mirror of https://github.com/friendica/friendica
136 lines
3.1 KiB
PHP
136 lines
3.1 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2022, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Core\Worker;
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use Friendica\App\Mode;
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use Friendica\Core\Logger;
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use Friendica\DI;
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/**
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* Contains the class for the worker background job processing
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*/
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class Daemon
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{
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private static $mode = null;
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/**
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* Checks if the worker is running in the daemon mode.
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*
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* @return boolean
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*/
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public static function isMode()
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{
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if (!is_null(self::$mode)) {
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return self::$mode;
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}
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if (DI::mode()->getExecutor() == Mode::DAEMON) {
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return true;
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}
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$daemon_mode = DI::config()->get('system', 'worker_daemon_mode', false, true);
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if ($daemon_mode) {
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return $daemon_mode;
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}
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if (!function_exists('pcntl_fork')) {
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self::$mode = false;
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return false;
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}
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$pidfile = DI::config()->get('system', 'pidfile');
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if (empty($pidfile)) {
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// No pid file, no daemon
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self::$mode = false;
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return false;
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}
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if (!is_readable($pidfile)) {
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// No pid file. We assume that the daemon had been intentionally stopped.
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self::$mode = false;
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return false;
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}
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$pid = intval(file_get_contents($pidfile));
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$running = posix_kill($pid, 0);
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self::$mode = $running;
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return $running;
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}
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/**
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* Test if the daemon is running. If not, it will be started
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*
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* @return void
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*/
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public static function checkState()
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{
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if (!DI::config()->get('system', 'daemon_watchdog', false)) {
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return;
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}
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if (!DI::mode()->isNormal()) {
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return;
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}
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// Check every minute if the daemon is running
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if (DI::config()->get('system', 'last_daemon_check', 0) + 60 > time()) {
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return;
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}
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DI::config()->set('system', 'last_daemon_check', time());
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$pidfile = DI::config()->get('system', 'pidfile');
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if (empty($pidfile)) {
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// No pid file, no daemon
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return;
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}
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if (!is_readable($pidfile)) {
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// No pid file. We assume that the daemon had been intentionally stopped.
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return;
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}
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$pid = intval(file_get_contents($pidfile));
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if (posix_kill($pid, 0)) {
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Logger::info('Daemon process is running', ['pid' => $pid]);
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return;
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}
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Logger::warning('Daemon process is not running', ['pid' => $pid]);
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self::spawn();
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}
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/**
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* Spawn a new daemon process
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*
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* @return void
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*/
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private static function spawn()
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{
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Logger::notice('Starting new daemon process');
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DI::system()->run('bin/daemon.php', ['start']);
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Logger::notice('New daemon process started');
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}
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}
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