313 lines
9.3 KiB
PHP
Executable File
313 lines
9.3 KiB
PHP
Executable File
#!/usr/bin/env php
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<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2008-2010, StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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define('INSTALLDIR', realpath(dirname(__FILE__) . '/../../..'));
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$shortoptions = 'fi::a';
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$longoptions = array('id::', 'foreground', 'all');
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$helptext = <<<END_OF_TWITTERDAEMON_HELP
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Daemon script for receiving new notices from Twitter users.
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-i --id Identity (default none)
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-a --all Handle Twitter for all local sites
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(requires Stomp queue handler, status_network setup)
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-f --foreground Stay in the foreground (default background)
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END_OF_TWITTERDAEMON_HELP;
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require_once INSTALLDIR.'/scripts/commandline.inc';
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class TwitterDaemon extends SpawningDaemon
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{
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protected $allsites = false;
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function __construct($id=null, $daemonize=true, $threads=1, $allsites=false)
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{
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if ($threads != 1) {
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// This should never happen. :)
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throw new Exception("TwitterDaemon must run single-threaded");
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}
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parent::__construct($id, $daemonize, $threads);
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$this->allsites = $allsites;
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}
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function runThread()
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{
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common_log(LOG_INFO, 'Waiting to listen to Twitter and queues');
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$master = new TwitterMaster($this->get_id(), $this->processManager());
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$master->init($this->allsites);
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$master->service();
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common_log(LOG_INFO, 'terminating normally');
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return $master->respawn ? self::EXIT_RESTART : self::EXIT_SHUTDOWN;
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}
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}
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class TwitterMaster extends IoMaster
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{
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protected $processManager;
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function __construct($id, $processManager)
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{
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parent::__construct($id);
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$this->processManager = $processManager;
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}
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/**
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* Initialize IoManagers for the currently configured site
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* which are appropriate to this instance.
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*/
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function initManagers()
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{
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$qm = QueueManager::get();
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$qm->setActiveGroup('twitter');
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$this->instantiate($qm);
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$this->instantiate(new TwitterManager());
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$this->instantiate($this->processManager);
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}
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}
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class TwitterManager extends IoManager
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{
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// Recommended resource limits from http://dev.twitter.com/pages/site_streams
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const MAX_STREAMS = 1000;
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const USERS_PER_STREAM = 100;
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const STREAMS_PER_SECOND = 20;
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protected $streams;
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protected $users;
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/**
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* Pull the site's active Twitter-importing users and start spawning
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* some data streams for them!
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*
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* @fixme check their last-id and check whether we'll need to do a manual pull.
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* @fixme abstract out the fetching so we can work over multiple sites.
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*/
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protected function initStreams()
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{
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common_log(LOG_INFO, 'init...');
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// Pull Twitter user IDs for all users we want to pull data for
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$flink = new Foreign_link();
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$flink->service = TWITTER_SERVICE;
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// @fixme probably should do the bitfield check in a whereAdd but it's ugly :D
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$flink->find();
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$userIds = array();
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while ($flink->fetch()) {
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if (($flink->noticesync & FOREIGN_NOTICE_RECV) ==
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FOREIGN_NOTICE_RECV) {
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$userIds[] = $flink->foreign_id;
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if (count($userIds) >= self::USERS_PER_STREAM) {
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$this->spawnStream($userIds);
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$userIds = array();
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}
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}
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}
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if (count($userIds)) {
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$this->spawnStream($userIds);
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}
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}
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/**
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* Prepare a Site Stream connection for the given chunk of users.
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* The actual connection will be opened later.
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*
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* @param $userIds array of Twitter-side user IDs
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*/
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protected function spawnStream($userIds)
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{
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$stream = $this->initSiteStream();
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$stream->followUsers($userIds);
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// Slip the stream reader into our list of active streams.
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// We'll manage its actual connection on the next go-around.
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$this->streams[] = $stream;
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// Record the user->stream mappings; this makes it easier for us to know
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// later if we need to kill something.
