name: distsys-seminar7

x-lab: &lab
  image: distsys-seminar7-tools:local
  build: .
  volumes:
    - .:/lab:ro
    - lab-work:/work
  working_dir: /lab
  init: true

services:
  tools:
    <<: *lab
    profiles: [tools]
  consul:
    image: hashicorp/consul:1.21.5
    command: agent -dev -client=0.0.0.0 -log-level=warn
    ports:
      - "127.0.0.1:18500:8500"
    healthcheck:
      test: ["CMD", "consul", "members"]
      interval: 2s
      timeout: 2s
      retries: 20
  app-a:
    <<: *lab
    command: python3 consul/app.py
    environment:
      INSTANCE_ID: app-a
      CONSUL_URL: http://consul:8500
    depends_on:
      consul:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-fsS", "http://localhost:8080/health"]
      interval: 2s
      timeout: 2s
      retries: 20
  app-b:
    <<: *lab
    command: python3 consul/app.py
    environment:
      INSTANCE_ID: app-b
      CONSUL_URL: http://consul:8500
    depends_on:
      consul:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-fsS", "http://localhost:8080/health"]
      interval: 2s
      timeout: 2s
      retries: 20
  auth:
    <<: *lab
    command: python3 dns/server.py auth
    networks:
      default:
        aliases: [ns.lab.test]
    healthcheck:
      test: ["CMD-SHELL", "dig @127.0.0.1 orders.lab.test A +short | grep -q 192.0.2."]
      interval: 2s
      timeout: 2s
      retries: 20
  resolver:
    <<: *lab
    command: python3 dns/server.py resolver
    depends_on:
      auth:
        condition: service_healthy
    healthcheck:
      test: ["CMD-SHELL", "rndc -c /tmp/dns-lab/rndc.conf status"]
      interval: 2s
      timeout: 2s
      retries: 20

  tld-dns:
    <<: *lab
    command: python3 dns/server.py tld
    networks:
      default:
        aliases: [ns.test]
    depends_on:
      auth:
        condition: service_healthy
    healthcheck:
      test: ["CMD-SHELL", "dig @127.0.0.1 test SOA +short | grep -q hostmaster"]
      interval: 2s
      timeout: 2s
      retries: 20
  root-dns:
    <<: *lab
    command: python3 dns/server.py root
    networks:
      default:
        aliases: [ns.root]
    depends_on:
      tld-dns:
        condition: service_healthy
    healthcheck:
      test: ["CMD-SHELL", "dig @127.0.0.1 . SOA +short | grep -q hostmaster"]
      interval: 2s
      timeout: 2s
      retries: 20

volumes:
  lab-work: