JWT域上auth的GraqhQL问题

所以我将graphql作为后端,React/Apollo作为前端。

除此之外,我还有我的中间件,其中给出了HttpContext,用户正确地加载了所有声明:

namespace xxx.Web.GQL.Middleware
{
public class GraphQLMiddleware
{
    private readonly RequestDelegate _next;
    private readonly IDocumentWriter _writer;
    private readonly IDocumentExecuter _executor;
    private readonly ISchema _schema;

    public GraphQLMiddleware(RequestDelegate next, IDocumentWriter writer, IDocumentExecuter executor, ISchema schema)
    {
        _next = next;
        _writer = writer;
        _executor = executor;
        _schema = schema;
    }

    public async Task InvokeAsync(HttpContext httpContext)
    {
        if (httpContext.Request.Path.StartsWithSegments("/graphql") && string.Equals(httpContext.Request.Method, "POST", StringComparison.OrdinalIgnoreCase))
        {
            string body;
            using (var streamReader = new StreamReader(httpContext.Request.Body))
            {
                body = await streamReader.ReadToEndAsync();

                var request = JsonConvert.DeserializeObject<GraphQLQuery>(body);

                var result = await _executor.ExecuteAsync(doc =>
                {
                    doc.Schema = _schema;
                    doc.Query = request.Query;
                    doc.Inputs = request.Variables.ToInputs();
                    doc.ExposeExceptions = true;
                    doc.UserContext = httpContext.User;
                }).ConfigureAwait(false);

                var json = _writer.Write(result);
                await httpContext.Response.WriteAsync(json);
            }
        }
        else
        {
            await _next(httpContext);
        }
    }
}
}

在这之前一切都很好。

可悲的是,我正挣扎着继续前进。我添加了GraphQL.Authorization numget,但是所有给定的信息都不足以用它构建一些工作代码。

我能做的当然是访问查询解析器中的userContext并“手动”检查它,但我试图避免它;)

Field<StringGraphType>(
          name: "hallo",
          resolve: c =>
          {
              var userPrinc = (ClaimsPrincipal)c.UserContext;
              var allowed = userPrinc.Claims.Any(x => x.Type == "Role" && x.Value == "Admin" || x.Value == "Mod");
              if (!allowed)
              {
                  throw new Exception("TODO: Make this a 401 FORBIDDEN");
              }
              return "World";
          }

所以我想要的是: 检查字段级的声明(用于查询或变异),以获取具有一个或多个角色的给定声明。