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.NET: feat: Refactor Handoff Orchestration and add HITL support (#5174)

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* feat: Refactor Handoff Orchestration and add HITL support

* Change HandoffAgentExecutor to use factory-based instantiation
* Extract shared request collection logic in AIAgentUnservicedRequestsCollector
* Refactor HandoffAgentExecutor to use the "ContinueTurn" pattern as in AIAgentHostExecutor

* fix: Remove '$' from exception strings
This commit is contained in:
Jacob Alber
2026-04-13 14:59:17 +00:00
committed by GitHub
parent 39b560f83c
commit 76fe7319e0
10 changed files with 758 additions and 201 deletions
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dotnet/src/Microsoft.Agents.AI.Workflows/StatefulExecutor.cs
+17 -15
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@@ -113,6 +113,12 @@ public abstract class StatefulExecutor<TState> : Executor
{
if (!skipCache && !context.ConcurrentRunsEnabled)
{
if (this._stateCache is null)
{
this._stateCache = await context.ReadOrInitStateAsync(this.StateKey, this._initialStateFactory, this.Options.ScopeName, cancellationToken)
.ConfigureAwait(false);
}
TState newState = await invocation(this._stateCache ?? this._initialStateFactory(),
context,
cancellationToken).ConfigureAwait(false)
@@ -168,9 +174,12 @@ public abstract class StatefulExecutor<TState, TInput>(string id,
/// <inheritdoc/>
protected override ProtocolBuilder ConfigureProtocol(ProtocolBuilder protocolBuilder)
{
protocolBuilder.RouteBuilder.AddHandler<TInput>(this.HandleAsync);
Func<TInput, IWorkflowContext, CancellationToken, ValueTask> handlerDelegate = this.HandleAsync;
return protocolBuilder.SendsMessageTypes(sentMessageTypes ?? [])
return protocolBuilder.ConfigureRoutes(routeBuilder => routeBuilder.AddHandler(handlerDelegate))
.AddMethodAttributeTypes(handlerDelegate.Method)
.AddClassAttributeTypes(this.GetType())
.SendsMessageTypes(sentMessageTypes ?? [])
.YieldsOutputTypes(outputTypes ?? []);
}
@@ -203,19 +212,12 @@ public abstract class StatefulExecutor<TState, TInput, TOutput>(string id,
/// <inheritdoc/>
protected override ProtocolBuilder ConfigureProtocol(ProtocolBuilder protocolBuilder)
{
protocolBuilder.RouteBuilder.AddHandler<TInput, TOutput>(this.HandleAsync);
if (this.Options.AutoSendMessageHandlerResultObject)
{
protocolBuilder.SendsMessage<TOutput>();
}
if (this.Options.AutoYieldOutputHandlerResultObject)
{
protocolBuilder.YieldsOutput<TOutput>();
}
return protocolBuilder.SendsMessageTypes(sentMessageTypes ?? []).YieldsOutputTypes(outputTypes ?? []);
Func<TInput, IWorkflowContext, CancellationToken, ValueTask<TOutput>> handlerDelegate = this.HandleAsync;
return protocolBuilder.ConfigureRoutes(routeBuilder => routeBuilder.AddHandler(handlerDelegate))
.AddMethodAttributeTypes(handlerDelegate.Method)
.AddClassAttributeTypes(this.GetType())
.SendsMessageTypes(sentMessageTypes ?? [])
.YieldsOutputTypes(outputTypes ?? []);
}
/// <inheritdoc/>