Elegant way to append to a JSON file

playbook.yaml

---
# Example of constructing & appending to a JSON file

# Required JSON payload:
#
# [
#   {
#     "id": "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
#     "type": "host"
#   },
#   {
#     "id": "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb",
#     "type": "host"
#   }
# ]

- hosts: localhost
  become: no
  vars:
    type: "host"
  tasks:
    - name: 1.0 | Set the initial fact `uids`
      set_fact:
        uids:
          - "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
          - "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb"

    - name: 2.0 | Construct the `data`
      set_fact:
        data: "{{ ( data | default([]) ) + [ { 'uid': item, 'type': type } ] }}"
      with_items: "{{ uids }}"

# The `data` will look like:
#
# [
#   {
#     "type": "host",
#     "uid": "aaa-aaaaaa-aaaaaaa-aaaaa"
#   },
#   {
#     "type": "host",
#     "uid": "bbb-bbbbbb-bbbbbbb-bbbbb"
#   }
# ]

    - name: 3.0 | Set another fact `add_uids`
      set_fact:
        add_uids:
          - "cccccccc-cccc-cccc-cccc-cccccccccccc"
          - "dddddddd-dddd-dddd-dddd-dddddddddddd"

    - name: 4.0 | Construct the `new_data`
      set_fact:
        new_data: "{{ ( new_data | default([]) ) + [ { 'uid': item, 'type': type } ] }}"
      with_items: "{{ add_uids }}"

    - name: 5.0 | Append `add_uids` to the initial `uids`
      set_fact:
        combined: "{{ data + new_data }}"

# The `combined` will look like:
#
# [
#   {
#     "type": "host",
#     "uid": "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
#   },
#   {
#     "type": "host",
#     "uid": "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb"
#   },
#   {
#     "type": "host",
#     "uid": "cccccccc-cccc-cccc-cccc-cccccccccccc"
#   },
#   {
#     "type": "host",
#     "uid": "dddddddd-dddd-dddd-dddd-dddddddddddd"
#   }
# ]

    - name: 6.0 | Patch hosts with uids
      uri:
        url: "https://{{ cloud_redhat }}/compliance/v1/profiles/{{ profile_id }}"
        method: 'PATCH'
        user: "{{ insight_username }}"
        password: "{{ insight_password }}"
        force_basic_auth: true
        validate_certs: 'no'
        status_code: "200"
        return_content: 'yes'
        body_format: 'json'
        body: "{\"data\":{\"relationships\": {\"hosts\": {\"data\": {{ combined }} }}}}"
      environment:
          http_proxy: http://proxy:80
          https_proxy: http://proxy:80