From b59050699ba9e443d8c004a81aaaa747c151e76a Mon Sep 17 00:00:00 2001
From: Garrett Beatty <gcbeatty@amazon.com>
Date: Mon, 11 May 2026 16:44:02 -0400
Subject: [PATCH 1/3] Add Amazon.Lambda.DurableExecution project scaffolding
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Establishes the package metadata for the durable execution SDK:
src project (net8.0, trimmable, signed) and the matching test project
with InternalsVisibleTo wired up. No public API is added yet — a
single sanity test verifies the assembly loads.

Subsequent PRs will add the actual SDK contents on top of this scaffolding.

stack-info: PR: https://github.com/aws/aws-lambda-dotnet/pull/2359, branch: GarrettBeatty/stack/1

build

PR comments

PR comments
---
 .autover/autover.json                         |  4 +++
 .../Amazon.Lambda.DurableExecution.csproj     | 34 +++++++++++++++++++
 .../AssemblyMarker.cs                         |  5 +++
 ...mazon.Lambda.DurableExecution.Tests.csproj | 28 +++++++++++++++
 .../AssemblyLoadTests.cs                      | 13 +++++++
 buildtools/build.proj                         |  1 +
 6 files changed, 85 insertions(+)
 create mode 100644 Libraries/src/Amazon.Lambda.DurableExecution/Amazon.Lambda.DurableExecution.csproj
 create mode 100644 Libraries/src/Amazon.Lambda.DurableExecution/AssemblyMarker.cs
 create mode 100644 Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
 create mode 100644 Libraries/test/Amazon.Lambda.DurableExecution.Tests/AssemblyLoadTests.cs

diff --git a/.autover/autover.json b/.autover/autover.json
index 8985c52bb..e50361903 100644
--- a/.autover/autover.json
+++ b/.autover/autover.json
@@ -47,6 +47,10 @@
       "Name": "Amazon.Lambda.Core",
       "Path": "Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj"
     },
+    {
+      "Name": "Amazon.Lambda.DurableExecution",
+      "Path": "Libraries/src/Amazon.Lambda.DurableExecution/Amazon.Lambda.DurableExecution.csproj"
+    },
     {
       "Name": "Amazon.Lambda.DynamoDBEvents",
       "Path": "Libraries/src/Amazon.Lambda.DynamoDBEvents/Amazon.Lambda.DynamoDBEvents.csproj"
diff --git a/Libraries/src/Amazon.Lambda.DurableExecution/Amazon.Lambda.DurableExecution.csproj b/Libraries/src/Amazon.Lambda.DurableExecution/Amazon.Lambda.DurableExecution.csproj
new file mode 100644
index 000000000..9139edb18
--- /dev/null
+++ b/Libraries/src/Amazon.Lambda.DurableExecution/Amazon.Lambda.DurableExecution.csproj
@@ -0,0 +1,34 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\..\..\buildtools\common.props" />
+
+  <PropertyGroup>
+    <TargetFrameworks>$(DefaultPackageTargets)</TargetFrameworks>
+    <Description>Amazon Lambda .NET SDK for Durable Execution - write multi-step workflows that persist state automatically.</Description>
+    <AssemblyTitle>Amazon.Lambda.DurableExecution</AssemblyTitle>
+    <Version>0.1.0</Version>
+    <AssemblyName>Amazon.Lambda.DurableExecution</AssemblyName>
+    <PackageId>Amazon.Lambda.DurableExecution</PackageId>
+    <PackageTags>AWS;Amazon;Lambda;Durable;Workflow</PackageTags>
+    <IsTrimmable>true</IsTrimmable>
+    <EnableTrimAnalyzer>true</EnableTrimAnalyzer>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
+      <_Parameter1>Amazon.Lambda.DurableExecution.Tests, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
+    </AssemblyAttribute>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Amazon.Lambda.Core\Amazon.Lambda.Core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AWSSDK.Lambda" Version="4.0.13.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.0" />
+  </ItemGroup>
+
+</Project>
diff --git a/Libraries/src/Amazon.Lambda.DurableExecution/AssemblyMarker.cs b/Libraries/src/Amazon.Lambda.DurableExecution/AssemblyMarker.cs
new file mode 100644
index 000000000..770e6ccd2
--- /dev/null
+++ b/Libraries/src/Amazon.Lambda.DurableExecution/AssemblyMarker.cs
@@ -0,0 +1,5 @@
+namespace Amazon.Lambda.DurableExecution;
+
+internal static class AssemblyMarker
+{
+}
diff --git a/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
new file mode 100644
index 000000000..ff6ba3c6a
--- /dev/null
+++ b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>$(DefaultPackageTargets)</TargetFrameworks>
+    <AssemblyName>Amazon.Lambda.DurableExecution.Tests</AssemblyName>
+    <PackageId>Amazon.Lambda.DurableExecution.Tests</PackageId>
+    <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
+    <AssemblyOriginatorKeyFile>..\..\..\buildtools\public.snk</AssemblyOriginatorKeyFile>
+    <SignAssembly>true</SignAssembly>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Amazon.Lambda.DurableExecution\Amazon.Lambda.DurableExecution.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
+
+</Project>
diff --git a/Libraries/test/Amazon.Lambda.DurableExecution.Tests/AssemblyLoadTests.cs b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/AssemblyLoadTests.cs
new file mode 100644
index 000000000..84295a2e1
--- /dev/null
+++ b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/AssemblyLoadTests.cs
@@ -0,0 +1,13 @@
+using Xunit;
+
+namespace Amazon.Lambda.DurableExecution.Tests;
+
+public class AssemblyLoadTests
+{
+    [Fact]
+    public void DurableExecutionAssembly_Loads()
+    {
+        var assembly = typeof(AssemblyMarker).Assembly;
+        Assert.Equal("Amazon.Lambda.DurableExecution", assembly.GetName().Name);
+    }
+}
diff --git a/buildtools/build.proj b/buildtools/build.proj
index 037c11f0a..0b80ec612 100644
--- a/buildtools/build.proj
+++ b/buildtools/build.proj
@@ -215,6 +215,7 @@
         <Exec Command="dotnet test -c $(Configuration)" WorkingDirectory="..\Libraries\test\SnapshotRestore.Registry.Tests"/>
         <Exec Command="dotnet test -c $(Configuration)" WorkingDirectory="..\Libraries\test\Amazon.Lambda.RuntimeSupport.Tests\Amazon.Lambda.RuntimeSupport.UnitTests"/>
         <Exec Command="dotnet test -c $(Configuration)" WorkingDirectory="..\Libraries\test\Amazon.Lambda.Annotations.SourceGenerators.Tests"/>
+        <Exec Command="dotnet test -c $(Configuration)" WorkingDirectory="..\Libraries\test\Amazon.Lambda.DurableExecution.Tests"/>
     </Target>
     <Target Name="run-integ-tests">
         <Exec Command="dotnet test -c $(Configuration) --logger &quot;console;verbosity=detailed&quot;" WorkingDirectory="..\Libraries\test\Amazon.Lambda.RuntimeSupport.Tests\Amazon.Lambda.RuntimeSupport.IntegrationTests"/>

