Question

有some documentation关于将Amazon SQS用作ServiceStack Messaging API的MQ服务器

但是消息发布者是前端Web代码，当您深入研究Email Contacts demo应用时，它使用的是Rabbit MQ。

有一个ServiceStack Email Contacts AWS App demo，但未使用Messaging API。

以电子邮件联系人中的Rabbit MQ集成测试为例：

[Test]
public void Can_Send_Email_via_MqClient()
{
    var mqFactory = new RabbitMqMessageFactory();

    using (var mqClient = mqFactory.CreateMessageQueueClient())
    {
        mqClient.Publish(new EmailContact { ContactId = 1, Subject = "UnitTest MQ Email #1", Body = "Body 1" });
        mqClient.Publish(new EmailContact { ContactId = 1, Subject = "UnitTest MQ Email #2", Body = "Body 2" });
    }
}

我很快感到困惑并误入歧途，用于Sq的ServiceStack API似乎与RabbitMQ完全不同。我什至似乎无法使用强类型POCO作为消息：

[Fact(DisplayName = "Tests that a successful message is published and received")]
public async void TestMessage()
{
    var mqFactory = new SqsConnectionFactory("awskey", "awssecret", RegionEndpoint.USWest1);

    using (IAmazonSQS mqClient = mqFactory.GetClient())
    {
        var req = new SendMessageRequest("query", "hello");

        await mqClient.SendMessageAsync(req);
        //mqClient.Publish(new Hello { Name = "World" });

        //var rec = new ReceiveMessageRequest();
        //await mqClient.Re

        //var responseMsg = mqClient.Get<HelloResponse>(QueueNames<HelloResponse>.In);
        //mqClient.Ack(responseMsg);
        //responseMsg.GetBody().Result //= Hello, World!
    }
}

是否有示例应用程序使用ServiceStack Messaging API和SQS作为MQ服务器？

Answer 1

有一个ServiceStack Email Contacts AWS App demo，但未使用Messaging API。

注意，AWS Apps确实注册了AWS SqsMqServer：

//EmailContacts
ConfigureSqsMqServer(container);

//..

private void ConfigureSqsMqServer(Container container)
{
    container.Register<IMessageService>(c => new SqsMqServer(
        AwsConfig.AwsAccessKey, AwsConfig.AwsSecretKey, RegionEndpoint.USEast1) {
        DisableBuffering = true,
    });

    var mqServer = container.Resolve<IMessageService>();
    mqServer.RegisterHandler<EmailContacts.EmailContact>(ExecuteMessage);
    mqServer.Start();
}

SqsMqServerTests.cs中还有许多示例。

如果要使用ServiceStack MQ's high-level APIs，则需要直接使用ServiceStack的MQ类而不是AWS的SQS类。

基本上，它与其他所有MQ服务器一样，您可以从IMessageFactory或IMessageService（在AppHost中注册）获取MQ客户端，并使用它来发布DTO：

var mqFactory = HostContext.TryResolve<IMessageFactory>(); //or
//var mqFactory = HostContext.TryResolve<IMessageService>().MessageFactory;

using (var mqClient = mqFactory.CreateMessageQueueClient())
{
    mqClient.Publish(new Hello { Name = "World" });
}

尽管ServiceStack Service中首选的API是使用PublishMessage()：

PublishMessage(new Hello { Name = "World" });

对/oneway预定义端点的注释请求为automatically published to the registered MQ Server。

在没有注册SqsMqServer的客户端应用中，您将创建SqsMqMessageFactory：

var mqFactory = new SqsMqMessageFactory(new SqsQueueManager(...));
using (var mqClient = mqFactory.CreateMessageQueueClient())
{
    mqClient.Publish(new Hello { Name = "World" });
}

在ServiceStack中创建C＃Amazon SQS客户端

1 个答案: