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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# vim: expandtab:tabstop=4:shiftwidth=4
'''
oo_option lookup plugin for openshift-ansible
Usage:
- debug:
msg: "{{ lookup('oo_option', '<key>') | default('<default_value>', True) }}"
This returns, by order of priority:
* if it exists, the `cli_<key>` ansible variable. This variable is set by `bin/cluster --option <key>=<value> …`
* if it exists, the envirnoment variable named `<key>`
* if none of the above conditions are met, empty string is returned
'''
from ansible.utils import template
import os
# Reason: disable too-few-public-methods because the `run` method is the only
# one required by the Ansible API
# Status: permanently disabled
# pylint: disable=too-few-public-methods
class LookupModule(object):
''' oo_option lookup plugin main class '''
# Reason: disable unused-argument because Ansible is calling us with many
# parameters we are not interested in.
# The lookup plugins of Ansible have this kwargs “catch-all” parameter
# which is not used
# Status: permanently disabled unless Ansible API evolves
# pylint: disable=unused-argument
def __init__(self, basedir=None, **kwargs):
''' Constructor '''
self.basedir = basedir
# Reason: disable unused-argument because Ansible is calling us with many
# parameters we are not interested in.
# The lookup plugins of Ansible have this kwargs “catch-all” parameter
# which is not used
# Status: permanently disabled unless Ansible API evolves
# pylint: disable=unused-argument
def run(self, terms, inject=None, **kwargs):
''' Main execution path '''
try:
terms = template.template(self.basedir, terms, inject)
# Reason: disable broad-except to really ignore any potential exception
# This is inspired by the upstream "env" lookup plugin:
# https://github.com/ansible/ansible/blob/devel/v1/ansible/runner/lookup_plugins/env.py#L29
# pylint: disable=broad-except
except Exception:
pass
if isinstance(terms, basestring):
terms = [terms]
ret = []
for term in terms:
option_name = term.split()[0]
cli_key = 'cli_' + option_name
if inject and cli_key in inject:
ret.append(inject[cli_key])
elif option_name in os.environ:
ret.append(os.environ[option_name])
else:
ret.append('')
return ret
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