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fix thread deserialization (#481)

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This commit is contained in:
Korolev Dmitry
2025-08-25 12:15:02 +00:00
committed by GitHub
parent 6ec21859cf
commit e72cfa1d71
2 changed files with 171 additions and 9 deletions
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dotnet/src/Microsoft.Extensions.AI.Agents.Hosting/AgentActor.cs
+7 -6
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@@ -33,17 +33,19 @@ internal sealed class AgentActor(
cancellationToken).ConfigureAwait(false);
this._etag = response.ETag;
var hasExistingThread = false;
if (response.Results[0] is GetValueResult threadResult)
{
if (threadResult.Value is { } threadJson)
{
// Deserialize the thread state if it exists
await agent.DeserializeThreadAsync(threadJson, cancellationToken: cancellationToken).ConfigureAwait(false);
this._thread = await agent.DeserializeThreadAsync(threadJson, cancellationToken: cancellationToken).ConfigureAwait(false);
hasExistingThread = true;
}
}
this._thread ??= agent.GetNewThread();
Log.ThreadStateRestored(logger, context.ActorId.ToString(), response.Results[0] is GetValueResult { Value: not null });
Log.ThreadStateRestored(logger, context.ActorId.ToString(), hasExistingThread);
while (!cancellationToken.IsCancellationRequested)
{
@@ -120,10 +122,9 @@ internal sealed class AgentActor(
Log.AgentStreamingUpdate(logger, requestId, i);
}
var serializedRunResponse = JsonSerializer.SerializeToElement(
updates.ToAgentRunResponse(),
AIJsonUtilities.DefaultOptions.GetTypeInfo(typeof(AgentRunResponse)));
var updatedThread = JsonSerializer.SerializeToElement(this._thread, AgentHostingJsonUtilities.DefaultOptions.GetTypeInfo(typeof(AgentThread)));
var serializedRunResponse = JsonSerializer.SerializeToElement(updates.ToAgentRunResponse(), AIJsonUtilities.DefaultOptions.GetTypeInfo(typeof(AgentRunResponse)));
var updatedThread = await this._thread.SerializeAsync(AgentHostingJsonUtilities.DefaultOptions, cancellationToken).ConfigureAwait(false);
var writeResponse = await context.WriteAsync(
new(this._etag,
[