在Windows服务中触发日志事件

Question

我正在构建Windows服务，我的目标是当队列中显示消息时，它将侦听RabbitMQ队列并向Windows事件日志写出日志。我试图弄清楚如何触发服务并在RabbitMQ队列中看到消息时立即写日志。这是我的Windows服务代码：

using RabbitMQ.Client;
using RabbitMQ.Client.Events;
using System.Diagnostics;
using System.ServiceProcess;
using System.Text;

namespace RabbitMQService
{
    public partial class RabbitMQService : ServiceBase
        {
            private int eventId = 1;

            public RabbitMQService()
            {
                InitializeComponent();

                eventLog1 = new System.Diagnostics.EventLog();
                if (!System.Diagnostics.EventLog.SourceExists("MySource"))
                {
                    System.Diagnostics.EventLog.CreateEventSource(
                        "MySource", "MyNewLog");
                }

                eventLog1.Source = "MySource";
                eventLog1.Log = "MyNewLog";
            }

            protected override void OnStart(string[] args)
            {
                eventLog1.WriteEntry("In OnStart");
                System.Timers.Timer timer = new System.Timers.Timer();
                timer.Interval = 60000; // 60 seconds
                timer.Elapsed += new System.Timers.ElapsedEventHandler(this.OnTimer);
                timer.Start();            
            }

            public void OnTimer(object sender, System.Timers.ElapsedEventArgs args)
            {
                GetMessage();
                eventLog1.WriteEntry("Monitoring the System", EventLogEntryType.Information, eventId++);
            }

            public void GetMessage()
            {
                var factory = new ConnectionFactory() { HostName = "localhost" };
                using (var connection = factory.CreateConnection())
                using (var channel = connection.CreateModel())
                {
                    channel.QueueDeclare(queue: "hello",
                                         durable: false,
                                         exclusive: false,
                                         autoDelete: false,
                                         arguments: null);

                    var consumer = new EventingBasicConsumer(channel);
                    consumer.Received += (model, ea) =>
                    {
                        var body = ea.Body;
                        var message = Encoding.UTF8.GetString(body);
                        eventLog1.WriteEntry("Message Received: " + message);
                    };                
                    channel.BasicConsume(queue: "hello",
                                         autoAck: true,
                                         consumer: consumer);
                    eventLog1.WriteEntry("Starting to listen for messages from the queue");
                }
            }
            protected override void OnStop()
            {
                eventLog1.WriteEntry("In OnStop.");
            }

            protected override void OnContinue()
            {
                eventLog1.WriteEntry("In OnContinue.");
            }
        }
    }

现在，仅当timer方法每60秒触发一次时，它才将消息写入日志。当我将该实验构建为控制台应用程序时，客户端发送消息后，一旦消息到达队列，它将立即显示消息。仅供参考，这是发送消息的客户端控制台应用程序：

using System;
using System.Text;
using RabbitMQ.Client;

namespace Send
{
    class Send
    {
        static void Main(string[] args)
        {
            var factory = new ConnectionFactory() { HostName = "xxx.xxx.xxx.xxx", UserName = "xxx", Password = "xxx" };
            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    channel.QueueDeclare(queue: "hello",
                                 durable: false,
                                 exclusive: false,
                                 autoDelete: false,
                                 arguments: null);

                    string message = "Hello World!";
                    var body = Encoding.UTF8.GetBytes(message);

                    channel.BasicPublish(exchange: "",
                                         routingKey: "hello",
                                         basicProperties: null,
                                         body: body);
                    Console.WriteLine(" [x] Sent {0}", message);

                }

                Console.WriteLine(" Press [enter] to exit.");
                Console.ReadLine();
            }
        }
    }
}

我上面提到的接收控制台应用程序与我构建的Windows服务的GetMessage（）方法中的代码完全一样。