ansible_variable_includes

# deploy-all.yml:
---
- hosts: localhost
  gather_facts: false
  tasks:
    - name: include region list
      include_vars: "{{ playbook_dir }}/config/{{ env | mandatory }}/regions.yml"
    - add_host:
        name: "{{ item }}"
        group: aws_regions
        region: "{{ item }}"
      with_items: "{{ Regions }}"


- hosts: aws_regions
  connection: local
  gather_facts: false
  tasks:
    - name: "include service list"
      include_vars: "{{ playbook_dir}}/config/common.yml"

    - name: "Include and deploy templates"
      include_role:
        name: "{{ item.type }}"
      vars:
        name: "{{ item.name }}"
        env: "{{ item.env }}"
      with_items: "{{ services }}"

-------------------------------------------------------
# roles/cloudformation/tasks/main.yml
---

- name: include common vars
  include_vars: "{{ playbook_dir }}/config/{{ env | mandatory }}/common.yml"

- name: include vars
  include_vars: "{{ playbook_dir }}/config/{{ env | mandatory }}/{{ name | mandatory }}.yml"
  # This file might contain the variable "whitelist", it seems like it's not unset when the role is re-run.
  # so if configfile "a.yml" contains whitelist, the following task inlcuding "b.yml" will not overwrite it.

- name: "Create or update a cloudformation stack for {{ name }}"
  cloudformation:
    stack_name: "{{ name }}"
    state: "present"
    region: "{{ inventory_hostname }}"
    template: "{{ playbook_dir }}/../cloudformation/{{ taskvars.Template }}"
    template_parameters: "{{ TemplateParams }}"
  when: whitelist is not defined or (whitelist is defined and inventory_hostname in whitelist)
  register: stack
  async: 900
  poll: 0

- name: "Wait for stack to finish for {{ name }}"
  async_status:
    jid: "{{ stack.ansible_job_id }}"
  register: jobs
  until: jobs.finished
  delay: 5
  retries: 200
  when: whitelist is not defined or (whitelist is defined and inventory_hostname in whitelist)