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

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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.
*/
function releaseCLaim()
function releaseClaim()
{
// DB_DataObject doesn't let us save nulls right now
$sql = sprintf("UPDATE queue_item SET claimed=NULL WHERE id=%d", $this->id);

41
lib/dbqueuemanager.php
View File

@ -73,54 +73,57 @@ class DBQueueManager extends QueueManager
{
//$this->_log(LOG_DEBUG, 'Checking for notices...');
$qi = Queue_item::top($this->activeQueues());
if (empty($qi)) {
if (!$qi instanceof Queue_item) {
//$this->_log(LOG_DEBUG, 'No notices waiting; idling.');
return false;
}
$queue = $qi->transport;
try {
$item = $this->decode($qi->frame);
} catch (Exception $e) {
$this->_log(LOG_INFO, "[$queue] Discarding: ".$e->getMessage());
$this->_log(LOG_INFO, "[{$qi->transport}] Discarding: ".$e->getMessage());
$this->_done($qi);
return true;
}
$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->handle($item)) {
$this->_log(LOG_INFO, "[$queue:$rep] Successfully handled item");
$this->_log(LOG_INFO, "[{$qi->transport}:$rep] Successfully handled item");
$this->_done($qi);
} 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);
}
} else {
$this->_log(LOG_INFO, "[$queue:$rep] No handler for queue $queue; discarding.");
$this->_done($qi);
$this->noHandlerFound($qi, $rep);
}
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.
*
* @param QueueItem $qi
*/
protected function _done($qi)
protected function _done(Queue_item $qi)
{
$queue = $qi->transport;
if (empty($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();
$this->stats('handled', $queue);
$this->stats('handled', $qi->transport);
}
/**
@ -129,16 +132,16 @@ class DBQueueManager extends QueueManager
*
* @param QueueItem $qi
*/
protected function _fail($qi)
protected function _fail(Queue_item $qi, $releaseOnly=false)
{
$queue = $qi->transport;
if (empty($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 {
$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;
}
// 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
* the limits setup in __construct are met.