name: proj-airi-otel

services:
  # ============================================================
  # OpenTelemetry Collector
  # Receives traces, metrics, and logs from the application
  # and exports them to the appropriate backends.
  # ============================================================
  otel-collector:
    image: otel/opentelemetry-collector-contrib:0.120.0
    command: ['--config=/etc/otelcol/otel-collector.yaml']
    volumes:
      - ./otel/collector/otel-collector.yaml:/etc/otelcol/otel-collector.yaml:ro
    ports:
      - '4317:4317' # OTLP gRPC
      - '4318:4318' # OTLP HTTP
    depends_on:
      loki:
        condition: service_started
      tempo:
        condition: service_started
    healthcheck:
      test: ['CMD', 'wget', '--spider', '-q', 'http://localhost:13133/']
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

  # ============================================================
  # Prometheus - Metrics storage and querying
  # ============================================================
  prometheus:
    image: prom/prometheus:v3.2.1
    command:
      - --config.file=/etc/prometheus/prometheus.yaml
      - --storage.tsdb.path=/prometheus
      - --storage.tsdb.retention.time=7d
      - --web.enable-remote-write-receiver
      - --enable-feature=exemplar-storage
      - --enable-feature=native-histograms
    volumes:
      - ./otel/prometheus/prometheus.yaml:/etc/prometheus/prometheus.yaml:ro
      - prometheus_data:/prometheus
    healthcheck:
      test: ['CMD', 'wget', '--spider', '-q', 'http://localhost:9090/-/healthy']
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

  # ============================================================
  # Loki - Log aggregation
  # ============================================================
  loki:
    image: grafana/loki:3.4.3
    command: -config.file=/etc/loki/loki.yaml
    volumes:
      - ./otel/loki/loki.yaml:/etc/loki/loki.yaml:ro
      - loki_data:/loki
    healthcheck:
      test: ['CMD', 'wget', '--spider', '-q', 'http://localhost:3100/ready']
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

  # ============================================================
  # Tempo - Distributed tracing backend
  # ============================================================
  tempo:
    image: grafana/tempo:2.7.2
    command: ['-config.file=/etc/tempo/tempo.yaml']
    volumes:
      - ./otel/tempo/tempo.yaml:/etc/tempo/tempo.yaml:ro
      - tempo_data:/var/tempo
    healthcheck:
      test: ['CMD', 'wget', '--spider', '-q', 'http://localhost:3200/ready']
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

  # ============================================================
  # Grafana - Visualization and dashboards
  # ============================================================
  grafana:
    image: grafana/grafana:11.5.2
    environment:
      - GF_SECURITY_ADMIN_USER=admin
      - GF_SECURITY_ADMIN_PASSWORD=admin
      - GF_AUTH_ANONYMOUS_ENABLED=true
      - GF_AUTH_ANONYMOUS_ORG_ROLE=Viewer
      - GF_FEATURE_TOGGLES_ENABLE=traceqlEditor tempoSearch tempoServiceGraph
    volumes:
      - ./otel/grafana/provisioning:/etc/grafana/provisioning:ro
      - ./otel/grafana/dashboards:/var/lib/grafana/dashboards:ro
      - grafana_data:/var/lib/grafana
    ports:
      - '3001:3000'
    depends_on:
      prometheus:
        condition: service_healthy
      loki:
        condition: service_healthy
      tempo:
        condition: service_healthy
    healthcheck:
      test: ['CMD', 'wget', '--spider', '-q', 'http://localhost:3000/api/health']
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

volumes:
  prometheus_data:
    driver: local
  loki_data:
    driver: local
  tempo_data:
    driver: local
  grafana_data:
    driver: local