {
+        /** @var HandledStamp $stamp */
+        foreach ($envelope->all(HandledStamp::class) as $stamp) {
+            if ($stamp->getHandlerName() === $handlerDescriptor->getName()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private function callHandler(callable $handler, object $message, ?Acknowledger $ack, ?HandlerArgumentsStamp $handlerArgumentsStamp): mixed
+    {
+        $arguments = [$message];
+        if (null !== $ack) {
+            $arguments[] = $ack;
+        }
+        if (null !== $handlerArgumentsStamp) {
+            $arguments = [...$arguments, ...$handlerArgumentsStamp->getAdditionalArguments()];
+        }
+
+        return $handler(...$arguments);
+    }
+}

vendor/symfony/messenger/Middleware/MiddlewareInterface.php

@@ -0,0 +1,22 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+
+/**
+ * @author Samuel Roze <samuel.roze@gmail.com>
+ */
+interface MiddlewareInterface
+{
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope;
+}

vendor/symfony/messenger/Middleware/RejectRedeliveredMessageMiddleware.php

@@ -0,0 +1,43 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Bridge\Amqp\Transport\AmqpReceivedStamp;
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Exception\RejectRedeliveredMessageException;
+
+/**
+ * Middleware that throws a RejectRedeliveredMessageException when a message is detected that has been redelivered by AMQP.
+ *
+ * The middleware runs before the HandleMessageMiddleware and prevents redelivered messages from being handled directly.
+ * The thrown exception is caught by the worker and will trigger the retry logic according to the retry strategy.
+ *
+ * AMQP redelivers messages when they do not get acknowledged or rejected. This can happen when the connection times out
+ * or an exception is thrown before acknowledging or rejecting. When such errors happen again while handling the
+ * redelivered message, the message would get redelivered again and again. The purpose of this middleware is to prevent
+ * infinite redelivery loops and to unblock the queue by republishing the redelivered messages as retries with a retry
+ * limit and potential delay.
+ *
+ * @author Tobias Schultze <http://tobion.de>
+ */
+class RejectRedeliveredMessageMiddleware implements MiddlewareInterface
+{
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        $amqpReceivedStamp = $envelope->last(AmqpReceivedStamp::class);
+        if ($amqpReceivedStamp instanceof AmqpReceivedStamp && $amqpReceivedStamp->getAmqpEnvelope()->isRedelivery()) {
+            throw new RejectRedeliveredMessageException('Redelivered message from AMQP detected that will be rejected and trigger the retry logic.');
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}

vendor/symfony/messenger/Middleware/RouterContextMiddleware.php

@@ -0,0 +1,87 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Stamp\ConsumedByWorkerStamp;
+use Symfony\Component\Messenger\Stamp\RouterContextStamp;
+use Symfony\Component\Routing\RequestContextAwareInterface;
+
+/**
+ * Restore the Router context when processing the message.
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+class RouterContextMiddleware implements MiddlewareInterface
+{
+    private RequestContextAwareInterface $router;
+
+    public function __construct(RequestContextAwareInterface $router)
+    {
+        $this->router = $router;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        if (!$envelope->last(ConsumedByWorkerStamp::class) || !$contextStamp = $envelope->last(RouterContextStamp::class)) {
+            $context = $this->router->getContext();
+            $envelope = $envelope->with(new RouterContextStamp(
+                $context->getBaseUrl(),
+                $context->getMethod(),
+                $context->getHost(),
+                $context->getScheme(),
+                $context->getHttpPort(),
+                $context->getHttpsPort(),
+                $context->getPathInfo(),
+                $context->getQueryString()
+            ));
+
+            return $stack->next()->handle($envelope, $stack);
+        }
+
+        $context = $this->router->getContext();
+        $currentBaseUrl = $context->getBaseUrl();
+        $currentMethod = $context->getMethod();
+        $currentHost = $context->getHost();
+        $currentScheme = $context->getScheme();
+        $currentHttpPort = $context->getHttpPort();
+        $currentHttpsPort = $context->getHttpsPort();
+        $currentPathInfo = $context->getPathInfo();
+        $currentQueryString = $context->getQueryString();
+
+        $context
+            ->setBaseUrl($contextStamp->getBaseUrl())
+            ->setMethod($contextStamp->getMethod())
+            ->setHost($contextStamp->getHost())
+            ->setScheme($contextStamp->getScheme())
+            ->setHttpPort($contextStamp->getHttpPort())
+            ->setHttpsPort($contextStamp->getHttpsPort())
+            ->setPathInfo($contextStamp->getPathInfo())
+            ->setQueryString($contextStamp->getQueryString())
+        ;
+
+        try {
+            return $stack->next()->handle($envelope, $stack);
+        } finally {
+            $context
+                ->setBaseUrl($currentBaseUrl)
+                ->setMethod($currentMethod)
+                ->setHost($currentHost)
+                ->setScheme($currentScheme)
+                ->setHttpPort($currentHttpPort)
+                ->setHttpsPort($currentHttpsPort)
+                ->setPathInfo($currentPathInfo)
+                ->setQueryString($currentQueryString)
+            ;
+        }
+    }
+}

