🌐 End-to-End CI/CD AWS Lambda Deployment Pipeline (with IaC)

.github/workflows/deploy.yaml

@@ -0,0 +1,45 @@
+name: Deploy to AWS Lambda
+
+on:
+  push:
+    branches:
+      - 'main'
+      - 'master'
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Install dependencies
+        run: dotnet restore ./ChauMundo/ChauMundo.csproj
+
+      - name: Build project
+        run: dotnet publish ./ChauMundo/ChauMundo.csproj -c Release -o ./publish
+
+      - name: Zip Lambda package
+        run: |
+          cd publish
+          zip -r ../my-lambda.zip .
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: us-east-1
+
+      - name: Upload to S3
+        run: aws s3 cp my-lambda.zip s3://${{ secrets.S3_BUCKET_PREFIX }}-dotnetcodebucket/my-lambda.zip
+
+      - name: Update Lambda function code
+        run: |
+          aws lambda update-function-code --function-name aws-lambda-dotnet-code --s3-bucket ${{ secrets.S3_BUCKET_PREFIX }}-dotnetcodebucket --s3-key my-lambda.zip

ChauMundo/ChauMundo.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -9,6 +9,11 @@
 
   <ItemGroup>
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.7" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+    <PackageReference Include="Amazon.Lambda.AspNetCoreServer" Version="9.0.0" />
+    <PackageReference Include="Amazon.Lambda.AspNetCoreServer.Hosting" Version="1.7.0" />
+    <PackageReference Include="Amazon.Lambda.Serialization.SystemTextJson" Version="2.4.3" />
   </ItemGroup>
 
 </Project>

ChauMundo/ChauMundo.http

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+@ChauMundo_HostAddress = http://localhost:5133
+
+GET {{ChauMundo_HostAddress}}/hello/
+Accept: application/json
+
+###

ChauMundo/LambdaEntryPoint.cs

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+using Amazon.Lambda.APIGatewayEvents;
+using Amazon.Lambda.AspNetCoreServer;
+using Amazon.Lambda.AspNetCoreServer.Internal;
+using Amazon.Lambda.Core;
+
+namespace ChauMundo
+{
+    public class LambdaEntryPoint : APIGatewayHttpApiV2ProxyFunction
+    {
+        protected override void Init(IWebHostBuilder builder)
+        {
+            builder
+                .ConfigureLogging(logging =>
+                {
+                    logging.ClearProviders();
+                    logging.AddConsole();
+                })
+                .UseStartup<Startup>();
+        }
+    }
+}

ChauMundo/Program.cs

@@ -1,21 +1,26 @@
-using System.Configuration;
-using ChauMundo.Printers;
+using ChauMundo.Printers;
 
 namespace ChauMundo
 {
     internal class Program
     {
-        static string? Message = null;
-        static void Main(string[] args)
+        //static string? Message = null;
+        public static void Main(string[] args)
         {
-            Message = ConfigurationManager.AppSettings[nameof(Message)];
-            PrintMessage(new DebugPrinter(), Message ?? "Default message");
-            Console.ReadLine();
+            //Message = ConfigurationManager.AppSettings[nameof(Message)];
+            //PrintMessage(new DebugPrinter(), Message ?? "Default message");
+
+            // Start the web application
+            CreateHostBuilder(args).Build().Run();
         }
-        static void PrintMessage(IPrinter Printer, 
-            string Message)
+
+        public static void PrintMessage(IPrinter Printer, string Message)
         {
             Printer.Print(Message);
         }
+
+        private static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); });
     }
-}
+}

ChauMundo/Properties/launchSettings.json

@@ -0,0 +1,41 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:23440",
+      "sslPort": 44341
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "http://localhost:5133",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7271;http://localhost:5133",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

ChauMundo/Startup.cs

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+using ChauMundo.Printers;
+
+namespace ChauMundo
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddEndpointsApiExplorer();
+            services.AddSwaggerGen();
+        }
+
+        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+                app.UseSwagger();
+                app.UseSwaggerUI();
+            }
+
+            app.UseHttpsRedirection();
+
+            app.UseRouting();
+
+            app.UseEndpoints(endpoints =>
+            {
+                endpoints.MapGet("/hello", () =>
+                {
+                    string? message = Configuration["Message"];
+                    Program.PrintMessage(new DebugPrinter(), message ?? "Default message");
+                    return Results.Ok("Message printed to debug output");
+                });
+            });
+        }
+    }
+}

ChauMundo/appsettings.Development.json

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+{
+  "Message": "Hello from DEV appsettings!",
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

ChauMundo/appsettings.json

@@ -0,0 +1,10 @@
+{
+  "Message": "Hello from PROD appsettings!",
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}