diff options
Diffstat (limited to 'lib/queuehandler.php')
| -rw-r--r-- | lib/queuehandler.php | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/queuehandler.php b/lib/queuehandler.php new file mode 100644 index 000000000..f12b880b1 --- /dev/null +++ b/lib/queuehandler.php @@ -0,0 +1,105 @@ +<?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/>. + */ + +define('CLAIM_TIMEOUT', 1200); + +class QueueHandler { + + var $_id = 'generic'; + + function QueueHandler($id=NULL) { + if ($id) { + $this->set_id($id); + } + } + + function class_name() { + return ucfirst($this->transport()) . 'Handler'; + } + + function get_id() { + return $this->_id; + } + + function set_id($id) { + $this->_id = $id; + } + + function transport() { + return NULL; + } + + function start() { + } + + function finish() { + } + + function handle_notice($notice) { + return true; + } + + function handle_queue() { + $this->clear_old_claims(); + $this->log(LOG_INFO, 'checking for queued notices'); + $cnt = 0; + $transport = $this->transport(); + do { + $qi = Queue_item::top($transport); + if ($qi) { + $this->log(LOG_INFO, 'Got item enqueued '.common_exact_date($qi->created)); + $notice = Notice::staticGet($qi->notice_id); + if ($notice) { + $this->log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id); + # XXX: what to do if broadcast fails? + $result = $this->handle_notice($notice); + if (!$result) { + $this->log(LOG_WARNING, 'Failed broadcast for notice ID = ' . $notice->id); + $orig = $qi; + $qi->claimed = NULL; + $qi->update($orig); + $this->log(LOG_WARNING, 'Abandoned claim for notice ID = ' . $notice->id); + continue; + } + $this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id); + $notice = NULL; + } else { + $this->log(LOG_WARNING, 'queue item for notice that does not exist'); + } + $qi->delete(); + $cnt++; + } else { + $this->clear_old_claims(); + sleep(10); + } + } while (true); + } + + function clear_old_claims() { + $qi = new Queue_item(); + $qi->transport = $this->transport(); + $qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT); + $qi->update(DB_DATAOBJECT_WHEREADD_ONLY); + } + + function log($level, $msg) { + common_log($level, $this->class_name() . ' ('. $this->get_id() .'): '.$msg); + } +} +
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