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[docker] support the lookup of images by digest (#56649)

* [docker] images: add support for lookup by sha256 digest

Signed-off-by: Jakob Ackermann <das7pad@outlook.com>

* [tests] docker image by digest: work on a minimal test case

Signed-off-by: Jakob Ackermann <das7pad@outlook.com>

* [docker] group branch conditions per lookup

Co-Authored-By: Felix Fontein <felix@fontein.de>

* [misc] add a news fragment for the added digest lookup for docker images

Signed-off-by: Jakob Ackermann <das7pad@outlook.com>
This commit is contained in:
Jakob Ackermann 2019-05-21 08:54:06 +02:00 committed by ansibot
parent 8e1dd58c2b
commit 3b4b2e5021
3 changed files with 49 additions and 1 deletions

View file

@ -0,0 +1,4 @@
bugfixes:
- docker_container - Add support for image lookups by digest. Fixes the detection of digest changes.
- docker_image - Add support for image lookups by digest. Fixes the detection of digest changes.
- docker_image_info - Add support for image lookups by digest. Fixes the detection of digest changes.

View file

@ -639,10 +639,12 @@ class AnsibleDockerClient(Client):
images = response images = response
if tag: if tag:
lookup = "%s:%s" % (name, tag) lookup = "%s:%s" % (name, tag)
lookup_digest = "%s@%s" % (name, tag)
images = [] images = []
for image in response: for image in response:
tags = image.get('RepoTags') tags = image.get('RepoTags')
if tags and lookup in tags: digests = image.get('RepoDigests')
if (tags and lookup in tags) or (digests and lookup_digest in digests):
images = [image] images = [image]
break break
return images return images

View file

@ -76,3 +76,45 @@
- create_2 is not changed - create_2 is not changed
- create_3 is changed - create_3 is changed
- create_4 is not changed - create_4 is not changed
- name: set Digests
set_fact:
digest_hello_world_2016: 0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9
digest_hello_world_2019: 2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
- name: Create container with hello-world image via old digest
docker_container:
image: "hello-world@sha256:{{ digest_hello_world_2016 }}"
name: "{{ cname }}"
state: present
force_kill: yes
register: digest_1
- name: Create container with hello-world image via old digest (idempotent)
docker_container:
image: "hello-world@sha256:{{ digest_hello_world_2016 }}"
name: "{{ cname }}"
state: present
force_kill: yes
register: digest_2
- name: Update container with hello-world image via new digest
docker_container:
image: "hello-world@sha256:{{ digest_hello_world_2019 }}"
name: "{{ cname }}"
state: present
force_kill: yes
register: digest_3
- name: Cleanup
docker_container:
name: "{{ cname }}"
state: absent
force_kill: yes
diff: no
- assert:
that:
- digest_1 is changed
- digest_2 is not changed
- digest_3 is changed