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<?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/>.
*/
/**
* Send a PuSH subscription verification from our internal hub.
* Queue up final distribution for
* @package Hub
* @author Brion Vibber <brion@status.net>
*/
class HubDistribQueueHandler extends QueueHandler
{
function transport()
{
return 'hubdistrib';
}
function handle($notice)
{
assert($notice instanceof Notice);
$this->pushUser($notice);
foreach ($notice->getGroups() as $group) {
$this->pushGroup($notice, $group->group_id);
}
}
function pushUser($notice)
{
// See if there's any PuSH subscriptions, including OStatus clients.
// @fixme handle group subscriptions as well
// http://identi.ca/api/statuses/user_timeline/1.atom
$feed = common_local_url('ApiTimelineUser',
array('id' => $notice->profile_id,
'format' => 'atom'));
$sub = new HubSub();
$sub->topic = $feed;
if ($sub->find()) {
$atom = $this->userFeedForNotice($notice);
$this->pushFeeds($atom, $sub);
} else {
common_log(LOG_INFO, "No PuSH subscribers for $feed");
}
return true;
}
function pushGroup($notice, $group_id)
{
$feed = common_local_url('ApiTimelineGroup',
array('id' => $group_id,
'format' => 'atom'));
$sub = new HubSub();
$sub->topic = $feed;
if ($sub->find()) {
common_log(LOG_INFO, "Building PuSH feed for $feed");
$atom = $this->groupFeedForNotice($group_id, $notice);
$this->pushFeeds($atom, $sub);
} else {
common_log(LOG_INFO, "No PuSH subscribers for $feed");
}
}
function pushFeeds($atom, $sub)
{
common_log(LOG_INFO, "Preparing $sub->N PuSH distribution(s) for $sub->topic");
$qm = QueueManager::get();
while ($sub->fetch()) {
common_log(LOG_INFO, "Prepping PuSH distribution to $sub->callback for $sub->topic");
$data = array('sub' => clone($sub),
'atom' => $atom);
$qm->enqueue($data, 'hubout');
}
}
/**
* Build a single-item version of the sending user's Atom feed.
* @param Notice $notice
* @return string
*/
function userFeedForNotice($notice)
{
// @fixme this feels VERY hacky...
// should probably be a cleaner way to do it
ob_start();
$api = new ApiTimelineUserAction();
$api->prepare(array('id' => $notice->profile_id,
'format' => 'atom',
'max_id' => $notice->id,
'since_id' => $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, $notice)
{
// @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' => $notice->id,
'since_id' => $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;
}
}
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