python_queue = Queue.Queue()

class GetDataFromSQS(threading.Thread):
   """Threaded Url Grab"""
    def __init__(self, python_queue):
        threading.Thread.__init__(self)
        self.python_queue = python_queue

    def run(self):
        while True:
            time.sleep(0.5) //sleep for a few secs before querying again
            try:
                msgs = sqs_queue.get_messages(10)
                if msgs == None:
                    print"sqs is empty now"!
                for msg in msgs:
                    #place each message block from sqs into python queue for processing
                    self.python_queue.put(msg)
                    print"Adding a new message to Queue. Queue size is now %d" % self.python_queue.qsize()
                    #delete from sqs
                    sqs_queue.delete_message(msg)
            except Exception as e:
                print"Exception in GetDataFromSQS ::" +  e


class ProcessSQSMsgs(threading.Thread):
    def __init__(self, python_queue):
        threading.Thread.__init__(self)
        self.python_queue = python_queue
        self.pool_manager = PoolManager(num_pools=6)

    def run(self):
        while True:
            #grabs the message to be parsed from sqs queue
            python_queue_msg = self.python_queue.get()
            try:
                processMsgAndSendToBackend(python_queue_msg, self.pool_manager)
            except Exception as e:
                print"Error parsing::" + e
            finally:
                self.python_queue.task_done()

def processMsgAndSendToBackend(msg, pool_manager):
    if msg !="":
        ###### All the code related to processing the msg
        for individualValue in processedMsg:
            try:
                response = pool_manager.urlopen('POST', backend_endpoint, body=individualValue)
                if response == None:
                    print"Error"
                else:
                    response.release_conn()
            except Exception as e:
                print"Exception! Post data to backend:" + e


def startMyPython():
    #spawn a pool of threads, and pass them queue instance
    for i in range(3):
        sqsThread = GetDataFromSQS(python_queue)
        sqsThread.start()

    for j in range(5):
        parseThread = ProcessSQSMsgs(python_queue)
        #parseThread.setDaemon(True)
        parseThread.start()

    #wait on the queue until everything has been processed
    python_queue.join()
    # python_queue.close() -- should i do this?

startMyPython()