update to NSB 10

src/Directory.Build.props

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
-    <Version>3.1.0</Version>
+    <Version>4.0.0</Version>
     <AssemblyVersion>1.0.0</AssemblyVersion>
     <LangVersion>preview</LangVersion>
     <PackageTags>NServiceBus, Handler Ordering</PackageTags>

src/HandlerOrdering/NServiceBus.Community.HandlerOrdering.csproj

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <RootNamespace>NServiceBus.HandlerOrdering</RootNamespace>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="NServiceBus" Version="9.2.7" />
+    <PackageReference Include="NServiceBus" Version="10.0.0" />
     <PackageReference Include="ProjectDefaults" Version="1.0.170" PrivateAssets="all" />
   </ItemGroup>
 </Project>

src/HandlerOrdering/OrderHandlers.cs

@@ -1,6 +1,13 @@
 class OrderHandlers :
     INeedInitialization
 {
+    static readonly Lazy<MethodInfo> addHandlerMethod = new(() =>
+    {
+        var extensionsType = typeof(EndpointConfiguration).Assembly.GetType("NServiceBus.MessageHandlerRegistrationExtensions");
+        return extensionsType?.GetMethod("AddHandler", BindingFlags.Static | BindingFlags.Public)
+            ?? throw new("Could not find 'AddHandler' method on MessageHandlerRegistrationExtensions. Raise an issue here https://github.com/NServiceBusCommunity/NServiceBus.Community.HandlerOrdering/issues/new");
+    });
+
     public void Customize(EndpointConfiguration configuration)
     {
         if (configuration.GetApplyInterfaceHandlerOrdering())
@@ -13,19 +20,21 @@ static void ApplyInterfaceHandlerOrdering(EndpointConfiguration configuration)
     {
         var handlerDependencies = GetHandlerDependencies(configuration);
         var sorted = new TypeSorter(handlerDependencies).Sorted;
-        configuration.ExecuteTheseHandlersFirst(sorted);
+
+        foreach (var handlerType in sorted)
+        {
+            var genericMethod = addHandlerMethod.Value.MakeGenericMethod(handlerType);
+            genericMethod.Invoke(null, [configuration]);
+        }
     }
 
     static Dictionary<Type, List<Type>> GetHandlerDependencies(EndpointConfiguration configuration)
     {
-        var field = typeof(EndpointConfiguration)
-            .GetField("scannedTypes", BindingFlags.Instance | BindingFlags.NonPublic);
-        if (field == null)
+        var settings = configuration.GetSettings();
+        if (!settings.TryGet("TypesToScan", out List<Type> types))
         {
-            throw new($"Could not extract 'scannedTypes' field from {nameof(EndpointConfiguration)}. Raise an issue here https://github.com/NServiceBusExtensions/NServiceBus.HandlerOrdering/issues/new");
+            throw new("Could not extract 'TypesToScan' from settings. Raise an issue here https://github.com/NServiceBusCommunity/NServiceBus.Community.HandlerOrdering/issues/new");
         }
-
-        var types = (List<Type>) field.GetValue(configuration)!;
         return GetHandlerDependencies(types);
     }
 

src/HandlerOrdering/TypeSorter.cs

@@ -14,6 +14,7 @@ public TypeSorter(Dictionary<Type, List<Type>> dependencies)
             stack = new();
             Visit(item);
         }
+
         Sorted = new(sorted);
     }
 
@@ -36,8 +37,10 @@ void Visit(Type item)
 
                 throw new(stringBuilder.ToString());
             }
+
             return;
         }
+
         visited.Add(item);
         if (dependencies.TryGetValue(item, out var values))
         {
@@ -46,6 +49,7 @@ void Visit(Type item)
                 Visit(dependency);
             }
         }
+
         sorted.Add(item);
     }
 }

src/Sample/Sample.csproj

@@ -5,7 +5,7 @@
     <LangVersion>7.1</LangVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="NServiceBus" Version="9.2.7" />
+    <PackageReference Include="NServiceBus" Version="10.0.0" />
     <ProjectReference Include="..\HandlerOrdering\NServiceBus.Community.HandlerOrdering.csproj" />
   </ItemGroup>
 </Project>