# ============================================================================
# Monitoring stack — SEPARATE compose project from the ERP app on purpose:
# app rebuilds (push-to-deploy) must never restart monitoring containers.
#
#   cd /srv/erp   # repo root, so --env-file picks up the app's .env
#   docker compose -f monitoring/docker-compose.monitoring.yml --env-file .env up -d
#
# Included (≈2.2 GB RAM budgeted):
#   GlitchTip (errors, Sentry-compatible) + its own small Postgres
#   Prometheus (metrics) + Grafana (dashboards) + Loki/Promtail (logs)
#   node-exporter (host) + postgres-exporter (app DB) + cAdvisor (containers)
#
# Admin UIs (Grafana :3001, GlitchTip :8001) bind to 127.0.0.1 only —
# reach them via SSH tunnel exactly like the MinIO console. GlitchTip ALSO
# needs a public origin for the browser SDK: set GLITCHTIP_HOST and enable
# the "public" profile (Traefik route + TLS) — see monitoring/README.md.
# ============================================================================

services:
  # ---------------------------------------------------------------- errors --
  glitchtip:
    image: glitchtip/glitchtip:latest  # pinned upstream: version tags are dated, keep an eye on updates
    container_name: monitoring-glitchtip
    mem_limit: 640m
    environment:
      SECRET_KEY: ${GLITCHTIP_SECRET_KEY:?set GLITCHTIP_SECRET_KEY in .env}
      GLITCHTIP_DOMAIN: ${GLITCHTIP_DOMAIN:?set GLITCHTIP_DOMAIN in .env}
      DATABASE_URL: postgres://glitchtip:${GLITCHTIP_DB_PASSWORD:-glitchtip}@glitchtip-postgres:5432/glitchtip
      # Single-container mode (embedded worker) — no redis needed at this scale.
      GLITCHTIP_EMBED_WORKER: "true"
      VALKEY_URL: ""
      ENABLE_USER_REGISTRATION: "false"
      ENABLE_ORGANIZATION_CREATION: "false"
      DEFAULT_FROM_EMAIL: ${GLITCHTIP_FROM_EMAIL:-noreply@bennu-api-bahrestan.ir}
      EMAIL_URL: ${GLITCHTIP_EMAIL_URL:-consolemail://}
    ports:
      - "127.0.0.1:8001:8000"
    depends_on:
      glitchtip-postgres:
        condition: service_healthy
    networks:
      - monitoring
      - shared
      - traefik # public DSN route (profile "public")
    labels:
      - traefik.enable=true
      - traefik.http.routers.glitchtip.rule=Host(`${GLITCHTIP_HOST:-errors.localhost}`)
      - traefik.http.routers.glitchtip.entrypoints=web
      - traefik.http.services.glitchtip.loadbalancer.server.port=8000
    restart: unless-stopped

  glitchtip-postgres:
    image: postgres:16-alpine
    container_name: monitoring-glitchtip-postgres
    mem_limit: 128m
    environment:
      POSTGRES_DB: glitchtip
      POSTGRES_USER: glitchtip
      POSTGRES_PASSWORD: ${GLITCHTIP_DB_PASSWORD:-glitchtip}
    volumes:
      - glitchtip_postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U glitchtip -d glitchtip"]
      interval: 10s
      timeout: 5s
      retries: 10
    networks:
      - monitoring
    restart: unless-stopped

  # --------------------------------------------------------------- metrics --
  prometheus:
    image: prom/prometheus:v3.4.1
    container_name: monitoring-prometheus
    mem_limit: 512m
    command:
      - --config.file=/etc/prometheus/prometheus.yml
      - --storage.tsdb.retention.time=14d
      - --storage.tsdb.retention.size=2GB
    volumes:
      - ./prometheus:/etc/prometheus:ro
      - prometheus_data:/prometheus
    networks:
      - monitoring
      - shared
    restart: unless-stopped

  grafana:
    image: grafana/grafana:11.6.3
    container_name: monitoring-grafana
    mem_limit: 256m
    environment:
      GF_SECURITY_ADMIN_USER: admin
      GF_SECURITY_ADMIN_PASSWORD: ${GRAFANA_ADMIN_PASSWORD:?set GRAFANA_ADMIN_PASSWORD in .env}
      GF_USERS_ALLOW_SIGN_UP: "false"
      GF_SERVER_ROOT_URL: ${GRAFANA_ROOT_URL:-http://localhost:3001/}
    volumes:
      - grafana_data:/var/lib/grafana
      - ./grafana/provisioning:/etc/grafana/provisioning:ro
      - ./grafana/dashboards:/var/lib/grafana/dashboards:ro
    ports:
      - "127.0.0.1:3001:3000"
    networks:
      - monitoring
    restart: unless-stopped

  # ------------------------------------------------------------------ logs --
  loki:
    image: grafana/loki:3.5.0
    container_name: monitoring-loki
    mem_limit: 384m
    command: -config.file=/etc/loki/loki-config.yml
    volumes:
      - ./loki/loki-config.yml:/etc/loki/loki-config.yml:ro
      - loki_data:/loki
    networks:
      - monitoring
    restart: unless-stopped

  promtail:
    image: grafana/promtail:3.5.0
    container_name: monitoring-promtail
    mem_limit: 64m
    command: -config.file=/etc/promtail/promtail-config.yml
    volumes:
      - ./promtail/promtail-config.yml:/etc/promtail/promtail-config.yml:ro
      - /var/lib/docker/containers:/var/lib/docker/containers:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    networks:
      - monitoring
    restart: unless-stopped

  # -------------------------------------------------------------- exporters --
  # Linux-host only (see cadvisor note): local runs skip it via the profile.
  node-exporter:
    image: prom/node-exporter:v1.9.1
    container_name: monitoring-node-exporter
    mem_limit: 32m
    profiles: ["host-metrics"]
    command:
      - --path.rootfs=/host
    volumes:
      - /:/host:ro,rslave
    pid: host
    networks:
      - monitoring
    restart: unless-stopped

  postgres-exporter:
    image: prometheuscommunity/postgres-exporter:v0.17.1
    container_name: monitoring-postgres-exporter
    mem_limit: 48m
    environment:
      # App database on the main stack's postgres (reaches it via erp_shared).
      DATA_SOURCE_NAME: postgres://postgres:${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}@postgres:5432/procurement?sslmode=disable
    networks:
      - monitoring
      - shared
    restart: unless-stopped

  # Linux-host only: the rootfs bind mounts fail on Docker Desktop (Windows/macOS).
  # VPS:   docker compose -f monitoring/docker-compose.monitoring.yml --env-file .env \
  #          --profile host-metrics up -d
  # Local: started WITHOUT the profile — per-container metrics are simply absent.
  cadvisor:
    image: gcr.io/cadvisor/cadvisor:v0.49.1
    container_name: monitoring-cadvisor
    mem_limit: 128m
    profiles: ["host-metrics"]
    privileged: true
    devices:
      - /dev/kmsg
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
    networks:
      - monitoring
    restart: unless-stopped

networks:
  monitoring:
    driver: bridge
  # Reaches the ERP containers (api:8000/metrics, postgres:5432) — the main
  # compose declares the same fixed-name network as "shared".
  shared:
    name: erp_shared
    external: true
  # Created by the main compose; required only for the public GlitchTip route.
  traefik:
    name: traefik_network
    external: true

volumes:
  glitchtip_postgres_data:
  prometheus_data:
  grafana_data:
  loki_data: