$this->set_id($id);
}
}
-
+
function class_name()
{
return ucfirst($this->transport()) . 'Handler';
{
return strtolower($this->class_name().'.'.$this->get_id());
}
-
+
function get_id()
{
return $this->_id;
{
$this->_id = $id;
}
-
+
function transport()
{
return null;
}
-
+
function start()
{
}
-
+
function finish()
{
}
{
return true;
}
-
+
function db_dispatch() {
do {
$qi = Queue_item::top($this->transport());
} else {
$this->clear_old_claims();
$this->idle(5);
- }
+ }
} while (true);
}
function stomp_dispatch() {
- require("Stomp.php");
- $con = new Stomp(common_config('queue','stomp_server'));
- if (!$con->connect()) {
- $this->log(LOG_ERR, 'Failed to connect to queue server');
- return false;
- }
- $queue_basename = common_config('queue','queue_basename');
- // subscribe to the relevant queue (format: basename-transport)
- $con->subscribe('/queue/'.$queue_basename.'-'.$this->transport());
+ require("Stomp.php");
+ $con = new Stomp(common_config('queue','stomp_server'));
+ if (!$con->connect()) {
+ $this->log(LOG_ERR, 'Failed to connect to queue server');
+ return false;
+ }
+ $queue_basename = common_config('queue','queue_basename');
+ // subscribe to the relevant queue (format: basename-transport)
+ $con->subscribe('/queue/'.$queue_basename.'-'.$this->transport());
do {
$frame = $con->readFrame();
if ($frame) {
$this->log(LOG_INFO, 'Got item enqueued '.common_exact_date($frame->headers['created']));
- // 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...
+ // 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...
$notice = Notice::staticGet($frame->body);
if ($notice) {
$this->log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
$result = $this->handle_notice($notice);
if ($result) {
- // if the msg has been handled positively, ack it
- // and the queue server will remove it from the queue
- $con->ack($frame);
- $this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
- }
- else {
- // no ack
+ // if the msg has been handled positively, ack it
+ // and the queue server will remove it from the queue
+ $con->ack($frame);
+ $this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
+ }
+ else {
+ // no ack
$this->log(LOG_WARNING, 'Failed broadcast for notice ID = ' . $notice->id);
}
$notice->free();
} else {
$this->log(LOG_WARNING, 'queue item for notice that does not exist');
}
- }
+ }
} while (true);
-
- $con->disconnect();
+
+ $con->disconnect();
}
-
function run()
{
return false;
}
$this->log(LOG_INFO, 'checking for queued notices');
- if (common_config('queue','subsystem') == 'stomp') {
- $this->stomp_dispatch();
- }
- else {
- $this->db_dispatch();
- }
+ if (common_config('queue','subsystem') == 'stomp') {
+ $this->stomp_dispatch();
+ }
+ else {
+ $this->db_dispatch();
+ }
if (!$this->finish()) {
return false;
}
sleep($timeout);
}
}
-
+
function clear_old_claims()
{
$qi = new Queue_item();
$qi->free();
unset($qi);
}
-
+
function log($level, $msg)
{
common_log($level, $this->class_name() . ' ('. $this->get_id() .'): '.$msg);
}
}
-
+