Sample parser

parse_eos_show_interface.py

from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.network_template import (
    NetworkTemplate,
)

class MyTemplate(NetworkTemplate):
    def __init__(self, lines=None):
        super(MyTemplate, self).__init__(lines=lines, tmplt=self)

    PARSERS = [
        {
            "example": "FastEthernet0/0 is up, line protocol is up",
            "getval": r"(?P<name>\S+) is (?P<admin_status>\S+), line protocol is (?P<oper_status>\S+)",
            "result": {
                "{{ name }}": {
                    "name": "{{ name }}",
                    "status": {
                        "operating": "{{ oper_status }}",
                        "administrative": "{{ admin_status }}"
                    }
                }
            },
            "shared": True,
        },
        {
            "example": "Hardware is Ethernet, address is 5254.0033.62f8 (bia 5254.0033.62f8)",
            "getval": r"\s+Hardware is (?P<hardware>\S+), address is (?P<mac_address>\S+)",
            "result": {
                "{{ name }}": {
                    "hardware": "{{ hardware }}",
                    "mac": "{{ mac_address }}"
                }
            },
        },

    ]

def parse(lines):
    return MyTemplate(lines=lines).parse()

class FilterModule(object):
    def filters(self):
        return {"parse_eos_show_interface": parse}

playbook_output

(venv) ➜  parser_plugin ansible-playbook site.yml
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'

PLAY [localhost] ***************************************************************************************************************************************************

TASK [set_fact] ****************************************************************************************************************************************************
ok: [localhost]

TASK [set_fact] ****************************************************************************************************************************************************
ok: [localhost]

TASK [debug] *******************************************************************************************************************************************************
ok: [localhost] => {
    "result": {
        "Ethernet1": {
            "hardware": "Ethernet",
            "mac": "5254.0033.62f8",
            "name": "Ethernet1",
            "status": {
                "administrative": "up",
                "operating": "up"
            }
        },
        "Ethernet2": {
            "hardware": "Ethernet",
            "mac": "5254.0017.143f",
            "name": "Ethernet2",
            "status": {
                "administrative": "up",
                "operating": "up"
            }
        },
        "Management1": {
            "hardware": "Ethernet",
            "mac": "5254.0074.620b",
            "name": "Management1",
            "status": {
                "administrative": "up",
                "operating": "up"
            }
        }
    }
}

PLAY RECAP *********************************************************************************************************************************************************
localhost                  : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

(venv) ➜  parser_plugin 

site.yml

- hosts: localhost
  gather_facts: False
  tasks:
  - set_fact:
      output: >
        Ethernet1 is up, line protocol is up (connected)
          Hardware is Ethernet, address is 5254.0033.62f8 (bia 5254.0033.62f8)
        Ethernet2 is up, line protocol is up (connected)
          Hardware is Ethernet, address is 5254.0017.143f (bia 5254.0017.143f)
        Management1 is up, line protocol is up (connected)
          Hardware is Ethernet, address is 5254.0074.620b (bia 5254.0074.620b)
  - set_fact:
      result: "{{ output.splitlines()|parse_eos_show_interface }}"
  - debug:
      var: result