/// <summary>
///
/// </summary>
/// <param name="method"></param>
/// <param name="headers"></param>
/// <param name="requestObject"></param>
/// <returns></returns>
public Task <object> CallGrpcAsync(GrpcMethodHandlerInfo method, IDictionary <string, string> headers, object requestObject)
{
object requests;
if (requestObject != null && typeof(IEnumerable <>).MakeGenericType(method.RequestType).IsAssignableFrom(requestObject.GetType()))
{
requests = requestObject;
}
else
{
Array ary = Array.CreateInstance(method.RequestType, 1);
ary.SetValue(requestObject, 0);
requests = ary;
}
System.Reflection.MethodInfo m = typeof(GatewayMiddleware).GetMethod("CallGrpcAsyncCore", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
Task <object> task = (Task <object>)m.MakeGenericMethod(new Type[] { method.RequestType, method.ResponseType }).Invoke(this, new object[] { method, headers, requests });
return(task);
}
private Task <object> CallGrpcAsyncCore <TRequest, TResponse>(GrpcMethodHandlerInfo method, IDictionary <string, string> headers, IEnumerable <TRequest> requests) where TRequest : class where TResponse : class
{
Channel channel = new Channel("127.0.0.1:50051", ChannelCredentials.Insecure);
CallInvoker invoker = new MiddlewareCallInvoker(channel, MiddlewarePipeline);
CallOptions option = CreateCallOptions(headers);
Method <TRequest, TResponse> rpc = (Method <TRequest, TResponse>)method.Method;
switch (rpc.Type)
{
case MethodType.Unary:
Task <TResponse> taskUnary = AsyncUnaryCall(invoker, rpc, option, requests.FirstOrDefault());
var s = taskUnary.Result;
return(Task.FromResult <object>(taskUnary.Result));
case MethodType.ClientStreaming:
Task <TResponse> taskClientStreaming = AsyncClientStreamingCall(invoker, rpc, option, requests);
return(Task.FromResult <object>(taskClientStreaming.Result));
case MethodType.ServerStreaming:
Task <IList <TResponse> > taskServerStreaming = AsyncServerStreamingCall(invoker, rpc, option, requests.FirstOrDefault());
return(Task.FromResult <object>(taskServerStreaming.Result));
case MethodType.DuplexStreaming:
Task <IList <TResponse> > taskDuplexStreaming = AsyncDuplexStreamingCall(invoker, rpc, option, requests);
return(Task.FromResult <object>(taskDuplexStreaming.Result));
default:
throw new NotSupportedException(string.Format("MethodType '{0}' is not supported.", rpc.Type));
}
}
private static Method <TRequest, TResponse> CreateMethodCore <TRequest, TResponse>(string serviceName, GrpcMethodHandlerInfo handler, IGrpcMarshallerFactory marshallerFactory)
{
return(new Method <TRequest, TResponse>(handler.MethodType, serviceName, handler.Handler.Name, marshallerFactory.GetMarshaller <TRequest>(), marshallerFactory.GetMarshaller <TResponse>()));
}
public static IMethod CreateMethod(string serviceName, GrpcMethodHandlerInfo handler, IGrpcMarshallerFactory marshallerFactory)
{
MethodInfo m = typeof(GrpcReflection).GetMethod("CreateMethodCore", BindingFlags.Static | BindingFlags.NonPublic);
return((IMethod)m.MakeGenericMethod(new Type[] { handler.RequestType, handler.ResponseType }).Invoke(null, new object[] { serviceName, handler, marshallerFactory }));
}
