Added UserContextFactory to GraphQLUploadOptions

Author: scrodde

src/GraphQL.Upload.AspNetCore/GraphQLUploadMiddleware.cs

@@ -90,7 +90,8 @@ public async Task InvokeAsync(HttpContext context)
                     Schema = schema,
                     Query = request.Query,
                     OperationName = request.OperationName,
-                    Inputs = request.GetInputs()
+                    Inputs = request.GetInputs(),
+                    UserContext = _options.UserContextFactory?.Invoke(context)
                 }
             )));
 

src/GraphQL.Upload.AspNetCore/GraphQLUploadOptions.cs

@@ -1,4 +1,7 @@
-namespace GraphQL.Upload.AspNetCore
+using System;
+using Microsoft.AspNetCore.Http;
+
+namespace GraphQL.Upload.AspNetCore
 {
     /// <summary>
     /// Options for <see cref="GraphQLUploadMiddleware{TSchema}"/>.
@@ -14,5 +17,10 @@ public class GraphQLUploadOptions
         /// The maximum allowed amount of files. Null indicates no limit at all.
         /// </summary>
         public long? MaximumFileCount { get; set; }
+
+        /// <summary>
+        /// Gets or sets the user context factory.
+        /// </summary>
+        public Func<HttpContext, object> UserContextFactory { get; set; }
     }
 }