OpenTelemetry: context propagation and semconv update (#262)

samples/AspNetCoreSseServer/AspNetCoreSseServer.csproj

@@ -12,4 +12,11 @@
     <ProjectReference Include="..\..\src\ModelContextProtocol.AspNetCore\ModelContextProtocol.AspNetCore.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" />
+  </ItemGroup>
+
 </Project>

samples/AspNetCoreSseServer/Program.cs

@@ -1,10 +1,23 @@
 using TestServerWithHosting.Tools;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Trace;
+using OpenTelemetry;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddMcpServer()
     .WithTools<EchoTool>()
     .WithTools<SampleLlmTool>();
 
+builder.Services.AddOpenTelemetry()
+    .WithTracing(b => b.AddSource("*")
+        .AddAspNetCoreInstrumentation()
+        .AddHttpClientInstrumentation())
+    .WithMetrics(b => b.AddMeter("*")
+        .AddAspNetCoreInstrumentation()
+        .AddHttpClientInstrumentation())
+    .WithLogging()
+    .UseOtlpExporter();
+
 var app = builder.Build();
 
 app.MapMcp();

samples/AspNetCoreSseServer/Properties/launchSettings.json

@@ -6,7 +6,8 @@
       "dotnetRunMessages": true,
       "applicationUrl": "http://localhost:3001",
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "OTEL_SERVICE_NAME": "sse-server",
       }
     },
     "https": {
@@ -14,7 +15,8 @@
       "dotnetRunMessages": true,
       "applicationUrl": "https://localhost:7133;http://localhost:3001",
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "OTEL_SERVICE_NAME": "sse-server",
       }
     }
   }