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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, 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/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
/**
* Base class for queue handlers.
*
* As extensions of the Daemon class, each queue handler has the ability
* to launch itself in the background, at which point it'll pass control
* to the configured QueueManager class to poll for updates.
*
* Subclasses must override at least the following methods:
* - transport
* - handle_notice
*/
class DistribQueueHandler
{
/**
* Return transport keyword which identifies items this queue handler
* services; must be defined for all subclasses.
*
* Must be 8 characters or less to fit in the queue_item database.
* ex "email", "jabber", "sms", "irc", ...
*
* @return string
*/
function transport()
{
return 'distrib';
}
/**
* Handle distribution of a notice after we've saved it:
* @li add to local recipient inboxes
* @li send email notifications to local @-reply targets
* @li run final EndNoticeSave plugin events
* @li put any remaining post-processing into the queues
*
* If this function indicates failure, a warning will be logged
* and the item is placed back in the queue to be re-run.
*
* @fixme addToInboxes is known to fail sometimes with large recipient sets
*
* @param Notice $notice
* @return boolean true on success, false on failure
*/
function handle($notice)
{
try {
$notice->addToInboxes();
} catch (Exception $e) {
$this->logit($notice, $e);
}
try {
$notice->sendReplyNotifications();
} catch (Exception $e) {
$this->logit($notice, $e);
}
try {
Event::handle('EndNoticeDistribute', array($notice));
} catch (Exception $e) {
$this->logit($notice, $e);
}
try {
Event::handle('EndNoticeSave', array($notice));
} catch (Exception $e) {
$this->logit($notice, $e);
}
try {
// Enqueue for other handlers
common_enqueue_notice($notice);
} catch (Exception $e) {
$this->logit($notice, $e);
}
return true;
}
protected function logit($notice, $e)
{
common_log(LOG_ERR, "Distrib queue exception saving notice $notice->id: " .
$e->getMessage() . ' ' .
str_replace("\n", " ", $e->getTraceAsString()));
// We'll still return true so we don't get stuck in a loop
// trying to run a bad insert over and over...
}
}
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