.Net: Remove Kernel.Builder (#3180)

#3169 
Use `new KernelBuilder()` instead of `Kernel.Builder`

---------

Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>
Co-authored-by: Roger Barreto <19890735+RogerBarreto@users.noreply.github.com>

dotnet/samples/KernelSyntaxExamples/Example06_TemplateLanguage.cs

@@ -28,7 +28,7 @@ public static async Task RunAsync()
             return;
         }
 
-        IKernel kernel = Kernel.Builder
+        IKernel kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithOpenAIChatCompletionService(
                 modelId: openAIModelId,

dotnet/samples/KernelSyntaxExamples/Example08_RetryHandler.cs

@@ -75,7 +75,7 @@ private static async Task CustomHandlerAsync()
 
     private static KernelBuilder InitializeKernelBuilder()
     {
-        return Kernel.Builder
+        return new KernelBuilder()
                     .WithLoggerFactory(InfoLogger.LoggerFactory)
                     // OpenAI settings - you can set the OpenAI.ApiKey to an invalid value to see the retry policy in play
                     .WithOpenAIChatCompletionService(TestConfiguration.OpenAI.ChatModelId, "BAD_KEY");

dotnet/samples/KernelSyntaxExamples/Example09_FunctionTypes.cs

@@ -15,7 +15,7 @@ public static async Task RunAsync()
     {
         Console.WriteLine("======== Native function types ========");
 
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithOpenAIChatCompletionService(TestConfiguration.OpenAI.ChatModelId, TestConfiguration.OpenAI.ApiKey)
             .Build();

dotnet/samples/KernelSyntaxExamples/Example10_DescribeAllPluginsAndFunctions.cs

@@ -20,7 +20,7 @@ public static Task RunAsync()
     {
         Console.WriteLine("======== Describe all plugins and functions ========");
 
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithOpenAIChatCompletionService(
                 modelId: TestConfiguration.OpenAI.ChatModelId,
                 apiKey: TestConfiguration.OpenAI.ApiKey)

dotnet/samples/KernelSyntaxExamples/Example11_WebSearchQueries.cs

@@ -13,7 +13,7 @@ public static async Task RunAsync()
     {
         Console.WriteLine("======== WebSearchQueries ========");
 
-        IKernel kernel = Kernel.Builder.WithLoggerFactory(ConsoleLogger.LoggerFactory).Build();
+        IKernel kernel = new KernelBuilder().WithLoggerFactory(ConsoleLogger.LoggerFactory).Build();
 
         // Load native plugins
         var plugin = new SearchUrlPlugin();

dotnet/samples/KernelSyntaxExamples/Example13_ConversationSummaryPlugin.cs

@@ -177,7 +177,7 @@ private static async Task GetConversationTopicsAsync()
 
     private static IKernel InitializeKernel()
     {
-        IKernel kernel = Kernel.Builder
+        IKernel kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithAzureChatCompletionService(
                 TestConfiguration.AzureOpenAI.ChatDeploymentName,

dotnet/samples/KernelSyntaxExamples/Example15_TextMemoryPlugin.cs

@@ -141,7 +141,7 @@ private static IMemoryStore CreateSampleKustoMemoryStore()
 
     private static async Task RunWithStoreAsync(IMemoryStore memoryStore, CancellationToken cancellationToken)
     {
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithOpenAIChatCompletionService(TestConfiguration.OpenAI.ChatModelId, TestConfiguration.OpenAI.ApiKey)
             .WithOpenAITextEmbeddingGenerationService(TestConfiguration.OpenAI.EmbeddingModelId, TestConfiguration.OpenAI.ApiKey)

dotnet/samples/KernelSyntaxExamples/Example40_DIContainer.cs

@@ -44,7 +44,7 @@ private static async Task UseKernelInDIPowerAppAsync()
         //Registering Kernel
         collection.AddTransient<IKernel>((serviceProvider) =>
         {
-            return Kernel.Builder
+            return new KernelBuilder()
             .WithLoggerFactory(serviceProvider.GetRequiredService<ILoggerFactory>())
             .WithOpenAITextCompletionService(TestConfiguration.OpenAI.ModelId, TestConfiguration.OpenAI.ApiKey)
             .Build();

