ansible obtain values from changing key - json

Question

I would like to get value from json, but one of the key can be differet.
here is example json
{
"json": {
"id": "9758b1e5-442e-4545-9364-45f28477edfb",
"results": [{
"code": 200,
"host": "localhost",
"message": "no change",
"runTime": 1233,
"tenant": "http-validate-2.usa-dc.com"
}],
"traces": {
"http-validate-2.usa-dc.comCurrent": {
"/Common/10.10.100.10": {
"command": "ltm node"
},
"http-validate-2.usa-dc.comDiff": [{
"command": "ltm virtual",
"kind": "D",
"lhs": {
"default": "yes"
},
"lhsCommand": "ltm virtual",
"path": [
"/http-validate-2.usa-dc.com/app/vs_http-validate-2.usa-dc.com_80",
"properties",
"persist",
"/Common/cookie"
],
"rhsCommand": "ltm virtual",
"tags": [
"tmsh"
]
}]
}
}
}
}
my ansible playbook
tasks:
- name : deploy json file AS3 to F5
debug:
msg: "{{ lookup('file', 'parse.json') }}"
register: atc_AS3_status
- name: debug
debug:
msg: "{{ atc_AS3_status.msg.json['traces']['.*Diff']}}"
I would like to reach key "path" but the key above "http-validate-2.usa-dc.comDiff" can be different like "http-validate-3.can-dc.comDiff" but always finish with Diff

Answer 1

Use json_query, e.g.
- debug:
msg: "{{ json.traces|json_query('*.*[][].path') }}"
should give the list of the paths (there might be more of them)
msg:
- - /http-validate-2.usa-dc.com/app/vs_http-validate-2.usa-dc.com_80
- properties
- persist
- /Common/cookie
Q: "I need path only in the key which ends Diff."
A: JMESPath is not able to search key wildcards, AFAIK. Instead, use select and create the list of the nested keys that match the regex, e.g.
- debug:
msg: "{{ json.traces|json_query('*.keys(#)')|flatten|
select('match', '^.*Diff$')|list }}"
gives
msg:
- http-validate-2.usa-dc.comDiff
Then iterate this list, select path and concatenate the list paths, e.g.
- set_fact:
paths: "{{ paths|d([]) + json.traces|json_query(query) }}"
loop: "{{ json.traces|json_query('*.keys(#)')|flatten|
select('match', '^.*Diff$')|list }}"
vars:
query: '*."{{ item }}"[].path'
gives the list of paths for the keys that match the regex
paths:
- - /http-validate-2.usa-dc.com/app/vs_http-validate-2.usa-dc.com_80
- properties
- persist
- /Common/cookie