Comparing dictionaries in Ansible - ansible

Question

Im trying to have a task that asserts two dictionaries defined as facts.
The following are two dictionaries in which the keys have the disk space that is available or required per hypervisor.
"available": {
"hypervisor-01": 2321,
"hypervisor-02": 46
}
"required": {
"hypervisor-01": "200",
"hypervisor-02": "75"
}
The previous facts assert should fail as hypervisor-02 requires more than what is available.
"available": {
"hypervisor-01": 2321,
"hypervisor-02": 46
}
"required": {
"hypervisor-01": "200",
"hypervisor-02": "5"
}
The previous dictionaries should pass as all the requirements are fulfilled. If at least one condition is not meet it should fail (there might be many hypervisors).

Answer 1

Try this
- set_fact:
ka: "{{ available.keys()|list }}"
kr: "{{ required.keys()|list }}"
- assert:
that: kr|difference(ka)|length == 0
fail_msg: Required hypervisor not available.
- assert:
that: sum_max == sum_avail
fail_msg: Required space not available.
vars:
va: "{{ kr|map('extract', available)|list }}"
vr: "{{ kr|map('extract', required)|list }}"
sum_max: "{{ vr|zip(va)|map('max')|sum }}"
sum_avail: "{{ va|sum }}"

Answer 2

Please see below playbook. I have added 2 more conditions that may not be applicable to your case (in case available or required don't have the same keys).
playbook:
---
- hosts: localhost
gather_facts: false
vars:
available:
hypervisor-01: 2321
hypervisor-02: 46
hypervisor-03: 462
required:
hypervisor-01: 200
hypervisor-02: 75
tasks:
- assert:
that:
- required[item] is defined
- available[item] > required[item]
with_items: "{{ available.keys() | list }}"
output:
TASK [assert] **********************************************************************************************************************************************************************************************************
ok: [localhost] => (item=hypervisor-01) => {
"ansible_loop_var": "item",
"changed": false,
"item": "hypervisor-01",
"msg": "All assertions passed"
}
failed: [localhost] (item=hypervisor-02) => {
"ansible_loop_var": "item",
"assertion": "available[item] > required[item]",
"changed": false,
"evaluated_to": false,
"item": "hypervisor-02",
"msg": "Assertion failed"
}
failed: [localhost] (item=hypervisor-03) => {
"ansible_loop_var": "item",
"assertion": "required[item] is defined",
"changed": false,
"evaluated_to": false,
"item": "hypervisor-03",
"msg": "Assertion failed"
}
PLAY RECAP *************************************************************************************************************************************************************************************************************
localhost : ok=0 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0