---
# Copyright 2014, Rackspace US, Inc.
#
# 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: "Ensure kernel module(s)"
  modprobe:
    name: "{{ item }}"
  with_items: openstack_host_kernel_modules
  when: openstack_host_kernel_modules is defined and item != ''
  tags:
    - openstack-host-kernel-modules

- name: "Ensure kernel module(s) loaded at boot"
  lineinfile:
    dest: /etc/modules
    line: "{{ item }}"
  with_items: openstack_host_kernel_modules
  when: openstack_host_kernel_modules is defined and item != ''
  tags:
    - openstack-host-kernel-modules

- name: get kernel release
  command: "uname -r"
  register: uname
  tags:
    - openstack-host-specific-kernel-modules

- name: check how kernel modules are implemented (statically builtin, dynamic, not set)
  shell: grep {{ item.pattern }} /boot/config-{{ uname.stdout}}
  register: modules
  with_items: openstack_host_specific_kernel_modules
  when:
    - openstack_host_specific_kernel_modules is defined
    - inventory_hostname in groups["{{ item.group }}"]
  ignore_errors: yes
  tags:
    - openstack-host-specific-kernel-modules

- name: fail if a specific kernel module is not set
  fail:
    msg: "{{ item['stdout'] }}"
  when:
    - modules['changed'] | bool
    - "'is not set' in item['stdout']"
  with_items: modules["results"]
  tags:
    - openstack-host-specific-kernel-modules

- name: fail if a specific pattern is not valid
  fail:
    msg: "'pattern:' {{ item['item']['pattern'] }} 'is not valid. Search results for pattern lead to:' {{ item['stdout'] }}"
  when:
    - modules['changed'] | bool
    - "'=y' not in item['stdout']"
    - "'=m' not in item['stdout']"
  with_items: modules["results"]
  tags:
    - openstack-host-specific-kernel-modules

- name: "Ensure dynamic specific kernel module(s) are loaded"
  modprobe:
    name: "{{ item['item']['name'] }}"
  with_items: modules["results"]
  when:
    - modules['changed'] | bool
    - inventory_hostname in groups[item["item"]["group"]]
    - "'=m' in item['stdout']"
  tags:
    - openstack-host-specific-kernel-modules

- name: "Ensure dynamic specific kernel module(s) loaded at boot"
  lineinfile:
    dest: /etc/modules
    line: "{{ item['item']['name'] }}"
  with_items: modules["results"]
  when:
    - modules['changed'] | bool
    - inventory_hostname in groups[item["item"]["group"]]
    - "'=m' in item['stdout']"
  tags:
    - openstack-host-specific-kernel-modules