detect.yml

---
- name: "🔍 POSTGRES | Resolve the mountpoint of {{ POSTGRES_VOLUME }}"
  ansible.builtin.command:
    argv:
      - container
      - volume
      - inspect
      - --format
      - "{{ '{{' }} .Mountpoint {{ '}}' }}"
      - "{{ POSTGRES_VOLUME }}"
  register: postgres_volume_inspect
  changed_when: false
  failed_when:
    - postgres_volume_inspect.rc != 0
    - not (postgres_volume_inspect.stderr | lower is search('no such volume|volume .* not found'))
  delegate_to: "{{ STACK_HOST }}"

- name: "🔍 POSTGRES | Detect the cluster in {{ POSTGRES_VOLUME }}"
  ansible.builtin.script:
    cmd: >-
      python/cluster.py detect
      --root {{ postgres_volume_inspect.stdout | trim | quote }}
      --target {{ POSTGRES_VERSION_MAJOR | quote }}
  register: postgres_cluster_detect
  changed_when: false
  when: postgres_volume_inspect.rc == 0
  delegate_to: "{{ STACK_HOST }}"

- name: "📌 POSTGRES | Remember the cluster state"
  ansible.builtin.set_fact:
    postgres_cluster: "{{ (postgres_cluster_detect.stdout | from_json) if postgres_volume_inspect.rc == 0 else {'state': 'fresh', 'leftovers': []} }}"