繁体   English   中英

如何在 .NetCore 2.2 中从 StartUp 注入 2 EventHubClient

[英]How to Inject 2 EventHubClient from StartUp in .NetCore 2.2

我在我的控制器中注入 EventHubClient,如下所示

services.AddScoped<EventHubClient>(a =>
     {
        eventHubClientIncomplete = EventHubClient.CreateFromConnectionString(new EventHubsConnectionStringBuilder(eventHubSettingsIncompleteApplications.ConnectionString)
        {
           EntityPath = eventHubSettingsIncompleteApplications.EventHubName
        }.ToString());
        return eventHubClientIncomplete;
     });

它工作正常。 但是现在我需要从不同的端点发送到多个 EventHubs .. 我该怎么做...有任何指针吗?

我想到了3个解决方案:

1.为EventHubClient创建自己的工厂。 然后在服务中添加工厂。 通过这种方式,您将能够在需要时注入工厂实例,然后从工厂方法中获取想要的EventHubClient

2.使用其他DI引擎。 例如:Unity Container,通过它你可以获得如下服务: container.Resolve<IService>(key)

3.创建一个类来保存EventHubClient

    public class EventHubClientHolder
    {
        public string Name;
        public EventHubClient eventHubClient;
    }
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
        services.AddSingleton<EventHubClientHolder>(_ => { return new EventHubClientHolder() { Name = "A", eventHubClient = ..... }; });
        services.AddSingleton<EventHubClientHolder>(_ => { return new EventHubClientHolder() { Name = "B", eventHubClient = ..... }; });
    }
    public HomeController(ILogger<HomeController> logger, IEnumerable<EventHubClientHolder> services)
    {
        _logger = logger;
        _services = services;
    }
    public IActionResult Index()
    {
        var eventHubClient = _services.First(_ => _.Name.Equals("A"))).eventHubClient;
        return View();
    }

暂无
暂无

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM