Add Prometheus Exporter - HttpListener version (#846)

* AddPrometheusExporter * Update changelog * Update changelog
open-telemetry · Jun 17, 2022 · 74b0ecf · 74b0ecf
1 parent 8d03958
commit 74b0ecf
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -29,6 +29,7 @@ This release is built on top of [OpenTelemetry .NET](https://github.com/open-tel
 - Support for .NET Runtime metrics collection using
   the `OpenTelemetry.Instrumentation.Runtime` package.
 - Support for ASP.NET and HttpClient metrics instrumentations.
+- Support for Prometheus Exporter HttpListener version.
 
 ### Changed
 

diff --git a/src/OpenTelemetry.AutoInstrumentation/Configuration/EnvironmentConfigurationMetricHelper.cs b/src/OpenTelemetry.AutoInstrumentation/Configuration/EnvironmentConfigurationMetricHelper.cs
@@ -66,7 +66,8 @@ private static MeterProviderBuilder SetExporter(this MeterProviderBuilder builde
         switch (settings.MetricExporter)
         {
             case MetricsExporter.Prometheus:
-                throw new NotSupportedException("Prometheus is not supported yet.");
+                builder.AddPrometheusExporter(options => { options.StartHttpListener = true; });
+                break;
             case MetricsExporter.Otlp:
 #if NETCOREAPP3_1
                 if (settings.Http2UnencryptedSupportEnabled)

diff --git a/src/OpenTelemetry.AutoInstrumentation/OpenTelemetry.AutoInstrumentation.csproj b/src/OpenTelemetry.AutoInstrumentation/OpenTelemetry.AutoInstrumentation.csproj
@@ -17,6 +17,7 @@
     <PackageReference Include="OpenTelemetry.Exporter.Zipkin" Version="1.3.0" />
     <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.3.0" />
     <PackageReference Include="OpenTelemetry.Shims.OpenTracing" Version="1.0.0-rc9.4" />
+    <PackageReference Include="OpenTelemetry.Exporter.Prometheus" Version="1.3.0-rc.2" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net462' ">