tenks/ansible/cleanup_state.yml

---
- name: Cleanup Tenks state
  hosts: localhost
  tags:
    - cleanup-state
  tasks:
    - name: Load state from file
      include_vars:
        file: "{{ state_file_path }}"
        name: tenks_state

    - name: Prune absent nodes from state
      tenks_update_state:
        prune_only: true
        state: "{{ tenks_state }}"
      register: new_state

    - name: Write new state to file
      copy:
        # tenks_schedule lookup plugin outputs a dict. Pretty-print this to
        # persist it in a YAML file.
        # NOTE(mgoddard): Use .get to avoid a nasty error in ansible-lint
        # (cannot represent an object).
        content: "{{ new_state.get('result') | to_nice_yaml }}"
        dest: "{{ state_file_path }}"
        mode: preserve