99 lines
3.0 KiB
PHP
99 lines
3.0 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2017 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*
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*/
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namespace oat\tao\model\mvc\error;
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use oat\oatbox\service\ConfigurableService;
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/**
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* Registry for exception interpreter
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*
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* @access public
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* @author Aleh Hutnikau, <hutnikau@1pt.com>
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* @package tao
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*/
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class ExceptionInterpreterService extends ConfigurableService
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{
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const SERVICE_ID = 'tao/ExceptionInterpreterService';
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const OPTION_INTERPRETERS = 'interpreters';
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/**
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* @param \Exception $e
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* @return ExceptionInterpretor
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*/
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public function getExceptionInterpreter(\Exception $e)
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{
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$interpreters = $this->hasOption(self::OPTION_INTERPRETERS) ?
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$this->getOption(self::OPTION_INTERPRETERS) : [];
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$exceptionClassesHierarchy = $this->getClassesHierarchy($e);
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$foundInterpreters = [];
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foreach ($interpreters as $configuredExceptionClass => $configuredInterpreterClass) {
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$configuredExceptionClass = trim($configuredExceptionClass, '\\');
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if (isset($exceptionClassesHierarchy[$configuredExceptionClass])) {
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$foundInterpreters[$exceptionClassesHierarchy[$configuredExceptionClass]] = $configuredInterpreterClass;
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}
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}
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$interpreterClass = $foundInterpreters[min(array_keys($foundInterpreters))];
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$result = new $interpreterClass();
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$result->setException($e);
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$result->setServiceLocator($this->getServiceManager());
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return $result;
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}
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/**
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* Function calculates exception classes hierarchy
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*
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* Example:
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*
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* Given hierarchy:
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* class B extends A {}
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* class A extends Exception {}
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* //B => A => Exception
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*
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* $this->getClassesHierarchy(new B)
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*
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* Result:
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* [
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* 'B' => 0,
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* 'A' => 1,
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* 'Exception' => 2,
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* ]
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*
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*
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* @param \Exception $e
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* @return array where key is class name and value is index in the hierarchy
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*/
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protected function getClassesHierarchy(\Exception $e)
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{
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$exceptionClass = get_class($e);
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$exceptionClassesHierarchy = array_values(class_parents($exceptionClass));
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array_unshift($exceptionClassesHierarchy, $exceptionClass);
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$exceptionClassesHierarchy = array_flip($exceptionClassesHierarchy);
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return $exceptionClassesHierarchy;
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}
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}
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