Add runtime metrics to cartservice (#393)

Author: cijothomas

src/cartservice/src/Startup.cs

@@ -8,6 +8,7 @@
 using Microsoft.Extensions.Hosting;
 using cartservice.cartstore;
 using cartservice.services;
+using OpenTelemetry.Metrics;
 using OpenTelemetry.Trace;
 
 namespace cartservice;
@@ -49,6 +50,10 @@ public void ConfigureServices(IServiceCollection services)
             .AddHttpClientInstrumentation()
             .AddOtlpExporter());
 
+            services.AddOpenTelemetryMetrics(builder =>
+                builder.AddRuntimeInstrumentation()
+                       .AddOtlpExporter());
+
         services.AddGrpc();
         services.AddGrpcHealthChecks()
             .AddCheck("Sample", () => HealthCheckResult.Healthy());

src/cartservice/src/cartservice.csproj

@@ -14,6 +14,7 @@
     <PackageReference Include="OpenTelemetry.Instrumentation.GrpcNetClient" Version="1.0.0-rc9.4" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.0.0-rc9.4" />
     <PackageReference Include="OpenTelemetry.Instrumentation.StackExchangeRedis" Version="1.0.0-rc9.6" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Runtime" Version="1.0.0" />
   </ItemGroup>
 
   <ItemGroup>