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[Mesenger] Add support for reseting container services between 2 mess…
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…ages

Without this patch, services are not resetted. For example Monolog
Finger Cross handler is never reset nor flushed. So if the first
message trigger and "error" level message, all others message will log
and overflow the buffer.

Usage with framework:

```yaml
framework:
    messenger:
        transports:
            async:
                dsn: '%env(MESSENGER_TRANSPORT_DSN)%'
                reset_on_message: true
            failed: 'doctrine://default?queue_name=failed'
            sync: 'sync://'
```
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lyrixx committed May 10, 2021
1 parent c151f76 commit ae3dc21
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Showing 13 changed files with 129 additions and 3 deletions.
4 changes: 4 additions & 0 deletions src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
@@ -1,6 +1,10 @@
CHANGELOG
=========

5.4
---
* Add support for resting container services after each messenger messages.

5.3
---

Expand Down
Expand Up @@ -1325,6 +1325,7 @@ function ($a) {
->fixXmlConfig('option')
->children()
->scalarNode('dsn')->end()
->booleanNode('reset_on_message')->defaultFalse()->info('Reset the container services after each message.')->end()
->scalarNode('serializer')->defaultNull()->info('Service id of a custom serializer to use.')->end()
->arrayNode('options')
->normalizeKeys(false)
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Expand Up @@ -1983,6 +1983,7 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder

$senderAliases = [];
$transportRetryReferences = [];
$transportNamesForResetServices = [];
foreach ($config['transports'] as $name => $transport) {
$serializerId = $transport['serializer'] ?? 'messenger.default_serializer';
$transportDefinition = (new Definition(TransportInterface::class))
Expand Down Expand Up @@ -2011,6 +2012,18 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder

$transportRetryReferences[$name] = new Reference($retryServiceId);
}
if ($transport['reset_on_message']) {
$transportNamesForResetServices[] = $name;
}
}

if ($transportNamesForResetServices) {
$container
->getDefinition('messenger.listener.reset_services')
->replaceArgument(1, $transportNamesForResetServices)
;
} else {
$container->removeDefinition('messenger.listener.reset_services');
}

$senderReferences = [];
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Expand Up @@ -18,6 +18,7 @@
use Symfony\Component\Messenger\Bridge\Redis\Transport\RedisTransportFactory;
use Symfony\Component\Messenger\EventListener\AddErrorDetailsStampListener;
use Symfony\Component\Messenger\EventListener\DispatchPcntlSignalListener;
use Symfony\Component\Messenger\EventListener\ResetServicesListener;
use Symfony\Component\Messenger\EventListener\SendFailedMessageForRetryListener;
use Symfony\Component\Messenger\EventListener\SendFailedMessageToFailureTransportListener;
use Symfony\Component\Messenger\EventListener\StopWorkerOnRestartSignalListener;
Expand Down Expand Up @@ -193,6 +194,13 @@
->set('messenger.listener.stop_worker_on_sigterm_signal_listener', StopWorkerOnSigtermSignalListener::class)
->tag('kernel.event_subscriber')

->set('messenger.listener.reset_services', ResetServicesListener::class)
->args([
service('services_resetter'),
abstract_arg('receivers names'),
])
->tag('kernel.event_subscriber')

->set('messenger.routable_message_bus', RoutableMessageBus::class)
->args([
abstract_arg('message bus locator'),
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Expand Up @@ -503,6 +503,7 @@
<xsd:attribute name="serializer" type="xsd:string" />
<xsd:attribute name="dsn" type="xsd:string" />
<xsd:attribute name="failure-transport" type="xsd:string" />
<xsd:attribute name="reset-on-message" type="xsd:boolean" />
</xsd:complexType>

