---
- name: Mongodb exporter
  block:
    - name: Create the user under the mongodb exporter will run
      ansible.builtin.user:
        name: '{{ mongodb_prometheus_exporter_user }}'
        home: '{{ mongodb_prometheus_exporter_home }}'
        createhome: no
        shell: /usr/sbin/nologin
        system: yes

    - name: Create the prometheus mongodb exporter base directory
      ansible.builtin.file:
        dest: '{{ item }}'
        state: directory
        owner: root
        group: root
      loop:
        - '{{ mongodb_prometheus_exporter_home }}'
        - '{{ mongodb_prometheus_exporter_dist_dir }}'

    - name: Download the prometheus mongodb exporter
      ansible.builtin.get_url:
        url: '{{ mongodb_prometheus_exporter_download_url }}'
        dest: /srv/

    - name: Unarchive the prometheus distribution
      ansible.builtin.unarchive:
        src: '/srv/{{ mongodb_prometheus_exporter_file }}'
        dest: '{{ mongodb_prometheus_exporter_dist_dir }}'
        remote_src: yes
        owner: root
        group: root
      args:
        creates: '{{ mongodb_prometheus_exporter_dist_dir }}/{{ mongodb_prometheus_exporter_dir }}/mongodb_exporter'
      notify: Restart mongodb exporter

    - name: Install the prometheus node exporter upstart script
      ansible.builtin.template:
        src: mongodb_exporter.upstart.j2
        dest: /etc/init/mongodb_exporter.conf
        mode: 0644
        owner: root
        group: root
      when: ansible_service_mgr != 'systemd'
      notify: Restart mongodb exporter

    - name: Install the prometheus mongodb exporter systemd unit
      ansible.builtin.template:
        src: mongodb_exporter.service.j2
        dest: /etc/systemd/system/mongodb_exporter.service
        mode: 0644
        owner: root
        group: root
      when: ansible_service_mgr == 'systemd'
      notify:
        - Reload the systemd data
        - Restart mongodb exporter

    - ansible.builtin.meta: flush_handlers

    - name: Ensure that prometheus mongodb_exporter is started and enabled
      ansible.builtin.service:
        name: mongodb_exporter
        state: started
        enabled: yes

  when: mongodb_prometheus_exporter_enabled
  tags: [ 'mongodb', 'prometheus', 'mongodb_prometheus' ]

- name: No mongodb exporter
  block:
  - name: Ensure that prometheus mongodb_exporter is stopped and disabled
    ansible.builtin.service:
      name: mongodb_exporter
      state: stopped
      enabled: no

  when: not mongodb_prometheus_exporter_enabled
  tags: [ 'mongodb', 'prometheus', 'mongodb_prometheus' ]