From 10cfe34994576097f16a8329a693ad5c88587e45 Mon Sep 17 00:00:00 2001
From: Cijo Thomas <cithomas@microsoft.com>
Date: Tue, 1 Mar 2022 10:41:08 -0800
Subject: [PATCH] Example app to enable httpclient metrics instrumentation

---
 examples/AspNetCore/Startup.cs                                  | 1 +
 .../Implementation/HttpHandlerMetricsDiagnosticListener.cs      | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/AspNetCore/Startup.cs b/examples/AspNetCore/Startup.cs
index 88199d052d7..9a60cd3b092 100644
--- a/examples/AspNetCore/Startup.cs
+++ b/examples/AspNetCore/Startup.cs
@@ -124,6 +124,7 @@ public void ConfigureServices(IServiceCollection services)
             services.AddOpenTelemetryMetrics(builder =>
             {
                 builder.AddAspNetCoreInstrumentation();
+                builder.AddHttpClientInstrumentation();
 
                 switch (metricsExporter)
                 {
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
index 2fa58e88b1c..44ef0d8d0fb 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
@@ -30,7 +30,7 @@ internal class HttpHandlerMetricsDiagnosticListener : ListenerHandler
         public HttpHandlerMetricsDiagnosticListener(string name, Meter meter)
             : base(name)
         {
-            this.httpClientDuration = meter.CreateHistogram<double>("http.client.duration", "milliseconds", "measure the duration of the outbound HTTP request");
+            this.httpClientDuration = meter.CreateHistogram<double>("http.client.duration", "ms", "measures the duration of the outbound HTTP request");
         }
 
         public override void OnStopActivity(Activity activity, object payload)