Added benchmark and test for dispatcher

benchmarkapps/Benchmarks/Benchmarks.csproj

@@ -5,13 +5,15 @@
     <TargetFramework Condition="'$(BenchmarksTargetFramework)' != ''">$(BenchmarksTargetFramework)</TargetFramework>
   </PropertyGroup>
 
-  <!-- These references are used when running locally -->
+   <!--These references are used when running locally--> 
   <ItemGroup Condition="'$(BenchmarksTargetFramework)' == ''">
     <ProjectReference Include="..\..\src\Microsoft.AspNetCore.Routing\Microsoft.AspNetCore.Routing.csproj" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(MicrosoftAspNetCoreServerKestrelPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(MicrosoftExtensionsConfigurationCommandLinePackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="$(MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion)" />
   </ItemGroup>
 
-  <!-- These references are used when running on the Benchmarks Server -->
+   <!--These references are used when running on the Benchmarks Server--> 
   <ItemGroup Condition="'$(BenchmarksTargetFramework)' != ''">
     <PackageReference Include="Microsoft.AspNetCore.App" Version="$(MicrosoftAspNetCoreAppPackageVersion)" />
   </ItemGroup>

benchmarkapps/Benchmarks/Program.cs

@@ -1,6 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 
@@ -16,15 +17,37 @@ namespace Benchmarks
         public static IWebHostBuilder GetWebHostBuilder(string[] args)
         {
             var config = new ConfigurationBuilder()
+                .AddCommandLine(args)
+                .AddEnvironmentVariables(prefix: "RoutingBenchmarks_")
                 .Build();
 
             // Consoler logger has a major impact on perf results, so do not use
             // default builder.
 
-            return new WebHostBuilder()
-                .UseConfiguration(config)
-                .UseKestrel()
-                .UseStartup<Startup>();
+            var webHostBuilder = new WebHostBuilder()
+                    .UseConfiguration(config)
+                    .UseKestrel();
+
+            var scenario = config["scenarios"]?.ToLower();
+            if (scenario == "plaintextdispatcher")
+            {
+                webHostBuilder.UseStartup<StartupUsingDispatcher>();
+                // for testing
+                webHostBuilder.UseSetting("Startup", nameof(StartupUsingDispatcher));
+            }
+            else if (scenario == "plaintextrouting")
+            {
+                webHostBuilder.UseStartup<StartupUsingRouting>();
+                // for testing
+                webHostBuilder.UseSetting("Startup", nameof(StartupUsingRouting));
+            }
+            else
+            {
+                throw new InvalidOperationException(
+                    $"Invalid scenario '{scenario}'. Allowed scenarios are PlaintextDispatcher and PlaintextRouting");
+            }
+
+            return webHostBuilder;
         }
     }
 }

benchmarkapps/Benchmarks/StartupUsingDispatcher.cs

@@ -0,0 +1,50 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Text;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Routing;
+using Microsoft.AspNetCore.Routing.Matchers;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Benchmarks
+{
+    public class StartupUsingDispatcher
+    {
+        private static readonly byte[] _helloWorldPayload = Encoding.UTF8.GetBytes("Hello, World!");
+
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddRouting();
+
+            services.AddDispatcher(options =>
+            {
+                options.DataSources.Add(new DefaultEndpointDataSource(new[]
+                {
+                    new MatcherEndpoint(
+                        invoker: (next) => (httpContext) =>
+                        {
+                            var response = httpContext.Response;
+                            var payloadLength = _helloWorldPayload.Length;
+                            response.StatusCode = 200;
+                            response.ContentType = "text/plain";
+                            response.ContentLength = payloadLength;
+                            return response.Body.WriteAsync(_helloWorldPayload, 0, payloadLength);
+                        },
+                        template: "/plaintext",
+                        values: new { },
+                        order: 0,
+                        metadata: EndpointMetadataCollection.Empty,
+                        displayName: "Plaintext"),
+                }));
+            });
+        }
+
+        public void Configure(IApplicationBuilder app)
+        {
+            app.UseDispatcher();
+
+            app.UseEndpoint();
+        }
+    }
+}

benchmarkapps/Benchmarks/StartupUsingRouting.cs

@@ -8,7 +8,7 @@ using System.Text;
 
