---

- name: Uses the "select" filter and the "search" test to filter a list
  gather_facts: no
  hosts: localhost
  vars: 
    input:
    # This is a sample output of the "getent ahosts openshift39.openshift.test" command
    # 
    # - command: openshift39.openshift.test
    #   register: getent
    #
    # => this is getent.stdout_lines
    #
    - 192.168.23.175  STREAM openshift39.openshift.test
    - 192.168.23.175  DGRAM
    - 192.168.23.175  RAW
    - 192.168.23.176  STREAM 
    - 192.168.23.176  DGRAM  
    - 192.168.23.176  RAW   
  tasks:
  - block:
    - debug:
        var: output
    - assert:
        that:
        - output|length == 2
        - output|first == "192.168.23.175"
        - output|last == "192.168.23.176"
    vars:
      output: '{{ input|select(''search'', ''\bSTREAM\b'')|map(''regex_replace'', ''^(\S+)\s+STREAM\b.*$'', ''\1'')|list }}'