vendor/symfony/messenger/Middleware/SendMessageMiddleware.php

@@ -0,0 +1,77 @@
+<?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\Middleware;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use Psr\Log\LoggerAwareTrait;
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Event\SendMessageToTransportsEvent;
+use Symfony\Component\Messenger\Exception\NoSenderForMessageException;
+use Symfony\Component\Messenger\Stamp\ReceivedStamp;
+use Symfony\Component\Messenger\Stamp\SentStamp;
+use Symfony\Component\Messenger\Transport\Sender\SendersLocatorInterface;
+
+/**
+ * @author Samuel Roze <samuel.roze@gmail.com>
+ * @author Tobias Schultze <http://tobion.de>
+ */
+class SendMessageMiddleware implements MiddlewareInterface
+{
+    use LoggerAwareTrait;
+
+    public function __construct(
+        private SendersLocatorInterface $sendersLocator,
+        private ?EventDispatcherInterface $eventDispatcher = null,
+        private bool $allowNoSenders = true,
+    ) {
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        $context = [
+            'class' => $envelope->getMessage()::class,
+        ];
+
+        $sender = null;
+
+        if ($envelope->all(ReceivedStamp::class)) {
+            // it's a received message, do not send it back
+            $this->logger?->info('Received message {class}', $context);
+        } else {
+            $shouldDispatchEvent = true;
+            $senders = $this->sendersLocator->getSenders($envelope);
+            $senders = \is_array($senders) ? $senders : iterator_to_array($senders);
+            foreach ($senders as $alias => $sender) {
+                if (null !== $this->eventDispatcher && $shouldDispatchEvent) {
+                    $event = new SendMessageToTransportsEvent($envelope, $senders);
+                    $this->eventDispatcher->dispatch($event);
+                    $envelope = $event->getEnvelope();
+                    $shouldDispatchEvent = false;
+                }
+
+                $this->logger?->info('Sending message {class} with {alias} sender using {sender}', $context + ['alias' => $alias, 'sender' => $sender::class]);
+                $envelope = $sender->send($envelope->with(new SentStamp($sender::class, \is_string($alias) ? $alias : null)));
+            }
+
+            if (!$this->allowNoSenders && !$sender) {
+                throw new NoSenderForMessageException(\sprintf('No sender for message "%s".', $context['class']));
+            }
+        }
+
+        if (null === $sender) {
+            return $stack->next()->handle($envelope, $stack);
+        }
+
+        // message should only be sent and not be handled by the next middleware
+        return $envelope;
+    }
+}

vendor/symfony/messenger/Middleware/StackInterface.php

@@ -0,0 +1,25 @@
+<?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\Middleware;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * Implementations must be cloneable, and each clone must unstack the stack independently.
+ */
+interface StackInterface
+{
+    /**
+     * Returns the next middleware to process a message.
+     */
+    public function next(): MiddlewareInterface;
+}

