Regex Filter playbook to process patterns for hostnames

gistfile1.txt

##example
---
- name: Regex Processing for hostnames
  hosts: localhost
  connection: local
  gather_facts: false
  vars:
    eda_input: "{{ ansible_eda.event.payload.text }}"  # access event payload
    regex_pattern: '\b(\w+\.mydomain\.com)\b'          # can supply via vars.yml

  tasks:

    - name: Extract switch name from text
      set_fact:
       cacheable: yes
       switch_devices: "{{ eda_input | regex_findall(regex_pattern) }}"
       regex_proc: done