From 84fd593d6e5bdea6574be1903f9f7a4f9d0090e5 Mon Sep 17 00:00:00 2001
From: Norm Johanson <normj@amazon.com>
Date: Tue, 12 May 2026 16:24:02 -0700
Subject: [PATCH 2/3] Fix build issues

---
 .../Amazon.Lambda.DurableExecution.Tests.csproj              | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
index ff6ba3c6a..d8d1615c9 100644
--- a/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
+++ b/Libraries/test/Amazon.Lambda.DurableExecution.Tests/Amazon.Lambda.DurableExecution.Tests.csproj
@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <Import Project="..\..\..\buildtools\common.props" />
+
   <PropertyGroup>
     <TargetFrameworks>$(DefaultPackageTargets)</TargetFrameworks>
     <AssemblyName>Amazon.Lambda.DurableExecution.Tests</AssemblyName>
@@ -9,6 +11,7 @@
     <SignAssembly>true</SignAssembly>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
+	<NoWarn>$(NoWarn);CS1591</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
@@ -16,7 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
   </ItemGroup>

From bd8d8efbb407080bf7233f93a9fe0c24a598e3df Mon Sep 17 00:00:00 2001
From: Garrett Beatty <gcbeatty@amazon.com>
Date: Wed, 13 May 2026 11:39:28 -0400
Subject: [PATCH 3/3] Add Amazon.Lambda.DurableExecution to CONTRIBUTING.md
 projects list

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 CONTRIBUTING.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 31e288af2..63777c644 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -85,6 +85,7 @@ The available projects are:
 * Amazon.Lambda.ConfigEvents
 * Amazon.Lambda.ConnectEvents
 * Amazon.Lambda.Core
+* Amazon.Lambda.DurableExecution
 * Amazon.Lambda.DynamoDBEvents
 * Amazon.Lambda.DynamoDBEvents.SDK.Convertor
 * Amazon.Lambda.KafkaEvents