dotnet/samples/KernelSyntaxExamples/Example41_HttpClientUsage.cs

@@ -32,7 +32,7 @@ public static Task RunAsync()
     /// </summary>
     private static void UseDefaultHttpClient()
     {
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithOpenAIChatCompletionService(
                 modelId: TestConfiguration.OpenAI.ChatModelId,
                 apiKey: TestConfiguration.OpenAI.ApiKey) // If you need to use the default HttpClient from the SK SDK, simply omit the argument for the httpMessageInvoker parameter.
@@ -47,7 +47,7 @@ private static void UseCustomHttpClient()
         using var httpClient = new HttpClient();
 
         // If you need to use a custom HttpClient, simply pass it as an argument for the httpClient parameter.
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithOpenAIChatCompletionService(
                 modelId: TestConfiguration.OpenAI.ModelId,
                 apiKey: TestConfiguration.OpenAI.ApiKey,
@@ -68,7 +68,7 @@ private static void UseBasicRegistrationWithHttpClientFactory()
         {
             var factory = sp.GetRequiredService<IHttpClientFactory>();
 
-            var kernel = Kernel.Builder
+            var kernel = new KernelBuilder()
             .WithOpenAIChatCompletionService(
                 modelId: TestConfiguration.OpenAI.ChatModelId,
                 apiKey: TestConfiguration.OpenAI.ApiKey,
@@ -99,7 +99,7 @@ private static void UseNamedRegistrationWitHttpClientFactory()
         {
             var factory = sp.GetRequiredService<IHttpClientFactory>();
 
-            var kernel = Kernel.Builder
+            var kernel = new KernelBuilder()
             .WithOpenAIChatCompletionService(
                 modelId: TestConfiguration.OpenAI.ChatModelId,
                 apiKey: TestConfiguration.OpenAI.ApiKey,

dotnet/samples/KernelSyntaxExamples/Example42_KernelBuilder.cs

@@ -2,7 +2,7 @@
 
 // ==========================================================================================================
 // The easier way to instantiate the Semantic Kernel is to use KernelBuilder.
-// You can access the builder using either Kernel.Builder or KernelBuilder.
+// You can access the builder using new KernelBuilder().
 
 #pragma warning disable CA1852
 
@@ -39,20 +39,20 @@ public static Task RunAsync()
         string azureOpenAIEmbeddingDeployment = TestConfiguration.AzureOpenAIEmbeddings.DeploymentName;
 
 #pragma warning disable CA1852 // Seal internal types
-        IKernel kernel1 = Kernel.Builder.Build();
+        IKernel kernel1 = new KernelBuilder().Build();
 #pragma warning restore CA1852 // Seal internal types
 
-        IKernel kernel2 = Kernel.Builder.Build();
+        IKernel kernel2 = new KernelBuilder().Build();
 
         // ==========================================================================================================
-        // Kernel.Builder returns a new builder instance, in case you want to configure the builder differently.
+        // new KernelBuilder() returns a new builder instance, in case you want to configure the builder differently.
         // The following are 3 distinct builder instances.
 
         var builder1 = new KernelBuilder();
 
-        var builder2 = Kernel.Builder;
+        var builder2 = new KernelBuilder();
 
-        var builder3 = Kernel.Builder;
+        var builder3 = new KernelBuilder();
 
         // ==========================================================================================================
         // A builder instance can create multiple kernel instances, e.g. in case you need
@@ -108,7 +108,7 @@ public static Task RunAsync()
         // ==========================================================================================================
         // The AI services are defined with the builder
 
-        var kernel7 = Kernel.Builder
+        var kernel7 = new KernelBuilder()
             .WithAzureChatCompletionService(
                 deploymentName: azureOpenAIChatCompletionDeployment,
                 endpoint: azureOpenAIEndpoint,
@@ -121,7 +121,7 @@ public static Task RunAsync()
         // The default behavior can be configured or a custom retry handler can be injected that will apply to all
         // AI requests (when using the kernel).
 
