Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * CLI cron

 *

 * This script looks through all the module directories for cron.php files

 * and runs them.  These files can contain cleanup functions, email functions

 * or anything that needs to be run on a regular basis.

 *

 * @package    core

 * @subpackage cli

 * @copyright  2009 Petr Skoda (http://skodak.org)

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

define('CLI_SCRIPT', true);

require(__DIR__ . '/../../config.php');

require_once($CFG->libdir . '/clilib.php');

// Now get cli option.

[$options, $unrecognized] = cli_get_params(

    [

        'help' => false,

        'stop' => false,

        'list' => false,

        'force' => false,

        'enable' => false,

        'disable' => false,

        'disable-wait' => false,

        'keep-alive' => null,

    ],

    [

        'h' => 'help',

        's' => 'stop',

        'l' => 'list',

        'f' => 'force',

        'e' => 'enable',

        'd' => 'disable',

        'w' => 'disable-wait',

        'k' => 'keep-alive',

    ]

);

if ($unrecognized) {

    $unrecognized = implode("\n  ", $unrecognized);

    cli_error(get_string('cliunknowoption', 'admin', $unrecognized));

}

if ($options['help']) {

    $help =

    "Execute periodic cron actions.

Options:

-h, --help               Print out this help

-s, --stop               Notify all other running cron processes to stop after the current task

-l, --list               Show the list of currently running tasks and how long they have been running

-f, --force              Execute task even if cron is disabled

-e, --enable             Enable cron

-d, --disable            Disable cron

-w, --disable-wait=600   Disable cron and wait until all tasks finished or fail after N seconds (optional param)

-k, --keep-alive=N       Keep this script alive for N seconds and poll for new tasks

                         The default value can be set by administrators in:

                         Site administration > Server > Tasks > Task processing > Keep alive time

Example:

\$sudo -u www-data /usr/bin/php admin/cli/cron.php

";

    echo $help;

    die;

}

if ($options['stop']) {

    // By clearing the caches this signals to other running processes

    // to exit after finishing the current task.

    \core\task\manager::clear_static_caches();

    die;

}

if ($options['enable']) {

    set_config('cron_enabled', 1);

    mtrace('Cron has been enabled for the site.');

    exit(0);

}

if ($options['disable']) {

    set_config('cron_enabled', 0);

    \core\task\manager::clear_static_caches();

    mtrace('Cron has been disabled for the site.');

    exit(0);

}

if ($options['list']) {

    $tasks = \core\task\manager::get_running_tasks();

    mtrace('The list of currently running tasks:');

    $format = "%7s %-12s %-9s %-20s %-52s\n";

    printf(

        $format,

        'PID',

        'HOST',

        'TYPE',

        'TIME',

        'CLASSNAME'

    );

    foreach ($tasks as $task) {

        printf(

            $format,

            $task->pid,

            substr($task->hostname, 0, 12),

            $task->type,

            format_time(time() - $task->timestarted),

            substr($task->classname, 0, 52)

        );

    }

    exit(0);

}

if ($wait = $options['disable-wait']) {

    $started = time();

    if (true === $wait) {

        // Default waiting time.

        $waitsec = 600;

    } else {

        $waitsec = $wait;

        $wait = true;

    }

    set_config('cron_enabled', 0);

    \core\task\manager::clear_static_caches();

    mtrace('Cron has been disabled for the site.');

    mtrace('Allocating ' . format_time($waitsec) . ' for the tasks to finish.');

    $lastcount = 0;

    while ($wait) {

        $tasks = \core\task\manager::get_running_tasks();

        if (count($tasks) == 0) {

            mtrace('');

            mtrace('All scheduled and adhoc tasks finished.');

            exit(0);

        }

        if (time() - $started >= $waitsec) {

            mtrace('');

            mtrace('Wait time (' . format_time($waitsec) . ') elapsed, but ' . count($tasks) . ' task(s) still running.');

            mtrace('Exiting with code 1.');

            exit(1);

        }

        if (count($tasks) !== $lastcount) {

            mtrace('');

            mtrace(count($tasks) . " tasks currently running.", '');

            $lastcount = count($tasks);

        } else {

            mtrace('.', '');

        }

        sleep(1);

    }

}

if (!get_config('core', 'cron_enabled') && !$options['force']) {

    mtrace('Cron is disabled. Use --force to override.');

    exit(1);

}

\core\local\cli\shutdown::script_supports_graceful_exit();

$keepalive = $options['keep-alive'];

\core\cron::run_main_process($keepalive);