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-rw-r--r--plugins/Comet/CometPlugin.php138
1 files changed, 138 insertions, 0 deletions
diff --git a/plugins/Comet/CometPlugin.php b/plugins/Comet/CometPlugin.php
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+++ b/plugins/Comet/CometPlugin.php
@@ -0,0 +1,138 @@
+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * Plugin to do "real time" updates using Comet/Bayeux
+ *
+ * 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 Plugin
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @copyright 2009 Control Yourself, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+if (!defined('LACONICA')) {
+ exit(1);
+}
+
+/**
+ * Plugin to do realtime updates using Comet
+ *
+ * @category Plugin
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+class CometPlugin extends Plugin
+{
+ var $server = null;
+
+ function __construct($server=null)
+ {
+ $this->server = $server;
+
+ parent::__construct();
+ }
+
+ function onEndShowScripts($action)
+ {
+ $timeline = null;
+
+ switch ($action->trimmed('action')) {
+ case 'public':
+ $timeline = '/timelines/public';
+ break;
+ default:
+ return true;
+ }
+
+ $action->element('script', array('type' => 'text/javascript',
+ 'src' => common_path('plugins/Comet/jquery.comet.js')),
+ ' ');
+ $action->elementStart('script', array('type' => 'text/javascript'));
+ $action->raw("var _timelineServer = \"$this->server\"; ".
+ "var _timeline = \"$timeline\";");
+ $action->elementEnd('script');
+ $action->element('script', array('type' => 'text/javascript',
+ 'src' => common_path('plugins/Comet/updatetimeline.js')),
+ ' ');
+ return true;
+ }
+
+ function onEndNoticeSave($notice)
+ {
+ $this->log(LOG_INFO, "Called for save notice.");
+
+ $timelines = array();
+
+ // XXX: Add other timelines; this is just for the public one
+
+ if ($notice->is_local ||
+ ($notice->is_local == 0 && !common_config('public', 'localonly'))) {
+ $timelines[] = '/timelines/public';
+ }
+
+ if (count($timelines) > 0) {
+ // Require this, since we need it
+ require_once(INSTALLDIR.'/plugins/Comet/bayeux.class.inc.php');
+
+ $json = $this->noticeAsJson($notice);
+
+ $this->log(LOG_DEBUG, "JSON = '$json'");
+
+ // Bayeux? Comet? Huh? These terms confuse me
+ $bay = new Bayeux($this->server);
+
+ foreach ($timelines as $timeline) {
+ $this->log(LOG_INFO, "Posting notice $notice->id to '$timeline'.");
+ $bay->publish($timeline, $json);
+ $this->log(LOG_DEBUG, "Done posting notice $notice->id to '$timeline'.");
+ }
+
+ $bay = NULL;
+ }
+
+ $this->log(LOG_DEBUG, "All done.");
+ return true;
+ }
+
+ function noticeAsJson($notice)
+ {
+ // FIXME: this code should be abstracted to a neutral third
+ // party, like Notice::asJson(). I'm not sure of the ethics
+ // of refactoring from within a plugin, so I'm just abusing
+ // the TwitterApiAction method. Don't do this unless you're me!
+
+ require_once(INSTALLDIR.'/lib/twitterapi.php');
+
+ $act = new TwitterApiAction('/dev/null');
+
+ $arr = $act->twitter_status_array($notice, true);
+ return $arr;
+ }
+
+ // Push this up to Plugin
+
+ function log($level, $msg)
+ {
+ common_log($level, get_class($this) . ': '.$msg);
+ }
+}