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OpportunisticQM shouldn't try to handle what it can't find

This commit is contained in:
Mikael Nordfeldth 2015-04-09 12:15:34 +02:00
parent 07d92acfd0
commit 0bd16b521c
3 changed files with 30 additions and 20 deletions
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2
classes/Queue_item.php
View File

@ -82,7 +82,7 @@ class Queue_item extends Managed_DataObject
/** /**
* Release a claimed item. * Release a claimed item.
*/ */
function releaseCLaim() function releaseClaim()
{ {
// DB_DataObject doesn't let us save nulls right now // DB_DataObject doesn't let us save nulls right now
$sql = sprintf("UPDATE queue_item SET claimed=NULL WHERE id=%d", $this->id); $sql = sprintf("UPDATE queue_item SET claimed=NULL WHERE id=%d", $this->id);

41
lib/dbqueuemanager.php
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@ -73,54 +73,57 @@ class DBQueueManager extends QueueManager
{ {
//$this->_log(LOG_DEBUG, 'Checking for notices...'); //$this->_log(LOG_DEBUG, 'Checking for notices...');
$qi = Queue_item::top($this->activeQueues()); $qi = Queue_item::top($this->activeQueues());
if (empty($qi)) { if (!$qi instanceof Queue_item) {
//$this->_log(LOG_DEBUG, 'No notices waiting; idling.'); //$this->_log(LOG_DEBUG, 'No notices waiting; idling.');
return false; return false;
} }
$queue = $qi->transport;
try { try {
$item = $this->decode($qi->frame); $item = $this->decode($qi->frame);
} catch (Exception $e) { } catch (Exception $e) {
$this->_log(LOG_INFO, "[$queue] Discarding: ".$e->getMessage()); $this->_log(LOG_INFO, "[{$qi->transport}] Discarding: ".$e->getMessage());
$this->_done($qi); $this->_done($qi);
return true; return true;
} }
$rep = $this->logrep($item); $rep = $this->logrep($item);
$this->_log(LOG_DEBUG, "Got $rep for transport $queue"); $this->_log(LOG_DEBUG, "Got {$rep} for transport {$qi->transport}");
$handler = $this->getHandler($queue); $handler = $this->getHandler($qi->transport);
if ($handler) { if ($handler) {
if ($handler->handle($item)) { if ($handler->handle($item)) {
$this->_log(LOG_INFO, "[$queue:$rep] Successfully handled item"); $this->_log(LOG_INFO, "[{$qi->transport}:$rep] Successfully handled item");
$this->_done($qi); $this->_done($qi);
} else { } else {
$this->_log(LOG_INFO, "[$queue:$rep] Failed to handle item"); $this->_log(LOG_INFO, "[{$qi->transport}:$rep] Failed to handle item");
$this->_fail($qi); $this->_fail($qi);
} }
} else { } else {
$this->_log(LOG_INFO, "[$queue:$rep] No handler for queue $queue; discarding."); $this->noHandlerFound($qi, $rep);
$this->_done($qi);
} }
return true; return true;
} }
// What to do if no handler was found. For example, the OpportunisticQM
// should avoid deleting items just because it can't reach XMPP queues etc.
protected function noHandlerFound(Queue_item $qi, $rep=null) {
$this->_log(LOG_INFO, "[{$qi->transport}:{$rep}] No handler for queue {$qi->transport}; discarding.");
$this->_done($qi);
}
/** /**
* Delete our claimed item from the queue after successful processing. * Delete our claimed item from the queue after successful processing.
* *
* @param QueueItem $qi * @param QueueItem $qi
*/ */
protected function _done($qi) protected function _done(Queue_item $qi)
{ {
$queue = $qi->transport;
if (empty($qi->claimed)) { if (empty($qi->claimed)) {
$this->_log(LOG_WARNING, "Reluctantly releasing unclaimed queue item $qi->id from $qi->queue"); $this->_log(LOG_WARNING, "Reluctantly releasing unclaimed queue item {$qi->id} from {$qi->transport}");
} }
$qi->delete(); $qi->delete();
$this->stats('handled', $queue); $this->stats('handled', $qi->transport);
} }
/** /**
@ -129,16 +132,16 @@ class DBQueueManager extends QueueManager
* *
* @param QueueItem $qi * @param QueueItem $qi
*/ */
protected function _fail($qi) protected function _fail(Queue_item $qi, $releaseOnly=false)
{ {
$queue = $qi->transport;
if (empty($qi->claimed)) { if (empty($qi->claimed)) {
$this->_log(LOG_WARNING, "[$queue:item $qi->id] Ignoring failure for unclaimed queue item"); $this->_log(LOG_WARNING, "[{$qi->transport}:item {$qi->id}] Ignoring failure for unclaimed queue item");
} else { } else {
$qi->releaseClaim(); $qi->releaseClaim();
} }
$this->stats('error', $queue); if (!$releaseOnly) {
$this->stats('error', $qi->transport);
}
} }
} }

7
plugins/OpportunisticQM/lib/opportunisticqueuemanager.php
View File

@ -80,6 +80,13 @@ class OpportunisticQueueManager extends DBQueueManager
return true; return true;
} }
// OpportunisticQM shouldn't discard items it can't handle, we're
// only here to take care of what we _can_ handle!
protected function noHandlerFound(Queue_item $qi, $rep=null) {
$this->_log(LOG_WARNING, "[{$qi->transport}:item {$qi->id}] Releasing claim for queue item without a handler");
$this->_fail($qi, true); // true here means "releaseOnly", so no error statistics since it's not an _error_
}
/** /**
* Takes care of running through the queue items, returning when * Takes care of running through the queue items, returning when
* the limits setup in __construct are met. * the limits setup in __construct are met.