From f4dddbe7dac864a6e8ab2be149200b066f2ccc4d Mon Sep 17 00:00:00 2001
From: Cijo Thomas <cithomas@microsoft.com>
Date: Tue, 28 Jun 2022 06:08:46 -0700
Subject: [PATCH] Add runtime metrics to example aspnet core app (#3408)

---
 examples/AspNetCore/Examples.AspNetCore.csproj | 1 +
 examples/AspNetCore/Program.cs                 | 9 +++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/examples/AspNetCore/Examples.AspNetCore.csproj b/examples/AspNetCore/Examples.AspNetCore.csproj
index a6ce0375535..d92150ac7f8 100644
--- a/examples/AspNetCore/Examples.AspNetCore.csproj
+++ b/examples/AspNetCore/Examples.AspNetCore.csproj
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Swashbuckle.AspNetCore" Version="$(SwashbuckleAspNetCorePkgVer)" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Runtime" Version="$(RuntimeInstrumentationPkgVer)" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/examples/AspNetCore/Program.cs b/examples/AspNetCore/Program.cs
index 0ee7a24c22a..a0bf9e0f3f7 100644
--- a/examples/AspNetCore/Program.cs
+++ b/examples/AspNetCore/Program.cs
@@ -113,13 +113,16 @@
 });
 
 // Metrics
+
+var metricsExporter = builder.Configuration.GetValue<string>("UseMetricsExporter").ToLowerInvariant();
+
 builder.Services.AddOpenTelemetryMetrics(options =>
 {
     options.ConfigureResource(configureResource)
+        .AddRuntimeMetrics()
         .AddHttpClientInstrumentation()
         .AddAspNetCoreInstrumentation();
 
-    var metricsExporter = builder.Configuration.GetValue<string>("UseMetricsExporter").ToLowerInvariant();
     switch (metricsExporter)
     {
         case "prometheus":
@@ -160,9 +163,7 @@
 
 app.MapControllers();
 
-var metricsExporter = builder.Configuration.GetValue<string>("UseMetricsExporter").ToLowerInvariant();
-
-if (metricsExporter == "prometheus")
+if (metricsExporter.Equals("prometheus", StringComparison.OrdinalIgnoreCase))
 {
     app.UseOpenTelemetryPrometheusScrapingEndpoint();
 }