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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
# (c) 2013, Steven Dossett <sdossett@panath.com>
# (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import annotations
DOCUMENTATION = """
name: inventory_hostnames
author:
- Michael DeHaan
- Steven Dossett (!UNKNOWN) <sdossett@panath.com>
version_added: "1.3"
short_description: list of inventory hosts matching a host pattern
description:
- "This lookup understands 'host patterns' as used by the C(hosts:) keyword in plays
and can return a list of matching hosts from inventory"
notes:
- this is only worth for 'hostname patterns' it is easier to loop over the group/group_names variables otherwise.
"""
EXAMPLES = """
- name: show all the hosts matching the pattern, i.e. all but the group www
ansible.builtin.debug:
msg: "{{ item }}"
with_inventory_hostnames:
- all:!www
"""
RETURN = """
_hostnames:
description: list of hostnames that matched the host pattern in inventory
type: list
"""
from ansible.errors import AnsibleError
from ansible.inventory.manager import InventoryManager
from ansible.plugins.lookup import LookupBase
class LookupModule(LookupBase):
def run(self, terms, variables=None, **kwargs):
manager = InventoryManager(self._loader, parse=False)
for group, hosts in variables['groups'].items():
manager.add_group(group)
for host in hosts:
manager.add_host(host, group=group)
try:
return [h.name for h in manager.get_hosts(pattern=terms)]
except AnsibleError:
return []
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