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.NET: [BREAKING] Workflows API Review Naming Changes (Part 1?) (#4090)

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* refactor: Normalize Run/RunStreaming with AIAgent

* refactor: Clarify Session vs. Run -level concepts

* Rename RunId to SessionId to better match Run/Session terminology in AIAgent
* [BREAKING]: Will break existing checkpointed sessions in CosmosDb due to field rename

* refactor: Rename and simplify interface around getting typed data out of ExternalRequest/Response

* Also adds hints around using value types in PortableValue

* refactor: Rename AddFanInEdge to AddFanInBarrierEdge

This will prevent a breaking change later when we introduce a programmable FanIn edge, analogous to the FanOut edge's EdgeSelector.

The goal, in the long run is to support a number of different FanIn scenarios, with naive FanIn (no barrier) by default, similar to FanOut.

* refactor: AsAgent(this Workflow, ...) => AsAIAgent(...)

* misc - part1: SwitchBuilder internal

---------

Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>
This commit is contained in:
Jacob Alber
2026-02-19 21:05:18 -05:00
committed by GitHub
Unverified
parent 5fd260e11d
commit 0086d38f58
93 changed files with 397 additions and 458 deletions
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dotnet/src/Shared/Workflows/Execution/WorkflowRunner.cs
+6 -5
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@@ -68,7 +68,7 @@ internal sealed class WorkflowRunner
checkpointManager = CheckpointManager.CreateInMemory();
}
StreamingRun run = await InProcessExecution.StreamAsync(workflow, input, checkpointManager).ConfigureAwait(false);
StreamingRun run = await InProcessExecution.RunStreamingAsync(workflow, input, checkpointManager).ConfigureAwait(false);
bool isComplete = false;
ExternalResponse? requestResponse = null;
@@ -95,7 +95,7 @@ internal sealed class WorkflowRunner
Debug.WriteLine($"RESTORE #{this.LastCheckpoint.CheckpointId}");
Notify("WORKFLOW: Restore", ConsoleColor.DarkYellow);
run = await InProcessExecution.ResumeStreamAsync(workflow, this.LastCheckpoint, checkpointManager).ConfigureAwait(false);
run = await InProcessExecution.ResumeStreamingAsync(workflow, this.LastCheckpoint, checkpointManager).ConfigureAwait(false);
}
else
{
@@ -272,9 +272,10 @@ internal sealed class WorkflowRunner
/// </summary>
private async ValueTask<ExternalInputResponse> HandleExternalRequestAsync(ExternalRequest request)
{
ExternalInputRequest inputRequest =
request.DataAs<ExternalInputRequest>() ??
throw new InvalidOperationException($"Expected external request type: {request.GetType().Name}.");
if (!request.TryGetDataAs<ExternalInputRequest>(out var inputRequest))
{
throw new InvalidOperationException($"Expected external request type: {request.PortInfo.RequestType}.");
}
List<ChatMessage> responseMessages = [];