# instance-sensor — the overleaf-cep "instance statistics" sensors,
# exposed LIVE as Prometheus gauges (scrape-on-read) instead of the
# hourly-cron-Mongo-snapshots of PR yu-i-i/overleaf-cep#178. Same sensor
# definitions, prometheus-native delivery:
#
#   users      : total + active (last 24h), split standard/guest when
#                INSTANCE_STATS_SEGMENTATION != false  (guest = user with
#                'guest-user' in adminRoles — the PR#176/PR#178 definition)
#   projects   : total + active (last 24h, projects.lastUpdated)
#   files      : total documents (docs collection)
#   storage    : mongodb (dbStats.totalSize), filestore (du of the SeaweedFS
#                data dir — the S3 filestore content), redis RAM (used_memory)
#                + redis disk (AOF current size)
#
# Self-contained node image (mongodb + ioredis drivers) — does NOT depend on
# the overleaf image layout. Read-only on its inputs.
services:
  instance-sensor:
    build:
      context: .
      dockerfile: Dockerfile
    image: ${INSTANCE_SENSOR_IMAGE:-overleaf-instance-sensor:local}
    container_name: instance-sensor
    hostname: instance-sensor
    restart: unless-stopped
    environment:
      MONGO_URL: "mongodb://${MONGO_HOSTNAME:-mongo}:${MONGO_PORT:-27017}/${MONGODB_DATABASE:-sharelatex}"
      REDIS_ADDR: "redis://${REDIS_HOSTNAME:-redis}:${REDIS_PORT:-6379}"
      # du() of the SeaweedFS volume data dir, mounted read-only below
      # (mirror of PR#178's du-based overleaf_storage)
      FILESTORE_DATA_DIR: /hostdata/filestore
      # 'standard'/'guest' split (PR#178/PR#176): 'false' (default, per PR)
      # or 'true'
      SEGMENTATION: ${INSTANCE_STATS_SEGMENTATION:-false}
      ACTIVE_WINDOW_HOURS: "24"
      PORT: "9464"
    expose:
      - "9464"
    volumes:
      - ${COMPOSE_DIRECTORY:-/data_1/docker/compose}/seaweedfs-volume/data:/hostdata/filestore:ro
    healthcheck:
      test: ["CMD-SHELL", "wget -q --spider --timeout=5 http://127.0.0.1:9464/metrics >/dev/null 2>&1 || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 30s
    networks:
      - overleaf-network

networks:
  overleaf-network:
    external: true