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@ -40,6 +40,7 @@
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namespace OC\Files\Cache;
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use Doctrine\DBAL\Exception\RetryableException;
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use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
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use OC\Files\Search\SearchComparison;
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use OC\Files\Search\SearchQuery;
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@ -692,7 +693,6 @@ class Cache implements ICache {
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throw new \Exception('Invalid target storage id: ' . $targetStorageId);
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}
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$this->connection->beginTransaction();
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if ($sourceData['mimetype'] === 'httpd/unix-directory') {
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//update all child entries
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$sourceLength = mb_strlen($sourcePath);
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@ -715,12 +715,31 @@ class Cache implements ICache {
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$query->set('encrypted', $query->createNamedParameter(0, IQueryBuilder::PARAM_INT));
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}
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try {
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$query->execute();
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} catch (\OC\DatabaseException $e) {
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$this->connection->rollBack();
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throw $e;
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// Retry transaction in case of RetryableException like deadlocks.
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// Retry up to 4 times because we should receive up to 4 concurrent requests from the frontend
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$retryLimit = 4;
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for ($i = 1; $i <= $retryLimit; $i++) {
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try {
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$this->connection->beginTransaction();
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$query->executeStatement();
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break;
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} catch (\OC\DatabaseException $e) {
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$this->connection->rollBack();
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throw $e;
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} catch (RetryableException $e) {
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// Simply throw if we already retried 4 times.
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if ($i === $retryLimit) {
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throw $e;
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}
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$this->connection->rollBack();
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// Sleep a bit to give some time to the other transaction to finish.
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usleep(100 * 1000 * $i);
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}
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}
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} else {
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$this->connection->beginTransaction();
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}
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$query = $this->getQueryBuilder();
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