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.NET: [BREAKING] Support Checkpoint Serialization (#735)

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* feat: Support Checkpoint Serialization

* Implements serialization roundtripping for checkpoints.
* Adds support for JSON serialization
* Adds FileSystem-based checkpoint persistence

* fix: Executor State does not deserialize correctly

The StateManager was not properly handling delay-deserialized values.

* Fix PortableValue handling in StateManager (this makes it delegate to PortableValue the uwnrapping)
* Fix UnitTest to actually test checkpoint serialization
* Additional review comment fixes

---------

Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>
This commit is contained in:
Jacob Alber
2025-09-17 15:57:19 -04:00
committed by GitHub
Unverified
parent 2a04c4197e
commit 2015f0dc09
90 changed files with 3011 additions and 341 deletions
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dotnet/samples/GettingStarted/Workflows/ConditionalEdges/03_MultiSelection/Program.cs
+7 -7
View File
@@ -75,10 +75,10 @@ public static class Program
// After the email assistant writes a response, it will be sent to the send email executor
.AddEdge(emailAssistantExecutor, sendEmailExecutor)
// Save the analysis result to the database if summary is not needed
.AddEdge(
.AddEdge<AnalysisResult>(
emailAnalysisExecutor,
databaseAccessExecutor,
condition: analysisResult => analysisResult is AnalysisResult result && result.EmailLength <= LongEmailThreshold)
condition: analysisResult => analysisResult is not null && analysisResult.EmailLength <= LongEmailThreshold)
// Save the analysis result to the database with summary
.AddEdge(emailSummaryExecutor, databaseAccessExecutor);
var workflow = builder.Build<ChatMessage>();
@@ -107,21 +107,21 @@ public static class Program
/// Creates a partitioner for routing messages based on the analysis result.
/// </summary>
/// <returns>A function that takes an analysis result and returns the target partitions.</returns>
private static Func<object?, int, IEnumerable<int>> GetPartitioner()
private static Func<AnalysisResult?, int, IEnumerable<int>> GetPartitioner()
{
return (analysisResult, targetCount) =>
{
if (analysisResult is AnalysisResult result)
if (analysisResult is not null)
{
if (result.spamDecision == SpamDecision.Spam)
if (analysisResult.spamDecision == SpamDecision.Spam)
{
return [0]; // Route to spam handler
}
else if (result.spamDecision == SpamDecision.NotSpam)
else if (analysisResult.spamDecision == SpamDecision.NotSpam)
{
List<int> targets = [1]; // Route to the email assistant
if (result.EmailLength > LongEmailThreshold)
if (analysisResult.EmailLength > LongEmailThreshold)
{
targets.Add(2); // Route to the email summarizer too
}