set_fact create a list with items - ansible

Question

I have task which calls an API and I register the o/p in a varaible;
- name: Get Object storage account ID
uri:
url: 'https://api.softlayer.com/rest/v3.1/SoftLayer_Network_Storage_Hub_Cleversafe_Account/getAllObjects.json?objectFilter={"username":{"operation":"{{ item }}"}}'
method: GET
user: abxc
password: 66c94c447a6ed8a0cf058774fe38
validate_certs: no
register: old_existing_access_keys_sl
with_items: '{{ info["personal"].sl_cos_accounts }}'
old_existing_access_keys_sl holds:
"old_existing_access_keys_sl.results": [
{
"json": [
{
"accountId": 12345,
"id": 70825621,
"username": "xyz-11"
}
]
},
{
"json": [
{
"accountId": 12345,
"id": 70825621,
"username": "abc-12"
}
]
}
I want to make a list of id's for further processing an tried the following task but this did not work:
- name: Create a list of account ids
set_fact:
admin_usernames = "{{ item.json[0].id | list }}"
with_items: old_existing_access_keys_sl.results
I am not sure if that's even possible. I also tried this:
- name: create a list
set_fact:
foo: "{% set foo = [] %}{% for i in old_existing_access_keys_sl.results %}{{ foo.append(i) }}{% endfor %}"
foo always comes as blank and as a string:
TASK [result] *****************************************************************************************************************************************
ok: [localhost] => {
"foo": ""
}

Answer 1

Given your example data, you can extract a list of ids using the json_query filter, like this:
---
- hosts: localhost
gather_facts: false
vars:
old_existing_access_keys_sl:
results:
[
{
"json": [
{
"accountId": 12345,
"id": 70825621,
"username": "xyz-11"
}
]
},
{
"json": [
{
"accountId": 12345,
"id": 70825621,
"username": "abc-12"
}
]
}
]
tasks:
- debug:
var: old_existing_access_keys_sl|json_query('results[*].json[0].id')
This will output:
TASK [debug] **********************************************************************************************************************************************************************************
ok: [localhost] => {
"old_existing_access_keys_sl|json_query('results[*].json[0].id')": [
70825621,
70825621
]
}
If you want to store these in a new variable, you can replace that debug task with set_fact:
- set_fact:
admin_ids: "{{ old_existing_access_keys_sl|json_query('results[*].json[0].id') }}"
Update
For a list of dictionaries, just change the json_query expression:
- debug:
var: "old_existing_access_keys_sl|json_query('results[*].json[0].{id: id, username: username}')"
For more information, see the jmespath website for documentation and examples.