-        var kernel8 = Kernel.Builder.WithRetryBasic(
+        var kernel8 = new KernelBuilder().WithRetryBasic(
             new BasicRetryConfig
             {
                 MaxRetryCount = 3,
@@ -147,11 +147,11 @@ public static Task RunAsync()
                 (ex, timespan, retryCount, _)
                     => logger?.LogWarning(ex, "Error executing action [attempt {RetryCount} of 3], pausing {PausingMilliseconds}ms", retryCount, timespan.TotalMilliseconds));
 
-        var kernel9 = Kernel.Builder.WithHttpHandlerFactory(new PollyHttpRetryHandlerFactory(retryThreeTimesPolicy)).Build();
+        var kernel9 = new KernelBuilder().WithHttpHandlerFactory(new PollyHttpRetryHandlerFactory(retryThreeTimesPolicy)).Build();
 
-        var kernel10 = Kernel.Builder.WithHttpHandlerFactory(new PollyRetryThreeTimesFactory()).Build();
+        var kernel10 = new KernelBuilder().WithHttpHandlerFactory(new PollyRetryThreeTimesFactory()).Build();
 
-        var kernel11 = Kernel.Builder.WithHttpHandlerFactory(new MyCustomHandlerFactory()).Build();
+        var kernel11 = new KernelBuilder().WithHttpHandlerFactory(new MyCustomHandlerFactory()).Build();
 
         return Task.CompletedTask;
     }

dotnet/samples/KernelSyntaxExamples/Example52_ApimAuth.cs

@@ -59,7 +59,7 @@ public static async Task RunAsync()
                 .AddConsole();
         });
 
-        var kernel = Kernel.Builder
+        var kernel = new KernelBuilder()
             .WithLoggerFactory(loggerFactory)
             .WithAIService<IChatCompletion>(TestConfiguration.AzureOpenAI.ChatDeploymentName, (loggerFactory) =>
                 new AzureChatCompletion(TestConfiguration.AzureOpenAI.ChatDeploymentName, openAIClient, loggerFactory))

dotnet/samples/KernelSyntaxExamples/Example56_TemplateNativeFunctionsWithMultipleArguments.cs

@@ -30,7 +30,7 @@ public static async Task RunAsync()
             return;
         }
 
-        IKernel kernel = Kernel.Builder
+        IKernel kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithAzureChatCompletionService(
                 deploymentName: deploymentName,

dotnet/samples/KernelSyntaxExamples/Example58_ConfigureRequestSettings.cs

@@ -29,7 +29,7 @@ public static async Task RunAsync()
             return;
         }
 
-        IKernel kernel = Kernel.Builder
+        IKernel kernel = new KernelBuilder()
             .WithLoggerFactory(ConsoleLogger.LoggerFactory)
             .WithAzureChatCompletionService(
                 deploymentName: chatDeploymentName,

dotnet/src/Connectors/Connectors.Memory.Chroma/README.md

@@ -25,7 +25,7 @@ const string endpoint = "http://localhost:8000";
 
 ChromaMemoryStore memoryStore = new(endpoint);
 
-IKernel kernel = Kernel.Builder
+IKernel kernel = new KernelBuilder()
     .WithLogger(logger)
     .WithOpenAITextEmbeddingGenerationService("text-embedding-ada-002", "OPENAI_API_KEY")
     .WithMemoryStorage(memoryStore)

dotnet/src/Connectors/Connectors.Memory.Kusto/README.md

@@ -14,7 +14,7 @@ using Kusto.Data;
 var connectionString = new KustoConnectionStringBuilder("https://kvc123.eastus.kusto.windows.net").WithAadUserPromptAuthentication();
 KustoMemoryStore memoryStore = new(connectionString, "MyDatabase");
 
