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<?php |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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namespace TYPO3\CMS\Extbase\Mvc; |
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use Psr\Container\ContainerInterface; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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use TYPO3\CMS\Extbase\Configuration\RequestHandlersConfigurationFactory; |
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/** |
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* Analyzes the raw request and delivers a request handler which can handle it. |
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* @internal only to be used within Extbase, not part of TYPO3 Core API. |
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*/ |
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class RequestHandlerResolver |
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{ |
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/** |
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* @var ContainerInterface |
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*/ |
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private $container; |
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/** |
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* @var \TYPO3\CMS\Extbase\Configuration\RequestHandlersConfiguration |
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*/ |
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private $requestHandlersConfiguration; |
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/** |
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* @param ContainerInterface $container |
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* @param RequestHandlersConfigurationFactory $requestHandlersConfigurationFactory |
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* @throws \TYPO3\CMS\Extbase\Configuration\Exception |
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*/ |
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public function __construct(ContainerInterface $container, RequestHandlersConfigurationFactory $requestHandlersConfigurationFactory) |
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{ |
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$this->container = $container; |
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$this->requestHandlersConfiguration = $requestHandlersConfigurationFactory->createRequestHandlersConfiguration(); |
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} |
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/** |
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* Analyzes the raw request and tries to find a request handler which can handle |
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* it. If none is found, an exception is thrown. |
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* |
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* @return \TYPO3\CMS\Extbase\Mvc\RequestHandlerInterface A request handler |
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* @throws \TYPO3\CMS\Extbase\Mvc\Exception |
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*/ |
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public function resolveRequestHandler() |
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{ |
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$suitableRequestHandlers = []; |
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foreach ($this->requestHandlersConfiguration->getRegisteredRequestHandlers() as $requestHandlerClassName) { |
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/** @var RequestHandlerInterface $requestHandler */ |
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$requestHandler = $this->container->has($requestHandlerClassName) |
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? $this->container->get($requestHandlerClassName) |
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: GeneralUtility::makeInstance($requestHandlerClassName) |
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; |
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if ($requestHandler->canHandleRequest()) { |
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$priority = $requestHandler->getPriority(); |
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if (isset($suitableRequestHandlers[$priority])) { |
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throw new Exception('More than one request handler with the same priority can handle the request, but only one handler may be active at a time!', 1176475350); |
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} |
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$suitableRequestHandlers[$priority] = $requestHandler; |
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} |
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} |
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if (empty($suitableRequestHandlers)) { |
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throw new Exception('No suitable request handler found.', 1205414233); |
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} |
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ksort($suitableRequestHandlers); |
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return array_pop($suitableRequestHandlers); |
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} |
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} |
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TYPO3 /
TYPO3.CMS
