---
- name: generate apt pin file for exporter-chrony package
  when: prometheus_exporter_chrony_version is defined
  copy:
    dest: "/etc/apt/preferences.d/prom-exporter-chrony.pref"
    content: |
      Package: prom-exporter-chrony
      Pin: version {{ prometheus_exporter_chrony_version }}-1
      Pin-Priority: 1001

- name: remove apt pin file for exporter-chrony package
  when: prometheus_exporter_chrony_version is not defined
  file:
    path: "/etc/apt/preferences.d/prom-exporter-chrony.pref"
    state: absent

- name: install apt packages
  apt:
    name: "prom-exporter-chrony{% if prometheus_exporter_chrony_version is defined %}={{ prometheus_exporter_chrony_version }}-1{% endif %}"
    state: present
    allow_downgrade: yes
  notify: restart prometheus-chrony-exporter

- name: generate systemd service unit
  template:
    src: service.j2
    dest: /etc/systemd/system/prometheus-chrony-exporter.service
  notify: restart prometheus-chrony-exporter

- name: make sure prometheus-chrony-exporter is enabled and started
  systemd:
    name: prometheus-chrony-exporter.service
    daemon_reload: yes
    state: started
    enabled: yes

- name: register exporter
  copy:
    content: |
      location = /chrony {
          proxy_pass http://127.0.0.1:9123/metrics;
      }
    dest: /etc/prometheus/exporter/chrony.locations
  notify: reload nginx


## TODO: remove these tasks once all hosts have been migrated
- name: make sure the systemd timer for chrony textfile collector is disabled and stopped
  systemd:
    service: prometheus-node-exporter_chrony.timer
    enabled: no
    state: stopped
  register: result_systemd_stop
  failed_when: "result_systemd_stop is failed and 'Could not find the requested service' not in result_systemd_stop.msg"

- name: remove files from chrony textfile collector
  loop:
  - /etc/systemd/system/prometheus-node-exporter_chrony.timer
  - /etc/systemd/system/prometheus-node-exporter_chrony.service
  - /usr/local/share/prometheus-node-exporter/chrony
  - /var/lib/prometheus-node-exporter/textfile-collector/chrony.prom
  file:
    path: "{{ item }}"
    state: absent
  notify: reload systemd