<?php
/**
- * Laconica, the distributed open-source microblogging tool
+ * StatusNet, the distributed open-source microblogging tool
*
* Abstract class for queue managers
*
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category QueueManager
- * @package Laconica
- * @author Evan Prodromou <evan@controlyourself.ca>
- * @author Sarven Capadisli <csarven@controlyourself.ca>
- * @copyright 2009 Control Yourself, Inc.
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @author Sarven Capadisli <csarven@status.net>
+ * @copyright 2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://laconi.ca/
+ * @link http://status.net/
*/
require_once 'Stomp.php';
+class LiberalStomp extends Stomp
+{
+ function getSocket()
+ {
+ return $this->_socket;
+ }
+}
+
class StompQueueManager
{
var $server = null;
var $password = null;
var $base = null;
var $con = null;
- var $frames = array();
function __construct()
{
function _connect()
{
- $this->_log(LOG_DEBUG, "Connecting to $this->server...");
if (empty($this->con)) {
$this->_log(LOG_INFO, "Connecting to '$this->server' as '$this->username'...");
- $this->con = new Stomp($this->server);
+ $this->con = new LiberalStomp($this->server);
if ($this->con->connect($this->username, $this->password)) {
$this->_log(LOG_INFO, "Connected.");
array ('created' => $notice->created));
if (!$result) {
- common_log(LOG_ERR, 'Error sending to '.$transport.' queue');
+ common_log(LOG_ERR, 'Error sending to '.$queue.' queue');
return false;
}
common_log(LOG_DEBUG, 'complete remote queueing notice ID = '
- . $notice->id . ' for ' . $transport);
+ . $notice->id . ' for ' . $queue);
}
- function nextItem($queue, $timeout=null)
+ function service($queue, $handler)
{
$result = null;
$this->_connect();
- $frame = $this->con->readFrame();
+ $this->con->setReadTimeout($handler->timeout());
- if ($frame) {
- $this->log(LOG_INFO, 'Got item enqueued '.common_exact_date($frame->headers['created']));
+ $this->con->subscribe($this->_queueName($queue));
- // XXX: Now the queue handler receives only the ID of the
- // notice, and it has to get it from the DB
- // A massive improvement would be avoid DB query by transmitting
- // all the notice details via queue server...
+ while (true) {
- $notice = Notice::staticGet($frame->body);
+ // Wait for something on one of our sockets
- if ($notice) {
- $this->_saveFrame($notice, $queue, $frame);
- } else {
- $this->log(LOG_WARNING, 'queue item for notice that does not exist');
- }
- }
- }
+ $stompsock = $this->con->getSocket();
- function done($object, $queue)
- {
- $notice = $object;
+ $handsocks = $handler->getSockets();
- $this->_connect();
+ $socks = array_merge(array($stompsock), $handsocks);
- $frame = $this->_getFrame($notice, $queue);
+ $read = $socks;
+ $write = array();
+ $except = array();
- if (empty($frame)) {
- $this->log(LOG_ERR, 'Cannot find frame for notice '.$notice->id.' in queue '.$queue);
- } else {
- // if the msg has been handled positively, ack it
- // and the queue server will remove it from the queue
- $this->con->ack($frame);
- $this->_clearFrame($notice, $queue);
+ $ready = stream_select($read, $write, $except, $handler->timeout(), 0);
- $this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
+ if ($ready === false) {
+ $this->_log(LOG_ERR, "Error selecting on sockets");
+ } else if ($ready > 0) {
+ if (in_array($stompsock, $read)) {
+ $this->_handleNotice($queue, $handler);
+ }
+ $handler->idle(QUEUE_HANDLER_HIT_IDLE);
+ }
}
- }
-
- function fail($object, $queue)
- {
- $notice = $object;
- // STOMP server will requeue it after a while anyways,
- // so no need to notify. Just get it out of our little
- // array
-
- $this->_clearFrame($notice, $queue);
+ $this->con->unsubscribe($this->_queueName($queue));
}
- function _frameKey($notice, $queue)
+ function _handleNotice($queue, $handler)
{
- return ((string)$notice->id) . '-' . $queue;
- }
+ $frame = $this->con->readFrame();
- function _saveFrame($notice, $queue, $frame)
- {
- $k = $this->_frameKey($notice, $queue);
- $this->_frames[$k] = $frame;
- return true;
- }
+ if (!empty($frame)) {
+ $notice = Notice::staticGet('id', $frame->body);
- function _getFrame($notice, $queue)
- {
- $k = $this->_frameKey($notice, $queue);
- return $this->_frames[$k];
+ if (empty($notice)) {
+ $this->_log(LOG_WARNING, 'Got ID '. $frame->body .' for non-existent notice in queue '. $queue);
+ $this->con->ack($frame);
+ } else {
+ if ($handler->handle_notice($notice)) {
+ $this->_log(LOG_INFO, 'Successfully handled notice '. $notice->id .' posted at ' . $frame->headers['created'] . ' in queue '. $queue);
+ $this->con->ack($frame);
+ } else {
+ $this->_log(LOG_WARNING, 'Failed handling notice '. $notice->id .' posted at ' . $frame->headers['created'] . ' in queue '. $queue);
+ // FIXME we probably shouldn't have to do
+ // this kind of queue management ourselves
+ $this->con->ack($frame);
+ $this->enqueue($notice, $queue);
+ }
+ unset($notice);
+ }
+
+ unset($frame);
+ }
}
- function _clearFrame($notice, $queue)
+ function _queueName($queue)
{
- $k = $this->_frameKey($notice, $queue);
- unset($this->_frames[$k]);
+ return common_config('queue', 'queue_basename') . $queue;
}
function _log($level, $msg)
projects / quix0rs-gnu-social.git / blobdiff