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101 lines
2.8 KiB
PHP
101 lines
2.8 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014-2023 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
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* Website: https://www.espocrm.com
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*
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* EspoCRM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* EspoCRM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with EspoCRM. If not, see http://www.gnu.org/licenses/.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\ORM;
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use PDO;
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use PDOStatement;
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use PDOException;
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use Exception;
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use RuntimeException;
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/**
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* Executes SQL queries.
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*/
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class SqlExecutor
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{
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private $pdo;
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private const MAX_ATTEMPT_COUNT = 4;
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public function __construct(PDO $pdo)
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{
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$this->pdo = $pdo;
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}
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/**
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* Execute a query.
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*/
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public function execute(string $sql, bool $rerunIfDeadlock = false): PDOStatement
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{
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if (!$rerunIfDeadlock) {
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return $this->executeSqlWithDeadlockHandling($sql, 1);
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}
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return $this->executeSqlWithDeadlockHandling($sql);
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}
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private function executeSqlWithDeadlockHandling(string $sql, ?int $counter = null): PDOStatement
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{
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$counter = $counter ?? self::MAX_ATTEMPT_COUNT;
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try {
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$sth = $this->pdo->query($sql);
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}
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catch (Exception $e) {
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$counter--;
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if ($counter === 0 || !$this->isExceptionIsDeadlock($e)) {
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/**
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* @var PDOException $e
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*/
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throw $e;
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}
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return $this->executeSqlWithDeadlockHandling($sql, $counter);
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}
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if (!$sth) {
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throw new RuntimeException("Query execution failure.");
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}
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return $sth;
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}
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private function isExceptionIsDeadlock(Exception $e): bool
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{
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if (!$e instanceof PDOException) {
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return false;
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}
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return isset($e->errorInfo) && $e->errorInfo[0] == 40001 && $e->errorInfo[1] == 1213;
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}
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}
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