<xsd:complexType name="messenger_retry_strategy">
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Expand Up @@ -11,6 +11,7 @@
'default' => 'amqp://localhost/%2f/messages',
'customised' => [
'dsn' => 'amqp://localhost/%2f/messages?exchange_name=exchange_name',
'reset_on_message' => true,
'options' => ['queue' => ['name' => 'Queue']],
'serializer' => 'messenger.transport.native_php_serializer',
'retry_strategy' => [
Expand Down
Expand Up @@ -10,7 +10,7 @@
<framework:messenger failure-transport="failed">
<framework:serializer default-serializer="messenger.transport.symfony_serializer" />
<framework:transport name="default" dsn="amqp://localhost/%2f/messages" />
<framework:transport name="customised" dsn="amqp://localhost/%2f/messages?exchange_name=exchange_name" serializer="messenger.transport.native_php_serializer">
<framework:transport name="customised" dsn="amqp://localhost/%2f/messages?exchange_name=exchange_name" serializer="messenger.transport.native_php_serializer" reset-on-message="true">
<framework:options>
<framework:queue>
<framework:name>Queue</framework:name>
Expand Down
Expand Up @@ -8,6 +8,7 @@ framework:
default: 'amqp://localhost/%2f/messages'
customised:
dsn: 'amqp://localhost/%2f/messages?exchange_name=exchange_name'
reset_on_message: true
options:
queue:
name: Queue
Expand Down
Expand Up @@ -714,6 +714,7 @@ public function testMessenger()
$this->assertTrue($container->hasDefinition('messenger.transport.redis.factory'));
$this->assertTrue($container->hasDefinition('messenger.transport_factory'));
$this->assertSame(TransportFactory::class, $container->getDefinition('messenger.transport_factory')->getClass());
$this->assertFalse($container->hasDefinition('messenger.listener.reset_services'));
}

public function testMessengerMultipleFailureTransports()
Expand Down Expand Up @@ -858,6 +859,9 @@ public function testMessengerTransports()
return array_shift($values);
}, $failureTransports);
$this->assertEquals($expectedTransportsByFailureTransports, $failureTransportsReferences);

$this->assertTrue($container->hasDefinition('messenger.listener.reset_services'));
$this->assertSame(['customised'], $container->getDefinition('messenger.listener.reset_services')->getArgument(1));
}

public function testMessengerRouting()
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4 changes: 2 additions & 2 deletions src/Symfony/Bundle/FrameworkBundle/composer.json
Expand Up @@ -48,7 +48,7 @@
"symfony/http-client": "^4.4|^5.0",
"symfony/lock": "^4.4|^5.0",
"symfony/mailer": "^5.2",
"symfony/messenger": "^5.2",
"symfony/messenger": "^5.4",
"symfony/mime": "^4.4|^5.0",
"symfony/notifier": "^5.3",
"symfony/allmysms-notifier": "^5.3",
Expand Down Expand Up @@ -115,7 +115,7 @@
"symfony/form": "<5.2",
"symfony/lock": "<4.4",
"symfony/mailer": "<5.2",
"symfony/messenger": "<4.4",
"symfony/messenger": "<5.4",
"symfony/mime": "<4.4",
"symfony/property-info": "<4.4",
"symfony/property-access": "<5.3",
Expand Down
4 changes: 4 additions & 0 deletions src/Symfony/Component/Messenger/CHANGELOG.md
@@ -1,6 +1,10 @@
CHANGELOG
=========

5.4
---
* Add support for resting container services after each messages.

5.3
---

Expand Down
@@ -0,0 +1,50 @@
<?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\EventListener;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\DependencyInjection\ServicesResetter;
use Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent;
use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;

/**
* @author Grégoire Pineau <lyrixx@lyrixx.info>
*/
class ResetServicesListener implements EventSubscriberInterface
{
private $servicesResetter;
private $receiversName;

public function __construct(ServicesResetter $servicesResetter, array $receiversName)
{
$this->servicesResetter = $servicesResetter;
$this->receiversName = $receiversName;
}

public function resetServices(AbstractWorkerMessageEvent $event)
{
if (!\in_array($event->getReceiverName(), $this->receiversName, true)) {
return;
}

$this->servicesResetter->reset();
}

public static function getSubscribedEvents()
{
return [
WorkerMessageHandledEvent::class => ['resetServices'],
WorkerMessageFailedEvent::class => ['resetServices'],
];
}
}
@@ -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\Tests\EventListener;

use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpKernel\DependencyInjection\ServicesResetter;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent;
use Symfony\Component\Messenger\EventListener\ResetServicesListener;

class ResetServicesListenerTest extends TestCase
{
public function provideTests(): iterable
{
yield ['foo', true];
yield ['bar', false];
}

/** @dataProvider provideTests */
public function test(string $receiverName, bool $shouldReset)
{
$servicesResetter = $this->createMock(ServicesResetter::class);
$servicesResetter->expects($shouldReset ? $this->once() : $this->never())->method('reset');

$event = new class(new Envelope(new \stdClass()), $receiverName) extends AbstractWorkerMessageEvent {};

$memoryLimitListener = new ResetServicesListener($servicesResetter, ['foo']);
$memoryLimitListener->resetServices($event);
}
}

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