Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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#!/usr/bin/env php
<?php
/**
* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* Run the worker from a daemon.
*
* This script was taken from http://php.net/manual/en/function.pcntl-fork.php
*/
if (php_sapi_name() !== 'cli') {
header($_SERVER["SERVER_PROTOCOL"] . ' 403 Forbidden');
exit();
}
use Dice\Dice;
use Friendica\App\Mode;
use Friendica\Core\Logger;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Util\DateTimeFormat;
use Psr\Log\LoggerInterface;
// Get options
$shortopts = 'f';
$longopts = ['foreground'];
$options = getopt($shortopts, $longopts);
// Ensure that daemon.php is executed from the base path of the installation
if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
$directory = dirname($_SERVER["argv"][0]);
if (substr($directory, 0, 1) != "/") {
$directory = $_SERVER["PWD"] . "/" . $directory;
}
$directory = realpath($directory . "/..");
chdir($directory);
}
require dirname(__DIR__) . '/vendor/autoload.php';
$dice = (new Dice())->addRules(include __DIR__ . '/../static/dependencies.config.php');
$dice = $dice->addRule(LoggerInterface::class,['constructParams' => ['daemon']]);
DI::init($dice);
$a = DI::app();
if (DI::mode()->isInstall()) {
die("Friendica isn't properly installed yet.\n");
}
DI::mode()->setExecutor(Mode::DAEMON);
DI::config()->load();
if (empty(DI::config()->get('system', 'pidfile'))) {
die(<<<TXT
Please set system.pidfile in config/local.config.php. For example:
'system' => [
'pidfile' => '/path/to/daemon.pid',
],
TXT
);
}
$pidfile = DI::config()->get('system', 'pidfile');
if (in_array("start", $_SERVER["argv"])) {
$mode = "start";
}
if (in_array("stop", $_SERVER["argv"])) {
$mode = "stop";
}
if (in_array("status", $_SERVER["argv"])) {
$mode = "status";
}
$foreground = array_key_exists('f', $options) || array_key_exists('foreground', $options);
if (!isset($mode)) {
die("Please use either 'start', 'stop' or 'status'.\n");
}
if (empty($_SERVER["argv"][0])) {
die("Unexpected script behaviour. This message should never occur.\n");
}
$pid = null;
if (is_readable($pidfile)) {
$pid = intval(file_get_contents($pidfile));
}
if (empty($pid) && in_array($mode, ["stop", "status"])) {
DI::config()->set('system', 'worker_daemon_mode', false);
die("Pidfile wasn't found. Is the daemon running?\n");
}
if ($mode == "status") {
if (posix_kill($pid, 0)) {
die("Daemon process $pid is running.\n");
}
unlink($pidfile);
DI::config()->set('system', 'worker_daemon_mode', false);
die("Daemon process $pid isn't running.\n");
}
if ($mode == "stop") {
posix_kill($pid, SIGTERM);
unlink($pidfile);
Logger::notice("Worker daemon process was killed", ["pid" => $pid]);
DI::config()->set('system', 'worker_daemon_mode', false);
die("Worker daemon process $pid was killed.\n");
}
if (!empty($pid) && posix_kill($pid, 0)) {
die("Daemon process $pid is already running.\n");
}
Logger::notice('Starting worker daemon.', ["pid" => $pid]);
if (!$foreground) {
echo "Starting worker daemon.\n";
DBA::disconnect();
// Fork a daemon process
$pid = pcntl_fork();
if ($pid == -1) {
echo "Daemon couldn't be forked.\n";
Logger::warning('Could not fork daemon');
exit(1);
} elseif ($pid) {
// The parent process continues here
echo 'Child process started with pid ' . $pid . ".\n";
Logger::notice('Child process started', ['pid' => $pid]);
file_put_contents($pidfile, $pid);
exit(0);
}
// We now are in the child process
register_shutdown_function('shutdown');
// Make the child the main process, detach it from the terminal
if (posix_setsid() < 0) {
return;
}
// Closing all existing connections with the outside
fclose(STDIN);
// And now connect the database again
DBA::connect();
}
DI::config()->set('system', 'worker_daemon_mode', true);
// Just to be sure that this script really runs endlessly
set_time_limit(0);
$wait_interval = intval(DI::config()->get('system', 'cron_interval', 5)) * 60;
$do_cron = true;
$last_cron = 0;
// Now running as a daemon.
while (true) {
if (!$do_cron && ($last_cron + $wait_interval) < time()) {
Logger::info('Forcing cron worker call.', ["pid" => $pid]);
$do_cron = true;
}
if ($do_cron || (!DI::process()->isMaxLoadReached() && Worker::entriesExists() && Worker::isReady())) {
Worker::spawnWorker($do_cron);
} else {
Logger::info('Cool down for 5 seconds', ['pid' => $pid]);
sleep(5);
}
if ($do_cron) {
// We force a reconnect of the database connection.
// This is done to ensure that the connection don't get lost over time.
DBA::reconnect();
$last_cron = time();
}
$start = time();
Logger::info("Sleeping", ["pid" => $pid, 'until' => gmdate(DateTimeFormat::MYSQL, $start + $wait_interval)]);
do {
$seconds = (time() - $start);
// logarithmic wait time calculation.
// Background: After jobs had been started, they often fork many workers.
// To not waste too much time, the sleep period increases.
$arg = (($seconds + 1) / ($wait_interval / 9)) + 1;
$sleep = min(1000000, round(log10($arg) * 1000000, 0));
usleep($sleep);
$pid = pcntl_waitpid(-1, $status, WNOHANG);
if ($pid > 0) {
Logger::info('Children quit via pcntl_waitpid', ['pid' => $pid, 'status' => $status]);
}
$timeout = ($seconds >= $wait_interval);
} while (!$timeout && !Worker::IPCJobsExists());
if ($timeout) {
$do_cron = true;
Logger::info("Woke up after $wait_interval seconds.", ["pid" => $pid, 'sleep' => $wait_interval]);
} else {
$do_cron = false;
Logger::info("Worker jobs are calling to be forked.", ["pid" => $pid]);
}
}
function shutdown() {
posix_kill(posix_getpid(), SIGHUP);
}