# Docker Compose for EVPN-VXLAN Fabric Monitoring Stack
# gnmic (gNMI collector) -> Prometheus -> Grafana
#
# Usage:
#   docker-compose up -d
#
# Access:
#   - Grafana:    http://localhost:3000 (admin/admin)
#   - Prometheus: http://localhost:9090
#   - gnmic:      http://localhost:9804/metrics

version: '3.8'

services:
  # gNMI Collector - streams telemetry from Arista switches
  gnmic:
    image: ghcr.io/openconfig/gnmic:latest
    container_name: gnmic
    restart: unless-stopped
    ports:
      - "9804:9804"
    volumes:
      - ./gnmic/gnmic.yaml:/app/gnmic.yaml:ro
    command: subscribe --config /app/gnmic.yaml
    networks:
      - monitoring
      - evpn-mgmt
    # Health check to ensure gnmic is running
    healthcheck:
      test: ["CMD", "wget", "-q", "--spider", "http://localhost:9804/metrics"]
      interval: 30s
      timeout: 10s
      retries: 3

  # Prometheus - time series database for metrics
  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    restart: unless-stopped
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus_data:/prometheus
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--storage.tsdb.retention.time=15d'
      - '--web.enable-lifecycle'
      - '--web.console.libraries=/etc/prometheus/console_libraries'
      - '--web.console.templates=/etc/prometheus/consoles'
    networks:
      - monitoring
    depends_on:
      gnmic:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "wget", "-q", "--spider", "http://localhost:9090/-/healthy"]
      interval: 30s
      timeout: 10s
      retries: 3

  # Grafana - visualization and dashboards
  grafana:
    image: grafana/grafana:latest
    container_name: grafana
    restart: unless-stopped
    ports:
      - "3000:3000"
    environment:
      - GF_SECURITY_ADMIN_USER=admin
      - GF_SECURITY_ADMIN_PASSWORD=admin
      - GF_USERS_ALLOW_SIGN_UP=false
      - GF_INSTALL_PLUGINS=knightss27-weathermap-panel
    volumes:
      - ./grafana/provisioning/datasources:/etc/grafana/provisioning/datasources:ro
      - ./grafana/provisioning/dashboards:/etc/grafana/provisioning/dashboards:ro
      - ./grafana/dashboards:/var/lib/grafana/dashboards:ro
      - grafana_data:/var/lib/grafana
    networks:
      - monitoring
    depends_on:
      prometheus:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "wget", "-q", "--spider", "http://localhost:3000/api/health"]
      interval: 30s
      timeout: 10s
      retries: 3

networks:
  monitoring:
    driver: bridge
  # Connect to ContainerLab management network
  evpn-mgmt:
    external: true
    name: evpn-mgmt

volumes:
  prometheus_data:
    driver: local
  grafana_data:
    driver: local