Marijn/TijdVoorDeTest
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fix: address CodeRabbit review findings

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- Use FlashType enum in clearQuiz/finalizeQuiz/unfinalizeQuiz (was raw 'success'/'error' strings)
- Catch UniqueConstraintViolationException in addLabel to handle concurrent duplicate inserts
- Wrap assignToQuiz in a transaction with PESSIMISTIC_WRITE lock to serialise concurrent assignments of the same BankQuestion
This commit is contained in:
Marijn Doeve
2026-07-04 22:07:13 +02:00
parent 8304d8680b
commit 5d51885c82
3 changed files with 39 additions and 28 deletions
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src/Service/QuestionBankService.php
+27 -21
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@@ -4,6 +4,7 @@ declare(strict_types=1);
namespace Tvdt\Service;
use Doctrine\DBAL\LockMode;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\ObjectMapper\ObjectMapperInterface;
use Tvdt\Entity\Answer;
@@ -37,34 +38,39 @@ final readonly class QuestionBankService
throw new QuizLockedException();
}
if (!$bankQuestion->canBeAssigned() || $bankQuestion->isUsedInQuiz($quiz)) {
throw new BankQuestionAlreadyUsedException();
}
$this->entityManager->wrapInTransaction(function () use ($bankQuestion, $quiz): void {
// Pessimistic write lock serialises concurrent assignment attempts for the same BankQuestion
$this->entityManager->lock($bankQuestion, LockMode::PESSIMISTIC_WRITE);
$maxOrdering = 0;
foreach ($quiz->questions as $existingQuestion) {
$maxOrdering = max($maxOrdering, $existingQuestion->ordering);
}
if (!$bankQuestion->canBeAssigned() || $bankQuestion->isUsedInQuiz($quiz)) {
throw new BankQuestionAlreadyUsedException();
}
/** @var Question $question */
$question = $this->objectMapper->map($bankQuestion, Question::class);
$question->ordering = $maxOrdering + 1;
$maxOrdering = 0;
foreach ($quiz->questions as $existingQuestion) {
$maxOrdering = max($maxOrdering, $existingQuestion->ordering);
}
foreach ($bankQuestion->answers as $bankAnswer) {
/** @var Answer $answer */
$answer = $this->objectMapper->map($bankAnswer, Answer::class);
$question->addAnswer($answer);
}
/** @var Question $question */
$question = $this->objectMapper->map($bankQuestion, Question::class);
$question->ordering = $maxOrdering + 1;
$quiz->addQuestion($question);
foreach ($bankQuestion->answers as $bankAnswer) {
/** @var Answer $answer */
$answer = $this->objectMapper->map($bankAnswer, Answer::class);
$question->addAnswer($answer);
}
$usage = new BankQuestionUsage($bankQuestion, $quiz);
$usage->question = $question;
$quiz->addQuestion($question);
$bankQuestion->addUsage($usage);
$usage = new BankQuestionUsage($bankQuestion, $quiz);
$usage->question = $question;
$this->entityManager->persist($question);
$this->entityManager->flush();
$bankQuestion->addUsage($usage);
$this->entityManager->persist($question);
$this->entityManager->flush();
});
}
/**