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<?php |
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/* |
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* This file is part of the Borobudur-Cqrs package. |
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* |
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* (c) Hexacodelabs <http://hexacodelabs.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Borobudur\Cqrs\Bus; |
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use Borobudur\Bus\Bus; |
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use Borobudur\Bus\Message\MessageInterface; |
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use Borobudur\Cqrs\Exception\InvalidArgumentException; |
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use Borobudur\Cqrs\Message\CommandInterface; |
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use Borobudur\Cqrs\ReadModel\Storage\TransactionalInterface; |
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use Borobudur\Queue\JobInterface; |
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use Borobudur\Queue\Queue; |
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use Borobudur\Queue\QueueMessage; |
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use Exception; |
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/** |
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* @author Iqbal Maulana <[email protected]> |
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* @created 8/18/15 |
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*/ |
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class CommandBus extends Bus |
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{ |
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const BUS_NAME = 'bus.command'; |
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/** |
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* @var TransactionalInterface |
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*/ |
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protected $transaction; |
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/** |
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* Constructor. |
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* |
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* @param TransactionalInterface|null $transaction |
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*/ |
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public function __construct(TransactionalInterface $transaction = null) |
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{ |
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$this->transaction = $transaction; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return CommandBus::BUS_NAME; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dispatch(MessageInterface $command) |
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{ |
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if (!$command instanceof CommandInterface) { |
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throw new InvalidArgumentException(sprintf( |
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'Command "%s" should implement \Borobudur\Cqrs\Message\CommandInterface', |
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get_class($command) |
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)); |
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} |
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if ($command instanceof JobInterface && $command->isQueued()) { |
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Queue::getInstance()->send(new QueueMessage($command)); |
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return null; |
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} |
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return $this->dispatchNow($command); |
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} |
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/** |
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* Dispatch command immediately. |
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* |
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* @param MessageInterface $command |
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* |
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* @return mixed |
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* @throws Exception |
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*/ |
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public function dispatchNow(MessageInterface $command) |
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{ |
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$this->beginTransaction(); |
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try { |
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$result = parent::dispatchNow($command); |
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$this->commit(); |
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return $result; |
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} catch (Exception $e) { |
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$this->rollback(); |
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throw $e; |
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} |
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} |
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/** |
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* Prepare transaction if possible. |
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*/ |
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protected function beginTransaction() |
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{ |
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if (null !== $this->transaction) { |
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$this->transaction->beginTransaction(); |
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} |
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} |
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/** |
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* Commit transaction if exist. |
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*/ |
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protected function commit() |
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{ |
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if (null !== $this->transaction) { |
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$this->transaction->commit(); |
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} |
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} |
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/** |
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* Rollback transaction if exist. |
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*/ |
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protected function rollback() |
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{ |
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if (null !== $this->transaction) { |
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$this->transaction->rollback(); |
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} |
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} |
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} |
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borobudur-php /
borobudur-cqrs
