128 lines
3.4 KiB
PHP
Executable File
128 lines
3.4 KiB
PHP
Executable File
#!/usr/bin/env php
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<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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# Abort if called from a web server
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if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
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print "This script must be run from the command line\n";
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exit();
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}
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define('INSTALLDIR', dirname(__FILE__));
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define('LACONICA', true);
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require_once(INSTALLDIR . '/lib/common.php');
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# Notices should be broadcast in 30 minutes or less
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define('CLAIM_TIMEOUT', 30 * 60);
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function qd_log($priority, $msg) {
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common_log($level, 'queuedaemon: '.$msg);
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}
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function qd_top_item() {
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$qi = new Queue_item();
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$qi->orderBy('created');
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$qi->whereAdd('claimed is NULL');
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$qi->limit(1);
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$cnt = $qi->find(TRUE);
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if ($cnt) {
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# XXX: potential race condition
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# can we force it to only update if claimed is still NULL
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# (or old)?
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qd_log(LOG_INFO, 'claiming queue item = ' . $qi->notice_id);
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$orig = clone($qi);
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$qi->claimed = DB_DataObject_Cast::dateTime();
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$result = $qi->update($orig);
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if ($result) {
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qd_log(LOG_INFO, 'claim succeeded.');
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return $qi;
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} else {
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qd_log(LOG_INFO, 'claim failed.');
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}
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}
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$qi = NULL;
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return NULL;
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}
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function qd_clear_old_claims() {
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$qi = new Queue_item();
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$qi->orderBy('created');
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$qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT);
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if ($qi->find()) {
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while ($qi->fetch()) {
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$orig = clone($qi);
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$qi->claimed = NULL;
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$qi->update($orig);
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}
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}
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}
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function qd_is_remote($notice) {
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$user = User::staticGet($notice->profile_id);
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return !$user;
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}
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$in_a_row = 0;
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do {
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qd_log(LOG_INFO, 'checking for queued notices');
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$qi = qd_top_item();
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if ($qi) {
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$in_a_row++;
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qd_log(LOG_INFO, 'Got queue item #'.$in_a_row.' enqueued '.common_exact_date($qi->created));
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$notice = Notice::staticGet($qi->notice_id);
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if ($notice) {
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qd_log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
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# XXX: what to do if broadcast fails?
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$result = common_real_broadcast($notice, qd_is_remote($notice));
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if (!$result) {
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qd_log(LOG_WARNING, 'Failed broadcast for notice ID = ' . $notice->id);
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$orig = $qi;
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$qi->claimed = NULL;
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$qi->update($orig);
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qd_log(LOG_WARNING, 'Abandoned claim for notice ID = ' . $notice->id);
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continue;
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}
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qd_log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
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$notice = NULL;
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} else {
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qd_log(LOG_WARNING, 'queue item for notice that does not exist');
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}
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$qi->delete();
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$qi = NULL;
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} else {
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qd_clear_old_claims();
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# In busy times, sleep less
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$sleeptime = 30000000/($in_a_row+1);
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qd_log(LOG_INFO, 'sleeping ' . $sleeptime . ' microseconds');
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usleep($sleeptime);
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$in_a_row = 0;
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}
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# Clear the DB_DataObject cache so we get fresh data
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$GLOBALS['_DB_DATAOBJECT']['CACHE'] = array();
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} while (true);
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?>
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