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
/**
* @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;
use Friendica\Util\LoggerFactory;
// 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';
$logger = LoggerFactory::create('daemon');
$a = new App(dirname(__DIR__), $logger);
if ($a->getMode()->isInstall()) {
die("Friendica isn't properly installed yet.\n");
}
Config::load();
if (empty(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 = 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->notice("Worker daemon process was killed", ["pid" => $pid]);
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";
// 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->info('Forcing cron worker call.', ["pid" => $pid]);
$do_cron = true;
}
Worker::spawnWorker($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->info("Sleeping", ["pid" => $pid]);
$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->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);
}