Add AOT example

Elasticsearch.sln

@@ -57,6 +57,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests.ClusterLauncher", "te
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "tests\Tests\Tests.csproj", "{6FD804B2-CE80-41CB-A411-2023F34C18FE}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "aot", "examples\aot\aot.csproj", "{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "examples", "examples", "{02EA681E-C7D8-13C7-8484-4AC65E1B71E8}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -103,6 +107,10 @@ Global
 		{6FD804B2-CE80-41CB-A411-2023F34C18FE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6FD804B2-CE80-41CB-A411-2023F34C18FE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6FD804B2-CE80-41CB-A411-2023F34C18FE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -118,6 +126,7 @@ Global
 		{68D1BFDC-F447-4D2C-AF81-537807636610} = {1FE49D14-216A-41EE-A177-E42BFF53E0DC}
 		{F6162603-D134-4121-8106-2BA4DAD7350B} = {362B2776-4B29-46AB-B237-56776B5372B6}
 		{6FD804B2-CE80-41CB-A411-2023F34C18FE} = {362B2776-4B29-46AB-B237-56776B5372B6}
+		{3FA9C99A-7DA0-4DF2-89C0-BDDFC97E2CB7} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {CE74F821-B001-4C69-A58D-CF81F8B0B632}

examples/aot/Program.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Diagnostics;
+using System.Text.Json.Serialization;
+
+using Elastic.Clients.Elasticsearch;
+using Elastic.Clients.Elasticsearch.Serialization;
+using Elastic.Transport;
+using Elastic.Transport.Extensions;
+
+namespace AOT;
+
+public static class Program
+{
+	public static void Main(string[] args)
+	{
+		var nodePool = new SingleNodePool(new Uri("http://localhost:9200"));
+		var settings = new ElasticsearchClientSettings(
+			nodePool,
+			sourceSerializer: (_, settings) =>
+				new DefaultSourceSerializer(settings, UserTypeSerializerContext.Default)
+			)
+			.DefaultMappingFor<Person>(x => x.IndexName("index"));
+
+		var client = new ElasticsearchClient(settings);
+
+		var person = new Person
+		{
+			Id = 1234,
+			FirstName = "Florian",
+			LastName = "Bernd"
+		};
+
+		Trace.Assert(client.Infer.Id(person) == "1234");
+
+		var indexRequest = new IndexRequest<Person>(person);
+		var indexRequestBody = client.ElasticsearchClientSettings.RequestResponseSerializer.SerializeToString(indexRequest);
+		var indexRequest2 = client.ElasticsearchClientSettings.RequestResponseSerializer.Deserialize<IndexRequest<Person>>(indexRequestBody)!;
+
+		Trace.Assert(indexRequest.Document == indexRequest2.Document);
+	}
+}
+
+internal sealed record Person
+{
+	public long? Id { get; init; }
+	public required string FirstName { get; init; }
+	public required string LastName { get; init; }
+	public DateTimeOffset? BirthDate { get; init; }
+}
+
+[JsonSerializable(typeof(Person), GenerationMode = JsonSourceGenerationMode.Default)]
+internal sealed partial class UserTypeSerializerContext :
+	JsonSerializerContext
+{
+}

examples/aot/aot.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+
+    <Nullable>enable</Nullable>
+    <PublishAot>true</PublishAot>
+    <InvariantGlobalization>true</InvariantGlobalization>
+    <TrimmerSingleWarn>false</TrimmerSingleWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Elastic.Clients.Elasticsearch\Elastic.Clients.Elasticsearch.csproj" />
+  </ItemGroup>
+
+</Project>

src/Elastic.Clients.Elasticsearch/Elastic.Clients.Elasticsearch.csproj

@@ -14,7 +14,7 @@
   <PropertyGroup>
     <IsPackable>true</IsPackable>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TargetFrameworks>netstandard2.0;net462;netstandard2.1;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net462;netstandard2.1;net8.0;net9.0</TargetFrameworks>
     <CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Nullable>annotations</Nullable>

src/Elastic.Clients.Elasticsearch/_Shared/Core/Infer/DynamicPropertyAccessor.cs

@@ -50,9 +50,9 @@ internal static class DynamicPropertyAccessor
 
 		// Build compiled getter delegate.
 
-#pragma warning disable IL3050
+#pragma warning disable IL3050, IL2060
 		var getterDelegateFactory = MakeDelegateMethodInfo.MakeGenericMethod(type, getterMethod.ReturnType);
-#pragma warning restore IL3050
+#pragma warning restore IL3050, IL2060
 		var genericGetterDelegate = (Func<object, object>)getterDelegateFactory.Invoke(null, [getterMethod])!;
 
 		return instance => retrieverFunc(genericGetterDelegate, instance);

src/Elastic.Clients.Elasticsearch/_Shared/Core/Infer/Id/IdResolver.cs

@@ -28,7 +28,7 @@ public IdResolver(IElasticsearchClientSettings settings)
 			return null;
 		}
 
-		return Resolve(instance.GetType(), instance);
+		return Resolve(typeof(T), instance);
 	}
 
 	public string? Resolve([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties)] Type type, object instance)

src/Elastic.Clients.Elasticsearch/_Shared/Core/Infer/RoutingResolver.cs

@@ -30,7 +30,7 @@ public RoutingResolver(IElasticsearchClientSettings settings, IdResolver idResol
 			return null;
 		}
 
-		return Resolve(instance.GetType(), instance);
+		return Resolve(typeof(T), instance);
 	}
 
 	public string? Resolve([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties)] Type type, object instance)

src/Playground/Person.cs

@@ -4,6 +4,7 @@
 
 using System.Runtime.Serialization;
 using Elastic.Clients.Elasticsearch;
+using Elastic.Clients.Elasticsearch.QueryDsl;
 
 namespace Playground
 {
@@ -30,6 +31,8 @@ public class Person
 		public string Data { get; init; } = "NOTHING";
 
 		public DateTimeKind Enum { get; init; }
+
+		public Query? Q { get; init; }
 	}
 
 	public class PersonV3

src/Playground/Program.cs

@@ -2,19 +2,107 @@
 // Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information.
 
+using System.Runtime.CompilerServices;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 using Elastic.Clients.Elasticsearch;
+using Elastic.Clients.Elasticsearch.Aggregations;
+using Elastic.Clients.Elasticsearch.Nodes;
+using Elastic.Clients.Elasticsearch.QueryDsl;
+using Elastic.Clients.Elasticsearch.Requests;
+using Elastic.Clients.Elasticsearch.Serialization;
 using Elastic.Transport;
-
+using Elastic.Transport.Extensions;
 using Playground;
 
+RequestConfiguration? globalRequestConfiguration = null;
+ConditionalWeakTable<RequestConfiguration, RequestConfiguration>? globalRequestConfigurations = null;
+
 var settings = new ElasticsearchClientSettings(new Uri("https://primary.es.europe-west3.gcp.cloud.es.io"))
 	.Authentication(new BasicAuthentication("elastic", "Oov35Wtxj5DzpZNzYAzFb0KZ"))
-	.DisableDirectStreaming()
-	.EnableDebugMode(cd =>
+	.OnBeforeRequest(OnBeforeRequest)
+	.EnableDebugMode(cd => Console.WriteLine(cd.DebugInformation));
+void OnBeforeRequest(ElasticsearchClient client, Request request, EndpointPath endpointPath, ref PostData? postData, ref IRequestConfiguration? requestConfiguration)
+{
+	// Each time a request is made, the transport creates a new `BoundConfiguration` for every `IRequestConfiguration`
+	// that is not in the cache (based on reference equality).
+
+	// To prevent frequent allocations of our mutated request configurations (and the secondary allocations for
+	// `BoundConfiguration`), we have to maintain a custom cache that maps every original request configuration to the
+	// mutated one.
+
+	if (requestConfiguration is null)
+	{
+		globalRequestConfiguration = Interlocked.CompareExchange(
+			ref globalRequestConfiguration,
+			new RequestConfiguration
+			{
+				UserAgent = UserAgent.Create("my-custom-user-agent")
+			},
+			null) ?? globalRequestConfiguration;
+
+		requestConfiguration = globalRequestConfiguration;
+		return;
+	}
+
+	if (requestConfiguration is not RequestConfiguration rc)
+	{
+		// Only `RequestConfiguration` (not all implementations of `IRequestConfiguration`) gets cached in the
+		// internal cache.
+		requestConfiguration = MutateRequestConfiguration(requestConfiguration);
+		return;
+	}
+
+	// ReSharper disable InconsistentlySynchronizedField
+
+	var cache = (Interlocked.CompareExchange(
+		ref globalRequestConfigurations,
+		new ConditionalWeakTable<RequestConfiguration, RequestConfiguration>(),
+		null
+	) ?? globalRequestConfigurations);
+
+	if (cache.TryGetValue(rc, out var mutatedRequestConfiguration))
 	{
-		//var request = System.Text.Encoding.Default.GetString(cd.RequestBodyInBytes);
-		Console.WriteLine(cd.DebugInformation);
-	});
+		requestConfiguration = mutatedRequestConfiguration;
+		return;
+	}
+
+	mutatedRequestConfiguration = MutateRequestConfiguration(rc);
+
+#if NET8_0_OR_GREATER
+	cache.TryAdd(rc, mutatedRequestConfiguration);
+#else
+	lock (cache)
+	{
+		cache.Add(rc, mutatedRequestConfiguration);
+	}
+#endif
+
+	// ReSharper restore InconsistentlySynchronizedField
+
+	return;
+
+	RequestConfiguration MutateRequestConfiguration(IRequestConfiguration requestConfiguration)
+	{
+		return new RequestConfiguration(requestConfiguration)
+		{
+			UserAgent = UserAgent.Create("my-custom-user-agent")
+		};
+	}
+}
 
 var client = new ElasticsearchClient(settings);
 
+var s = settings.SourceSerializer.SerializeToString(new Person
+{
+	Q = new Query
+	{
+		MatchAll = new MatchAllQuery()
+	}
+});
+
+await client.ExplainAsync("my-tweet-index", 1);
+await client.DeleteAsync("my-tweet-index", 1);
+
+BulkRequestDescriptor descriptor = new();
+descriptor.Index("indexName");