---
# Copyright 2019 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

- name: Get the command line args of the node
  command: cat /proc/cmdline
  register: cmdline

# Kernel Args Configuration
- block:
    - name: Ensure the kernel args ( {{ tripleo_kernel_args }} ) is present as TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS
      lineinfile:
        dest: /etc/default/grub
        regexp: '^TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS.*'
        insertafter: '^GRUB_CMDLINE_LINUX.*'
        line: 'TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS=" {{ tripleo_kernel_args }} "'
    - name: Add TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS to the GRUB_CMDLINE_LINUX parameter
      lineinfile:
        dest: /etc/default/grub
        line: 'GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX:+$GRUB_CMDLINE_LINUX }${TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS}"'
        insertafter: '^TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS.*'
    - name: Check grub config paths
      stat:
        path: "{{ item }}"
      register: grub_stat
      loop:
        - /boot/grub2/grub.cfg
        - /boot/efi/EFI/redhat/grub.cfg
        - /boot/efi/EFI/centos/grub.cfg
        - /boot/efi/EFI/fedora/grub.cfg
    - name: Generate grub config
      command: "grub2-mkconfig -o {{ item.stat.path }}"
      when: item.stat.exists|bool
      loop: "{{ grub_stat.results }}"
    - name: Set reboot required fact
      set_fact:
        reboot_required: true
  become: true
  when:
    - cmdline.stdout_lines is defined
    - tripleo_kernel_args|string
    - tripleo_kernel_args not in cmdline.stdout_lines[0]

# Apply DPDK workarounds before reboot
- name: Apply DPDK workarounds
  include_role:
    name: tripleo_ovs_dpdk
    tasks_from: workarounds.yml
  when: reboot_required is defined and reboot_required

# Kernel modules loading
- name: Load type1 IOMMU driver for VFIO on boot
  import_role:
    name: tripleo_module_load
  vars:
    modules:
      - name: vfio_iommu_type1
  when: tripleo_kernel_args is search("iommu")

- name: Reboot and workaround block
  include_tasks: reboot.yaml
  when:
    - reboot_required is defined and reboot_required
    - not tripleo_kernel_defer_reboot|bool