source: moodle/trunk/fuentes/lib/classes/task/file_temp_cleanup_task.php @ 1331

Last change on this file since 1331 was 1331, checked in by jrpelegrina, 3 years ago

Updated to moodle 3.0.3

File size: 3.4 KB
Line 
1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * A scheduled task.
19 *
20 * @package    core
21 * @copyright  2013 onwards Martin Dougiamas  http://dougiamas.com
22 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24namespace core\task;
25
26/**
27 * Simple task to delete temp files older than 1 week.
28 */
29class file_temp_cleanup_task extends scheduled_task {
30
31    /**
32     * Get a descriptive name for this task (shown to admins).
33     *
34     * @return string
35     */
36    public function get_name() {
37        return get_string('tasktempfilecleanup', 'admin');
38    }
39
40    /**
41     * Do the job.
42     * Throw exceptions on errors (the job will be retried).
43     */
44    public function execute() {
45        global $CFG;
46
47        $tmpdir = $CFG->tempdir;
48        // Default to last weeks time.
49        $time = time() - ($CFG->tempdatafoldercleanup * 3600);
50
51        $dir = new \RecursiveDirectoryIterator($tmpdir);
52        // Show all child nodes prior to their parent.
53        $iter = new \RecursiveIteratorIterator($dir, \RecursiveIteratorIterator::CHILD_FIRST);
54
55        // An array of the full path (key) and date last modified.
56        $modifieddateobject = array();
57
58        // Get the time modified for each directory node. Nodes will be updated
59        // once a file is deleted, so we need a list of the original values.
60        for ($iter->rewind(); $iter->valid(); $iter->next()) {
61            $node = $iter->getRealPath();
62            if (!is_readable($node)) {
63                continue;
64            }
65            $modifieddateobject[$node] = $iter->getMTime();
66        }
67
68        // Now loop through again and remove old files and directories.
69        for ($iter->rewind(); $iter->valid(); $iter->next()) {
70            $node = $iter->getRealPath();
71            if (!is_readable($node)) {
72                continue;
73            }
74
75            // Check if file or directory is older than the given time.
76            if ($modifieddateobject[$node] < $time) {
77                if ($iter->isDir() && !$iter->isDot()) {
78                    // Don't attempt to delete the directory if it isn't empty.
79                    if (!glob($node. DIRECTORY_SEPARATOR . '*')) {
80                        if (@rmdir($node) === false) {
81                            mtrace("Failed removing directory '$node'.");
82                        }
83                    }
84                }
85                if ($iter->isFile()) {
86                    if (@unlink($node) === false) {
87                        mtrace("Failed removing file '$node'.");
88                    }
89                }
90            } else {
91                // Return the time modified to the original date only for real files.
92                if ($iter->isDir() && !$iter->isDot()) {
93                    touch($node, $modifieddateobject[$node]);
94                }
95            }
96        }
97    }
98
99}
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