89 lines
2.7 KiB
PHP
89 lines
2.7 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;
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*
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* @author Alexander Zagovorichev <zagovorichev@1pt.com>
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*/
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namespace oat\taoProctoring\model;
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use oat\oatbox\service\ConfigurableService;
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use oat\oatbox\user\User;
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abstract class ServiceDelegator extends ConfigurableService implements ServiceDelegatorInterface
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{
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/**
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* @var ConfigurableService
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*/
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private $service;
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/**
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* Returns applicable service
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*
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* @throws \common_exception_NoImplementation
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* @param $user
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* @param $deliveryId
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* @return DelegatedServiceHandler
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*/
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public function getResponsibleService(User $user, $deliveryId = null)
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{
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if (!isset($this->service))
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{
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/** @var DelegatedServiceHandler $handler */
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foreach ($this->getOption(self::SERVICE_HANDLERS) as $handler) {
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if (!is_a($handler, DelegatedServiceHandler::class)) {
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throw new \common_exception_NoImplementation('Handler should be instance of DelegatorServiceHandler.');
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}
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$handler->setServiceLocator($this->getServiceLocator());
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if ($handler->isSuitable($user, $deliveryId)) {
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$this->service = $handler;
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break;
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}
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}
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}
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return $this->service;
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}
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/**
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* @param $handler
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*/
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public function registerHandler(DelegatedServiceHandler $handler)
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{
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$handlers = $this->getOption(self::SERVICE_HANDLERS);
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$exists = false;
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// change options on the existing handlers
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foreach ($handlers as $key => $_handler) {
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if ($_handler instanceof $handler) {
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$handlers[$key] = $handler;
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$exists = true;
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break;
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}
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}
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// new handler should be added to the top of the list
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if (!$exists) {
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$handlers = array_merge([$handler], $handlers);
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}
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$this->setOption(self::SERVICE_HANDLERS, $handlers);
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}
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}
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