---
- name: Create a custom Swarm network.
  docker_network:
    name: docker_gwbridge
    driver_options:
      com.docker.network.bridge.enable_icc: "false"
      com.docker.network.bridge.enable_ip_masquerade: "true"
      com.docker.network.bridge.name: docker_gwbridge
    ipam_options:
      subnet: "{{ docker_swarm_network }}"
      gateway: "{{ docker_swarm_network | ipaddr('net') | ipaddr('1') | ipaddr('ip') }}"
  when: docker_swarm_network is defined and docker_swarm_network | ipaddr('net')
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Check if "Swarm Mode" is enabled.
  shell: docker info
  changed_when: false
  check_mode: false
  register: docker_info
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Init "Swarm Mode" on the first manager.
  shell: docker swarm init
        --listen-addr {{ docker_swarm_addr }}:{{ docker_swarm_port }}
        --advertise-addr {{ docker_swarm_addr }}
  when: "docker_info.stdout.find('Swarm: active') == -1
    and inventory_hostname == groups['docker_swarm_manager'][0]"
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Get the worker join-token.
  shell: docker swarm join-token -q worker
  changed_when: false
  check_mode: false
  register: docker_worker_token
  delegate_to: "{{ groups['docker_swarm_manager'][0] }}"
  delegate_facts: true
  when: "'docker_swarm_worker' in group_names"
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Get the manager join-token.
  shell: docker swarm join-token -q manager
  changed_when: false
  check_mode: false
  register: docker_manager_token
  delegate_to: "{{ groups['docker_swarm_manager'][0] }}"
  delegate_facts: true
  when: "'docker_swarm_manager' in group_names
    and inventory_hostname != groups['docker_swarm_manager'][0]"
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Declare the address of the first Swarm manager as a fact.
  set_fact:
    docker_manager_address: "{{ groups['docker_swarm_manager'][0] }}:{{ docker_swarm_port }}"
  check_mode: false
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Join the pending Swarm worker nodes.
  shell: docker swarm join
        --listen-addr {{ docker_swarm_addr }}:{{ docker_swarm_port }}
        --advertise-addr {{ docker_swarm_addr }}
        --token "{{ docker_worker_token.stdout }}"
        {{ docker_manager_address }}
  changed_when: false
  when: "docker_info.stdout.find('Swarm: active') == -1
    and docker_info.stdout.find('Swarm: pending') == -1
    and 'docker_swarm_worker' in group_names
    and 'docker_swarm_manager' not in group_names"
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init

- name: Join the pending Swarm manager nodes.
  shell: docker swarm join
        --listen-addr {{ docker_swarm_addr }}:{{ docker_swarm_port }}
        --advertise-addr {{ docker_swarm_addr }}
        --token "{{ docker_manager_token.stdout }}"
        {{ docker_manager_address }}
  changed_when: false
  when: "docker_info.stdout.find('Swarm: active') == -1
    and docker_info.stdout.find('Swarm: pending') == -1
    and 'docker_swarm_manager' in group_names
    and inventory_hostname != groups['docker_swarm_manager'][0]"
  tags:
    - docker
    - docker_swarm
    - docker_swarm_init