如何从C＃客户端获取RabbitMQ队列大小？

Question

I need to set an upper limit on how many messages can be in a queue. So obviously I need to know how many items are in a queue. How do you check the number of messages in a RabbitMQ queue from the c# client without hitting the management API or using QueueDeclarePassive?

Answer 1

Below is a example of the message count function on the IModel object. You do not need to use QueueDeclarePassive or make rest request to the managment plugin. There is a function right there where it should be.

public uint GetMessageCount(string queueName)
{
    using (IConnection connection = factory.CreateConnection())
    using (IModel channel = connection.CreateModel())
    {
        return channel.MessageCount(queueName);
    }
}

For documentation: http://www.rabbitmq.com/releases/rabbitmq-dotnet-client/v3.6.4/rabbitmq-dotnet-client-3.6.4-client-htmldoc/html/type-RabbitMQ.Client.IModel.html#method-M:RabbitMQ.Client.IModel.MessageCount(System.String)