computer-playbook/roles/web-app-wazuh/tasks/certs/swarm.yml

---
- name: "🔍 Read the Wazuh certs completion marker"
  ansible.builtin.slurp:
    src: "{{ WAZUH_CERTS_MARKER_HOST }}"
  register: wazuh_certs_marker
  failed_when: false

- name: "🔍 Checksum the rendered Wazuh certs.yml"
  ansible.builtin.stat:
    path: "{{ WAZUH_CERTS_CONFIG_HOST }}"
    checksum_algorithm: sha256
  register: wazuh_certs_config

- name: "🔍 Stat every Wazuh cert file the stack bind-mounts"
  ansible.builtin.stat:
    path: "{{ item }}"
  loop: "{{ WAZUH_CERTS_REQUIRED_FILES }}"
  register: wazuh_certs_files

- name: "🔍 List the services of a running Wazuh stack"
  ansible.builtin.command:
    argv:
      - container
      - service
      - ls
      - --quiet
      - --filter
      - "label=com.docker.stack.namespace={{ application_id | get_entity_name }}"
  register: wazuh_certs_stack
  changed_when: false

- name: "🧮 Decide whether the Wazuh certs are current"
  vars:
    expected: "{{ wazuh_certs_config.stat.checksum }} {{ WAZUH_CERTS_TOOL_VERSION }}"
    recorded: "{{ wazuh_certs_marker.content | default('') | b64decode | trim }}"
    present: >-
      {{ wazuh_certs_files.results | selectattr('stat.size', 'defined') | selectattr('stat.size', 'gt', 0) | list | length }}
  ansible.builtin.set_fact:
    wazuh_certs_expected: "{{ expected }}"
    wazuh_certs_recorded: "{{ recorded }}"
    wazuh_certs_present: "{{ present | int }}"
    wazuh_certs_current: "{{ present | int == WAZUH_CERTS_REQUIRED_FILES | length and recorded == expected }}"

- name: "⛔ Refuse to rotate the Wazuh CA under a running stack"
  ansible.builtin.fail:
    msg: >-
      Wazuh TLS certs on {{ inventory_hostname }} are not current, and the stack
      '{{ application_id | get_entity_name }}' is running, so they were NOT regenerated: that would
      swap the CA under the live services.
      Marker {{ WAZUH_CERTS_MARKER_HOST }} reads '{{ wazuh_certs_recorded or 'missing' }}',
      expected '{{ wazuh_certs_expected }}' (sha256 of certs.yml, then tool version);
      {{ wazuh_certs_present }}/{{ WAZUH_CERTS_REQUIRED_FILES | length }} cert files in
      {{ WAZUH_CERTS_DIR_HOST }} exist and are non-empty.
      To regenerate: run 'docker stack rm {{ application_id | get_entity_name }}', then redeploy.
      To keep certs you know are good (a host deployed before this marker existed): write
      '{{ wazuh_certs_expected }}' to {{ WAZUH_CERTS_MARKER_HOST }}, then redeploy.
  when:
    - not (wazuh_certs_current | bool)
    - wazuh_certs_stack.stdout | trim | length > 0

- name: "⬇️ Pull the Wazuh certs generator image on the stack host"
  ansible.builtin.command:
    argv:
      - container
      - pull
      - "{{ WAZUH_CERTS_GENERATOR_IMAGE }}"
  register: wazuh_certs_pull
  retries: 10
  delay: 6
  until: wazuh_certs_pull.rc == 0
  changed_when: false
  when: not (wazuh_certs_current | bool)

- name: "🔐 Run the Wazuh certs generator once on the stack host"
  ansible.builtin.shell: |
    set -euo pipefail
    container ps -aq --filter {{ ('name=^' ~ WAZUH_CERTS_GENERATOR_CONTAINER ~ '$') | quote }} | xargs -r container rm -f
    timeout -k 30 {{ lookup('timeout', 600) | int }} container run --rm \
      --name {{ WAZUH_CERTS_GENERATOR_CONTAINER | quote }} \
      --entrypoint {{ WAZUH_CERTS_ENTRYPOINT_TARGET | quote }} \
      --env CERT_TOOL_VERSION={{ WAZUH_CERTS_TOOL_VERSION | quote }} \
      --env WAZUH_MANAGER_NODE={{ WAZUH_MANAGER_CONTAINER | quote }} \
      {% for mount in WAZUH_CERTS_GENERATOR_MOUNTS %}--mount {{ mount | quote }} {% endfor %}\
      {{ WAZUH_CERTS_GENERATOR_IMAGE | quote }}
  args:
    executable: /bin/bash
  register: wazuh_certs_generate
  retries: 3
  delay: 10
  until: wazuh_certs_generate.rc == 0
  when: not (wazuh_certs_current | bool)

- name: "✅ Verify the generated Wazuh certs and record the marker"
  when: wazuh_certs_generate is not skipped
  block:
    - name: "🔍 Stat the Wazuh cert files the generator wrote"
      ansible.builtin.stat:
        path: "{{ item }}"
      loop: "{{ WAZUH_CERTS_REQUIRED_FILES }}"
      register: wazuh_certs_written

    - name: "✅ Assert every Wazuh cert file exists and is non-empty"
      ansible.builtin.assert:
        that:
          - >-
            wazuh_certs_written.results | selectattr('stat.size', 'defined') | selectattr('stat.size', 'gt', 0)
            | list | length == WAZUH_CERTS_REQUIRED_FILES | length
        fail_msg: "The Wazuh certs generator exited 0 but left a required cert file missing or empty."

    - name: "📝 Record the Wazuh certs completion marker"
      ansible.builtin.copy:
        content: "{{ wazuh_certs_expected }}\n"
        dest: "{{ WAZUH_CERTS_MARKER_HOST }}"
        mode: "0644"