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