如何检查node.js amqp客户端中是否已存在队列？

Question

我有以下情况。我想使用amqp客户端实现rabbitmq的pub / sub模型。我有订阅者订阅特定ID。我想在那个id的名字上形成一个队列。因此，想要订阅该特定id的所有订阅者都应该订阅该特定队列。所以我想基于具有该id的所有订户的特定id形成唯一队列。但在我的情况下，它正在为相同的id形成不同的队列（我猜）。结果，特定id的订户能够以循环方式接收所有消息，尽管所有订户都接收所有消息。以下是我正在使用的代码。

var express = require('express');
var amqp = require('amqp');
var app = express();
var httpServer = require('http').createServer();
var socketio = require('socket.io');
var io = socketio.listen(httpServer);
httpServer.listen(8000);

console.log("server started at port no 8000");

var rabbitConnection = amqp.createConnection({host:"localhost", port:"5672"});
var chatExchange;
rabbitConnection.on("ready", function()
{
	console.log("RabbitConnection got ready");
	chatExchange = rabbitConnection.exchange("chatExchange", {"type":"topic"});
	//console.log("value of chatExchange is :",chatExchange);
});

io.sockets.on("connection", function(socket)
{
	console.log("socket connected");
	socket.on("metaData", function(data)
	{
		if(data.type=="publisher")
		{
			console.log("publisher connected");
			socket.type="publisher";
		}
		else if(data.type=="subscriber")
		{
			console.log("subscriber connected");
			socket.type="subscriber";
			rabbitConnection.queue(""+data.channelName, function(queue)  //MAIN PROBLEM LIES IN ABOVE LINE I GUESS. IT WILL FORM QUEUE FOR EVERY SOCKET CONNECTION. BUT IT SHOULD NOT FORM QUEUE IF IT ALREADY EXISTS.
			{
				console.log("queue formed");
				console.log("queue is ", queue);
				queue.bind("chatExchange",""+data.channelName);
				queue.subscribe(function(message)
				{
					console.log("message is "+message.data.toString());
					console.log("message emitted");
					socket.emit("message",{"text":message.data.toString()});
				});
			});
		}
	}); 
	socket.on("disconnect",function()
	{	
		console.log("socket disconnected");
	});
	socket.on("message", function(data)
	{
		chatExchange.publish(""+data.channelName, data.text);
		console.log("message came");
	});
})

我见过node-amqp模块的文档。但我没有找到任何选择来破坏队列的存在。那里有一些“持久性”选择。但我不认为它会起作用。请帮忙.... 提前谢谢..