Mark Goddard ef84890798 Fix IPA image download
The IPA ramdisk and kernel images may be built or downloaded via a URL.
If the latter option is used, any images previously downloaded to
$KOLLA_CONFIG_PATH/config/ironic/ironic-agent.* would previously not be
updated if the image contents change.

This change introduces variables for setting a URL to a file containing
checksums for the images. The algorithm used to compute the checksum is
also configurable (default sha256). This allows us to ensure we are
using the correct version of the image, while avoiding an expensive few
hundred megabyte image download just to check.

If a checksum is not specified, the image will be downloaded every time
to ensure that it is up to date.

Change-Id: I8120518ed98d61f3652f5205ce7ec9f798ab2aa1
Story: 2001660
Task: 6693
2018-10-02 13:30:11 +01:00

43 lines
1.4 KiB
YAML

---
- block:
- block:
- name: Fail if the checksum algorithm is not set
fail:
msg: "Checksum algorithm for image {{ image_download_url }} not set"
when: image_download_checksum_algorithm is none or
image_download_checksum_algorithm == ""
- name: Get the expected checksum
uri:
url: "{{ image_download_checksum_url }}"
return_content: true
register: expected_checksum
when:
- image_download_checksum_url is not none
- image_download_checksum_url != ""
- name: Ensure the image is downloaded
vars:
checksum: "{{ image_download_checksum_algorithm }}:{{ expected_checksum.content.split(' ')[0] }}"
get_url:
url: "{{ image_download_url }}"
dest: "{{ image_download_dest }}"
mode: 0640
# If the file exists locally, its checksum will be compared with this.
checksum: "{{ checksum if expected_checksum is not skipped else omit }}"
# Always download the image if we have no checksum to compare with.
force: "{{ expected_checksum is skipped }}"
backup: true
when:
- image_download_url is not none
- image_download_url != ""
- name: Ensure the local image is copied
copy:
src: "{{ image_download_path }}"
dest: "{{ image_download_dest }}"
mode: 0640
when:
- image_download_path is not none
- image_download_path != ""