 namespace Benchmarks
 {
-    public class Startup
+    public class StartupUsingRouting
     {
         private static readonly byte[] _helloWorldPayload = Encoding.UTF8.GetBytes("Hello, World!");
 

benchmarkapps/Benchmarks/benchmarks.json

@@ -15,5 +15,8 @@
   },
   "PlaintextRouting": {
     "Path": "/plaintext"
+  },
+  "PlaintextDispatcher": {
+    "Path": "/plaintext"
   }
-}
+}

build/dependencies.props

@@ -17,6 +17,8 @@
     <MicrosoftAspNetCoreTestHostPackageVersion>2.2.0-preview1-34326</MicrosoftAspNetCoreTestHostPackageVersion>
     <MicrosoftAspNetCoreTestingPackageVersion>2.2.0-preview1-34326</MicrosoftAspNetCoreTestingPackageVersion>
     <MicrosoftExtensionsConfigurationPackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsConfigurationPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
     <MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>
     <MicrosoftExtensionsDependencyInjectionPackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsDependencyInjectionPackageVersion>
     <MicrosoftExtensionsHashCodeCombinerSourcesPackageVersion>2.2.0-preview1-34326</MicrosoftExtensionsHashCodeCombinerSourcesPackageVersion>

test/Microsoft.AspNetCore.Routing.FunctionalTests/Benchmarks/DispatcherTest.cs

@@ -0,0 +1,60 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NETCOREAPP2_2
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.TestHost;
+using Xunit;
+
+namespace Microsoft.AspNetCore.Routing.FunctionalTests
+{
+    public class DispatcherTest : IDisposable
+    {
+        private readonly HttpClient _client;
+        private readonly TestServer _testServer;
+
+        public DispatcherTest()
+        {
+            // This switch and value are set by benchmark server when running the app for profiling.
+            var args = new[] { "--scenarios", "PlaintextDispatcher" };
+            var webHostBuilder = Benchmarks.Program.GetWebHostBuilder(args);
+
+            // Make sure we are using the right startup
+            var startupName = webHostBuilder.GetSetting("Startup");
+            Assert.Equal(nameof(Benchmarks.StartupUsingDispatcher), startupName);
+
+            _testServer = new TestServer(webHostBuilder);
+            _client = _testServer.CreateClient();
+            _client.BaseAddress = new Uri("http://localhost");
+        }
+
+        [Fact]
+        public async Task RouteEndpoint_ReturnsPlaintextResponse()
+        {
+            // Arrange
+            var expectedContentType = "text/plain";
+            var expectedContent = "Hello, World!";
+
+            // Act
+            var response = await _client.GetAsync("/plaintext");
+
+            // Assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            Assert.NotNull(response.Content);
+            Assert.NotNull(response.Content.Headers.ContentType);
+            Assert.Equal(expectedContentType, response.Content.Headers.ContentType.MediaType);
+            var actualContent = await response.Content.ReadAsStringAsync();
+            Assert.Equal(expectedContent, actualContent);
+        }
+
+        public void Dispose()
+        {
+            _testServer.Dispose();
+            _client.Dispose();
+        }
+    }
+}
+#endif

test/Microsoft.AspNetCore.Routing.FunctionalTests/Benchmarks/RoutingTest.cs

@@ -11,14 +11,21 @@ using Xunit;
 
 namespace Microsoft.AspNetCore.Routing.FunctionalTests
 {
-    public class BenchmarksTest : IDisposable
+    public class RoutingTest : IDisposable
     {
         private readonly HttpClient _client;
         private readonly TestServer _testServer;
 
-        public BenchmarksTest()
+        public RoutingTest()
         {
-            var webHostBuilder = Benchmarks.Program.GetWebHostBuilder(args: null);
+            // This switch and value are set by benchmark server when running the app for profiling.
+            var args = new[] { "--scenarios", "PlaintextRouting" };
+            var webHostBuilder = Benchmarks.Program.GetWebHostBuilder(args);
+
+            // Make sure we are using the right startup
+            var startupName = webHostBuilder.GetSetting("Startup");
+            Assert.Equal(nameof(Benchmarks.StartupUsingRouting), startupName);
+
             _testServer = new TestServer(webHostBuilder);
             _client = _testServer.CreateClient();
             _client.BaseAddress = new Uri("http://localhost");