Port fact caching system to rabbitmq

* Purge all references to zmq also
* New setting to control the queue it works on

awx/main/queue.py

@@ -2,7 +2,6 @@
 # All Rights Reserved.
 
 # Python
-import json
 import logging
 import os
 
@@ -12,37 +11,7 @@ from django.conf import settings
 # Kombu
 from kombu import Connection, Exchange, Producer
 
-__all__ = ['FifoQueue', 'CallbackQueueDispatcher']
-
-
-# TODO: Figure out wtf to do with this class
-class FifoQueue(object):
-    """An abstraction class implemented for a simple push/pull queue.
-
-    Intended to allow alteration of backend details in a single, consistent
-    way throughout the Tower application.
-    """
-    def __init__(self, queue_name):
-        """Instantiate a queue object, which is able to interact with a
-        particular queue.
-        """
-        self._queue_name = queue_name
-
-    def __len__(self):
-        """Return the length of the Redis list."""
-        #return redis.llen(self._queue_name)
-        return 0
-        
-    def push(self, value):
-        """Push a value onto the right side of the queue."""
-        #redis.rpush(self._queue_name, json.dumps(value))
-
-    def pop(self):
-        """Retrieve a value from the left side of the queue."""
-        #answer = redis.lpop(self._queue_name)
-        answer = None
-        if answer:
-            return json.loads(answer)
+__all__ = ['CallbackQueueDispatcher']
 
 
 class CallbackQueueDispatcher(object):