3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2010, StatusNet, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * Prepare PuSH and Salmon distributions for an outgoing message.
23 * @package OStatusPlugin
24 * @author Brion Vibber <brion@status.net>
26 class OStatusQueueHandler extends QueueHandler
28 // If we have more than this many subscribing sites on a single feed,
29 // break up the PuSH distribution into smaller batches which will be
30 // rolled into the queue progressively. This reduces disruption to
31 // other, shorter activities being enqueued while we work.
32 const MAX_UNBATCHED = 50;
34 // Each batch (a 'hubprep' entry) will have this many items.
35 // Selected to provide a balance between queue packet size
36 // and number of batches that will end up getting processed.
37 // For 20,000 target sites, 1000 should work acceptably.
38 const BATCH_SIZE = 1000;
45 function handle($notice)
47 assert($notice instanceof Notice);
49 $this->notice = $notice;
50 $this->user = User::staticGet($notice->profile_id);
54 foreach ($notice->getGroups() as $group) {
55 $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
57 $this->pingReply($oprofile);
59 $this->pushGroup($group->id);
63 foreach ($notice->getReplies() as $profile_id) {
64 $oprofile = Ostatus_profile::staticGet('profile_id', $profile_id);
66 $this->pingReply($oprofile);
76 // For local posts, ping the PuSH hub to update their feed.
77 // http://identi.ca/api/statuses/user_timeline/1.atom
78 $feed = common_local_url('ApiTimelineUser',
79 array('id' => $this->user->id,
81 $this->pushFeed($feed, array($this, 'userFeedForNotice'));
85 function pushGroup($group_id)
87 // For a local group, ping the PuSH hub to update its feed.
88 // Updates may come from either a local or a remote user.
89 $feed = common_local_url('ApiTimelineGroup',
90 array('id' => $group_id,
92 $this->pushFeed($feed, array($this, 'groupFeedForNotice'), $group_id);
95 function pingReply($oprofile)
98 // For local posts, send a Salmon ping to the mentioned
99 // remote user or group.
100 // @fixme as an optimization we can skip this if the
101 // remote profile is subscribed to the author.
102 $oprofile->notifyDeferred($this->notice, $this->user);
107 * @param string $feed URI to the feed
108 * @param callable $callback function to generate Atom feed update if needed
109 * any additional params are passed to the callback.
111 function pushFeed($feed, $callback)
113 $hub = common_config('ostatus', 'hub');
115 $this->pushFeedExternal($feed, $hub);
121 $args = array_slice(func_get_args(), 2);
122 $atom = call_user_func_array($callback, $args);
123 $this->pushFeedInternal($atom, $sub);
125 common_log(LOG_INFO, "No PuSH subscribers for $feed");
131 * Ping external hub about this update.
132 * The hub will pull the feed and check for new items later.
133 * Not guaranteed safe in an environment with database replication.
135 * @param string $feed feed topic URI
136 * @param string $hub PuSH hub URI
137 * @fixme can consolidate pings for user & group posts
139 function pushFeedExternal($feed, $hub)
141 $client = new HTTPClient();
143 $data = array('hub.mode' => 'publish',
145 $response = $client->post($hub, array(), $data);
146 if ($response->getStatus() == 204) {
147 common_log(LOG_INFO, "PuSH ping to hub $hub for $feed ok");
150 common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed with HTTP " .
151 $response->getStatus() . ': ' .
152 $response->getBody());
154 } catch (Exception $e) {
155 common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed: " . $e->getMessage());
161 * Queue up direct feed update pushes to subscribers on our internal hub.
162 * If there are a large number of subscriber sites, intermediate bulk
163 * distribution triggers may be queued.
165 * @param string $atom update feed, containing only new/changed items
166 * @param HubSub $sub open query of subscribers
168 function pushFeedInternal($atom, $sub)
170 common_log(LOG_INFO, "Preparing $sub->N PuSH distribution(s) for $sub->topic");
173 while ($sub->fetch()) {
175 if ($n < self::MAX_UNBATCHED) {
176 $sub->distribute($atom);
178 $batch[] = $sub->callback;
179 if (count($batch) >= self::BATCH_SIZE) {
180 $sub->bulkDistribute($atom, $batch);
185 if (count($batch) >= 0) {
186 $sub->bulkDistribute($atom, $batch);
191 * Build a single-item version of the sending user's Atom feed.
194 function userFeedForNotice()
196 $atom = new AtomUserNoticeFeed($this->user);
197 $atom->addEntryFromNotice($this->notice);
198 $feed = $atom->getString();
203 function groupFeedForNotice($group_id)
205 $group = User_group::staticGet('id', $group_id);
207 $atom = new AtomGroupNoticeFeed($group);
208 $atom->addEntryFromNotice($this->notice);
209 $feed = $atom->getString();