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#!/usr/bin/env php
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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/>.
*/
# Abort if called from a web server
if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
print "This script must be run from the command line\n";
exit();
}
define('INSTALLDIR', dirname(__FILE__));
define('LACONICA', true);
require_once(INSTALLDIR . '/lib/common.php');
# Notices should be broadcast in 30 minutes or less
define('CLAIM_TIMEOUT', 30 * 60);
function qd_log($priority, $msg) {
common_log($level, 'queuedaemon: '.$msg);
}
function qd_top_item() {
$qi = new Queue_item();
$qi->orderBy('created');
$qi->whereAdd('claimed is NULL');
$qi->limit(1);
$cnt = $qi->find(TRUE);
if ($cnt) {
# XXX: potential race condition
# can we force it to only update if claimed is still NULL
# (or old)?
qd_log(LOG_INFO, 'claiming queue item = ' . $qi->notice_id);
$orig = clone($qi);
$qi->claimed = DB_DataObject_Cast::dateTime();
$result = $qi->update($orig);
if ($result) {
qd_log(LOG_INFO, 'claim succeeded.');
return $qi;
} else {
qd_log(LOG_INFO, 'claim failed.');
}
}
$qi = NULL;
return NULL;
}
function qd_clear_old_claims() {
$qi = new Queue_item();
$qi->orderBy('created');
$qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT);
if ($qi->find()) {
while ($qi->fetch()) {
$orig = clone($qi);
$qi->claimed = NULL;
$qi->update($orig);
}
}
}
function qd_is_remote($notice) {
$user = User::staticGet($notice->profile_id);
return !$user;
}
$in_a_row = 0;
do {
qd_log(LOG_INFO, 'checking for queued notices');
$qi = qd_top_item();
if ($qi) {
$in_a_row++;
qd_log(LOG_INFO, 'Got queue item #'.$in_a_row.' enqueued '.common_exact_date($qi->created));
$notice = Notice::staticGet($qi->notice_id);
if ($notice) {
qd_log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
# XXX: what to do if broadcast fails?
common_real_broadcast($notice, qd_is_remote($notice));
qd_log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
$notice = NULL;
} else {
qd_log(LOG_WARNING, 'queue item for notice that does not exist');
}
$qi->delete();
$qi = NULL;
} else {
# qd_clear_old_claims();
# In busy times, sleep less
$sleeptime = 30000000/($in_a_row+1);
qd_log(LOG_INFO, 'sleeping ' . $sleeptime . ' microseconds');
usleep($sleeptime);
$in_a_row = 0;
}
# Clear the DB_DataObject cache so we get fresh data
$GLOBALS['_DB_DATAOBJECT']['CACHE'] = array();
} while (true);
?>
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