MassTransit RabbitMq调度消息未发送给消费者

问题描述 投票：0回答：2

我想使用MassTransit + RabbitMq总线来调度来自总线的消息。我编写了两个C＃控制台应用程序，一个用于消息创建者，另一个用于向调度程序发送消息，另一个用于消息使用者。

以下代码用于在总线中进行调度，以便每秒向调度程序发送一条消息，然后调度程序以10秒的延迟发送给消费者。我的问题是在RabbitMq客户端中没有消息发送给消费者或消费者队列。我的错误在哪里？

注意：UseInMemoryScheduler工作正常，但UseMessageScheduler不起作用。

公交车邮件创建者

class Program
{
    public static void Main(string[] args)
    {
        MainAsync(args).GetAwaiter().GetResult();

        Console.ReadKey();
    }

    static async Task MainAsync(string[] args)
    {
        var busControl = Bus.Factory.CreateUsingRabbitMq(rabbit =>
        {
            var host = rabbit.Host(new Uri("rabbitmq://localhost:5672"), settings =>
            {
                settings.Username("guest");
                settings.Password("guest");
            });

            //rabbit.UseInMemoryScheduler(); // This works
            rabbit.UseMessageScheduler(new Uri("rabbitmq://localhost/quartz"));// This doesn't work,
        });

        busControl.Start();

        var sendEndpoint = await busControl.GetSendEndpoint(new Uri("rabbitmq://localhost/quartz"));

        for (int i = 0; i < 1000000; i++)
        {
            await sendEndpoint.ScheduleSend(new Uri("rabbitmq://localhost/publisher"), 
                DateTime.Now.AddSeconds(10), 
                new MessageCreated()
                {
                    Text = $"message {i}"
                });

            Thread.Sleep(1000);
        }

        Console.ReadKey();

        busControl.Stop();
    }
}

消息消费者。

class Program
{
    static void Main(string[] args)
    {
        var busControl = Bus.Factory.CreateUsingRabbitMq(rabbit =>
        {
            var host = rabbit.Host(new Uri("rabbitmq://localhost:5672"), settings =>
            {
                settings.Password("guest");
                settings.Username("guest");
            });

            rabbit.ReceiveEndpoint(host, "publisher", conf =>
            {
                conf.Consumer<Consumer>();
            });
        });

        busControl.Start();
        Console.ReadKey();
        busControl.Stop();
    }
}

public class Consumer : IConsumer<MessageCreated>
{
    public Task Consume(ConsumeContext<MessageCreated> context)
    {
        MessageCreated message = context.Message;
        Console.WriteLine(message.Text);

        context.Publish(new MessagePublished
        {
            Text = message.Text,
        });

        return Task.FromResult(context.Message);
    }
}

更新基于@maldworth答案，我更改了以下代码。但问题没有解决。

class Program
{
    public static void Main(string[] args)
    {
        MainAsync(args).GetAwaiter().GetResult();

        Console.ReadKey();
    }

    private static async Task<IScheduler> CreateSchedulerAsync()
    {
        var schedulerFactory = new StdSchedulerFactory();

        var scheduler = await schedulerFactory.GetScheduler();

        return scheduler;
    }

    static async Task MainAsync(string[] args)
    {
        var busControl = Bus.Factory.CreateUsingRabbitMq(async cfg =>
        {
            var host = cfg.Host(new Uri("rabbitmq://localhost:5672"), settings =>
            {
                settings.Password("guest");
                settings.Username("guest");
            });

            var scheduler = await CreateSchedulerAsync();

            cfg.ReceiveEndpoint("quartz", e =>
            {
                cfg.UseMessageScheduler(e.InputAddress);

                e.Consumer(() => new ScheduleMessageConsumer(scheduler));
                e.Consumer(() => new CancelScheduledMessageConsumer(scheduler));
            });

            cfg.ReceiveEndpoint(host, "publisher", conf =>
            {
                conf.Consumer<PublisherConsumer>();
            });

            cfg.ReceiveEndpoint(host, "subscriber", conf =>
            {
                conf.Consumer<SubscriberConsumer>();
            });
        });

        busControl.Start();

        for (int i = 0; i < 1000000; i++)
        {
            var text = $"message {i}";

            Console.WriteLine($"Schedule: {text}");

            await busControl.ScheduleSend(new Uri("rabbitmq://localhost/publisher"),
                DateTime.Now.AddSeconds(30),
                new ScheduleMessage()
                {
                    Text = text
                });

