# Factorio + a full Grafana observability stack: factory/server stats via
# Prometheus, server logs via Loki. One `docker compose up -d` and both
# dashboards are already provisioned — no manual datasource or dashboard
# setup in the Grafana UI.
#
# The Stats dashboard can be made public (Grafana's built-in public-dashboard
# feature, a UI toggle on the dashboard's share menu) without exposing the
# Logs dashboard, which stays behind normal Grafana admin auth.
#
# Prometheus/Loki/Promtail/Grafana all publish an arm64 manifest entry with
# no explicit "v8" variant tag (this is normal upstream practice — arm64
# has only one variant in practice). Most Docker versions treat a missing
# variant as compatible with any, but some (observed on a Raspberry Pi 5)
# match strictly and refuse the pull with "no matching manifest for
# linux/arm64/v8". If you hit that, set DOCKER_PLATFORM=linux/arm64 in
# your .env — left unset (the default), this has no effect on any host.
#
# FACTORIO_TAG defaults to "stable". On arm64 (e.g. a Raspberry Pi), set it
# to "experimental" in your .env — see the main README's Tags section:
# arm64 headless builds aren't published on the stable channel yet.
#
# GRAFANA_PORT defaults to 3000. Set it in your .env if you already have
# something else bound to that port on the host.

services:
  factorio:
    image: ghcr.io/aconti90/factorio-headless:${FACTORIO_TAG:-stable}
    container_name: factorio
    restart: unless-stopped

    ports:
      - "34197:34197/udp"
      - "127.0.0.1:27015:27015/tcp"

    volumes:
      - ./data:/factorio

    environment:
      RCON_PASSWORD: "${RCON_PASSWORD:?set RCON_PASSWORD in .env}"
      # Ships the server console to a file on the volume, which promtail
      # tails below. Existing entrypoint.sh support — no image change needed.
      CONSOLE_LOG: /factorio/console.log
      # A stats dashboard is only interesting if the factory is actually
      # running — without this, Factorio pauses the whole simulation
      # whenever nobody's connected (the default), and every metric here
      # just sits frozen. See the main README's "Keeping a world running
      # while you work" section.
      AUTO_PAUSE: "false"

  exporter:
    build: ../exporter
    container_name: factorio-exporter
    restart: unless-stopped
    depends_on:
      - factorio
    environment:
      FACTORIO_HOST: factorio
      RCON_PORT: "27015"
      RCON_PASSWORD: "${RCON_PASSWORD:?set RCON_PASSWORD in .env}"
      POLL_INTERVAL_SECONDS: "10"

  prometheus:
    image: prom/prometheus:v3.15.0
    platform: ${DOCKER_PLATFORM:-}
    container_name: factorio-prometheus
    restart: unless-stopped
    volumes:
      - ../observability/prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus-data:/prometheus

  loki:
    image: grafana/loki:3.7.8
    platform: ${DOCKER_PLATFORM:-}
    container_name: factorio-loki
    restart: unless-stopped
    volumes:
      - ../observability/loki-config.yml:/etc/loki/local-config.yaml:ro
      - loki-data:/loki
    command: ["-config.file=/etc/loki/local-config.yaml"]

  promtail:
    image: grafana/promtail:3.6.8
    platform: ${DOCKER_PLATFORM:-}
    container_name: factorio-promtail
    restart: unless-stopped
    depends_on:
      - loki
    volumes:
      - ../observability/promtail-config.yml:/etc/promtail/config.yml:ro
      - ./data:/var/log/factorio:ro
      - promtail-positions:/data
    command: ["-config.file=/etc/promtail/config.yml"]

  grafana:
    image: grafana/grafana:13.2.2
    platform: ${DOCKER_PLATFORM:-}
    container_name: factorio-grafana
    restart: unless-stopped
    depends_on:
      - prometheus
      - loki
    ports:
      - "${GRAFANA_PORT:-3000}:3000"
    environment:
      GF_SECURITY_ADMIN_PASSWORD: "${GRAFANA_ADMIN_PASSWORD:?set GRAFANA_ADMIN_PASSWORD in .env}"
    volumes:
      - ../observability/grafana/provisioning:/etc/grafana/provisioning:ro
      - ../observability/grafana/dashboards:/var/lib/grafana/dashboards:ro
      - grafana-data:/var/lib/grafana
    networks:
      - default
      - factorio-tunnel

volumes:
  prometheus-data:
  loki-data:
  grafana-data:
  promtail-positions:

# `factorio-tunnel` lets a separate docker-compose stack (e.g. one running
# a Cloudflare Tunnel container) join this network as `external: true` and
# reach Grafana directly by container name (http://factorio-grafana:3000),
# without publishing a new host port. Only Grafana is on it — Prometheus,
# Loki, and Promtail stay on the default network since nothing external
# needs to reach them.
#
# Note: `docker compose down` will try to remove this network, which fails
# (or leaves things in a bad state) if another stack is still attached to it.
# Make sure to bring down any external stacks using this network first.
networks:
  factorio-tunnel:
    name: factorio-tunnel