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# Copyright (c) 2021 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
DOCUMENTATION = '''
inventory: cache_host
short_description: add a host to inventory and cache it
description: add a host to inventory and cache it
extends_documentation_fragment:
- inventory_cache
options:
plugin:
required: true
description: name of the plugin (cache_host)
'''
from ansible.plugins.inventory import BaseInventoryPlugin, Cacheable
import random
class InventoryModule(BaseInventoryPlugin, Cacheable):
NAME = 'cache_host'
def verify_file(self, path):
if not path.endswith(('cache_host.yml', 'cache_host.yaml',)):
return False
return super(InventoryModule, self).verify_file(path)
def parse(self, inventory, loader, path, cache=None):
super(InventoryModule, self).parse(inventory, loader, path)
self._read_config_data(path)
cache_key = self.get_cache_key(path)
# user has enabled cache and the cache is not being flushed
read_cache = self.get_option('cache') and cache
# user has enabled cache and the cache is being flushed
update_cache = self.get_option('cache') and not cache
host = None
if read_cache:
try:
host = self._cache[cache_key]
except KeyError:
# cache expired
update_cache = True
if host is None:
host = 'testhost{0}'.format(random.randint(0, 50))
self.inventory.add_host(host, 'all')
if update_cache:
self._cache[cache_key] = host
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