--- /dev/null
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, 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/>.
+ */
+
+/**
+ * Prepare PuSH and Salmon distributions for an outgoing message.
+ *
+ * @package OStatusPlugin
+ * @author Brion Vibber <brion@status.net>
+ */
+class OStatusQueueHandler extends QueueHandler
+{
+ function transport()
+ {
+ return 'ostatus';
+ }
+
+ function handle($notice)
+ {
+ assert($notice instanceof Notice);
+
+ $this->notice = $notice;
+ $this->user = User::staticGet($notice->profile_id);
+
+ $this->pushUser();
+
+ foreach ($notice->getGroups() as $group) {
+ $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
+ if ($oprofile) {
+ $this->pingReply($oprofile);
+ } else {
+ $this->pushGroup($group->id);
+ }
+ }
+
+ foreach ($notice->getReplies() as $profile_id) {
+ $oprofile = Ostatus_profile::staticGet('profile_id', $profile_id);
+ if ($oprofile) {
+ $this->pingReply($oprofile);
+ }
+ }
+
+ return true;
+ }
+
+ function pushUser()
+ {
+ if ($this->user) {
+ // For local posts, ping the PuSH hub to update their feed.
+ // http://identi.ca/api/statuses/user_timeline/1.atom
+ $feed = common_local_url('ApiTimelineUser',
+ array('id' => $this->user->id,
+ 'format' => 'atom'));
+ $this->pushFeed($feed, array($this, 'userFeedForNotice'));
+ }
+ }
+
+ function pushGroup($group_id)
+ {
+ // For a local group, ping the PuSH hub to update its feed.
+ // Updates may come from either a local or a remote user.
+ $feed = common_local_url('ApiTimelineGroup',
+ array('id' => $group_id,
+ 'format' => 'atom'));
+ $this->pushFeed($feed, array($this, 'groupFeedForNotice'), $group_id);
+ }
+
+ function pingReply($oprofile)
+ {
+ if ($this->user) {
+ if (!empty($oprofile->salmonuri)) {
+ // For local posts, send a Salmon ping to the mentioned
+ // remote user or group.
+ // @fixme as an optimization we can skip this if the
+ // remote profile is subscribed to the author.
+
+ common_log(LOG_INFO, "Prepping to send notice '{$this->notice->uri}' to remote profile '{$oprofile->uri}'.");
+
+ $xml = '<?xml version="1.0" encoding="UTF-8" ?' . '>';
+ $xml .= $this->notice->asAtomEntry(true, true);
+
+ $data = array('salmonuri' => $oprofile->salmonuri,
+ 'entry' => $xml);
+
+ $qm = QueueManager::get();
+ $qm->enqueue($data, 'salmonout');
+ }
+ }
+ }
+
+ /**
+ * @param string $feed URI to the feed
+ * @param callable $callback function to generate Atom feed update if needed
+ * any additional params are passed to the callback.
+ */
+ function pushFeed($feed, $callback)
+ {
+ $hub = common_config('ostatus', 'hub');
+ if ($hub) {
+ $this->pushFeedExternal($feed, $hub);
+ }
+
+ $sub = new HubSub();
+ $sub->topic = $feed;
+ if ($sub->find()) {
+ $args = array_slice(func_get_args(), 2);
+ $atom = call_user_func_array($callback, $args);
+ $this->pushFeedInternal($atom, $sub);
+ } else {
+ common_log(LOG_INFO, "No PuSH subscribers for $feed");
+ }
+ return true;
+ }
+
+ /**
+ * Ping external hub about this update.
+ * The hub will pull the feed and check for new items later.
+ * Not guaranteed safe in an environment with database replication.
+ *
+ * @param string $feed feed topic URI
+ * @param string $hub PuSH hub URI
+ * @fixme can consolidate pings for user & group posts
+ */
+ function pushFeedExternal($feed, $hub)
+ {
+ $client = new HTTPClient();
+ try {
+ $data = array('hub.mode' => 'publish',
+ 'hub.url' => $feed);
+ $response = $client->post($hub, array(), $data);
+ if ($response->getStatus() == 204) {
+ common_log(LOG_INFO, "PuSH ping to hub $hub for $feed ok");
+ return true;
+ } else {
+ common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed with HTTP " .
+ $response->getStatus() . ': ' .
+ $response->getBody());
+ }
+ } catch (Exception $e) {
+ common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed: " . $e->getMessage());
+ return false;
+ }
+ }
+
+ /**
+ * Queue up direct feed update pushes to subscribers on our internal hub.
+ * @param string $atom update feed, containing only new/changed items
+ * @param HubSub $sub open query of subscribers
+ */
+ function pushFeedInternal($atom, $sub)
+ {
+ common_log(LOG_INFO, "Preparing $sub->N PuSH distribution(s) for $sub->topic");
+ while ($sub->fetch()) {
+ $sub->distribute($atom);
+ }
+ }
+
+ /**
+ * Build a single-item version of the sending user's Atom feed.
+ * @return string
+ */
+ function userFeedForNotice()
+ {
+ // @fixme this feels VERY hacky...
+ // should probably be a cleaner way to do it
+
+ ob_start();
+ $api = new ApiTimelineUserAction();
+ $api->prepare(array('id' => $this->notice->profile_id,
+ 'format' => 'atom',
+ 'max_id' => $this->notice->id,
+ 'since_id' => $this->notice->id - 1));
+ $api->showTimeline();
+ $feed = ob_get_clean();
+
+ // ...and override the content-type back to something normal... eww!
+ // hope there's no other headers that got set while we weren't looking.
+ header('Content-Type: text/html; charset=utf-8');
+
+ common_log(LOG_DEBUG, $feed);
+ return $feed;
+ }
+
+ function groupFeedForNotice($group_id)
+ {
+ // @fixme this feels VERY hacky...
+ // should probably be a cleaner way to do it
+
+ ob_start();
+ $api = new ApiTimelineGroupAction();
+ $args = array('id' => $group_id,
+ 'format' => 'atom',
+ 'max_id' => $this->notice->id,
+ 'since_id' => $this->notice->id - 1);
+ $api->prepare($args);
+ $api->handle($args);
+ $feed = ob_get_clean();
+
+ // ...and override the content-type back to something normal... eww!
+ // hope there's no other headers that got set while we weren't looking.
+ header('Content-Type: text/html; charset=utf-8');
+
+ common_log(LOG_DEBUG, $feed);
+ return $feed;
+ }
+
+}
+
projects / quix0rs-gnu-social.git / blobdiff