matrix-docker-ansible-deploy/roles/custom/matrix-prometheus-nginxlog-exporter/tasks/validate_config.yml

# SPDX-FileCopyrightText: 2022 MDAD project contributors
# SPDX-FileCopyrightText: 2023 - 2024 Slavi Pantaleev
# SPDX-FileCopyrightText: 2025 Suguru Hirahara
#
# SPDX-License-Identifier: AGPL-3.0-or-later

---

- name: (Deprecation) Catch and report renamed prometheus-nginxlog-exporter settings
  ansible.builtin.fail:
    msg: >-
      Your configuration contains a variable, which now has a different name.
      Please rename the variable (`{{ item.old }}` -> `{{ item.new }}`) on your configuration file (vars.yml).
  when: "lookup('ansible.builtin.varnames', ('^' + item.old + '$'), wantlist=True) | length > 0"
  with_items:
    - {'old': 'matrix_prometheus_nginxlog_exporter_container_hostname', 'new': 'matrix_prometheus_nginxlog_exporter_identifier'}
    - {'old': 'matrix_prometheus_nginxlog_exporter_docker_image_name_prefix', 'new': 'matrix_prometheus_nginxlog_exporter_docker_image_registry_prefix'}

- name: Fail if docker image not available for arch
  ansible.builtin.fail:
    msg: >
      'prometheus-nginxlog-exporter' docker image is not available for your arch '{{ matrix_architecture }}'.

      We currently do not support building an image using this playbook.

      You can use a custom-build image by setting
          'matrix_prometheus_nginxlog_exporter_docker_image_arch_check_enabled: false'
          'matrix_prometheus_nginxlog_exporter_docker_image: path/to/docker/image:tag'

      or disable 'prometheus-nginxlog-exporter' by setting
          'matrix_prometheus_nginxlog_exporter: false'

      in vars.yml
  when: matrix_prometheus_nginxlog_exporter_docker_image_arch_check_enabled and matrix_architecture not in matrix_prometheus_nginxlog_exporter_docker_image_arch

- name: Fail if required prometheus-nginxlog-exporter settings not defined
  ansible.builtin.fail:
    msg: >-
      You need to define a required configuration setting (`{{ item.name }}`).
  when: "item.when | bool and lookup('vars', item.name, default='') | string | length == 0"
  with_items:
    - {'name': 'matrix_prometheus_nginxlog_exporter_metrics_proxying_hostname', when: "{{ matrix_prometheus_nginxlog_exporter_metrics_proxying_enabled }}"}
    - {'name': 'matrix_prometheus_nginxlog_exporter_metrics_proxying_path_prefix', when: "{{ matrix_prometheus_nginxlog_exporter_metrics_proxying_enabled }}"}
    - {'name': 'matrix_prometheus_nginxlog_exporter_container_network', when: true}