MDL-25505 Tasks: Fix for scheduled task bug on the last day of the month.
[moodle.git] / lib / classes / task / delete_logs_task.php
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309ae892
DW
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 old log records.
28 */
29class delete_logs_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('taskdeletelogs', '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, $DB;
46
47 $timenow = time();
48
49 // Delete old logs to save space.
50 // Value in days.
51 if (!empty($CFG->loglifetime)) {
52 $loglifetime = $timenow - ($CFG->loglifetime * 3600 * 24);
53 $DB->delete_records_select("log", "time < ?", array($loglifetime));
54 }
55
56 }
57
58}