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\BaseObject;
use Friendica\Core\Config;
use Friendica\Core\Worker;
// 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";
$a = new App(dirname(__DIR__));
BaseObject::setApp($a);
require_once ".htconfig.php";
dba::connect($db_host, $db_user, $db_pass, $db_data);
Config::load();
if (!isset($pidfile)) {
die('Please specify a pid file in the variable $pidfile in the .htconfig.php. For example:'."\n".
'$pidfile = "/path/to/daemon.pid";'."\n");
}
if (in_array("start", $_SERVER["argv"])) {
$mode = "start";
}
if (in_array("stop", $_SERVER["argv"])) {
$mode = "stop";
}
if (in_array("status", $_SERVER["argv"])) {
$mode = "status";
}
if (!isset($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");
}
$pid = @file_get_contents($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 $pid is already running.\n");
}
logger('Starting worker daemon.', LOGGER_DEBUG);
echo "Starting worker daemon.\n";
// Switch over to daemon mode.
if ($pid = pcntl_fork()) {
return; // Parent
}
fclose(STDIN); // Close all of the standard
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 ($pid = pcntl_fork()) {
return; // Parent
}
// We lose the database connection upon forking
dba::connect($db_host, $db_user, $db_pass, $db_data);
unset($db_host, $db_user, $db_pass, $db_data);
Config::set('system', 'worker_daemon_mode', true);
// Just to be sure that this script really runs endlessly
set_time_limit(0);
$pid = getmypid();
file_put_contents($pidfile, $pid);
$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);
$i = 0;
do {
sleep(1);
} while (($i++ < $wait_interval) && !Worker::IPCJobsExists());
if ($i >= $wait_interval) {
$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);
}