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

---

- 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 change your configuration to rename the variable (`{{ item.old }}` -> `{{ item.new }}`).      
  when: "item.old in vars"
  with_items:
    - {'old': 'matrix_prometheus_nginxlog_exporter_container_hostname', 'new': 'matrix_prometheus_nginxlog_exporter_identifier'}

- name: Fail if docker image not availble 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 vars[item.name] == ''"
  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}