Use ActivatorUtilities.GetServiceOrCreateInstance for TaskActivity in…

… Azure Functions (#105)
microsoft · Jan 9, 2023 · c38ca9f · c38ca9f
1 parent acebb3a
commit c38ca9f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.0.0
+
+- Durable Functions class-based syntax now resolves `ITaskActivity` instances from `IServiceProvider`, if available there.
+
 ## v1.0.0-rc.1
 
 ### Included Packages

diff --git a/src/Generators/DurableTaskSourceGenerator.cs b/src/Generators/DurableTaskSourceGenerator.cs
@@ -212,7 +212,7 @@ static void AddActivityFunctionDeclaration(StringBuilder sourceBuilder, DurableT
         [Function(nameof({activity.TaskName}))]
         public static async Task<{activity.OutputType}> {activity.TaskName}([ActivityTrigger] {activity.InputParameter}, string instanceId, FunctionContext executionContext)
         {{
-            ITaskActivity activity = ActivatorUtilities.CreateInstance<{activity.TypeName}>(executionContext.InstanceServices);
+            ITaskActivity activity = ActivatorUtilities.GetServiceOrCreateInstance<{activity.TypeName}>(executionContext.InstanceServices);
             TaskActivityContext context = new GeneratedActivityContext(""{activity.TaskName}"", instanceId);
             object? result = await activity.RunAsync(context, input);
             return ({activity.OutputType})result!;