// Searches for a TypedRpcException in an exception chain.
internal static bool FindInChain(Exception exception, out TypedRpcException typedRpcException)
{
// Initializations
typedRpcException = null;
// Looks for TypedRpc Exceptions.
while (exception != null && !(exception is TypedRpcException))
{
// Keeps searching.
exception = exception.InnerException;
}
return(typedRpcException != null);
}
// Handles requests.
public virtual async Task <JsonResponse> InvokeMethod(IOwinContext context)
{
// Declarations
string data;
JsonError error;
JsonRequest jRequest;
JsonResponse jResponse;
object handler;
MethodInfo methodInfo;
object[] parameters;
object result;
// Initializations
data = null;
jRequest = null;
try
{
// Retrieves method.
error = GetMethod(context, out data, out jRequest, out handler, out methodInfo, out parameters);
// Checks for any error.
if (error != null)
{
return(MountError(jRequest == null ? null : jRequest.Id, error));
}
// Invokes method.
result = InvokeMethod(handler, methodInfo, parameters);
// Checks if result is async.
if (result is Task)
{
// Awaits method.
await(Task) result;
// Retrieves result value.
result = result.GetType().GetProperty("Result").GetValue(result);
// Checks if it is void.
if (result.ToString() == "System.Threading.Tasks.VoidTaskResult")
{
result = null;
}
}
// Initializes response.
jResponse = new JsonResponse();
jResponse.Id = jRequest.Id;
// Checks if is a wrapped result.
if (result != null && result.GetType().IsGenericType&& result.GetType().GetGenericTypeDefinition() == typeof(TypedRpcReturn <>))
{
// Checks if result is error.
jResponse.Error = result.GetType().GetProperty("Error").GetValue(result) as JsonError;
if (jResponse.Error == null)
{
// Retrieves result value.
jResponse.Result = result.GetType().GetProperty("Data").GetValue(result);
}
}
else
{
jResponse.Result = result;
}
return(jResponse);
}
catch (Exception exception)
{
// Declarations
TypedRpcException typedRpcException;
// Looks for a TypedRpcExceptions.
if (TypedRpcException.FindInChain(exception, out typedRpcException))
{
return(MountError(jRequest.Id, typedRpcException.Error));
}
// Triggers exception event.
Options.OnCatch?.Invoke(data, jRequest, context, exception);
// Handles error.
return(MountError(jRequest.Id, JsonError.ERROR_INTERNAL));
}
}
