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.NET: [Feature Branch] Adding support for events & shared state in durable workflows (#4020)

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* Adding support for events & shared state in durable workflows.

* PR feedback fixes

* PR feedback fixes.

* Add YieldOutputAsync calls to 05_WorkflowEvents sample executors

The integration test asserts that WorkflowOutputEvent is found in the
stream, but the sample executors only used AddEventAsync for custom
events and never called YieldOutputAsync. Since WorkflowOutputEvent is
only emitted via explicit YieldOutputAsync calls, the assertion would
fail. Added YieldOutputAsync to each executor to match the test
expectation and demonstrate the API in the sample.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix deserialization to use shared serializer options.

* PR feedback updates.

* Sample cleanup

* PR feedback fixes

* Addressing PR review feedback for DurableStreamingWorkflowRun

   - Use -1 instead of 0 for taskId in TaskFailedException when task ID is not relevant.
   - Add [NotNullWhen(true)] to TryParseWorkflowResult out parameter following .NET TryXXX conventions.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Shyju Krishnankutty
2026-02-20 16:49:47 -08:00
committed by GitHub
co-authored by Copilot
parent b62b1f2191
commit 3256baa8b6
37 changed files with 3498 additions and 215 deletions
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dotnet/src/Microsoft.Agents.AI.DurableTask/Workflows/DurableWorkflowClient.cs
+35 -1
View File
@@ -1,4 +1,4 @@
// Copyright (c) Microsoft. All rights reserved.
// Copyright (c) Microsoft. All rights reserved.
using Microsoft.Agents.AI.Workflows;
using Microsoft.DurableTask;
@@ -58,4 +58,38 @@ internal sealed class DurableWorkflowClient : IWorkflowClient
string? runId = null,
CancellationToken cancellationToken = default)
=> this.RunAsync<string>(workflow, input, runId, cancellationToken);
/// <inheritdoc/>
public async ValueTask<IStreamingWorkflowRun> StreamAsync<TInput>(
Workflow workflow,
TInput input,
string? runId = null,
CancellationToken cancellationToken = default)
where TInput : notnull
{
ArgumentNullException.ThrowIfNull(workflow);
if (string.IsNullOrEmpty(workflow.Name))
{
throw new ArgumentException("Workflow must have a valid Name property.", nameof(workflow));
}
DurableWorkflowInput<TInput> workflowInput = new() { Input = input };
string instanceId = await this._client.ScheduleNewOrchestrationInstanceAsync(
orchestratorName: WorkflowNamingHelper.ToOrchestrationFunctionName(workflow.Name),
input: workflowInput,
options: runId is not null ? new StartOrchestrationOptions(runId) : null,
cancellation: cancellationToken).ConfigureAwait(false);
return new DurableStreamingWorkflowRun(this._client, instanceId, workflow);
}
/// <inheritdoc/>
public ValueTask<IStreamingWorkflowRun> StreamAsync(
Workflow workflow,
string input,
string? runId = null,
CancellationToken cancellationToken = default)
=> this.StreamAsync<string>(workflow, input, runId, cancellationToken);
}