azure - 服务结构 asp .net core IoC 错误 : cannot be dynamically proxied

Question

我试图在我的 api 中添加一些 IoC 并不断收到此错误:

The type Inovatic.SF.Windows.Facade.Facade cannot be dynamically proxied. Service types must not be sealed and need to be visible to the DynamicProxyGenAssembly2 assembly. This can be achieved by making the type public or adding the InternalsVisibleToAttribute to the assembly containing the type. e.g. [assembly: InternalsVisibleTo(InternalsVisible.ToDynamicProxyGenAssembly2)]

program.cs:
//[assembly: InternalsVisibleTo(InternalsVisible.ToDynamicProxyGenAssembly2)]
namespace Inovatic.SF.Windows.Facade
{
internal static class Program
{
    /// <summary>
    /// This is the entry point of the service host process.
    /// </summary>
    private static void Main()
    {
        try
        {
            var builder = new ContainerBuilder();
            builder.RegisterModule(new GlobalAutofacModule());
            builder.RegisterServiceFabricSupport();
            builder.RegisterStatelessService<Facade>("Inovatic.SF.Windows.FacadeType");

            using (builder.Build())
            {
                ServiceEventSource.Current.ServiceTypeRegistered(Process.GetCurrentProcess().Id, typeof(Facade).Name);
                Thread.Sleep(Timeout.Infinite);
            }
        }
        catch (Exception e)
        {
            ServiceEventSource.Current.ServiceHostInitializationFailed(e.ToString());
            throw;
        }
    }
}

public class GlobalAutofacModule : Module
{
    protected override void Load(ContainerBuilder builder)
    {
        builder.RegisterType<ConfigSettings>();
        builder.RegisterType<PaymentRepository>().As<IPaymentRepository>();
    }
}

}

我尝试把它放在哪里(但不确定它应该放在哪里):

[assembly: InternalsVisibleTo(InternalsVisible.ToDynamicProxyGenAssembly2)]

还尝试将 Program 类标记为公共(public)，但这似乎不起作用

编辑:

namespace Inovatic.SF.Windows.Facade
{
internal sealed class Facade : StatelessService
{
    public Facade(StatelessServiceContext context)
        : base(context)
    { 
        var telemetryConfig = TelemetryConfiguration.Active;
        telemetryConfig.InstrumentationKey = Environment.GetEnvironmentVariable("ApplicationInsightsKey");
        FabricTelemetryInitializerExtension.SetServiceCallContext(context);
    }

    /// <summary>
    /// Optional override to create listeners (like tcp, http) for this service instance.
    /// </summary>
    /// <returns>The collection of listeners.</returns>
    protected override IEnumerable<ServiceInstanceListener> CreateServiceInstanceListeners()
    {
        var endpoints = Context.CodePackageActivationContext.GetEndpoints()
            .Where(endpoint => endpoint.Protocol == EndpointProtocol.Http 
            || endpoint.Protocol == EndpointProtocol.Https);

        return endpoints.Select(endpoint => new ServiceInstanceListener(serviceContext =>
            new KestrelCommunicationListener(serviceContext, endpoint.Name, (url, listener) =>
            {
                ServiceEventSource.Current.ServiceMessage(serviceContext, $"Starting Kestrel on {url}");

                return new WebHostBuilder()
                    .UseKestrel(options =>
                    {
                        if (endpoint.Protocol == EndpointProtocol.Http)
                            options.Listen(IPAddress.Any, endpoint.Port);
                        else if (endpoint.Protocol == EndpointProtocol.Https)
                            options.Listen(IPAddress.Any, endpoint.Port,
                                listenOptions => listenOptions.UseHttps(Certificates.GetCertificateFromLocalStore(
                                        Environment.GetEnvironmentVariable("ClusterCertifThumbprint"))));
                    })
                    .ConfigureServices(
                        services =>
                        {
                            services
                                .AddSingleton(new ConfigSettings())
                                .AddSingleton(serviceContext)
                                .AddSingleton(new HttpClient())
                                .AddSingleton(new FabricClient());
                        })
                    .UseContentRoot(Directory.GetCurrentDirectory())
                    .UseStartup<Startup>()
                    .UseServiceFabricIntegration(listener, ServiceFabricIntegrationOptions.None)
                    .UseEnvironment(Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"))
                    .UseUrls(url)
                    .UseApplicationInsights()
                    .Build();
            }), endpoint.Name));
    }
}

}

Answer 1

您必须将Facade类公开并删除sealed关键字(因为autofac创建一个继承自您的类的代理类。如果它是密封的，那就是禁止)。

所以改变

internal sealed class Facade : StatelessService

至

public class Facade : StatelessService

那么你就不再需要这个了

[assembly: InternalsVisibleTo(InternalsVisible.ToDynamicProxyGenAssembly2)]