public HubMethodDescriptor(ObjectMethodExecutor methodExecutor, IServiceProviderIsService?serviceProviderIsService, IEnumerable <IAuthorizeData> policies)
{
MethodExecutor = methodExecutor;
NonAsyncReturnType = (MethodExecutor.IsMethodAsync)
? MethodExecutor.AsyncResultType !
: MethodExecutor.MethodReturnType;
foreach (var returnType in NonAsyncReturnType.GetInterfaces().Concat(NonAsyncReturnType.AllBaseTypes()))
{
if (!returnType.IsGenericType)
{
continue;
}
var openReturnType = returnType.GetGenericTypeDefinition();
if (openReturnType == typeof(IAsyncEnumerable <>))
{
StreamReturnType = returnType.GetGenericArguments()[0];
_makeCancelableEnumeratorMethodInfo = MakeCancelableAsyncEnumeratorMethod;
break;
}
if (openReturnType == typeof(ChannelReader <>))
{
StreamReturnType = returnType.GetGenericArguments()[0];
_makeCancelableEnumeratorMethodInfo = MakeAsyncEnumeratorFromChannelMethod;
break;
}
}
// Take out synthetic arguments that will be provided by the server, this list will be given to the protocol parsers
ParameterTypes = methodExecutor.MethodParameters.Where((p, index) =>
{
// Only streams can take CancellationTokens currently
if (IsStreamResponse && p.ParameterType == typeof(CancellationToken))
{
HasSyntheticArguments = true;
return(false);
}
else if (ReflectionHelper.IsStreamingType(p.ParameterType, mustBeDirectType: true))
{
if (StreamingParameters == null)
{
StreamingParameters = new List <Type>();
}
StreamingParameters.Add(p.ParameterType.GetGenericArguments()[0]);
HasSyntheticArguments = true;
return(false);
}
else if (p.CustomAttributes.Any(a => typeof(IFromServiceMetadata).IsAssignableFrom(a.AttributeType)) ||
serviceProviderIsService?.IsService(p.ParameterType) == true)
{
if (index >= 64)
{
throw new InvalidOperationException(
"Hub methods can't use services from DI in the parameters after the 64th parameter.");
}
_isServiceArgument |= (1UL << index);
HasSyntheticArguments = true;
return(false);
}
return(true);
}).Select(p => p.ParameterType).ToArray();
if (HasSyntheticArguments)
{
OriginalParameterTypes = methodExecutor.MethodParameters.Select(p => p.ParameterType).ToArray();
}
Policies = policies.ToArray();
}
public HubMethodDescriptor(ObjectMethodExecutor methodExecutor, IEnumerable <IAuthorizeData> policies)
{
MethodExecutor = methodExecutor;
NonAsyncReturnType = (MethodExecutor.IsMethodAsync)
? MethodExecutor.AsyncResultType !
: MethodExecutor.MethodReturnType;
foreach (var returnType in NonAsyncReturnType.GetInterfaces().Concat(NonAsyncReturnType.AllBaseTypes()))
{
if (!returnType.IsGenericType)
{
continue;
}
var openReturnType = returnType.GetGenericTypeDefinition();
if (openReturnType == typeof(IAsyncEnumerable <>))
{
StreamReturnType = returnType.GetGenericArguments()[0];
_makeCancelableEnumeratorMethodInfo = MakeCancelableAsyncEnumeratorMethod;
break;
}
if (openReturnType == typeof(ChannelReader <>))
{
StreamReturnType = returnType.GetGenericArguments()[0];
_makeCancelableEnumeratorMethodInfo = MakeAsyncEnumeratorFromChannelMethod;
break;
}
}
// Take out synthetic arguments that will be provided by the server, this list will be given to the protocol parsers
ParameterTypes = methodExecutor.MethodParameters.Where(p =>
{
// Only streams can take CancellationTokens currently
if (IsStreamResponse && p.ParameterType == typeof(CancellationToken))
{
HasSyntheticArguments = true;
return(false);
}
else if (ReflectionHelper.IsStreamingType(p.ParameterType, mustBeDirectType: true))
{
if (StreamingParameters == null)
{
StreamingParameters = new List <Type>();
}
StreamingParameters.Add(p.ParameterType.GetGenericArguments()[0]);
HasSyntheticArguments = true;
return(false);
}
return(true);
}).Select(p => p.ParameterType).ToArray();
if (HasSyntheticArguments)
{
OriginalParameterTypes = methodExecutor.MethodParameters.Select(p => p.ParameterType).ToArray();
}
Policies = policies.ToArray();
}
