cpp-microservice-template/docker-compose.yml at main · vlantonov/cpp-microservice-template · GitHub

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services:

  # ---------------------------------------------------------------------------
  # hello_server — C++ gRPC service
  # ---------------------------------------------------------------------------
  hello:
    build:
      context: .
      dockerfile: Dockerfile
    image: hello_server:0.1.0
    environment:
      - GRPC_PORT=50051
      - METRICS_PORT=9090
      - LOG_LEVEL=info
      - OTEL_EXPORTER_OTLP_ENDPOINT=otel-collector:4317
    ports:
      - "50051:50051"   # gRPC
      - "9090:9090"     # Prometheus metrics
    depends_on:
      - otel-collector
    restart: unless-stopped

  # ---------------------------------------------------------------------------
  # Envoy proxy — REST→gRPC transcoding on :8080
  # The proto.pb descriptor set is generated by CMake into ${builddir}/proto.pb
  # and must be present before starting docker compose.
  # ---------------------------------------------------------------------------
  envoy:
    image: envoyproxy/envoy:v1.31.0
    ports:
      - "8080:8080"     # REST/JSON ingress
      - "9901:9901"     # Envoy admin interface
    volumes:
      - ./deploy/envoy/envoy.yaml:/etc/envoy/envoy.yaml:ro
      # Mount the generated proto descriptor set (produced by cmake --build).
      # Path matches cmake_layout output: build/Release/ (capital R).
      - ./build/Release/proto.pb:/etc/envoy/proto.pb:ro
    command: ["envoy", "-c", "/etc/envoy/envoy.yaml"]
    depends_on:
      - hello
    restart: unless-stopped

  # ---------------------------------------------------------------------------
  # OpenTelemetry Collector — receives OTLP/gRPC traces from hello_server
  # ---------------------------------------------------------------------------
  otel-collector:
    image: otel/opentelemetry-collector-contrib:0.96.0
    ports:
      - "4317:4317"     # OTLP/gRPC receiver
      - "4318:4318"     # OTLP/HTTP receiver
    volumes:
      - ./deploy/otel-collector/otel-collector-config.yaml:/etc/otel-collector-config.yaml:ro
    command: ["--config=/etc/otel-collector-config.yaml"]
    restart: unless-stopped

  # ---------------------------------------------------------------------------
  # Prometheus — scrapes hello_server :9090/metrics every 15 s
  # ---------------------------------------------------------------------------
  prometheus:
    image: prom/prometheus:v2.50.1
    ports:
      - "9091:9090"     # Prometheus UI (mapped to 9091 to avoid conflict)
    volumes:
      - ./deploy/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro
    restart: unless-stopped