TransactionManager.php

<?php

declare (strict_types=1);
namespace Drupal\pgsql\Driver\Database\pgsql;

use Drupal\Core\Database\Transaction\TransactionManagerBase;
use Drupal\Core\Database\TransactionCommitFailedException;
use Drupal\Core\Database\TransactionException;

/**
 * PostgreSql implementation of TransactionManagerInterface.
 */
class TransactionManager extends TransactionManagerBase {
  
  /**
   * {@inheritdoc}
   */
  protected function beginClientTransaction() : bool {
    try {
      return $this->connection
        ->getClientConnection()
        ->beginTransaction();
    } catch (\Exception $e) {
      throw new TransactionException('Failed start of transaction', $e->getCode(), $e);
    }
  }
  
  /**
   * {@inheritdoc}
   */
  protected function rollbackClientTransaction() : bool {
    try {
      return $this->connection
        ->getClientConnection()
        ->rollBack();
    } catch (\Exception $e) {
      throw new TransactionException('Failed rollback of transaction', $e->getCode(), $e);
    }
  }
  
  /**
   * {@inheritdoc}
   */
  protected function commitClientTransaction() : bool {
    try {
      return $this->connection
        ->getClientConnection()
        ->commit();
    } catch (\Exception $e) {
      throw new TransactionCommitFailedException('Failed commit of transaction', $e->getCode(), $e);
    }
  }

}