gnu-social/lib/queued_xmpp.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

118 lines
3.4 KiB
PHP

<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Queue-mediated proxy class for outgoing XMPP messages.
*
* PHP version 5
*
* LICENCE: 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/>.
*
* @category Network
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR . '/lib/jabber.php';
class Queued_XMPP extends XMPPHP_XMPP
{
/**
* Constructor
*
* @param string $host
* @param integer $port
* @param string $user
* @param string $password
* @param string $resource
* @param string $server
* @param boolean $printlog
* @param string $loglevel
*/
public function __construct($host, $port, $user, $password, $resource, $server = null, $printlog = false, $loglevel = null)
{
parent::__construct($host, $port, $user, $password, $resource, $server, $printlog, $loglevel);
// Normally the fulljid isn't filled out until resource binding time;
// we need to save it here since we're not talking to a real server.
$this->fulljid = "{$this->basejid}/{$this->resource}";
}
/**
* Send a formatted message to the outgoing queue for later forwarding
* to a real XMPP connection.
*
* @param string $msg
*/
public function send($msg, $timeout=NULL)
{
$qm = QueueManager::get('xmppout');
$qm->enqueue(strval($msg), 'xmppout');
}
/**
* Since we'll be getting input through a queue system's run loop,
* we'll process one standalone message at a time rather than our
* own XMPP message pump.
*
* @param string $message
*/
public function processMessage($message) {
$frame = array_shift($this->frames);
xml_parse($this->parser, $frame->body, false);
}
//@{
/**
* Stream i/o functions disabled; push input through processMessage()
*/
public function connect($timeout = 30, $persistent = false, $sendinit = true)
{
throw new Exception("Can't connect to server from XMPP queue proxy.");
}
public function disconnect()
{
throw new Exception("Can't connect to server from XMPP queue proxy.");
}
public function process()
{
throw new Exception("Can't read stream from XMPP queue proxy.");
}
public function processUntil($event, $timeout=-1)
{
throw new Exception("Can't read stream from XMPP queue proxy.");
}
public function read()
{
throw new Exception("Can't read stream from XMPP queue proxy.");
}
public function readyToProcess()
{
throw new Exception("Can't read stream from XMPP queue proxy.");
}
//@}
}