95 lines
3.2 KiB
Python
95 lines
3.2 KiB
Python
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import collections
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import sys
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from jinja2 import Undefined as j2undefined
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from ansible import constants as C
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from ansible.inventory.host import Host
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from ansible.template import Templar
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__all__ = ['HostVars']
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# Note -- this is a Mapping, not a MutableMapping
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class HostVars(collections.Mapping):
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''' A special view of vars_cache that adds values from the inventory when needed. '''
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def __init__(self, play, inventory, variable_manager, loader):
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self._lookup = dict()
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self._loader = loader
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self._play = play
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self._variable_manager = variable_manager
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hosts = inventory.get_hosts(ignore_limits_and_restrictions=True)
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# check to see if localhost is in the hosts list, as we
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# may have it referenced via hostvars but if created implicitly
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# it doesn't sow up in the hosts list
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has_localhost = False
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for host in hosts:
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if host.name in C.LOCALHOST:
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has_localhost = True
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break
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if not has_localhost:
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new_host = Host(name='localhost')
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new_host.set_variable("ansible_python_interpreter", sys.executable)
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new_host.set_variable("ansible_connection", "local")
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new_host.address = '127.0.0.1'
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hosts.append(new_host)
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for host in hosts:
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self._lookup[host.name] = host
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def __getitem__(self, host_name):
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if host_name not in self._lookup:
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return j2undefined
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host = self._lookup.get(host_name)
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data = self._variable_manager.get_vars(loader=self._loader, host=host, play=self._play, include_hostvars=False)
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templar = Templar(variables=data, loader=self._loader)
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return templar.template(data, fail_on_undefined=False)
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def __contains__(self, host_name):
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item = self.get(host_name)
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if item and item is not j2undefined:
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return True
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return False
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def __iter__(self):
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for host in self._lookup:
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yield host
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def __len__(self):
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return len(self._lookup)
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def __getstate__(self):
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return dict(loader=self._loader, lookup=self._lookup, play=self._play, var_manager=self._variable_manager)
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def __setstate__(self, data):
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self._play = data.get('play')
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self._loader = data.get('loader')
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self._lookup = data.get('lookup')
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self._variable_manager = data.get('var_manager')
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