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- #!/usr/bin/env php
- <?php
- /**
- * @file bin/daemon.php
- * @brief Run the worker from a daemon.
- *
- * This script was taken from http://php.net/manual/en/function.pcntl-fork.php
- */
-
- use Friendica\App;
- use Friendica\Core\Config;
- use Friendica\Core\Worker;
- use Friendica\Database\DBA;
-
- // 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_once "boot.php";
- require_once "include/dba.php";
-
- $a = new App(dirname(__DIR__));
-
- if ($a->getMode()->isInstall()) {
- die("Friendica isn't properly installed yet.\n");
- }
-
- Config::load();
-
- if (empty(Config::get('system', 'pidfile'))) {
- die('Please set system.pidfile in config/local.ini.php. For example:'."\n".
- '[system]'."\n".
- 'pidfile = /path/to/daemon.pid'."\n");
- }
-
- $pidfile = 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"])) {
- 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);
-
- 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("Worker daemon process $pid was killed.", LOGGER_DEBUG);
-
- 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 $pid is already running.\n");
- }
-
- logger('Starting worker daemon.', LOGGER_DEBUG);
-
- if (!$foreground) {
- echo "Starting worker daemon.\n";
-
- // Switch over to daemon mode.
- if ($pid = pcntl_fork()) {
- return; // Parent
- }
-
- fclose(STDIN); // Close all of the standard
-
- // Enabling this seem to block a running php process with 100% CPU usage when there is an outpout
- // fclose(STDOUT); // file descriptors as we
- // fclose(STDERR); // are running as a daemon.
-
- DBA::disconnect();
-
- register_shutdown_function('shutdown');
-
- if (posix_setsid() < 0) {
- return;
- }
-
- if ($pid = pcntl_fork()) {
- return; // Parent
- }
-
- $pid = getmypid();
- file_put_contents($pidfile, $pid);
-
- // We lose the database connection upon forking
- $a->loadDatabase();
- }
-
- Config::set('system', 'worker_daemon_mode', true);
-
- // Just to be sure that this script really runs endlessly
- set_time_limit(0);
-
- $wait_interval = intval(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('Forcing cron worker call.', LOGGER_DEBUG);
- $do_cron = true;
- }
-
- Worker::spawnWorker($do_cron);
-
- 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();
- }
-
- logger("Sleeping", LOGGER_DEBUG);
- $start = time();
- 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;
- $sleep = round(log10($arg) * 1000000, 0);
- usleep($sleep);
-
- $timeout = ($seconds >= $wait_interval);
- } while (!$timeout && !Worker::IPCJobsExists());
-
- if ($timeout) {
- $do_cron = true;
- logger("Woke up after $wait_interval seconds.", LOGGER_DEBUG);
- } else {
- $do_cron = false;
- logger("Worker jobs are calling to be forked.", LOGGER_DEBUG);
- }
- }
-
- function shutdown() {
- posix_kill(posix_getpid(), SIGHUP);
- }
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