-IKernel kernel = Kernel.Builder
+IKernel kernel = new KernelBuilder()
     .WithLogger(ConsoleLogger.Log)
     .WithOpenAITextCompletionService(modelId: TestConfiguration.OpenAI.ModelId, apiKey: TestConfiguration.OpenAI.ApiKey)
     .WithOpenAITextEmbeddingGenerationService(modelId: TestConfiguration.OpenAI.EmbeddingModelId,apiKey: TestConfiguration.OpenAI.ApiKey)

dotnet/src/Connectors/Connectors.Memory.Milvus/README.md

@@ -23,7 +23,7 @@ docker-compose up -d
 ```csharp
 using MilvusMemoryStore memoryStore = new("localhost");
 
-IKernel kernel = Kernel.Builder
+IKernel kernel = new KernelBuilder()
     .WithLogger(logger)
     .WithOpenAITextEmbeddingGenerationService("text-embedding-ada-002", "OPENAI_API_KEY")
     .WithMemoryStorage(memoryStore)

dotnet/src/Connectors/Connectors.Memory.Postgres/README.md

@@ -41,7 +41,7 @@ NpgsqlDataSource dataSource = dataSourceBuilder.Build();
 
 PostgresMemoryStore memoryStore = new PostgresMemoryStore(dataSource, vectorSize: 1536/*, schema: "public" */);
 
-IKernel kernel = Kernel.Builder
+IKernel kernel = new KernelBuilder()
     .WithLogger(ConsoleLogger.Logger)
     .WithOpenAITextEmbeddingGenerationService("text-embedding-ada-002", Env.Var("OPENAI_API_KEY"))
     .WithMemoryStorage(memoryStore)

dotnet/src/Connectors/Connectors.Memory.Redis/README.md

@@ -30,7 +30,7 @@ ConnectionMultiplexer connectionMultiplexer = await ConnectionMultiplexer.Connec
 IDatabase database = connectionMultiplexer.GetDatabase();
 RedisMemoryStore memoryStore = new RedisMemoryStore(database, vectorSize: 1536);
 
-IKernel kernel = Kernel.Builder
+IKernel kernel = new KernelBuilder()
     .WithLogger(ConsoleLogger.Logger)
     .WithOpenAITextEmbeddingGenerationService("text-embedding-ada-002", Env.Var("OPENAI_API_KEY"))
     .WithMemoryStorage(memoryStore)

dotnet/src/Connectors/Connectors.UnitTests/OpenAI/AIServicesOpenAIExtensionsTests.cs

@@ -16,7 +16,7 @@ public class AIServicesOpenAIExtensionsTests
     [Fact]
     public void ItSucceedsWhenAddingDifferentServiceTypeWithSameId()
     {
-        KernelBuilder targetBuilder = Kernel.Builder;
+        KernelBuilder targetBuilder = new();
         targetBuilder.WithAzureTextCompletionService("depl", "https://url", "key", "azure");
         targetBuilder.WithAzureTextEmbeddingGenerationService("depl2", "https://url", "key", "azure");
 
@@ -28,7 +28,7 @@ public void ItSucceedsWhenAddingDifferentServiceTypeWithSameId()
     [Fact]
     public void ItTellsIfAServiceIsAvailable()
     {
-        KernelBuilder targetBuilder = Kernel.Builder;
+        KernelBuilder targetBuilder = new();
         targetBuilder.WithAzureTextCompletionService("depl", "https://url", "key", serviceId: "azure");
         targetBuilder.WithOpenAITextCompletionService("model", "apikey", serviceId: "oai");
         targetBuilder.WithAzureTextEmbeddingGenerationService("depl2", "https://url2", "key", serviceId: "azure");
@@ -46,7 +46,7 @@ public void ItTellsIfAServiceIsAvailable()
     public void ItCanOverwriteServices()
     {
         // Arrange
-        KernelBuilder targetBuilder = Kernel.Builder;
+        KernelBuilder targetBuilder = new();
 
         // Act - Assert no exception occurs
         targetBuilder.WithAzureTextCompletionService("dep", "https://localhost", "key", serviceId: "one");

