“key was not present in the dictionary” when using generic orleans grains

Question

Just upgraded to 1.3.0 and am having issue with generic grains.

An example interface and class that's showing this issue:

public interface IGenericTest<T> : IGrainWithIntegerKey
{
    Task<T> PrintType(T obj);
}



public class GenericTestGrain<T> : Grain, IGenericTest<T>
{
    public Task<T> Print(T obj)
    {
        Debug.WriteLine("TEST");
        return Task.FromResult(obj);
    }
}

then using it like:

var grain = await GrainFactory.GetGrain<IGenericTest<int>>(0); // Runs without error.
await grain.Print(1);

Getting the grain seems to be fine, but when I call the method on the grain I get:

System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.

at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at Orleans.InterceptedMethodInvokerCache.GetInterfaceToImplementationMap(Int32 interfaceId, Type implementationType)
at Orleans.InterceptedMethodInvokerCache.CreateInterceptedMethodInvoker(Type implementationType, Int32 interfaceId, IGrainMethodInvoker invoker)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at Orleans.InterceptedMethodInvokerCache.GetOrCreate(Type implementationType, Int32 interfaceId, IGrainMethodInvoker invoker)
at Orleans.Runtime.InsideRuntimeClient.InvokeWithInterceptors(IAddressable target, InvokeMethodRequest request, IGrainMethodInvoker invoker)
at Orleans.Runtime.InsideRuntimeClient.<Invoke>d__57.MoveNext()

Is there something I'm missing? Maybe some new configuration? This worked fine with the previous version I was using.

EDIT:

Seems like it's an issue with the invoke interceptor:

providerRuntime.SetInvokeInterceptor((method, request, grain, invoker) => { return invoker.Invoke(grain, request); });

When that's removed everything works.

Answer 1

问题在这里得到解答： https ： //github.com/dotnet/orleans/issues/2358这是一个错误。