Update .NET sample

.editorconfig

@@ -4,6 +4,12 @@ root = true
 max_line_length = 100
 indent_size = 2
 
+[*.cs]
+indent_size = 4
+insert_final_newline = true
+end_of_line = crlf
+max_line_length = 180
+
 [*.md]
 max_line_length = 120
 

.github/super-linter.env

@@ -12,6 +12,11 @@ VALIDATE_JAVASCRIPT_STANDARD=false
 # we have many duplicate code in our codebase for demo purposes
 VALIDATE_JSCPD=false
 
+# Avoid redundant work linting C# files
+DOTNET_GENERATE_ASPNET_CERTIFICATE=false
+DOTNET_NOLOGO=true
+NUGET_XMLDOC_MODE=skip
+
 FIX_CSHARP=true
 FIX_ENV=true
 FIX_GO=true

examples/dotnet/Dockerfile

@@ -1,24 +1,20 @@
-FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS base
-WORKDIR /app
-EXPOSE 8083
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+ARG TARGETARCH
+ARG CONFIGURATION=Release
 
-ENV ASPNETCORE_URLS=http://+:8083
+COPY . /source
+WORKDIR /source
 
-USER app
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0 AS build
-ARG configuration=Release
-WORKDIR /src
-COPY ["rolldice.csproj", "/"]
-RUN dotnet restore "/rolldice.csproj"
-COPY . .
-WORKDIR "/src/"
-RUN dotnet build "rolldice.csproj" -c $configuration -o /app/build
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-FROM build AS publish
-ARG configuration=Release
-RUN dotnet publish "rolldice.csproj" -c $configuration -o /app/publish /p:UseAppHost=false
+RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
+    dotnet publish "rolldice.csproj" --arch "${TARGETARCH}" --configuration "${CONFIGURATION}" --output /app /p:UseAppHost=false
 
-FROM base AS final
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS final
 WORKDIR /app
-COPY --from=publish /app/publish .
+EXPOSE 8083
+
+ENV ASPNETCORE_HTTP_PORTS=8083
+
+COPY --from=build /app .
 ENTRYPOINT ["dotnet", "rolldice.dll"]

examples/dotnet/Program.cs

@@ -3,7 +3,6 @@
 using OpenTelemetry.Metrics;
 using OpenTelemetry.Resources;
 using OpenTelemetry.Trace;
-using Microsoft.AspNetCore.Mvc;
 using System.Globalization;
 
 var appBuilder = WebApplication.CreateBuilder(args);
@@ -14,84 +13,82 @@
     serviceVersion: typeof(Program).Assembly.GetName().Version?.ToString() ?? "unknown",
     serviceInstanceId: Environment.MachineName);
 
-// Configure OpenTelemetry tracing & metrics with auto-start using the
-// AddOpenTelemetry extension from OpenTelemetry.Extensions.Hosting.
+const string DefaultEndpoint = "http://localhost:4317";
+
+// Configure OpenTelemetry tracing and metrics with auto-start using the
+// AddOpenTelemetry() extension method from the OpenTelemetry.Extensions.Hosting package.
 appBuilder.Services.AddOpenTelemetry()
     .ConfigureResource(configureResource)
     .WithTracing(builder =>
-    {
-      builder
-          .AddHttpClientInstrumentation()
-          .AddAspNetCoreInstrumentation();
-
-      // Use IConfiguration binding for AspNetCore instrumentation options.
-      appBuilder.Services.Configure<AspNetCoreTraceInstrumentationOptions>(
-          appBuilder.Configuration.GetSection("AspNetCoreInstrumentation"));
-
-      builder.AddOtlpExporter(otlpOptions =>
-      {
-        // Use IConfiguration directly for Otlp exporter endpoint option.
-        otlpOptions.Endpoint = new Uri(appBuilder.Configuration.GetValue(
-              "Otlp:Endpoint", defaultValue: "http://localhost:4317")!);
-      });
+    {
+        builder
+            .AddHttpClientInstrumentation()
+            .AddAspNetCoreInstrumentation();
+
+        // Use IConfiguration binding for AspNetCore instrumentation options.
+        appBuilder.Services.Configure<AspNetCoreTraceInstrumentationOptions>(
+            appBuilder.Configuration.GetSection("AspNetCoreInstrumentation"));
+
+        builder.AddOtlpExporter(otlpOptions =>
+        {
+            // Use IConfiguration directly for OTLP exporter endpoint option.
+            otlpOptions.Endpoint = new Uri(
+                appBuilder.Configuration.GetValue("Otlp:Endpoint", defaultValue: DefaultEndpoint)!);
+        });
     })
     .WithMetrics(builder =>
-    {
-      builder
-          .AddHttpClientInstrumentation()
-          .AddAspNetCoreInstrumentation();
-
-      builder.AddOtlpExporter(otlpOptions =>
-      {
-        // Use IConfiguration directly for Otlp exporter endpoint option.
-        otlpOptions.Endpoint = new Uri(appBuilder.Configuration.GetValue(
-              "Otlp:Endpoint", defaultValue: "http://localhost:4317")!);
-      });
+    {
+        builder
+            .AddHttpClientInstrumentation()
+            .AddAspNetCoreInstrumentation();
+
+        builder.AddOtlpExporter(otlpOptions =>
+        {
+            // Use IConfiguration directly for OTLP exporter endpoint option.
+            otlpOptions.Endpoint = new Uri(
+                appBuilder.Configuration.GetValue("Otlp:Endpoint", defaultValue: DefaultEndpoint)!);
+        });
     });
 
 // Clear default logging providers used by WebApplication host.
 appBuilder.Logging.ClearProviders();
 
 // Configure OpenTelemetry Logging.
 appBuilder.Logging.AddOpenTelemetry(options =>
-{
-  // Note: See appsettings.json Logging:OpenTelemetry section for configuration.
-
-  var resourceBuilder = ResourceBuilder.CreateDefault();
-  configureResource(resourceBuilder);
-  options.SetResourceBuilder(resourceBuilder);
-
-  options.AddOtlpExporter(otlpOptions =>
-  {
-    // Use IConfiguration directly for Otlp exporter endpoint option.
-    otlpOptions.Endpoint = new Uri(appBuilder.Configuration.GetValue(
-          "Otlp:Endpoint", defaultValue: "http://localhost:4317")!);
-  });
+{
+    // See appsettings.json "Logging:OpenTelemetry" section for configuration.
+    var resourceBuilder = ResourceBuilder.CreateDefault();
+    configureResource(resourceBuilder);
+    options.SetResourceBuilder(resourceBuilder);
+
+    options.AddOtlpExporter(otlpOptions =>
+    {
+        // Use IConfiguration directly for OTLP exporter endpoint option.
+        otlpOptions.Endpoint = new Uri(
+            appBuilder.Configuration.GetValue("Otlp:Endpoint", defaultValue: DefaultEndpoint)!);
+    });
 });
 
 var app = appBuilder.Build();
 
-string HandleRollDice([FromServices] ILogger<Program> logger, string? player)
-{
-  var result = RollDice();
-
-  if (string.IsNullOrEmpty(player))
-  {
-    logger.LogInformation("Anonymous player is rolling the dice: {result}", result);
-  }
-  else
-  {
-    logger.LogInformation("{player} is rolling the dice: {result}", player, result);
-  }
-
-  return result.ToString(CultureInfo.InvariantCulture);
-}
+static string HandleRollDice(string? player, ILogger<Program> logger)
+{
+    var result = RollDice();
 
-int RollDice()
-{
-  return Random.Shared.Next(1, 7);
+    if (string.IsNullOrEmpty(player))
+    {
+        logger.LogInformation("Anonymous player is rolling the dice: {result}", result);
+    }
+    else
+    {
+        logger.LogInformation("{player} is rolling the dice: {result}", player, result);
+    }
+
+    return result.ToString(CultureInfo.InvariantCulture);
 }
 
+static int RollDice() => Random.Shared.Next(1, 7);
+
 app.MapGet("/rolldice/{player?}", HandleRollDice);
 
 app.Run();

examples/dotnet/Properties/launchSettings.json

@@ -5,7 +5,7 @@
       "commandName": "Project",
       "dotnetRunMessages": true,
       "launchBrowser": true,
-      "applicationUrl": "http://localhost:8083"
+      "applicationUrl": "http://localhost:8083/rolldice"
     }
   }
 }

examples/dotnet/global.json

@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "allowPrerelease": false
+  }
+}

examples/dotnet/rolldice.csproj

@@ -7,11 +7,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.8.1" />
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.8.1" />
-    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.8.1" />
-    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.8.1" />
-    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.8.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
   </ItemGroup>
 
 </Project>