---
- name: Ensure image download directory exists
  file:
    path: "{{ ipa_images_cache_path }}"
    state: directory
    owner: "{{ ansible_user }}"
    group: "{{ ansible_user }}"
  become: True

- name: Ensure Ironic Python Agent (IPA) images are downloaded
  get_url:
    url: "{{ item.url }}"
    dest: "{{ ipa_images_cache_path }}/{{ item.filename }}"
  with_items:
    - url: "{{ ipa_images_kernel_url }}"
      filename: "{{ ipa_images_kernel_name }}"
    - url: "{{ ipa_images_ramdisk_url }}"
      filename: "{{ ipa_images_ramdisk_name }}"
  when: item.url != None

- name: Compute the MD5 checksum of the Ironic Python Agent (IPA) images
  stat:
    path: "{{ ipa_images_cache_path }}/{{ item }}"
    get_md5: True
    get_checksum: False
    mime: False
  with_items:
    - "{{ ipa_images_kernel_name }}"
    - "{{ ipa_images_ramdisk_name }}"
  register: ipa_images_checksum

# Note that setting this via a play or task variable seems to not
# evaluate the Jinja variable reference, so we use set_fact.
- name: Update the Ansible python interpreter fact to point to the virtualenv
  set_fact:
    ansible_python_interpreter: "{{ ipa_images_venv }}/bin/python"

# To support updating the IPA image, we check the MD5 sum of the cached image
# files, and compare with the images in Glance (if there are any).

- name: Gather facts about Ironic Python Agent (IPA) kernel image
  os_image_facts:
    auth_type: "{{ ipa_images_openstack_auth_type }}"
    auth: "{{ ipa_images_openstack_auth }}"
    image: "{{ ipa_images_kernel_name }}"

- name: Set a fact containing the Ironic Python Agent (IPA) kernel image checksum
  set_fact:
    ipa_images_kernel_checksum: "{{ openstack_image.checksum }}"
  when: openstack_image != None

- name: Gather facts about Ironic Python Agent (IPA) ramdisk image
  os_image_facts:
    auth_type: "{{ ipa_images_openstack_auth_type }}"
    auth: "{{ ipa_images_openstack_auth }}"
    image: "{{ ipa_images_ramdisk_name }}"

- name: Set a fact containing the Ironic Python Agent (IPA) ramdisk image checksum
  set_fact:
    ipa_images_ramdisk_checksum: "{{ openstack_image.checksum }}"
  when: openstack_image != None

- name: Ensure Ironic Python Agent (IPA) images are removed from Glance
  os_image:
    auth_type: "{{ ipa_images_openstack_auth_type }}"
    auth: "{{ ipa_images_openstack_auth }}"
    name: "{{ item.name }}"
    state: absent
  with_items:
    - name: "{{ ipa_images_kernel_name }}"
      checksum: "{{ ipa_images_checksum.results[0].stat.md5 }}"
      glance_checksum: "{{ ipa_images_kernel_checksum | default }}"
    - name: "{{ ipa_images_ramdisk_name }}"
      checksum: "{{ ipa_images_checksum.results[1].stat.md5 }}"
      glance_checksum: "{{ ipa_images_ramdisk_checksum | default }}"
  when:
    - item.glance_checksum != None
    - item.checksum != item.glance_checksum

- name: Ensure Ironic Python Agent (IPA) images are registered with Glance
  os_image:
    auth_type: "{{ ipa_images_openstack_auth_type }}"
    auth: "{{ ipa_images_openstack_auth }}"
    name: "{{ item.name }}"
    container_format: "{{ item.format }}"
    disk_format: "{{ item.format }}"
    state: present
    filename: "{{ ipa_images_cache_path }}/{{ item.name }}"
  with_items:
    - name: "{{ ipa_images_kernel_name }}"
      format: aki
    - name: "{{ ipa_images_ramdisk_name }}"
      format: ari

# This variable is unset before we set it, and it does not appear to be
# possible to unset a variable in Ansible.
- name: Set a fact to reset the Ansible python interpreter
  set_fact:
    ansible_python_interpreter: /usr/bin/python