OpenAI skill trigger/Return value from pipeline

src/DurableWorker/DurableController.cs

@@ -144,7 +144,6 @@ public bool TryGetInputBindingParameterValue(string bindingName, out object valu
 
         public void AddPipelineOutputIfNecessary(Collection<object> pipelineItems, Hashtable result)
         {
-
             if (ShouldSuppressPipelineTraces())
             {
                 var returnValue = FunctionReturnValueBuilder.CreateReturnValueFromFunctionOutput(pipelineItems);

src/FunctionInfoUtilities.cs

@@ -0,0 +1,19 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System.Linq;
+
+namespace Microsoft.Azure.Functions.PowerShellWorker
+{
+    internal class FunctionInfoUtilities
+    {
+        private const string assistantSkillTriggerName = "assistantSkillTrigger";
+
+        public static bool hasAssistantSkillTrigger(AzFunctionInfo info)
+        {
+            return info.InputBindings.Where(x => x.Value.Type == assistantSkillTriggerName).Any();
+        }
+    }
+}

src/PowerShell/PowerShellManager.cs

@@ -243,11 +243,11 @@ public Hashtable InvokeFunction(
                     else
                     {
                         var isActivityFunction = functionInfo.DurableFunctionInfo.IsActivityFunction;
-                        if (!isActivityFunction)
+                        if (!isActivityFunction && !FunctionInfoUtilities.hasAssistantSkillTrigger(functionInfo))
                         {
                             _pwsh.AddCommand(Utils.TracePipelineObjectCmdlet);
                         }
-                        return ExecuteUserCode(isActivityFunction, outputBindings);
+                        return ExecuteUserCode(isActivityFunction || FunctionInfoUtilities.hasAssistantSkillTrigger(functionInfo), outputBindings);
                     }
                 }
                 catch (RuntimeException e)

src/RequestProcessor.cs

@@ -537,7 +537,7 @@ private static void BindOutputFromResult(InvocationResponse response, AzFunction
                 }
             }
 
-            if (functionInfo.DurableFunctionInfo.ProvidesForcedDollarReturnValue)
+            if (functionInfo.DurableFunctionInfo.ProvidesForcedDollarReturnValue || FunctionInfoUtilities.hasAssistantSkillTrigger(functionInfo))
             {
                 response.ReturnValue = results[AzFunctionInfo.DollarReturn].ToTypedData(isDurableData: true);
             }

test/Unit/PowerShell/PowerShellManagerTests.cs

@@ -392,7 +392,7 @@ public void LoggerContextIsSet()
         [InlineData(DurableFunctionType.None, false)]
         [InlineData(DurableFunctionType.OrchestrationFunction, false)]
         [InlineData(DurableFunctionType.ActivityFunction, true)]
-        internal void SuppressPipelineTracesForDurableActivityFunctionOnly(DurableFunctionType durableFunctionType, bool shouldSuppressPipelineTraces)
+        internal void SuppressPipelineTracesForDurableActivityFunction(DurableFunctionType durableFunctionType, bool shouldSuppressPipelineTraces)
         {
             s_testLogger.FullLog.Clear();
 
@@ -416,6 +416,50 @@ internal void SuppressPipelineTracesForDurableActivityFunctionOnly(DurableFuncti
             }
         }
 
+        [Theory]
+        [InlineData("httpTrigger", false)]
+        [InlineData("assistantSkillTrigger", true)]
+        internal void SuppressPipelineTracesForOpenAIAssistantSkillTrigger(string inputBindingType, bool shouldSuppressPipelineTraces)
+        {
+            s_testLogger.FullLog.Clear();
+
+            var path = Path.Join(s_funcDirectory, "testFunctionWithOutput.ps1");
+
+            BindingInfo bindingInfo = null;
+            string oldBindingType = "";
+            foreach(var binding in s_functionLoadRequest.Metadata.Bindings)
+            {
+                if (binding.Value.Direction == BindingInfo.Types.Direction.In)
+                {
+                    bindingInfo = binding.Value;
+                    oldBindingType = binding.Value.Type;
+                    binding.Value.Type = inputBindingType;
+                    break;
+                }
+            }
+
+            var (functionInfo, testManager) = PrepareFunction(path, string.Empty);
+
+            try
+            {
+                FunctionMetadata.RegisterFunctionMetadata(testManager.InstanceId, functionInfo.OutputBindings);
+
+                var result = testManager.InvokeFunction(functionInfo, null, null, null, CreateOrchestratorInputData(), new FunctionInvocationPerformanceStopwatch(), null);
+
+                var relevantLogs = s_testLogger.FullLog.Where(message => message.StartsWith("Information: OUTPUT:")).ToList();
+                var expected = shouldSuppressPipelineTraces ? new string[0] : new[] { "Information: OUTPUT: Hello" };
+                Assert.Equal(expected, relevantLogs);
+            }
+            finally
+            {
+                FunctionMetadata.UnregisterFunctionMetadata(testManager.InstanceId);
+                if (bindingInfo != null)
+                {
+                    bindingInfo.Type = oldBindingType;
+                }
+            }
+        }
+
         private static List<ParameterBinding> CreateOrchestratorInputData()
         {
             var orchestrationContext = new OrchestrationContext