ansible - example of parsing a url

00_play.yml

---
- hosts: localhost
  gather_facts: False
  connection: local
  vars: 
    myvar: 'http://www.example.domain.com:9090'
  tasks:
    - name: not as good as a custom filter
      debug:
        msg: "{{ myvar.rpartition('//')[2].split(':') }}"

    - name: use a custom filter
      debug:
        msg: "{{ myvar | parse_url }}"

01_ansible.cfg

[defaults]
filter_plugins = plugins/filter

03_custom.py

# plugins/filter/custom.py
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

from urlparse import urlparse

def parse_url(url):
    """return a dict, of the parsed elements"""
    result = {}

    o = urlparse(url)

    result['scheme'] = o.scheme
    result['port'] = o.port
    result['url'] = o.geturl()
    result['path'] = o.path
    result['netloc'] = o.netloc
    result['query'] = o.query
    result['hostname'] = o.hostname

    return result


class FilterModule(object):

    def filters(self):
        return {
                "parse_url": parse_url
        }

04_output

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

TASK [not as good as a custom filter] ******************************************************************************************************************************************************************************************************************************************
ok: [localhost] => {
    "changed": false,
    "msg": [
        "www.example.domain.com",
        "9090"
    ]
}

TASK [use a custom filter] *****************************************************************************************************************************************************************************************************************************************************
ok: [localhost] => {
    "changed": false,
    "msg": {
        "hostname": "www.example.domain.com",
        "netloc": "www.example.domain.com:9090",
        "path": "",
        "port": 9090,
        "query": "",
        "scheme": "http",
        "url": "http://www.example.domain.com:9090"
    }
}

PLAY RECAP *********************************************************************************************************************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0

There appears to be a built in filter to do this https://docs.ansible.com/ansible/latest/user_guide/playbooks_filters.html#url-split-filter