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by Joachim
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created

DispatchMessageHandler::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 10
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 1

Importance

Changes 1
Bugs 0 Features 0
Metric Value
eloc 4
c 1
b 0
f 0
dl 0
loc 10
ccs 5
cts 5
cp 1
rs 10
cc 1
nc 1
nop 4
crap 1
1
<?php
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declare(strict_types=1);
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namespace Setono\MessageSchedulerBundle\Message\Handler;
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use const DATE_ATOM;
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use Doctrine\Persistence\ManagerRegistry;
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use Doctrine\Persistence\ObjectManager;
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use RuntimeException;
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use Safe\DateTime;
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use function Safe\sprintf;
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use Setono\MessageSchedulerBundle\Entity\ScheduledMessage;
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use Setono\MessageSchedulerBundle\Message\Command\DispatchScheduledMessage;
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use Setono\MessageSchedulerBundle\Repository\ScheduledMessageRepositoryInterface;
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use Setono\MessageSchedulerBundle\Workflow\ScheduledMessageWorkflow;
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use Symfony\Component\Messenger\Envelope;
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use Symfony\Component\Messenger\Exception\UnrecoverableMessageHandlingException;
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use Symfony\Component\Messenger\Handler\MessageHandlerInterface;
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use Symfony\Component\Messenger\RoutableMessageBus;
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use Symfony\Component\Messenger\Stamp\BusNameStamp;
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use Symfony\Component\Workflow\Registry;
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use Throwable;
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final class DispatchMessageHandler implements MessageHandlerInterface
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{
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    private ?ObjectManager $objectManager = null;
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    private RoutableMessageBus $routableMessageBus;
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    private ScheduledMessageRepositoryInterface $scheduledMessageRepository;
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    private Registry $workflowRegistry;
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    private ManagerRegistry $managerRegistry;
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    public function __construct(
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        RoutableMessageBus $routableMessageBus,
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        ScheduledMessageRepositoryInterface $scheduledMessageRepository,
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        Registry $workflowRegistry,
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        ManagerRegistry $managerRegistry
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    ) {
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        $this->routableMessageBus = $routableMessageBus;
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        $this->scheduledMessageRepository = $scheduledMessageRepository;
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        $this->workflowRegistry = $workflowRegistry;
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        $this->managerRegistry = $managerRegistry;
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    }
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    public function __invoke(DispatchScheduledMessage $message): void
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    {
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        /** @var ScheduledMessage|null $scheduledMessage */
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        $scheduledMessage = $this->scheduledMessageRepository->find($message->getScheduledMessageId());
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        if (null === $scheduledMessage) {
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            throw new UnrecoverableMessageHandlingException(sprintf(
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                'The scheduled message with id, "%s" does not exist', $message->getScheduledMessageId()
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            ));
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        }
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        $scheduledMessage->resetErrors();
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        $now = new DateTime();
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        if ($scheduledMessage->getDispatchAt() > $now) {
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            throw new UnrecoverableMessageHandlingException(sprintf(
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                'The scheduled message with id, "%s" is not eligible to be dispatched yet. The dispatch timestamp is %s, while the time now is %s',
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                $message->getScheduledMessageId(), $scheduledMessage->getDispatchAt()->format(DATE_ATOM), $now->format(DATE_ATOM)
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            ));
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        }
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        $workflow = $this->workflowRegistry->get($scheduledMessage, ScheduledMessageWorkflow::NAME);
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        if (!$workflow->can($scheduledMessage, ScheduledMessageWorkflow::TRANSITION_PROCESS)) {
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            throw new UnrecoverableMessageHandlingException(sprintf(
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                'The scheduled message with id, "%s" could not enter the transition "%s". The state was: "%s"',
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                $message->getScheduledMessageId(), ScheduledMessageWorkflow::TRANSITION_PROCESS, $scheduledMessage->getState()
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            ));
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        }
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        $workflow->apply($scheduledMessage, ScheduledMessageWorkflow::TRANSITION_PROCESS);
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        $objectManager = $this->getObjectManager($scheduledMessage);
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        $objectManager->flush();
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        /** @var object $messageToBeDispatched */
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        $messageToBeDispatched = unserialize($scheduledMessage->getSerializedMessage(), [
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            'allowed_classes' => [ScheduledMessage::class],
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        ]);
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        $stamps = [];
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        $bus = $scheduledMessage->getBus();
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        if (null !== $bus) {
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            $stamps[] = new BusNameStamp($bus);
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        }
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        try {
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            // notice that this try-catch block won't handle (and therefore log) any errors happening,
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            // if the $messageToBeDispatched is routed on an async transport
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            $this->routableMessageBus->dispatch(new Envelope($messageToBeDispatched, $stamps));
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            $workflow->apply($scheduledMessage, ScheduledMessageWorkflow::TRANSITION_SUCCEED);
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            $objectManager->flush();
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        } catch (Throwable $e) {
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            $originalException = $e;
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            $workflow->apply($scheduledMessage, ScheduledMessageWorkflow::TRANSITION_FAIL);
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            do {
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                $scheduledMessage->addError($e->getMessage());
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                $e = $e->getPrevious();
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            } while (null !== $e);
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            $objectManager->flush();
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            throw $originalException;
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        }
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    }
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    private function getObjectManager(object $object): ObjectManager
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    {
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        if (null === $this->objectManager) {
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            $class = get_class($object);
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            $manager = $this->managerRegistry->getManagerForClass($class);
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            if (null === $manager) {
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                throw new RuntimeException(sprintf('No object manager associated with the class, %s', $class));
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            }
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            $this->objectManager = $manager;
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        }
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        return $this->objectManager;
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    }
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}
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