---
- name: Set facts for centos image builds
  set_fact:
    centos_image_file: ~/centos-download.qcow2
    centos_initramfs_file: ~/centos.initramfs
    centos_kernel_file: ~/centos.kernel
    centos_partition_file: ~/centos-root.qcow2
    centos_image_url: https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2.xz

- name: Install guestfish
  package:
    name: libguestfs-tools
    state: present
  become: true

- name: Make kernel files readable (workaround for Ubuntu)
  shell: chmod 0644 /boot/vmlinuz-*
  become: true

- name: Download the CentOS image
  get_url:
    url: "{{ centos_image_url }}"
    dest: "{{ centos_image_file }}.xz"
  register: centos_image_result
  until: centos_image_result is succeeded
  retries: 3
  delay: 10

- name: Unpack the CentOS image
  command: xz -d {{ centos_image_file }}.xz

- name: Print filesystems from the image
  command: virt-filesystems -a {{ centos_image_file }} -l --extra --block-devices

- name: Upload the CentOS whole-disk image
  command: >
      openstack image create --disk-format qcow2
      --public --file {{ centos_image_file }}
      {{ centos_glance_whole_disk_image }}
  environment:
    OS_CLOUD: devstack-admin
  when: centos_glance_whole_disk_image is defined

- name: Create a temporary directory for extraction
  tempfile:
    state: directory
    suffix: boot
  register: temp_dir

- name: Extract kernel/ramdisk from the image
  command: >
      virt-get-kernel -a {{ centos_image_file }}
      -o {{ temp_dir.path }} --unversioned-names

- name: Upload the CentOS kernel image
  command: >
      openstack image create --disk-format aki --container-format aki \
      --public --file {{ temp_dir.path }}/vmlinuz -f value -c id
      {{ centos_glance_kernel_image }}
  register: centos_kernel_id
  failed_when: centos_kernel_id.stdout == ""
  environment:
    OS_CLOUD: devstack-admin
  when: centos_glance_kernel_image is defined

- name: Upload the CentOS initramfs image
  command: >
      openstack image create --disk-format ari --container-format ari \
      --public --file {{ temp_dir.path }}/initramfs -f value -c id
      {{ centos_glance_initramds_image }}
  register: centos_initramfs_id
  failed_when: centos_initramfs_id.stdout == ""
  environment:
    OS_CLOUD: devstack-admin
  when: centos_glance_initramds_image is defined

- name: Delete the kernel and ramdisk image files
  file:
    state: absent
    path: "{{ temp_dir.path }}/{{ item }}"
  with_items:
    - vmlinuz
    - initramfs

- name: Extract the root file system
  command: virt-tar-out -a {{ centos_image_file }} / {{ temp_dir.path }}/root.tar

- name: Delete the whole-disk image file
  file:
    state: absent
    path: "{{ centos_image_file }}"

- name: Extract /etc/fstab and /etc/selinux/config
  command: >
      tar -f {{ temp_dir.path }}/root.tar
      -C {{ temp_dir.path }} --extract {{ item }}
  with_items:
    - ./etc/fstab
    - ./etc/selinux/config

- name: Remove /etc/fstab and /etc/selinux/config from the archive
  command: tar -f {{ temp_dir.path }}/root.tar --delete {{ item }}
  with_items:
    - ./etc/fstab
    - ./etc/selinux/config

- name: Edit /etc/fstab to replace UUID with LABEL
  command: sed -i 's/UUID=[^ ]* /\/dev\/vda2 /' {{ temp_dir.path}}/etc/fstab

- name: Rewrite /etc/selinux/config to disable selinux
  copy:
    dest: "{{ temp_dir.path }}/etc/selinux/config"
    content: "SELINUX=disabled"

- name: Add edited /etc/fstab and /etc/selinux/config back
  command: >
      tar -f {{ temp_dir.path }}/root.tar
      -C {{ temp_dir.path }}
      --append {{ item }} --owner root --group root
  with_items:
    - ./etc/fstab
    - ./etc/selinux/config

- name: Pack the root file system into a partition image
  command: virt-make-fs {{ temp_dir.path }}/root.tar {{ centos_partition_file }}

- name: Print filesystems from the image
  command: virt-filesystems -a {{ centos_partition_file }} -l --extra --block-devices

- name: Remove the temporary directory
  file:
    state: absent
    path: "{{ temp_dir.path }}"

- name: Upload the CentOS partition image
  command: >
      openstack image create --disk-format qcow2
      --public --file {{ centos_partition_file }}
      --property kernel_id={{ centos_kernel_id.stdout }}
      --property ramdisk_id={{ centos_initramfs_id.stdout }}
      {{ centos_glance_root_image }}
  environment:
    OS_CLOUD: devstack-admin
  when: centos_glance_root_image is defined

- name: Remove the partition image file
  file:
    state: absent
    path: "{{ centos_partition_file }}"