Adds More Convenient Typed Startup for ASP.NET Core

Author: chrisoverzero

Libraries/src/Amazon.Lambda.AspNetCoreServer/APIGatewayProxyFunction.cs

@@ -22,7 +22,7 @@
 namespace Amazon.Lambda.AspNetCoreServer
 {
     /// <summary>
-    /// ApiGatewayFunction is the base class that is implemented in a ASP.NET Core Web API. The derived class implements
+    /// ApiGatewayProxyFunction is the base class that is implemented in a ASP.NET Core Web API. The derived class implements
     /// the Init method similar to Main function in the ASP.NET Core. The function handler for the Lambda function will point
     /// to this base class FunctionHandlerAsync method.
     /// </summary>

Libraries/src/Amazon.Lambda.AspNetCoreServer/APIGatewayProxyFunction{TStartup}.cs

@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Hosting;
+
+namespace Amazon.Lambda.AspNetCoreServer
+{
+    /// <summary>
+    /// ApiGatewayProxyFunction is the base class that is implemented in a ASP.NET Core Web API. The derived class implements
+    /// the Init method similar to Main function in the ASP.NET Core and provides typed Startup. The function handler for
+    /// the Lambda function will point to this base class FunctionHandlerAsync method.
+    /// </summary>
+    /// <typeparam name ="TStartup">The type containing the startup methods for the application.</typeparam>
+    public abstract class APIGatewayProxyFunction<TStartup> : APIGatewayProxyFunction where TStartup : class
+    {
+        /// <inheritdoc/>
+        protected override IWebHostBuilder CreateWebHostBuilder() =>
+            base.CreateWebHostBuilder().UseStartup<TStartup>();
+    }
+}

Libraries/test/TestWebApp/LambdaFunction.cs

@@ -5,16 +5,15 @@
 
 namespace TestWebApp
 {
-    public class LambdaFunction : APIGatewayProxyFunction
+    public class LambdaFunction : APIGatewayProxyFunction<Startup>
     {
         public const string BinaryContentType = "application/octet-stream";
 
         protected override void Init(IWebHostBuilder builder)
         {
             builder
                 .UseApiGateway()
-                .UseContentRoot(Directory.GetCurrentDirectory())
-                .UseStartup<Startup>();
+                .UseContentRoot(Directory.GetCurrentDirectory());
         }
     }
 }