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foreach ($userIds as $id) {
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$this->users[$id] = $stream;
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}
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}
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/**
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* Initialize a generic site streams connection object.
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* All our connections will look like this, then we'll add users to them.
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*
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* @return TwitterStreamReader
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*/
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protected function initSiteStream()
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{
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$auth = $this->siteStreamAuth();
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$stream = new TwitterSiteStream($auth);
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// Add our event handler callbacks. Whee!
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$this->setupEvents($stream);
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return $stream;
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}
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/**
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* Fetch the Twitter OAuth credentials to use to connect to the Site Streams API.
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*
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* This will use the locally-stored credentials for the applictation's owner account
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* from the site configuration. These should be configured through the administration
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* panels or manually in the config file.
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*
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* Will throw an exception if no credentials can be found -- but beware that invalid
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* credentials won't cause breakage until later.
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*
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* @return TwitterOAuthClient
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*/
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protected function siteStreamAuth()
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{
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$token = common_config('twitter', 'stream_token');
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$secret = common_config('twitter', 'stream_secret');
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if (empty($token) || empty($secret)) {
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throw new ServerException('Twitter site streams have not been correctly configured. Configure the app owner account via the admin panel.');
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}
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return new TwitterOAuthClient($token, $secret);
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}
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/**
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* Collect the sockets for all active connections for i/o monitoring.
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*
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* @return array of resources
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*/
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public function getSockets()
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{
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$sockets = array();
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foreach ($this->streams as $stream) {
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foreach ($stream->getSockets() as $socket) {
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$sockets[] = $socket;
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}
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}
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return $sockets;
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}
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/**
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* We're ready to process input from one of our data sources! Woooooo!
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* @fixme is there an easier way to map from socket back to owning module? :(
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*
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* @param resource $socket
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* @return boolean success
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*/
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public function handleInput($socket)
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{
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foreach ($this->streams as $stream) {
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foreach ($stream->getSockets() as $aSocket) {
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if ($socket === $aSocket) {
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$stream->handleInput($socket);
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}
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}
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}
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return true;
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}
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/**
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* Start the i/o system up! Prepare our connections and start opening them.
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*
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* @fixme do some rate-limiting on the stream setup
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* @fixme do some sensible backoff on failure etc
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*/
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public function start()
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{
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$this->initStreams();
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foreach ($this->streams as $stream) {
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$stream->connect();
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}
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return true;
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}
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/**
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* Close down our connections when the daemon wraps up for business.
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*/
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public function finish()
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{
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foreach ($this->streams as $index => $stream) {
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$stream->close();
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unset($this->streams[$index]);
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}
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return true;
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}
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public static function get()
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{
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throw new Exception('not a singleton');
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}
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/**
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* Set up event handlers on the streaming interface.
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*
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* @fixme add more event types as we add handling for them
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*/
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protected function setupEvents(TwitterStreamReader $stream)
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{
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$handlers = array(
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'status',
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);
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foreach ($handlers as $event) {
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$stream->hookEvent($event, array($this, 'onTwitter' . ucfirst($event)));
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}
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}
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/**
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* Event callback notifying that a user has a new message in their home timeline.
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* We store the incoming message into the queues for processing, keeping our own
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* daemon running as shiny-fast as possible.
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*
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* @param object $status JSON data: Twitter status update
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* @fixme in all-sites mode we may need to route queue items into another site's
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* destination queues, or multiple sites.
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*/
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protected function onTwitterStatus($status, $context)
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{
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$data = array(
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'status' => $status,
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'for_user' => $context->for_user,
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);
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$qm = QueueManager::get();
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$qm->enqueue($data, 'tweetin');
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}
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}
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if (have_option('i', 'id')) {
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$id = get_option_value('i', 'id');
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} else if (count($args) > 0) {
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$id = $args[0];
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} else {
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$id = null;
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}
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$foreground = have_option('f', 'foreground');
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$all = have_option('a') || have_option('--all');
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$daemon = new TwitterDaemon($id, !$foreground, 1, $all);
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$daemon->runOnce();
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