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<?php |
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/* |
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* Copyright (c) 2013 Janos Szurovecz |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy of |
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* this software and associated documentation files (the "Software"), to deal in |
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* the Software without restriction, including without limitation the rights to |
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
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* of the Software, and to permit persons to whom the Software is furnished to do |
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* so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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namespace predaddy\messagehandling\interceptors; |
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use Exception; |
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use lf4php\MDC; |
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use precore\lang\Object; |
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use precore\util\UUID; |
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use predaddy\messagehandling\DispatchInterceptor; |
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use predaddy\messagehandling\InterceptorChain; |
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use predaddy\messagehandling\SubscriberExceptionContext; |
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use predaddy\messagehandling\SubscriberExceptionHandler; |
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use trf4php\TransactionManager; |
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/** |
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* Wraps the command dispatch process in transaction. It handles nested levels, which means it does not |
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* start a new transaction if there is an open one. |
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* |
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* <p> It puts a transaction ID to MDC with 'TR' key. |
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* |
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* @author Janos Szurovecz <[email protected]> |
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*/ |
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final class WrapInTransactionInterceptor extends Object implements DispatchInterceptor, SubscriberExceptionHandler |
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{ |
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const MDC_KEY = 'TR'; |
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/** |
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* @var TransactionManager |
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*/ |
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private $transactionManager; |
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private $transactionLevel = 0; |
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private $rollbackRequired = false; |
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/** |
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* @param TransactionManager $transactionManager |
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*/ |
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public function __construct(TransactionManager $transactionManager) |
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{ |
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$this->transactionManager = $transactionManager; |
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} |
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public function invoke($message, InterceptorChain $chain) |
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{ |
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try { |
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$this->transactionLevel++; |
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if ($this->transactionLevel == 1) { |
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$this->transactionManager->beginTransaction(); |
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MDC::put(self::MDC_KEY, UUID::randomUUID()->toString()); |
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self::getLogger()->debug('Transaction has been started'); |
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$chain->proceed(); |
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if ($this->rollbackRequired) { |
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$this->transactionManager->rollback(); |
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$this->rollbackRequired = false; |
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self::getLogger()->debug('Transaction has been rolled back'); |
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} else { |
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$this->transactionManager->commit(); |
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self::getLogger()->debug('Transaction has been committed'); |
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} |
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MDC::remove(self::MDC_KEY); |
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} else { |
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self::getLogger()->debug('Transaction has already started, using the existing one'); |
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$chain->proceed(); |
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} |
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$this->transactionLevel--; |
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} catch (Exception $e) { |
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MDC::remove(self::MDC_KEY); |
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$this->transactionLevel--; |
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throw $e; |
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} |
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} |
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public function handleException(Exception $exception, SubscriberExceptionContext $context) |
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{ |
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$this->rollbackRequired = true; |
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self::getLogger()->debug("Transaction rollback required, context '{}'!", [$context], $exception); |
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} |
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/** |
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* @return int |
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*/ |
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public function getTransactionLevel() |
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{ |
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return $this->transactionLevel; |
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} |
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} |
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szjani /
predaddy
