Question

在一个非常简单的控制台应用程序中使用RabbitMQ我遇到了一个问题，即控制台应用程序在执行结束时没有退出，而我认为可能是因为我和＃39; m挂在RabbitMQ的东西上。那么究竟需要处理什么呢？我有一个类Queue类看起来像这样：

public class ManagementQueue : IDisposable
{
    private IConnection connection;
    private IModel channel;
    private string privateQueueName;
    private EventingBasicConsumer consumer;

    public event EventHandler SomeEvents;     

    public ManagementQueue()
    {
        var factory = new ConnectionFactory() 
        { 
            HostName = Properties.Settings.Default.RabbitMQServer,
            UserName = Properties.Settings.Default.RabbitMQUser,
            Password = Properties.Settings.Default.RabbitMQPassword
        };
        connection = factory.CreateConnection();
        channel = connection.CreateModel();

        privateQueueName = channel.QueueDeclare().QueueName;        

        channel.QueueDeclare(queue: Properties.Settings.Default.ManagementQueueName,
            durable: true,
            exclusive: false,
            autoDelete: false,
            arguments: null);

      channel.ExchangeDeclare(Properties.Settings.Default.BroadcastExchange, "fanout");       
        channel.ExchangeDeclare(Properties.Settings.Default.DirectExchange, "direct");          

        channel.QueueBind(privateQueueName,
            Properties.Settings.Default.DirectExchange,
            privateQueueName);

        channel.QueueBind(Properties.Settings.Default.ManagementQueueName,
            Properties.Settings.Default.DirectExchange,
            "fromManager");

        channel.BasicQos(0, 1, false);
    }

    public void StartListening()
    {
        consumer = new EventingBasicConsumer(channel);
        consumer.Received += ReceivedHandler;

        channel.BasicConsume(queue: privateQueueName, 
            noAck: true, 
            consumer: consumer);
    }

    public void StopListening()
    {
        consumer.Received -= ReceivedHandler;
    }

    private void ReceivedHandler(object model, BasicDeliverEventArgs ea)
    {
        // Do some stuff...
    }

    public void SomeFunction()
    {
        // send out some message...
        var props = channel.CreateBasicProperties();
        props.ReplyTo = privateQueueName;

        channel.BasicPublish(exchange: Properties.Settings.Default.BroadcastExchange,
                 routingKey: "",
                 basicProperties: props,
                 body: null);
    }

    public void Dispose()
    {
        if (channel != null)
        {
            channel.Dispose();
            channel = null;
        }
        if (connection != null)
        {
            connection.Dispose();
            connection = null;
        }
    }
}

在控制台中我有类似的东西：

static void Main(string[] args)
{
   if (!args.Any())
   {
       // This works fine exiting here
       return;
   }
   var queue = new ManagementQueue();
   queue.SomeEvents += (o,e) => { // do something };
   queue.StartListening();
   queue.SomeFunction();

   while (!somecondition)
   {
       // do some other stuff
   }
   queue.StopListening();
   queue.Dispose();
   return;    // app should quit here, but doesn't???
}

我怀疑这可能与消费者有关，但似乎没有任何方法可以处理，关闭或断开它。不知道我在哪里显式创建任何新线程或任何紧密循环（除了while循环之外，但在条件计算结果为false时会退出）。

Answer 1

这是一篇非常古老的帖子，但看起来RabbitMQ在调用IModel上的Dispose时遇到了问题。您可能只想尝试处理连接并查看是否可以解决问题。

参考1：http://markmail.org/message/tqyiezrmixagtwa4#query:+page:1+mid:mhl5iw2gylwznd5o+state:results

参考2：http://rabbitmq.1065348.n5.nabble.com/IModel-Dispose-locks-if-called-during-ConnectionShutdown-event-tc22104.html

建议修复：

建议不要在IModel实例上调用dispose ConnectionShutdown事件。我不得不重新编写代码来跟踪它是否存在在连接中调用或不知道何时调用dispose。

清理队列和连接 - 控制台应用程序在退出

1 个答案: