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<?php |
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/** |
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* This software package is licensed under AGPL or Commercial license. |
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* |
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* @package maslosoft/mangan |
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* @licence AGPL or Commercial |
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* @copyright Copyright (c) Piotr Masełkowski <[email protected]> |
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* @copyright Copyright (c) Maslosoft |
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* @copyright Copyright (c) Others as mentioned in code |
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* @link https://maslosoft.com/mangan/ |
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*/ |
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namespace Maslosoft\Mangan; |
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use Exception; |
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use Maslosoft\Addendum\Interfaces\AnnotatedInterface; |
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use Maslosoft\Mangan\Exceptions\TransactionException; |
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use Maslosoft\Mangan\Helpers\CommandProxy; |
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/** |
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* Transaction |
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* |
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* @author Piotr Maselkowski <pmaselkowski at gmail.com> |
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*/ |
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class Transaction |
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{ |
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public const IsolationMVCC = 'mvcc'; |
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public const IsolationSerializable = 'serializable'; |
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public const IsolationReadUncommitted = 'readUncommitted'; |
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public const CommandBegin = 'beginTransaction'; |
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public const CommandCommit = 'commitTransaction'; |
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public const CommandRollback = 'rollbackTransaction'; |
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/** |
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* |
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* @var CommandProxy |
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*/ |
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private $cmd; |
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/** |
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* Whenever transaction is currently active |
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* @var bool |
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*/ |
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private static $isActive = false; |
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/** |
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* Whenever transactions are available in current database |
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* @var bool |
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*/ |
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private static $isAvailable; |
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/** |
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* Begin new transaction |
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* @param AnnotatedInterface $model |
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* @param string $isolation |
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*/ |
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public function __construct(AnnotatedInterface $model, $isolation = self::IsolationMVCC) |
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{ |
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$this->cmd = new CommandProxy($model); |
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if (null === self::$isAvailable) |
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{ |
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self::$isAvailable = $this->isAvailable(); |
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} |
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if (!self::$isAvailable) |
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{ |
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return; |
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} |
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if (self::$isActive) |
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{ |
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throw new TransactionException('Transaction is already running'); |
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} |
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$this->cmd->call(self::CommandBegin, [ |
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'isolation' => $isolation |
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]); |
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self::$isActive = true; |
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} |
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public function isAvailable(): bool |
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{ |
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return $this->cmd->isAvailable(self::CommandBegin) && $this->cmd->isAvailable(self::CommandCommit); |
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} |
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public function commit(): void |
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{ |
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$this->_finish(self::CommandCommit); |
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} |
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public function rollback(): void |
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{ |
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$this->_finish(self::CommandRollback); |
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} |
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private function _finish($command): void |
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{ |
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try |
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{ |
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$this->cmd->call($command); |
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} catch (Exception $e) |
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{ |
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throw $e; |
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} finally |
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{ |
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self::$isActive = false; |
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} |
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} |
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} |
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Maslosoft /
Mangan
