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<?php |
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/* |
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* This file is part of the puli/manager package. |
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* |
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* (c) Bernhard Schussek <[email protected]> |
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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 Puli\Manager\Transaction; |
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use Exception; |
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use Puli\Manager\Assert\Assert; |
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/** |
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* Adds support for interceptors to an atomic operation. |
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* |
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* The operation and its interceptors are passed to the constructor. All |
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* interceptors must implement {@link OperationInterceptor}. |
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* |
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* The {@link OperationInterceptor} interface supports two methods: |
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* |
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* * {@link OperationInterceptor::postExecute()} is invoked after executing |
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* the operation. If the execution fails, the interceptor is not invoked. |
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* If the interceptor fails, the operation is rolled back. |
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* * {@link OperationInterceptor::postRollback()} is invoked after rolling |
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* back the operation. Consequently, this method is also called when |
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* {@link OperationInterceptor::postExecute()} fails. |
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* |
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* @since 1.0 |
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* |
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* @author Bernhard Schussek <[email protected]> |
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*/ |
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class InterceptedOperation implements AtomicOperation |
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{ |
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/** |
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* @var AtomicOperation |
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*/ |
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private $operation; |
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/** |
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* @var OperationInterceptor[] |
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*/ |
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private $interceptors; |
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/** |
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* @var OperationInterceptor[] |
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*/ |
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private $interceptorsForRollback; |
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/** |
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* Adds support for interceptors to an atomic operation. |
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* |
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* @param AtomicOperation $operation The operation. |
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* @param OperationInterceptor|OperationInterceptor[] $interceptors The interceptor(s). |
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*/ |
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public function __construct(AtomicOperation $operation, $interceptors) |
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{ |
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$interceptors = is_array($interceptors) ? $interceptors : array($interceptors); |
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Assert::allIsInstanceOf($interceptors, __NAMESPACE__.'\OperationInterceptor'); |
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$this->operation = $operation; |
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$this->interceptors = $interceptors; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function execute() |
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{ |
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// no rollback if execute() fails |
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$this->operation->execute(); |
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try { |
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// rollback if postExecute() fails, since execute() is already |
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// completed |
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foreach ($this->interceptors as $interceptor) { |
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$this->interceptorsForRollback[] = $interceptor; |
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$interceptor->postExecute(); |
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} |
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} catch (Exception $e) { |
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$this->rollback(); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function rollback() |
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{ |
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$this->operation->rollback(); |
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// Only launch interceptors whose postExecute() method was called |
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foreach ($this->interceptorsForRollback as $interceptor) { |
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$interceptor->postRollback(); |
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} |
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} |
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} |
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puli /
manager
