From 043bdc5e77f540700105d62b924ca2dac2c44e75 Mon Sep 17 00:00:00 2001
From: Ryan Lamb <4955475+kinyoklion@users.noreply.github.com>
Date: Thu, 18 Dec 2025 13:03:15 -0800
Subject: [PATCH] chore: Enable FDv2 public experimental support.

---
 pkgs/sdk/server/src/Components.cs                  |  3 +--
 pkgs/sdk/server/src/Configuration.cs               |  3 +--
 pkgs/sdk/server/src/ConfigurationBuilder.cs        |  3 +--
 .../server/src/Integrations/DataSystemBuilder.cs   | 14 +++++++++++---
 .../src/Integrations/DataSystemComponents.cs       |  3 +--
 .../sdk/server/src/Integrations/DataSystemModes.cs |  3 +--
 .../Integrations/FDv2PollingDataSourceBuilder.cs   |  4 +---
 .../Integrations/FDv2StreamingDataSourceBuilder.cs |  7 +++----
 pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj  |  2 +-
 .../src/Subsystems/DataSystemConfiguration.cs      |  4 +---
 pkgs/sdk/server/src/Subsystems/ISelectorSource.cs  |  4 +---
 pkgs/sdk/server/src/Subsystems/LdClientContext.cs  |  3 +--
 .../Internal/FDv2DataSources/FDv2DataSourceTest.cs |  9 +++------
 13 files changed, 27 insertions(+), 35 deletions(-)

diff --git a/pkgs/sdk/server/src/Components.cs b/pkgs/sdk/server/src/Components.cs
index 188cf6eb..77c808e6 100644
--- a/pkgs/sdk/server/src/Components.cs
+++ b/pkgs/sdk/server/src/Components.cs
@@ -490,7 +490,6 @@ public static StreamingDataSourceBuilder StreamingDataSource() =>
         /// <see cref="ConfigurationBuilder.DataStore"/> in the configuration.
         /// </summary>
         /// <returns>a configuration builder</returns>
-        /// TODO: SDK-1678: Internal until ready for use.
-        internal static DataSystemModes DataSystem() => new DataSystemModes();
+        public static DataSystemModes DataSystem() => new DataSystemModes();
     }
 }
diff --git a/pkgs/sdk/server/src/Configuration.cs b/pkgs/sdk/server/src/Configuration.cs
index 90eeb742..90774284 100644
--- a/pkgs/sdk/server/src/Configuration.cs
+++ b/pkgs/sdk/server/src/Configuration.cs
@@ -124,8 +124,7 @@ public class Configuration
         /// It is not suitable for production usage. Do not use it. You have been warned.
         /// </para>
         /// </summary>
-        /// TODO: SDK-1678: Internal until ready for use.
-        internal DataSystemBuilder DataSystem { get; }
+        public DataSystemBuilder DataSystem { get; }
 
         #endregion
 
diff --git a/pkgs/sdk/server/src/ConfigurationBuilder.cs b/pkgs/sdk/server/src/ConfigurationBuilder.cs
index 6514824a..bf5936a2 100644
--- a/pkgs/sdk/server/src/ConfigurationBuilder.cs
+++ b/pkgs/sdk/server/src/ConfigurationBuilder.cs
@@ -420,8 +420,7 @@ public ConfigurationBuilder WrapperInfo(WrapperInfoBuilder wrapperInfo)
         /// </remarks>
         /// <param name="dataSystemBuilder">the data system builder</param>
         /// <returns>the same builder</returns>
-        /// TODO: SDK-1678: Internal until ready for use.
-        internal ConfigurationBuilder DataSystem(DataSystemBuilder dataSystemBuilder)
+        public ConfigurationBuilder DataSystem(DataSystemBuilder dataSystemBuilder)
         {
             _dataSystem = dataSystemBuilder;
             return this;
diff --git a/pkgs/sdk/server/src/Integrations/DataSystemBuilder.cs b/pkgs/sdk/server/src/Integrations/DataSystemBuilder.cs
index 52bb8fd3..5078e135 100644
--- a/pkgs/sdk/server/src/Integrations/DataSystemBuilder.cs
+++ b/pkgs/sdk/server/src/Integrations/DataSystemBuilder.cs
@@ -11,10 +11,8 @@ namespace LaunchDarkly.Sdk.Server.Integrations
     /// It is not suitable for production usage. Do not use it. You have been warned.
     /// </para>
     /// </summary>
-    internal sealed class DataSystemBuilder
+    public sealed class DataSystemBuilder
     {
-        // TODO: SDK-1678: Internal until ready for use.
-
         private readonly List<IComponentConfigurer<IDataSource>> _initializers =
             new List<IComponentConfigurer<IDataSource>>();
 
@@ -89,6 +87,16 @@ public DataSystemBuilder FDv1FallbackSynchronizer(IComponentConfigurer<IDataSour
             return this;
         }
 
