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authorEvan Prodromou <evan@prodromou.name>2008-08-27 16:54:07 -0400
committerEvan Prodromou <evan@prodromou.name>2008-08-27 16:54:07 -0400
commitb9f0ea6f0e16f2314a2bdd56365205e7a3c31aa1 (patch)
treea4739cd2c39c4736a5789a80b47ab0cf174d2be3 /classes
parentadeb19f1f7a82b17cee85ade1ac06fcd48e0d4cb (diff)
break up monolithic xmppdaemon into multiple queue handlers
Eventually, the poor xmppdaemon has become overloaded with extra tasks. So, I've broken it up. Now, we have 5 background scripts, and more coming: * xmppdaemon.php - handles incoming XMPP messages only. * xmppqueuehandler.php - sends notices from the queue out through XMPP. * smsqueuehandler.php - sends notices from the queue out over SMS * ombqueuehandler.php - sends notices from the queue out over OMB * xmppconfirmhandler.php - sends confirmation requests out over XMPP. This is in addition to maildaemon.php, which takes incoming messages. None of these are "true" daemons -- they don't daemonize themselves automatically. Use nohup or another tool to background them. monit can also be useful to keep them running. At some point, these might become fork()'ing daemons, able to handle more than one notice at a time. For now, I'm just running multiple instances, hoping they don't interfere. darcs-hash:20080827205407-84dde-97884a12f5f4e54c93bc785bd280683d1ee7e749.gz
Diffstat (limited to 'classes')
-rw-r--r--classes/Queue_item.php30
1 files changed, 30 insertions, 0 deletions
diff --git a/classes/Queue_item.php b/classes/Queue_item.php
index a953e141b..2ae78d9f6 100644
--- a/classes/Queue_item.php
+++ b/classes/Queue_item.php
@@ -22,4 +22,34 @@ class Queue_item extends DB_DataObject
###END_AUTOCODE
function sequenceKey() { return array(false, false); }
+
+ static function top($transport) {
+
+ $qi = new Queue_item();
+ $qi->transport = $transport;
+ $qi->orderBy('created');
+ $qi->whereAdd('claimed is NULL');
+
+ $qi->limit(1);
+
+ $cnt = $qi->find(TRUE);
+
+ if ($cnt) {
+ # XXX: potential race condition
+ # can we force it to only update if claimed is still NULL
+ # (or old)?
+ $this->log(LOG_INFO, 'claiming queue item = ' . $qi->notice_id);
+ $orig = clone($qi);
+ $qi->claimed = common_sql_now();
+ $result = $qi->update($orig);
+ if ($result) {
+ $this->log(LOG_INFO, 'claim succeeded.');
+ return $qi;
+ } else {
+ $this->log(LOG_INFO, 'claim failed.');
+ }
+ }
+ $qi = NULL;
+ return NULL;
+ }
}