gnu-social/plugins/Enjit/enjitqueuehandler.php
Brion Vibber ec145b73fc Major refactoring of queue handlers to support running multiple sites in one daemon.
Key changes:
* Initialization code moved from common.php to StatusNet class;
  can now switch configurations during runtime.
* As a consequence, configuration files must now be idempotent...
  Be careful with constant, function or class definitions.
* Control structure for daemons/QueueManager/QueueHandler has been refactored;
  the run loop is now managed by IoMaster run via scripts/queuedaemon.php
  IoManager subclasses are woken to handle socket input or polling, and may
  cover multiple sites.
* Plugins can implement notice queue handlers more easily by registering a
  QueueHandler class; no more need to add a daemon.

The new QueueDaemon runs from scripts/queuedaemon.php:

* This replaces most of the old *handler.php scripts; they've been refactored
  to the bare handler classes.
* Spawns multiple child processes to spread load; defaults to CPU count on
  Linux and Mac OS X systems, or override with --threads=N
* When multithreaded, child processes are automatically respawned on failure.
* Threads gracefully shut down and restart when passing a soft memory limit
  (defaults to 90% of memory_limit), limiting damage from memory leaks.
* Support for UDP-based monitoring: http://www.gitorious.org/snqmon

Rough control flow diagram:
QueueDaemon -> IoMaster -> IoManager
                           QueueManager [listen or poll] -> QueueHandler
                           XmppManager [ping & keepalive]
                           XmppConfirmManager [poll updates]

Todo:

* Respawning features not currently available running single-threaded.
* When running single-site, configuration changes aren't picked up.
* New sites or config changes affecting queue subscriptions are not yet
  handled without a daemon restart.
* SNMP monitoring output to integrate with general tools (nagios, ganglia)
* Convert XMPP confirmation message sends to use stomp queue instead of polling
* Convert xmppdaemon.php to IoManager?
* Convert Twitter status, friends import polling daemons to IoManager
* Clean up some error reporting and failure modes
* May need to adjust queue priorities for best perf in backlog/flood cases

Detailed code history available in my daemon-work branch:
http://www.gitorious.org/~brion/statusnet/brion-fixes/commits/daemon-work
2010-01-12 20:45:09 -08:00

92 lines
3.3 KiB
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/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* Queue handler for watching new notices and posting to enjit.
* @fixme is this actually being used/functional atm?
*/
class EnjitQueueHandler extends QueueHandler
{
function transport()
{
return 'enjit';
}
function start()
{
$this->log(LOG_INFO, "Starting EnjitQueueHandler");
$this->log(LOG_INFO, "Broadcasting to ".common_config('enjit', 'apiurl'));
return true;
}
function handle_notice($notice)
{
$profile = Profile::staticGet($notice->profile_id);
$this->log(LOG_INFO, "Posting Notice ".$notice->id." from ".$profile->nickname);
if ( ! $notice->is_local ) {
$this->log(LOG_INFO, "Skipping remote notice");
return "skipped";
}
#
# Build an Atom message from the notice
#
$noticeurl = common_local_url('shownotice', array('notice' => $notice->id));
$msg = $profile->nickname . ': ' . $notice->content;
$atom = "<entry xmlns='http://www.w3.org/2005/Atom'>\n";
$atom .= "<apisource>".common_config('enjit','source')."</apisource>\n";
$atom .= "<source>\n";
$atom .= "<title>" . $profile->nickname . " - " . common_config('site', 'name') . "</title>\n";
$atom .= "<link href='" . $profile->profileurl . "'/>\n";
$atom .= "<link rel='self' type='application/rss+xml' href='" . common_local_url('userrss', array('nickname' => $profile->nickname)) . "'/>\n";
$atom .= "<author><name>" . $profile->nickname . "</name></author>\n";
$atom .= "<icon>" . $profile->avatarUrl(AVATAR_PROFILE_SIZE) . "</icon>\n";
$atom .= "</source>\n";
$atom .= "<title>" . htmlspecialchars($msg) . "</title>\n";
$atom .= "<summary>" . htmlspecialchars($msg) . "</summary>\n";
$atom .= "<link rel='alternate' href='" . $noticeurl . "' />\n";
$atom .= "<id>". $notice->uri . "</id>\n";
$atom .= "<published>".common_date_w3dtf($notice->created)."</published>\n";
$atom .= "<updated>".common_date_w3dtf($notice->modified)."</updated>\n";
$atom .= "</entry>\n";
$url = common_config('enjit', 'apiurl') . "/submit/". common_config('enjit','apikey');
$data = array(
'msg' => $atom,
);
#
# POST the message to $config['enjit']['apiurl']
#
$request = HTTPClient::start();
$response = $request->post($url, null, $data);
return $response->isOk();
}
}