version: "3.9"

# DuckLake Observability in a Box
#
# This compose file starts only Grafana — it connects to your EXISTING
# DuckLake PostgreSQL catalog.  Run init_monitoring.sql against that catalog
# first to install the stream tables.
#
# Usage:
#   cp .env.example .env && $EDITOR .env
#   psql "$DATABASE_URL" -f init_monitoring.sql
#   docker compose up -d grafana
#   open http://localhost:3100

services:
  grafana:
    image: grafana/grafana:latest
    container_name: ducklake_observability_grafana
    environment:
      GF_SECURITY_ADMIN_PASSWORD: admin
      GF_SECURITY_ADMIN_USER: admin
      GF_AUTH_ANONYMOUS_ENABLED: "true"
      GF_AUTH_ANONYMOUS_ORG_ROLE: Viewer
      # Pass the target PostgreSQL connection through to the datasource provisioning
      PG_HOST: "${PG_HOST:-localhost}"
      PG_PORT: "${PG_PORT:-5432}"
      PG_DATABASE: "${PG_DATABASE:-lake_catalog}"
      PG_USER: "${PG_USER:-postgres}"
      PG_PASSWORD: "${PG_PASSWORD:-postgres}"
    ports:
      - "${GRAFANA_PORT:-3100}:3000"
    volumes:
      - ./grafana/provisioning:/etc/grafana/provisioning:ro
      - ./grafana/dashboards:/var/lib/grafana/dashboards:ro
      - grafana_data:/var/lib/grafana

volumes:
  grafana_data: