Ansible sorting doesn't pick the highest number - linux

Question

I'm trying to get few docker tags from Artifactory docker api and pick the latest tag in the list using Anisble sort but when I try sort its picking the single digit value over double digits ( example 9 over 15)
here are some example tags output list
the api output looks similar to this:
registered to tag_output
{
1.1.0-ab.7-9,
1.1.0-ab.8-10,
1.1.0-ab.9-12,
}
With the regex it picks up last char in the string after "-" which i'm trying to sort.
https://regex101.com/r/O7xH4u/1
using the same regex in the Ansible tasks when doing the sort, ansible is picking 1.1.0-ab.7-9 as it thinks 9 is greater then 12 (however, if we add '0' before 9 then it picks 12)
- name: Get tags
command: curl -u "{{artifactoryUser}}:{{artifactoryPwd}}" https://artifactory-mars.cd.genesaas.io/v2/xxxx/releases-candidates/1.1.0/from-service/tags/list
register: tag_output
- name: SetFact TAG
set_fact:
DCM_TAG: "{{ _dict|dict2items| sort(attribute='key')| map(attribute='value')|last }}"
vars:
_index: "{{ (tag_output.stdout | from_json).tags|map('regex_replace', '^(.*)-(.*)$', '\\2')|list }}"
_dict: "{{ dict(_index|zip((tag_output.stdout | from_json).tags)) }}"
output:
TASK [SetFact TAG] **********************************************************************************************************************************************************
ok: [localhost] => {"ansible_facts": {"DCM_TAG": "1.1.0-ab.7-9"}, "changed": false}
but I need expected output:
1.1.0-ab.9-12

Answer 1

Put the tags into a list
tags_list: "{{ tag_output.keys()|list }}"
gives
tags_list:
- 1.1.0-ab.7-9
- 1.1.0-ab.8-10
- 1.1.0-ab.9-12
Parse the attributes
- set_fact:
tags: "{{ tags|d([]) + [{'tag': item,
'major': major|int,
'minor': minor|int}] }}"
loop: "{{ tags_list }}"
vars:
ext: "{{ item|split('.')|last }}"
major: "{{ ext|split('-')|first }}"
minor: "{{ ext|split('-')|last }}"
gives
tags:
- major: 7
minor: 9
tag: 1.1.0-ab.7-9
- major: 8
minor: 10
tag: 1.1.0-ab.8-10
- major: 9
minor: 12
tag: 1.1.0-ab.9-12
Now, find the largest major and minor, and select the tag
- debug:
msg: |
Latest version: {{ tags_max.major }}-{{ tags_max.minor }}
DCM_TAG: {{ DCM_TAG }}
vars:
major_max: "{{ tags|map(attribute='major')|max }}"
tags_major_max: "{{ tags|selectattr('major', 'eq', major_max|int) }}"
minor_max: "{{ tags_major_max|map(attribute='minor')|max }}"
tags_max: "{{ tags_major_max|selectattr('minor', 'eq', minor_max|int)|first }}"
DCM_TAG: "{{ tags_max.tag }}"
gives
Latest version: 9-12
DCM_TAG: 1.1.0-ab.9-12
Note
Testing multiple minors, e.g.
tag_output:
{
1.1.0-ab.7-9,
1.1.0-ab.8-10,
1.1.0-ab.9-10,
1.1.0-ab.9-12,
1.1.0-ab.9-7,
}
gives the correct result too
Latest version: 9-12
DCM_TAG: 1.1.0-ab.9-12