Ansible form the list or separate the dictionary - ansible

Question

I have the below dicotionary value
{
"1application": "abc",
"2service": "def",
"3service": ghi",
"4application": "jkl",
"5service": "mno",
"6application": "abc",
"7service": "def",
"8service": ghi"
}
From this I have to form a list like below, starting from first application to next application I have to form one list, and so on
[
"1application": "abc",
"2service": "def",
"3service": ghi",
]
[
"4application": "jkl",
"5service": "mno",
]
[
"6application": "abc",
"7service": "def",
"8service": ghi"
]

Answer 1

The playbook below
shell> cat playbook.yml
- hosts: localhost
vars:
my_dict:
{"1application": "abc",
"2service": "def",
"3service": "ghi",
"4application": "jkl",
"5service": "mno",
"6application": "abc",
"7service": "def",
"8service": "ghi"}
tasks:
- set_fact:
my_list: "{{ my_list|default([]) +
[dict(my_range_keys|
zip(my_range_keys|
map('extract', my_dict)))] }}"
loop: "{{ my_idxs }}"
loop_control:
extended: true
vars:
my_keys: "{{ my_dict.keys()|list|sort }}"
my_len: "{{ my_keys|length }}"
my_apps: "{{ my_keys|select('match', '^(\\d+)application(.*)$')|list }}"
my_idxs: "{{ my_apps|map('regex_replace', '^(\\d+)(.*)$', '\\1')|list }}"
my_last: "{{ ansible_loop.nextitem|default(my_len|int + 1) }}"
my_range: "{{ range(item|int - 1, my_last|int - 1)|list }}"
my_range_keys: "{{ my_range|map('extract', my_keys)|list }}"
- debug:
var: my_list
gives
my_list:
- 1application: abc
2service: def
3service: ghi
- 4application: jkl
5service: mno
- 6application: abc
7service: def
8service: ghi
The previous solution works only with a single-digit prefix. With multiple digits, the sort function doesn't work anymore. In this case, we have to create the sorted list of the keys. For example, the playbook
shell> cat playbook.yml
- hosts: localhost
vars:
my_dict:
{"1application": "abc",
"2service": "def",
"3service": "ghi",
"4application": "jkl",
"5service": "mno",
"6application": "abc",
"7service": "def",
"8service": "ghi",
"9application": "prs",
"10service": "stu",
"11service": "vxy"}
tasks:
- set_fact:
my_keys_idx: "{{ my_keys_idx|default([]) +
[{'idx': my_idx|int, 'key': item}] }}"
loop: "{{ my_dict.keys()|list }}"
vars:
my_idx: "{{ item|regex_replace('^(\\d+)(.*)$', '\\1') }}"
- debug:
var: my_keys_idx
- set_fact:
my_keys: "{{ my_keys_idx|
sort(attribute='idx')|
map(attribute='key')|
list }}"
- debug:
var: my_keys
gives
my_keys:
- 1application
- 2service
- 3service
- 4application
- 5service
- 6application
- 7service
- 8service
- 9application
- 10service
- 11service
Then the task below works as expected
- set_fact:
my_list: "{{ my_list|default([]) +
[dict(my_range_keys|
zip(my_range_keys|
map('extract', my_dict)))] }}"
loop: "{{ my_idxs }}"
loop_control:
extended: true
vars:
# my_keys: "{{ my_dict.keys()|list|sort }}"
my_len: "{{ my_keys|length }}"
my_apps: "{{ my_keys|select('match', '^(\\d+)application(.*)$')|list }}"
my_idxs: "{{ my_apps|map('regex_replace', '^(\\d+)(.*)$', '\\1')|list }}"
my_last: "{{ ansible_loop.nextitem|default(my_len|int + 1) }}"
my_range: "{{ range(item|int - 1, my_last|int - 1)|list }}"
my_range_keys: "{{ my_range|map('extract', my_keys)|list }}"
- debug:
var: my_list
gives
my_list:
- 1application: abc
2service: def
3service: ghi
- 4application: jkl
5service: mno
- 6application: abc
7service: def
8service: ghi
- 10service: stu
11service: vxy
9application: prs