dotnet/src/IntegrationTests/Extensions/KernelSemanticFunctionExtensionsTests.cs

@@ -27,7 +27,7 @@ public KernelSemanticFunctionExtensionsTests(ITestOutputHelper output)
     [Fact]
     public async Task ItSupportsFunctionCallsAsync()
     {
-        var builder = Kernel.Builder
+        var builder = new KernelBuilder()
                 .WithAIService<ITextCompletion>(null, new RedirectTextCompletion(), true)
                 .WithLoggerFactory(this._logger);
         IKernel target = builder.Build();
@@ -46,7 +46,7 @@ public async Task ItSupportsFunctionCallsAsync()
     [Fact]
     public async Task ItSupportsFunctionCallsWithInputAsync()
     {
-        var builder = Kernel.Builder
+        var builder = new KernelBuilder()
                 .WithAIService<ITextCompletion>(null, new RedirectTextCompletion(), true)
                 .WithLoggerFactory(this._logger);
         IKernel target = builder.Build();

dotnet/src/IntegrationTests/Planners/PlanTests.cs

@@ -507,7 +507,7 @@ private IKernel InitializeKernel(bool useEmbeddings = false, bool useChatModel =
         AzureOpenAIConfiguration? azureOpenAIEmbeddingsConfiguration = this._configuration.GetSection("AzureOpenAIEmbeddings").Get<AzureOpenAIConfiguration>();
         Assert.NotNull(azureOpenAIEmbeddingsConfiguration);
 
-        var builder = Kernel.Builder
+        var builder = new KernelBuilder()
             .WithLoggerFactory(this._loggerFactory)
             .WithRetryBasic();
 

dotnet/src/IntegrationTests/Planners/SequentialPlanner/SequentialPlanParserTests.cs

@@ -32,7 +32,7 @@ public void CanCallToPlanFromXml()
         AzureOpenAIConfiguration? azureOpenAIConfiguration = this._configuration.GetSection("AzureOpenAI").Get<AzureOpenAIConfiguration>();
         Assert.NotNull(azureOpenAIConfiguration);
 
-        IKernel kernel = Kernel.Builder
+        IKernel kernel = new KernelBuilder()
             .WithRetryBasic()
             .WithAzureTextCompletionService(
                 deploymentName: azureOpenAIConfiguration.DeploymentName,

dotnet/src/IntegrationTests/Planners/SequentialPlanner/SequentialPlannerTests.cs

@@ -117,7 +117,7 @@ private IKernel InitializeKernel(bool useEmbeddings = false, bool useChatModel =
         AzureOpenAIConfiguration? azureOpenAIEmbeddingsConfiguration = this._configuration.GetSection("AzureOpenAIEmbeddings").Get<AzureOpenAIConfiguration>();
         Assert.NotNull(azureOpenAIEmbeddingsConfiguration);
 
-        var builder = Kernel.Builder.WithLoggerFactory(this._logger);
+        var builder = new KernelBuilder().WithLoggerFactory(this._logger);
         builder.WithRetryBasic();
 
         if (useChatModel)

dotnet/src/IntegrationTests/Planners/StepwisePlanner/StepwisePlannerTests.cs

@@ -147,7 +147,7 @@ private IKernel InitializeKernel(bool useEmbeddings = false, bool useChatModel =
         AzureOpenAIConfiguration? azureOpenAIEmbeddingsConfiguration = this._configuration.GetSection("AzureOpenAIEmbeddings").Get<AzureOpenAIConfiguration>();
         Assert.NotNull(azureOpenAIEmbeddingsConfiguration);
 
-        var builder = Kernel.Builder
+        var builder = new KernelBuilder()
             .WithLoggerFactory(this._loggerFactory)
             .WithRetryBasic();