Ansible module that takes in a target Java .properties file, and reads it as an Ansible host fact.

read_properties.py

#!/usr/bin/env python
"""
Ansible module that takes in a target Java .properties file, and reads it as
an Ansible host fact.

Example:
  - read_properties: target=~/dists/cluster/test.properties
    register: cluster_props

@author: Jerry Chong <jchong@netbase.com>
"""

from __future__ import print_function
from ansible.module_utils.basic import *  # pylint: disable=I0011,W0401,W0614,W0622
import re


def main():
    """Main function"""

    module = AnsibleModule(
        argument_spec=dict(
            target=dict(required=True, aliases=['name', 'dest'])
        )
    )

    params = module.params
    target = os.path.expanduser(params['target'])

    if not os.path.isfile(target):
        module.fail_json(msg="'target' must be a valid file")

    # read contents
    prop_re = re.compile(r"^(?:#*\s*)(?P<key>[\w.]+)\s*=\s*(?P<val>.*?)?;?\s*$")
    props = {}
    with open(target, "r") as propfile:
        for line in propfile.readlines():
            line = line.strip()
            match = prop_re.match(line)
            if match:
                key, val = match.groups()
                props[key] = val

    module.exit_json(properties=props)


if __name__ == "__main__":
    main()