Added enqueue failure detection

If a job fails to be enqueued, it would be useful to know it.  So now
Resque actually tells us whether the enqueue action was successful or
if it failed.  If your job ID comes back as FALSE, it didn't enqueue.

Signed-off-by: Daniel Hunsaker <[email protected]>

Author: danhunsaker

lib/Resque.php

@@ -98,7 +98,11 @@ public static function fork()
 	public static function push($queue, $item)
 	{
 		self::redis()->sadd('queues', $queue);
-		self::redis()->rpush('queue:' . $queue, json_encode($item));
+		if (self::redis()->rpush('queue:' . $queue, json_encode($item)) < 1)
+		{
+			return FALSE;
+		}
+		return TRUE;
 	}
 
 	/**

lib/Resque/Job.php

@@ -58,11 +58,14 @@ public static function create($queue, $class, $args = null, $monitor = false)
 			);
 		}
 		$id = md5(uniqid('', true));
-		Resque::push($queue, array(
+		if ( ! Resque::push($queue, array(
 			'class'	=> $class,
 			'args'	=> array($args),
 			'id'	=> $id,
-		));
+		)))
+		{
+			return FALSE;
+		}
 
 		if($monitor) {
 			Resque_Job_Status::create($id);