📊feat: add distributed tracing with OpenTelemetry & Jaeger

- Added OpenTelemetry tracing to the API with automatic instrumentation for
ASP.NET Core, HttpClient and Entity Framework Core.
- Configured OTLP exporter to send traces to a Jaeger container via gRPC,
enabling end-to-end visibility of request flow and database performance.

Author: alysonsz

EventFlow.Presentation/EventFlow.Presentation.csproj

@@ -26,6 +26,11 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.21.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.14.0" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.14.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.14.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.EntityFrameworkCore" Version="1.14.0-beta.2" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.14.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.1.1" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="9.0.0" />

EventFlow.Presentation/Program.cs

@@ -2,6 +2,9 @@
 using EventFlow.Infrastructure.Data;
 using Microsoft.IdentityModel.Tokens;
 using Serilog;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+using OpenTelemetry.Exporter;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -14,6 +17,20 @@
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
 builder.Services.AddDbContextConfig(builder.Configuration, builder.Environment.IsDevelopment());
+
+builder.Services.AddOpenTelemetry()
+    .ConfigureResource(resource => resource
+        .AddService("EventFlow.API"))
+    .WithTracing(tracing => tracing
+        .AddAspNetCoreInstrumentation()
+        .AddHttpClientInstrumentation()
+        .AddEntityFrameworkCoreInstrumentation()
+        .AddOtlpExporter(options =>
+        {
+            options.Endpoint = new Uri("http://eventflow-jaeger:4317");
+            options.Protocol = OtlpExportProtocol.Grpc;
+        }));
+
 builder.Services.AddDependencyInjectionConfig();
 
 builder.Services

docker-compose.yml

@@ -1,6 +1,4 @@
-version: '3.8'
-
-services:
+services:
   eventflow-api:
     container_name: eventflow-api
     image: eventflowapi:latest
@@ -35,7 +33,7 @@ services:
       - ACCEPT_EULA=Y
       - SA_PASSWORD=MyStrongPassword123!
     ports:
-      - "1433:1433"
+      - "1434:1434"
     volumes:
       - eventflow_sql_data:/var/opt/mssql
     healthcheck:
@@ -58,6 +56,17 @@ services:
     networks:
       - eventflow-network
 
+  eventflow-jaeger:
+    image: jaegertracing/all-in-one:latest
+    container_name: eventflow-jaeger
+    environment:
+      - COLLECTOR_OTLP_ENABLED=true
+    ports:
+      - "16686:16686"
+      - "4317:4317"
+    networks:
+      - eventflow-network
+
 volumes:
   eventflow_sql_data:
   eventflow_keys: