gnu-social/scripts/xmppdaemon.php
Brion Vibber c74aea589d Stomp queue restructuring for mass scalability:
- Multiplexing queues into groups and for multiple sites.
- Sharing vs breakout configurable per site and per queue via $config['queue']['breakout']
- Detect how many times a message is redelivered, discard if it's killed too many daemons
 - count configurable with $config['queue']['max_retries']
 - can dump the items to files in $config['queue']['dead_letter_dir']

Queue daemon memory & resource leak fixes:
- avoid unnecessary reconnections to memcached server (switch persistent connections back in on second initialization, assuming it's child process)
- monkey-patch for leaky .ini loads in DB_DataObject::databaseStructure() - was leaking 200k per active switch
- applied leak fixes to Status_network as well, using intermediate base Safe_DataObject for both it and Memcache_DataObject

Misc queue fixes:
- correct handling of child processes exiting due to signal termination instead of regular exit
- shutdown instead of infinite respawn loop if we're already past the soft memory limit at startup
- Added --all option for xmppdaemon... still opens one xmpp connection per site that has xmpp active

Cache updates:
- add Cache::increment() method with native support for memcached atomic increment
2010-02-16 09:16:51 -08:00

109 lines
3.2 KiB
PHP
Executable File

#!/usr/bin/env php
<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* 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 <http://www.gnu.org/licenses/>.
*/
define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
$shortoptions = 'fi::a';
$longoptions = array('id::', 'foreground', 'all');
$helptext = <<<END_OF_XMPP_HELP
Daemon script for receiving new notices from Jabber users.
-i --id Identity (default none)
-a --all Handle XMPP for all local sites
(requires Stomp queue handler, status_network setup)
-f --foreground Stay in the foreground (default background)
END_OF_XMPP_HELP;
require_once INSTALLDIR.'/scripts/commandline.inc';
require_once INSTALLDIR . '/lib/jabber.php';
class XMPPDaemon extends SpawningDaemon
{
protected $allsites = false;
function __construct($id=null, $daemonize=true, $threads=1, $allsites=false)
{
if ($threads != 1) {
// This should never happen. :)
throw new Exception("XMPPDaemon can must run single-threaded");
}
parent::__construct($id, $daemonize, $threads);
$this->allsites = $allsites;
}
function runThread()
{
common_log(LOG_INFO, 'Waiting to listen to XMPP and queues');
$master = new XmppMaster($this->get_id());
$master->init($this->allsites);
$master->service();
common_log(LOG_INFO, 'terminating normally');
return $master->respawn ? self::EXIT_RESTART : self::EXIT_SHUTDOWN;
}
}
class XmppMaster extends IoMaster
{
/**
* Initialize IoManagers for the currently configured site
* which are appropriate to this instance.
*/
function initManagers()
{
if (common_config('xmpp', 'enabled')) {
$qm = QueueManager::get();
$qm->setActiveGroup('xmpp');
$this->instantiate($qm);
$this->instantiate(XmppManager::get());
}
}
}
// Abort immediately if xmpp is not enabled, otherwise the daemon chews up
// lots of CPU trying to connect to unconfigured servers
// @fixme do this check after we've run through the site list so we
// don't have to find an XMPP site to start up when using --all mode.
if (common_config('xmpp','enabled')==false) {
print "Aborting daemon - xmpp is disabled\n";
exit();
}
if (have_option('i', 'id')) {
$id = get_option_value('i', 'id');
} else if (count($args) > 0) {
$id = $args[0];
} else {
$id = null;
}
$foreground = have_option('f', 'foreground');
$all = have_option('a') || have_option('--all');
$daemon = new XMPPDaemon($id, !$foreground, 1, $all);
$daemon->runOnce();