services:
  app-a:
    build: ./app_fastapi/
    container_name: app-a
    ports:
      - "8000:8000"
    volumes:
      - ./app_fastapi/:/app
      - ./logs:/logs
    environment:
      APP_NAME: "app-a"
      TARGET_ONE_SVC: "app-b:8000"
      OTLP_GRPC_ENDPOINT: "http://otel-collector:4319"
    command: "python main.py"
    depends_on:
      - loki
    networks:
      - observability-net

  app-b:
    build: ./app_fastapi/
    container_name: app-b
    ports:
      - "8001:8000"
    volumes:
      - ./app_fastapi/:/app
      - ./logs:/logs
    environment:
      APP_NAME: "app-b"
      TARGET_ONE_SVC: "app-a:8000"
      OTLP_GRPC_ENDPOINT: "http://otel-collector:4319"
    command: "python main.py"
    depends_on:
      - loki
    networks:
      - observability-net

  tempo:
    image: grafana/tempo:2.2.3
    container_name: tempo
    ports:
      - "4317:4317"   # OTLP gRPC port
    volumes:
      - ./etc/tempo/tempo.yaml:/etc/tempo/tempo.yaml
    command:
      - "--target=all"
      - "--storage.trace.backend=local"
      - "--storage.trace.local.path=/var/tempo"
      - "--auth.enabled=false"
      - "--config.file=/etc/tempo/tempo.yaml"
    depends_on:
      - loki
    logging:
      driver: json-file
    networks:
      - observability-net

  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    command:
      - "--web.enable-remote-write-receiver"
      - "--enable-feature=exemplar-storage"
      - "--config.file=/workspace/prometheus.yml"
    ports:
      - "9090:9090"
    volumes:
      - ./etc/prometheus:/workspace
    depends_on:
      - loki
    logging:
      driver: json-file
    networks:
      - observability-net

  promtail:
    image: grafana/promtail:2.9.0
    container_name: promtail
    volumes:
      - ./etc/promtail/config.yml:/etc/promtail/config.yml
      - ./logs:/logs
    command: -config.file=/etc/promtail/config.yml
    depends_on:
      - loki
    networks:
      - observability-net

  loki:
    image: grafana/loki:2.9.0
    container_name: loki
    ports:
      - "3100:3100"
    command: -config.file=/etc/loki/local-config.yaml
    volumes:
      - ./etc/loki/local-config.yaml:/etc/loki/local-config.yaml
    networks:
      - observability-net

  grafana:
    image: grafana/grafana:11.0.0
    container_name: grafana
    ports:
      - "3001:3000"
    environment:
      GF_FEATURE_TOGGLES_ENABLE: "tempoServiceGraph,traceToMetrics"
      GF_USERS_DEFAULT_THEME: "light"
      GF_SECURITY_ALLOW_EMBEDDING: true
      GF_AUTH_ANONYMOUS_ENABLED: true
    volumes:
      - ./etc/grafana/:/etc/grafana/provisioning/datasources
    depends_on:
      - loki
    logging:
      driver: json-file
    networks:
      - observability-net

  otel-collector:
    image: otel/opentelemetry-collector:0.88.0
    restart: always
    command: ["--config=/etc/otel-collector-config.yaml"]
    volumes:
      - ./etc/otel/otel-collector-config.yaml:/etc/otel-collector-config.yaml
    ports:
      - "8888:8888"
      - "8889:8889"
      - "13133:13133"
      - "4319:4319"
      - "4318:4318"
    depends_on:
      - prometheus
      - tempo
    logging:
      driver: json-file
    networks:
      - observability-net

networks:
  observability-net:
    name: observability-net