feat: add open telemetry and jaeger

Add tracing observability

docker-compose.yml

@@ -14,13 +14,16 @@ services:
       - NODE_ENV=development
       - PORT=3000
       - MONGO_URI=mongodb://root:root@mongodb:27017
+      - OTEL_TRACE_EXPORTER_URL=http://otel-collector:4317
+
     ports:
       - 3000:3000
     networks:
       - nest
     depends_on:
       - mongodb
     command: npm run start:dev
+
   mongodb:
     container_name: mongodb
     image: mongo
@@ -34,6 +37,35 @@ services:
       MONGO_INITDB_ROOT_USERNAME: root
       MONGO_INITDB_ROOT_PASSWORD: root
     command: mongod --auth
+
+  jaeger:
+    image: jaegertracing/all-in-one:latest
+    container_name: jaeger
+    ports:
+      - "8081:16686"  # Jaeger UI
+      - "14268"
+      - "14250"
+    networks:
+      - nest
+
+  otel-collector:
+    image: otel/opentelemetry-collector:latest
+    container_name: otel-collector
+    command: ["--config=/etc/otel-collector-config.yml"]
+    volumes:
+      - ./otel-collector-config.yml:/etc/otel-collector-config.yml
+    ports:
+      - "1888:1888"   # pprof extension
+      - "13133:13133" # health_check extension
+      - "4317:4317"   # OTLP gRPC receiver
+      - "4318:4318"   # http gRPC receiver
+      - "55679:55679" # zpages extension
+    networks:
+      - nest
+    depends_on:
+      - jaeger
+    links:
+      - jaeger
 networks:
   nest:
     driver: bridge

otel-collector-config.yml

@@ -0,0 +1,34 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: 0.0.0.0:4317
+      http:
+        endpoint: 0.0.0.0:4318
+
+exporters:
+  debug:
+    verbosity: detailed
+
+  otlp:
+    endpoint: jaeger:4317
+    tls:
+      insecure: true
+
+processors:
+  batch: {}
+
+extensions:
+  health_check: {}
+
+service:
+  extensions: [health_check]
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [debug, otlp]
+    metrics:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [debug]