---
- name: Create backups directory
  file:
    path: '{{ grafana_backup_dir }}'
    owner: '{{ grafana_backup_user }}'
    group: 'adm'
    state: directory
    mode: 0750

- name: Create backup timer service
  include_role: name=systemd-timer
  vars:
    systemd_timer_description: 'Grafana batabase backup'
    systemd_timer_name: '{{ grafana_service_name }}-backup'
    systemd_timer_user: '{{ grafana_backup_user }}'
    systemd_timer_frequency: '{{ grafana_backup_frequency }}'
    systemd_timer_timeout_sec: '{{ grafana_backup_timeout_sec }}'
    systemd_timer_work_dir: '{{ grafana_backup_dir }}'
    systemd_timer_start_on_creation: true
    systemd_timer_script_content: |
      #!/usr/bin/env bash
      MAX_KEPT={{ grafana_backup_max_kept }}
      DB_PATH="{{ grafana_cont_vol }}/lib/grafana.db"
      TSAMP=$(date -u +%Y%m%d-%H%M%S)
      echo "Saving Grafana database..."
      gzip -c "${DB_PATH}" > "grafana-${TSAMP}.db.gz"
      echo "Cleaning up old archives..."
      rm -vf $(ls -Art | head -n -${MAX_KEPT})