            Thread.Sleep(10000);
        }

        Console.ReadKey();

        busControl.Stop();
    }
}

public class PublisherConsumer : IConsumer<ScheduleMessage>
{
    public Task Consume(ConsumeContext<ScheduleMessage> context)
    {
        Console.WriteLine($"In Publisher: {context.Message.Text}");

        context.Publish(new PublishMessage
        {
            Text = context.Message.Text,
        });

        return Task.FromResult(context.Message);
    }
}

public class SubscriberConsumer : IConsumer<PublishMessage>
{
    public Task Consume(ConsumeContext<PublishMessage> context)
    {
        Console.WriteLine($"In Subscriber: {context.Message.Text}");

        return Task.FromResult(context.Message);
    }
}

而App.config文件的内容是：

  <configSections>
    <section name="quartz" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />
  </configSections>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
    </startup>
    <quartz>
      <add key="quartz.scheduler.instanceName" value="MassTransit-Quartz" />
      <add key="quartz.scheduler.instanceId" value="AUTO" />
      <add key="quartz.threadPool.type" value="Quartz.Simpl.SimpleThreadPool, Quartz" />
      <add key="quartz.threadPool.threadCount" value="4" />
      <add key="quartz.jobStore.misfireThreshold" value="60000" />
      <add key="quartz.serializer.type" value="binary" />
      <add key="quartz.jobStore.type" value="Quartz.Impl.AdoJobStore.JobStoreTX, Quartz" />
      <add key="quartz.jobStore.useProperties" value="false" />
      <add key="quartz.jobStore.driverDelegateType" value="Quartz.Impl.AdoJobStore.SqlServerDelegate, Quartz" />
      <add key="quartz.jobStore.clustered" value="true" />
      <add key="quartz.jobStore.tablePrefix" value="QRTZ_" />
      <add key="quartz.jobStore.dataSource" value="quartzDS" />
      <add key="quartz.dataSource.quartzDS.connectionString" value="Server=.;Database=QuartzDB;Integrated Security=SSPI" />
      <add key="quartz.dataSource.quartzDS.provider" value="SqlServer" />
    </quartz>
c# rabbitmq masstransit
2个回答
0
投票

所以你没有提到你是否有第三个消费者在运行（在第三个控制台应用程序中）。要安排使用Quartz，您需要第三个专门用于石英的消费者。它必须运行，在这种情况下，石英接收端点将监听“石英”队列。

[更新]

以下是第3个控制台应用程序（石英服务）所需的配置示例：

var scheduler = CreateScheduler();
configurator.ReceiveEndpoint("quartz", e =>
{
    configurator.UseMessageScheduler(e.InputAddress);

    e.Consumer(() => new ScheduleMessageConsumer(scheduler));
    e.Consumer(() => new CancelScheduledMessageConsumer(scheduler));
});

...

private static IScheduler CreateScheduler()
{
    ISchedulerFactory schedulerFactory = new StdSchedulerFactory();

    var scheduler = schedulerFactory.GetScheduler();

    return scheduler;
}

而且你还需要为我们配置一个商店（SQLite，MSSql，RAM，如果你想在内存中测试）。请参阅example configuration here。

[/更新]

[Updated2]

有人在groups发布了类似的问题。幸运的是，它们提供了一系列不同的MT功能的sample github，其中一个是独立的调度程序。请看一下，它应该包含您需要的一切。

[Updated2]

如果你想在不运行完整的石英调度器的情况下进行测试，那么你可以使用InMemory scheduler。但这仅用于测试目的，您不应该在生产中使用它。

此外，在您的第一个代码snippit中，您不需要获取调度程序的发送端点：var sendEndpoint = await busControl.GetSendEndpoint(new Uri("rabbitmq://localhost/quartz"));

因为，在总线配置中，rabbit.UseMessageScheduler(new Uri("rabbitmq://localhost/quartz"));表示无论何时调用ScheduleSend（来自ConsumeContext或IBus / IBusControl），它都将始终使用该/ quartz地址。

最后，这行await sendEndpoint.ScheduleSend(new Uri("rabbitmq://localhost/publisher"),，你可以改为busControl.ScheduleSend(...)

0
投票

你几乎就在那里，只需更新逻辑：

busControl.Start();
scheduler.JobFactory = new MassTransitJobFactory(busControl);
scheduler.Start().Wait();

Console.ReadKey();
busControl.Stop();
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