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[Messenger] [Redis] Fixed problem where worker stops handling messages on first empty message #48837

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Merged
merged 1 commit into from
Apr 18, 2023
Merged

[Messenger] [Redis] Fixed problem where worker stops handling messages on first empty message #48837

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28 changes: 28 additions & 0 deletions src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/RedisExtIntegrationTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -14,10 +14,14 @@
use PHPUnit\Framework\TestCase;
use Symfony\Component\Messenger\Bridge\Redis\Tests\Fixtures\DummyMessage;
use Symfony\Component\Messenger\Bridge\Redis\Transport\Connection;
use Symfony\Component\Messenger\Bridge\Redis\Transport\RedisReceiver;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Exception\TransportException;
use Symfony\Component\Messenger\Transport\Serialization\Serializer;

/**
* @requires extension redis
*
* @group time-sensitive
* @group integration
*/
Expand Down Expand Up @@ -318,6 +322,30 @@ public function testGetAfterReject()
$redis->del('messenger-rejectthenget');
}

public function testItProperlyHandlesEmptyMessages()
{
$redisReceiver = new RedisReceiver($this->connection, new Serializer());

$this->connection->add('{"message": "Hi1"}', ['type' => DummyMessage::class]);
$this->connection->add('{"message": "Hi2"}', ['type' => DummyMessage::class]);

$redisReceiver->get();
$this->redis->xtrim('messages', 1);

// The consumer died during handling a message while performing xtrim in parallel process
$this->redis = new \Redis();
$this->connection = Connection::fromDsn(getenv('MESSENGER_REDIS_DSN'), ['delete_after_ack' => true], $this->redis);
$redisReceiver = new RedisReceiver($this->connection, new Serializer());

/** @var Envelope[] $envelope */
$envelope = $redisReceiver->get();
$this->assertCount(1, $envelope);

$message = $envelope[0]->getMessage();
$this->assertInstanceOf(DummyMessage::class, $message);
$this->assertEquals('Hi2', $message->getMessage());
}

private function getConnectionGroup(Connection $connection): string
{
$property = (new \ReflectionClass(Connection::class))->getProperty('group');
Expand Down
13 changes: 13 additions & 0 deletions src/Symfony/Component/Messenger/Bridge/Redis/Transport/RedisReceiver.php
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Exception\LogicException;
use Symfony\Component\Messenger\Exception\MessageDecodingFailedException;
use Symfony\Component\Messenger\Exception\TransportException;
use Symfony\Component\Messenger\Transport\Receiver\ReceiverInterface;
use Symfony\Component\Messenger\Transport\Serialization\PhpSerializer;
use Symfony\Component\Messenger\Transport\Serialization\SerializerInterface;
Expand Down Expand Up @@ -44,6 +45,18 @@ public function get(): iterable
return [];
}

if (null === $message['data']) {
try {
$this->connection->reject($message['id']);
} catch (TransportException $e) {
if ($e->getPrevious()) {
throw $e;
}
}

return $this->get();
}

$redisEnvelope = json_decode($message['data']['message'] ?? '', true);

if (null === $redisEnvelope) {
Expand Down