version: "3"

networks:
  back-tier:
  front-tier:

x-logging: &loki-logging
  driver: json-file
  options:
    tag: "{{.ImageName}}|{{.Name}}|{{.ImageFullID}}|{{.FullID}}"

services:

# Database
  db:
    image: postgres
    restart: always
    volumes:
      - db_data:/var/lib/postgresql/data/pgdata
    ports:
      - "5432:5432"
    environment:
      PGDATA: /var/lib/postgresql/data/pgdata
      POSTGRES_USER: serverctl
      POSTGRES_PASSWORD: serverctlsecret
      POSTGRES_DB: serverctl 
    networks:
      - back-tier

  db_migrator:
    build:
      context: services/db/migrations
    networks:
      - back-tier
    depends_on:
      - "db"

  app:
    build:
      context: services/entry/
    networks:
      - back-tier
      - front-tier
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ./services/entry/:/app/
    environment:
      DATABASE_URL: "postgresql://serverctl:serverctlsecret@db/serverctl"
    ports:
      - "8080:8080"
    logging: *loki-logging
    depends_on:
      - db_migrator

# Logging
  loki:
    image: grafana/loki:2.4.2
    ports:
      - 3100
    networks:
      - back-tier
    volumes:
      - './services/logs/loki/config.yaml:/mnt/config/loki-config.yaml'
    command: -config.file=/mnt/config/loki-config.yaml
    logging: *loki-logging

  promtail:
    image: grafana/promtail:2.4.2
    volumes:
      - ./services/logs/promtail/config.yaml:/mnt/config/promtail-config.yaml
      - /var/lib/docker/containers:/host/containers
    command: -config.file /mnt/config/promtail-config.yaml
    networks:
      - back-tier
    logging: *loki-logging
    depends_on:
      - loki

#Metrics
  prometheus:
    image: prom/prometheus
    volumes:
      - ./services/metrics/prometheus/:/etc/prometheus
      - prometheus_data:/prometheus
    networks:
      - back-tier
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--web.console.libraries=/usr/share/prometheus/console_libraries'
      - '--web.console.templates=/usr/share/prometheus/consoles'
    restart: always

  grafana:
    image: grafana/grafana
    user: "472"
    depends_on:
      - prometheus
    ports:
      - "3000:3000"
    volumes:
      - grafana_data:/var/lib/grafana
      - ./services/metrics/grafana/provisioning:/etc/grafana/provisioning
    env_file:
      - ./services/metrics/grafana/config.monitoring
    networks:
      - back-tier
      - front-tier
    restart: always


volumes:
  db_data: {}
  prometheus_data: {}
  grafana_data: {}