+        /// <summary>
+        /// Configures the persistent data store.
+        /// </summary>
+        /// <param name="persistentStore">the persistent data store</param>
+        /// <param name="mode">the mode for the persistent data store</param>
+        /// <returns>a reference to the builder</returns>
+        /// <remarks>
+        /// The SDK will use the persistent data store to store feature flag data.
+        /// </remarks>
+        /// <seealso cref="DataSystemConfiguration.DataStoreMode"/>
         public DataSystemBuilder PersistentStore(IComponentConfigurer<IDataStore> persistentStore,
             DataSystemConfiguration.DataStoreMode mode)
         {
diff --git a/pkgs/sdk/server/src/Integrations/DataSystemComponents.cs b/pkgs/sdk/server/src/Integrations/DataSystemComponents.cs
index 3981155e..aeeda4d1 100644
--- a/pkgs/sdk/server/src/Integrations/DataSystemComponents.cs
+++ b/pkgs/sdk/server/src/Integrations/DataSystemComponents.cs
@@ -10,9 +10,8 @@ namespace LaunchDarkly.Sdk.Server.Integrations
     /// It is not suitable for production usage. Do not use it. You have been warned.
     /// </para>
     /// </summary>
-    internal static class DataSystemComponents
+    public static class DataSystemComponents
     {
-        // TODO: SDK-1678: Internal until ready for use.
         
         /// <summary>
         /// Get a builder for a polling data source.
diff --git a/pkgs/sdk/server/src/Integrations/DataSystemModes.cs b/pkgs/sdk/server/src/Integrations/DataSystemModes.cs
index 7443c668..47eb924d 100644
--- a/pkgs/sdk/server/src/Integrations/DataSystemModes.cs
+++ b/pkgs/sdk/server/src/Integrations/DataSystemModes.cs
@@ -9,11 +9,10 @@ namespace LaunchDarkly.Sdk.Server.Integrations
     /// It is not suitable for production usage. Do not use it. You have been warned.
     /// </para>
     /// </summary>
-    internal sealed class DataSystemModes
+    public sealed class DataSystemModes
     {
         // This implementation is non-static to allow for easy usage with "Components".
         // Where we can return an instance of this object, and the user can chain into their desired configuration.
-        // TODO: SDK-1678: Internal until ready for use.
 
         /// <summary>
         /// Configure's LaunchDarkly's recommended flag data acquisition strategy.
diff --git a/pkgs/sdk/server/src/Integrations/FDv2PollingDataSourceBuilder.cs b/pkgs/sdk/server/src/Integrations/FDv2PollingDataSourceBuilder.cs
index 150b0511..8e21d006 100644
--- a/pkgs/sdk/server/src/Integrations/FDv2PollingDataSourceBuilder.cs
+++ b/pkgs/sdk/server/src/Integrations/FDv2PollingDataSourceBuilder.cs
@@ -25,10 +25,8 @@ namespace LaunchDarkly.Sdk.Server.Integrations
     ///         .FDv1FallbackSynchronizer(DataSystemComponents.FDv1Polling()));
     /// </code>
     /// </example>
-    internal sealed class FDv2PollingDataSourceBuilder : IComponentConfigurer<IDataSource>, IDiagnosticDescription
+    public sealed class FDv2PollingDataSourceBuilder : IComponentConfigurer<IDataSource>, IDiagnosticDescription
     {
-        // TODO: SDK-1678: Internal until ready for use.
-
         /// <summary>
         /// The default value for <see cref="PollInterval(TimeSpan)"/>: 30 seconds.
         /// </summary>
diff --git a/pkgs/sdk/server/src/Integrations/FDv2StreamingDataSourceBuilder.cs b/pkgs/sdk/server/src/Integrations/FDv2StreamingDataSourceBuilder.cs
index cf11de27..5e20f58d 100644
--- a/pkgs/sdk/server/src/Integrations/FDv2StreamingDataSourceBuilder.cs
+++ b/pkgs/sdk/server/src/Integrations/FDv2StreamingDataSourceBuilder.cs
@@ -25,10 +25,8 @@ namespace LaunchDarkly.Sdk.Server.Integrations
     ///         .FDv1FallbackSynchronizer(DataSystemComponents.FDv1Polling()));
     /// </code>
     /// </example>
-    internal sealed class FDv2StreamingDataSourceBuilder : IComponentConfigurer<IDataSource>, IDiagnosticDescription
+    public sealed class FDv2StreamingDataSourceBuilder : IComponentConfigurer<IDataSource>, IDiagnosticDescription
     {
-        // TODO: SDK-1678: Internal until ready for use.
-
         /// <summary>
         /// The default value for <see cref="InitialReconnectDelay(TimeSpan)"/>: 1000 milliseconds.
         /// </summary>
@@ -92,7 +90,8 @@ public IDataSource Build(LdClientContext context)
         public LdValue DescribeConfiguration(LdClientContext context) =>
             LdValue.BuildObject()
                 .WithStreamingProperties(
-                    StandardEndpoints.IsCustomUri(_serviceEndpointsOverride ?? context.ServiceEndpoints, e => e.StreamingBaseUri),
+                    StandardEndpoints.IsCustomUri(_serviceEndpointsOverride ?? context.ServiceEndpoints,
+                        e => e.StreamingBaseUri),
                     false,
                     _initialReconnectDelay
                 )
diff --git a/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj b/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
index 67102b1f..f5000931 100644
--- a/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
+++ b/pkgs/sdk/server/src/LaunchDarkly.ServerSdk.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <!--x-release-please-start-version-->
-    <Version>8.10.4</Version>
+    <Version>8.11.0-beta.1</Version>
     <!--x-release-please-end-->
     <!-- The BUILDFRAMEWORKS variable allows us to override the target frameworks with a
          single framework that we are testing; this allows us to test with older SDK
diff --git a/pkgs/sdk/server/src/Subsystems/DataSystemConfiguration.cs b/pkgs/sdk/server/src/Subsystems/DataSystemConfiguration.cs
index 1f030b48..41ba4a50 100644
--- a/pkgs/sdk/server/src/Subsystems/DataSystemConfiguration.cs
+++ b/pkgs/sdk/server/src/Subsystems/DataSystemConfiguration.cs
@@ -9,10 +9,8 @@ namespace LaunchDarkly.Sdk.Server.Subsystems
     /// It is not suitable for production usage. Do not use it. You have been warned.
     /// </para>
     /// </summary>
-    internal sealed class DataSystemConfiguration
+    public sealed class DataSystemConfiguration
     {
-        // TODO: SDK-1678: Internal until ready for use.
-
         /// <summary>
         /// The persistent data store mode.
         /// </summary>
diff --git a/pkgs/sdk/server/src/Subsystems/ISelectorSource.cs b/pkgs/sdk/server/src/Subsystems/ISelectorSource.cs
index 0429a755..b371e3f6 100644
--- a/pkgs/sdk/server/src/Subsystems/ISelectorSource.cs
+++ b/pkgs/sdk/server/src/Subsystems/ISelectorSource.cs
@@ -3,10 +3,8 @@ namespace LaunchDarkly.Sdk.Server.Subsystems
     /// <summary>
     /// Interface for a selector source. Selectors are used to identify versioned payloads.
     /// </summary>
-    internal interface ISelectorSource
+    public interface ISelectorSource
     {
-        // TODO: SDK-1678: Internal until ready for use.
-
         /// <summary>
         /// Get the current selector.
         /// </summary>
diff --git a/pkgs/sdk/server/src/Subsystems/LdClientContext.cs b/pkgs/sdk/server/src/Subsystems/LdClientContext.cs
index e87207fd..5ec94502 100644
--- a/pkgs/sdk/server/src/Subsystems/LdClientContext.cs
+++ b/pkgs/sdk/server/src/Subsystems/LdClientContext.cs
@@ -102,8 +102,7 @@ public sealed class LdClientContext
         /// <summary>
         /// The configured selector source.
         /// </summary>
-        /// TODO: SDK-1678: Internal until ready for use.
-        internal ISelectorSource SelectorSource { get; }
+        public ISelectorSource SelectorSource { get; }
 
         /// <summary>
         /// Constructs a new instance with only the public properties.
diff --git a/pkgs/sdk/server/test/Internal/FDv2DataSources/FDv2DataSourceTest.cs b/pkgs/sdk/server/test/Internal/FDv2DataSources/FDv2DataSourceTest.cs
index b512a4e3..356a1a20 100644
--- a/pkgs/sdk/server/test/Internal/FDv2DataSources/FDv2DataSourceTest.cs
+++ b/pkgs/sdk/server/test/Internal/FDv2DataSources/FDv2DataSourceTest.cs
@@ -162,8 +162,7 @@ public async Task FirstInitializerFailsSecondInitializerSucceedsWithSelectorSwit
             Assert.Equal(DataSourceState.Valid, statusUpdates[4].State);
 
             // Verify that the data source is initialized
-            // TODO: uncomment this check once Initialized is implemented
-            // Assert.True(dataSource.Initialized);
+            Assert.True(dataSource.Initialized);
 
             // Verify that Apply was called twice: once for second initializer, once for synchronizer
             // Verify the first Apply call was with second initializer dummy data
@@ -330,8 +329,7 @@ public async Task FirstInitializerFailsSecondInitializerSucceedsWithoutSelectorS
             Assert.Equal(DataSourceState.Valid, statusUpdates[6].State);
 
             // Verify that the data source is initialized
-            // TODO: uncomment this check once Initialized is implemented
-            // Assert.True(dataSource.Initialized);
+            Assert.True(dataSource.Initialized);
 
             // Verify that Apply was called twice: once for second initializer, once for synchronizer
             // Verify the first Apply call was with second initializer dummy data
@@ -595,8 +593,7 @@ public async Task AllInitializersFailSwitchesToSynchronizers()
             Assert.Equal(DataSourceState.Valid, statusUpdates[4].State);
 
             // Verify that the data source is initialized
-            // TODO: uncomment this check once Initialized is implemented
-            // Assert.True(dataSource.Initialized);
+            Assert.True(dataSource.Initialized);
 
             // Verify that Apply was called once with synchronizer dummy data
             var changeSet = capturingSink.Applies.ExpectValue(TimeSpan.FromSeconds(1));