# Docker Compose for OpenTelemetry Testing
# This sets up a complete observability stack for local development

version: '3.8'

services:
  # OpenTelemetry Collector
  # Receives telemetry data and exports to backends
  otel-collector:
    image: otel/opentelemetry-collector-contrib:latest
    container_name: charybdis-otel-collector
    command: ["--config=/etc/otel-collector-config.yaml"]
    volumes:
      - ./docker/otel-collector-config.yaml:/etc/otel-collector-config.yaml
    ports:
      - "4317:4317"   # OTLP gRPC receiver
      - "4318:4318"   # OTLP HTTP receiver
      - "8888:8888"   # Prometheus metrics exposed by the collector
      - "8889:8889"   # Prometheus exporter metrics
      - "13133:13133" # health_check extension
    networks:
      - charybdis-telemetry

  # Jaeger - Distributed Tracing UI
  jaeger:
    image: jaegertracing/all-in-one:latest
    container_name: charybdis-jaeger
    environment:
      - COLLECTOR_OTLP_ENABLED=true
    ports:
      - "16686:16686" # Jaeger UI
      - "14250:14250" # Jaeger gRPC
    networks:
      - charybdis-telemetry

  # Prometheus - Metrics Storage
  prometheus:
    image: prom/prometheus:latest
    container_name: charybdis-prometheus
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--web.console.libraries=/etc/prometheus/console_libraries'
      - '--web.console.templates=/etc/prometheus/consoles'
      - '--web.enable-lifecycle'
    volumes:
      - ./docker/prometheus.yml:/etc/prometheus/prometheus.yml
      - prometheus-data:/prometheus
    ports:
      - "9090:9090"
    networks:
      - charybdis-telemetry

  # Grafana - Visualization
  grafana:
    image: grafana/grafana:latest
    container_name: charybdis-grafana
    environment:
      - GF_SECURITY_ADMIN_PASSWORD=admin
      - GF_SECURITY_ADMIN_USER=admin
    volumes:
      - ./docker/grafana/provisioning:/etc/grafana/provisioning
      - grafana-data:/var/lib/grafana
    ports:
      - "3000:3000"
    networks:
      - charybdis-telemetry
    depends_on:
      - prometheus
      - jaeger

networks:
  charybdis-telemetry:
    driver: bridge

volumes:
  prometheus-data:
  grafana-data: