---
# Copyright 2016, 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: Create LXC cache dir
  file:
    path: "{{ cache_path_fact }}"
    state: "directory"
    recurse: true

- name: Remove existing cache archive
  file:
    path: "{{ cache_path_fact }}/rootfs.tar.xz"
    state: "absent"

# This is using a shell command because the ansible archive module does not
# provide for the options needed to properly create an LXC image archive.
- name: Create lxc image
  shell: |
    tar -Opc -C {{ lxc_image_cache_path }} . | {{ lxc_xz_bin }} -T 0 -{{ lxc_image_compression_ratio }} -c - > rootfs.tar.xz
  args:
    chdir: "{{ cache_path_fact }}/"
  tags:
    - skip_ansible_lint

- name: Drop container meta-data
  template:
    src: "meta-data/{{ item }}"
    dest: "{{ cache_path_fact }}/{{ item }}"
    owner: "root"
    group: "root"
    mode: "0644"
  with_items:
    - config
    - config.5
    - create-message
    - expiry
    - templates

- name: Set expiry
  copy:
    content: "{{ cache_time | int + lxc_image_cache_expiration | community.general.to_seconds | int }}"
    dest: "{{ cache_path_fact }}/expiry"
    mode: "0644"

- name: Set build ID
  copy:
    content: "{{ cache_time | int }}"
    dest: "{{ cache_path_fact }}/build_id"
    mode: "0644"

- name: Create base container to use for containers with {{ lxc_container_backing_store }}
  lxc_container:
    name: "{{ lxc_container_base_name }}"
    template: "download"
    state: stopped
    backing_store: "{{ (lxc_container_backing_store == 'overlayfs') | ternary('dir', lxc_container_backing_store) }}"
    zfs_root: "{{ (lxc_container_backing_store == 'zfs') | ternary(lxc_container_zfs_root_name, omit) }}"
    template_options: "{{ lxc_cache_download_template_options }}"
  register: cache_download
  retries: 3
  delay: 10
  until: cache_download is success

- name: Set the qgroup limits for btrfs
  when:
    - lxc_container_backing_store == 'btrfs'
  block:
    - name: Set the qgroup size|compression limits on machines
      command: "btrfs qgroup limit {{ item }} /var/lib/lxc/{{ lxc_container_base_name }}"
      changed_when: false
      with_items:
        - "-e {{ lxc_host_machine_qgroup_space_limit }}"
        - "-c {{ lxc_host_machine_qgroup_compression_limit }}"
      when:
        - not lxc_host_machine_quota_disabled
  rescue:
    - name: Notice regarding quota system
      debug:
        msg: >-
          There was an error processing the setup of qgroups. Check the system
          to ensure they're available otherwise disable the quota system by
          setting `lxc_host_machine_quota_disabled` to true.