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73 lines
2.9 KiB
73 lines
2.9 KiB
2 years ago
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace repository_filesystem\task;
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defined('MOODLE_INTERNAL') || die();
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/**
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* A schedule task for file system repository cron.
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*
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* @package repository_filesystem
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* @copyright 2019 Simey Lameze <simey@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class cron_task extends \core\task\scheduled_task {
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/**
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* Get a descriptive name for this task (shown to admins).
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*
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* @return string
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*/
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public function get_name() {
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return get_string('crontask', 'repository_filesystem');
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}
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/**
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* Run file system repository cron.
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*/
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public function execute() {
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global $CFG;
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require_once($CFG->dirroot . '/repository/lib.php');
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$fs = get_file_storage();
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// Find all generated thumbnails and group them in array by itemid (itemid == repository instance id).
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$allfiles = array_merge(
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$fs->get_area_files(SYSCONTEXTID, 'repository_filesystem', 'thumb'),
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$fs->get_area_files(SYSCONTEXTID, 'repository_filesystem', 'icon')
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);
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$filesbyitem = array();
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foreach ($allfiles as $file) {
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if (!isset($filesbyitem[$file->get_itemid()])) {
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$filesbyitem[$file->get_itemid()] = array();
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}
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$filesbyitem[$file->get_itemid()][] = $file;
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}
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// Find all instances of repository_filesystem.
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$instances = \repository::get_instances(array('type' => 'filesystem'));
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// Loop through all itemids of generated thumbnails.
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foreach ($filesbyitem as $itemid => $files) {
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if (!isset($instances[$itemid]) || !($instances[$itemid] instanceof repository_filesystem)) {
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// Instance was deleted.
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$fs->delete_area_files(SYSCONTEXTID, 'repository_filesystem', 'thumb', $itemid);
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$fs->delete_area_files(SYSCONTEXTID, 'repository_filesystem', 'icon', $itemid);
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mtrace(" instance $itemid does not exist: deleted all thumbnails");
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} else {
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// Instance has some generated thumbnails, check that they are not outdated.
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$instances[$itemid]->remove_obsolete_thumbnails($files);
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}
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}
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}
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}
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