vendor/symfony/messenger/Middleware/StackMiddleware.php

@@ -0,0 +1,90 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class StackMiddleware implements MiddlewareInterface, StackInterface
+{
+    private MiddlewareStack $stack;
+    private int $offset = 0;
+
+    /**
+     * @param iterable<mixed, MiddlewareInterface>|MiddlewareInterface|null $middlewareIterator
+     */
+    public function __construct(iterable|MiddlewareInterface|null $middlewareIterator = null)
+    {
+        $this->stack = new MiddlewareStack();
+
+        if (null === $middlewareIterator) {
+            return;
+        }
+
+        if ($middlewareIterator instanceof \Iterator) {
+            $this->stack->iterator = $middlewareIterator;
+        } elseif ($middlewareIterator instanceof MiddlewareInterface) {
+            $this->stack->stack[] = $middlewareIterator;
+        } else {
+            $this->stack->iterator = (function () use ($middlewareIterator) {
+                yield from $middlewareIterator;
+            })();
+        }
+    }
+
+    public function next(): MiddlewareInterface
+    {
+        if (null === $next = $this->stack->next($this->offset)) {
+            return $this;
+        }
+
+        ++$this->offset;
+
+        return $next;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        return $envelope;
+    }
+}
+
+/**
+ * @internal
+ */
+class MiddlewareStack
+{
+    /** @var \Iterator<mixed, MiddlewareInterface>|null */
+    public ?\Iterator $iterator = null;
+    public array $stack = [];
+
+    public function next(int $offset): ?MiddlewareInterface
+    {
+        if (isset($this->stack[$offset])) {
+            return $this->stack[$offset];
+        }
+
+        if (null === $this->iterator) {
+            return null;
+        }
+
+        $this->iterator->next();
+
+        if (!$this->iterator->valid()) {
+            return $this->iterator = null;
+        }
+
+        return $this->stack[] = $this->iterator->current();
+    }
+}

vendor/symfony/messenger/Middleware/TraceableMiddleware.php

@@ -0,0 +1,96 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Stopwatch\Stopwatch;
+
+/**
+ * Collects some data about a middleware.
+ *
+ * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
+ */
+class TraceableMiddleware implements MiddlewareInterface
+{
+    private Stopwatch $stopwatch;
+    private string $busName;
+    private string $eventCategory;
+
+    public function __construct(Stopwatch $stopwatch, string $busName, string $eventCategory = 'messenger.middleware')
+    {
+        $this->stopwatch = $stopwatch;
+        $this->busName = $busName;
+        $this->eventCategory = $eventCategory;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        $stack = new TraceableStack($stack, $this->stopwatch, $this->busName, $this->eventCategory);
+
+        try {
+            return $stack->next()->handle($envelope, $stack);
+        } finally {
+            $stack->stop();
+        }
+    }
+}
+
+/**
+ * @internal
+ */
+class TraceableStack implements StackInterface
+{
+    private StackInterface $stack;
+    private Stopwatch $stopwatch;
+    private string $busName;
+    private string $eventCategory;
+    private ?string $currentEvent = null;
+
+    public function __construct(StackInterface $stack, Stopwatch $stopwatch, string $busName, string $eventCategory)
+    {
+        $this->stack = $stack;
+        $this->stopwatch = $stopwatch;
+        $this->busName = $busName;
+        $this->eventCategory = $eventCategory;
+    }
+
+    public function next(): MiddlewareInterface
+    {
+        if (null !== $this->currentEvent && $this->stopwatch->isStarted($this->currentEvent)) {
+            $this->stopwatch->stop($this->currentEvent);
+        }
+
+        if ($this->stack === $nextMiddleware = $this->stack->next()) {
+            $this->currentEvent = 'Tail';
+        } else {
+            $this->currentEvent = \sprintf('"%s"', get_debug_type($nextMiddleware));
+        }
+        $this->currentEvent .= \sprintf(' on "%s"', $this->busName);
+
+        $this->stopwatch->start($this->currentEvent, $this->eventCategory);
+
+        return $nextMiddleware;
+    }
+
+    public function stop(): void
+    {
+        if (null !== $this->currentEvent && $this->stopwatch->isStarted($this->currentEvent)) {
+            $this->stopwatch->stop($this->currentEvent);
+        }
+        $this->currentEvent = null;
+    }
+
+    public function __clone()
+    {
+        $this->stack = clone $this->stack;
+    }
+}

vendor/symfony/messenger/Middleware/ValidationMiddleware.php

@@ -0,0 +1,47 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Exception\ValidationFailedException;
+use Symfony\Component\Messenger\Stamp\ValidationStamp;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+/**
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ */
+class ValidationMiddleware implements MiddlewareInterface
+{
+    private ValidatorInterface $validator;
+
+    public function __construct(ValidatorInterface $validator)
+    {
+        $this->validator = $validator;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        $message = $envelope->getMessage();
+        $groups = null;
+        /** @var ValidationStamp|null $validationStamp */
+        if ($validationStamp = $envelope->last(ValidationStamp::class)) {
+            $groups = $validationStamp->getGroups();
+        }
+
+        $violations = $this->validator->validate($message, null, $groups);
+        if (\count($violations)) {
+            throw new ValidationFailedException($message, $violations, $envelope);
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}