---
# file: tasks/boot.yml

- name: boot - define config
  set_fact:
    boot_config:
    # set docker optimizations - armbian
    - dest: /boot/armbianEnv.txt
      line: 'docker_optimizations=on'
      regex: ''
    # set clocksource - grub
    - dest: /etc/default/grub
      line: 'GRUB_CMDLINE_LINUX="\1 clocksource=tsc tsc=reliable"'
      regex: '^GRUB_CMDLINE_LINUX="((?!.*clocksource=tsc tsc=reliable).*)"$'
    # set resources limits - grub
    - dest: /etc/default/grub
      line: 'GRUB_CMDLINE_LINUX="\1 cgroup_enable=memory swapaccount=1"'
      regex: '^GRUB_CMDLINE_LINUX="((?!.*cgroup_enable=memory swapaccount=1).*)"$'
    # set clocksource - syslinux
    - dest: /etc/update-extlinux.conf
      line: 'default_kernel_opts="\1 clocksource=tsc tsc=reliable"'
      regex: '^default_kernel_opts="((?!.*clocksource=tsc tsc=reliable).*)"$'
    # set resources limits - syslinux
    - dest: /etc/update-extlinux.conf
      line: 'default_kernel_opts="\1 cgroup_enable=memory swapaccount=1"'
      regex: '^default_kernel_opts="((?!.*cgroup_enable=memory swapaccount=1).*)"$'
    # set clocksource - uboot
    - dest: /boot/cmdline.txt
      line: '\1 clocksource=tsc tsc=reliable'
      regex: '^((?!.*clocksource=tsc tsc=reliable).*)$'
    # set resources limits - uboot
    - dest: /boot/cmdline.txt
      line: '\1 cgroup_enable=memory swapaccount=1'
      regex: '^((?!.*cgroup_enable=memory swapaccount=1).*)$'

- name: boot - stat config file
  with_items: '{{boot_config|default([])}}'
  stat:
    path: '{{item.dest}}'
  changed_when: false
  register: boot_config_stat

- name: boot - update config
  when: item.1.stat.exists
  with_together:
  - '{{boot_config|default([])}}'
  - '{{boot_config_stat.results}}'
  lineinfile:
    backrefs: true
    dest: '{{item.0.dest}}'
    line: '{{item.0.line}}'
    regex: '{{item.0.regex}}'
  become: yes
  notify:
  - update boot - syslinux
  - update boot - grub
  register: boot_config_handler_notify