stack.yml

- set_fact:
    execute_changeset: "{{ execute | default(false) }}"
    template_paramters: "{{ paramters | default({}) }}"
    termination_protection: "{{ protect | default('no') }}"
    region: "{{ region |  default(lookup('env', 'AWS_DEFAULT_REGION')) }}"

- name: check stack exists or not
  cloudformation_info:
    region: "{{ region }}"
    stack_name: "{{ stack_name }}"
  register: result

- set_fact:
    cfn_stack_exists: "{{ result.cloudformation.keys() | length > 0 }}"

- debug: var=cfn_stack_exists

- name: create stack
  cloudformation:
    stack_name: "{{ stack_name }}"
    state: present
    region: "{{ region }}"
    disable_rollback: false
    termination_protection: "{{ termination_protection | default('no') }}"
    template: "{{ cfn_template }}"
    template_parameters: "{{ template_paramters }}"
    capabilities:
      - CAPABILITY_IAM
      - CAPABILITY_NAMED_IAM
      - CAPABILITY_AUTO_EXPAND
  when: not cfn_stack_exists | bool

- name: create changeset
  cloudformation:
    stack_name: "{{ stack_name }}"
    state: present
    region: "{{ region }}"
    disable_rollback: false
    create_changeset: yes
    template: "{{ cfn_template }}"
    template_parameters: "{{ template_paramters }}"
  register: result
  when: cfn_stack_exists | bool

- set_fact:
    change_set: "{{ result.warnings[0] | regex_search('(Ansible[^ ]*)') }}"
  when: cfn_stack_exists | bool

- debug: var=change_set
  when: cfn_stack_exists | bool

- name: apply changeset
  command: >
    aws cloudformation execute-change-set --region {{ region }}
     --stack-name "{{ stack_name }}"
     --change-set-name "{{ change_set }}"
  register: result
  when: (cfn_stack_exists | bool) and (change_set != "") and (execute_changeset | bool)

- debug: var=result
  when: (cfn_stack_exists | bool) and (change_set != "") and (execute_changeset | bool)