59 lines
1.9 KiB
PHP
59 lines
1.9 KiB
PHP
<?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\taoLti\models\classes\ResourceLink;
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use oat\oatbox\service\ConfigurableService;
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/**
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* Service to generate unique ids for consumers resource links,
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* and storing this link in a keyvalue store
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*
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* @author joel bout (joel@taotesting.com)
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*/
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class KeyValueLink extends ConfigurableService implements LinkService
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{
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const OPTION_PERSISTENCE = 'persistence';
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const PREFIX = 'lti_link_';
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public function getLinkId($consumerId, $resourceLink): string
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{
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$id = $this->getPersistence()->get(self::PREFIX . $consumerId . $resourceLink);
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if ($id == false) {
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$id = \core_kernel_uri_UriService::singleton()->generateUri();
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$this->getPersistence()->set(self::PREFIX . $consumerId . $resourceLink, $id);
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}
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return $id;
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}
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/**
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* @return \common_persistence_KeyValuePersistence
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*/
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protected function getPersistence()
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{
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return $this->getServiceLocator()->get(\common_persistence_Manager::SERVICE_ID)
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->getPersistenceById($this->getOption(self::OPTION_PERSISTENCE));
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}
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}
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