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# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# (c) 2017 Red Hat Inc.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import fnmatch
import sys
import ansible.module_utils.compat.typing as t
from ansible.module_utils.facts import timeout
from ansible.module_utils.facts import collector
from ansible.module_utils.common.collections import is_string
class AnsibleFactCollector(collector.BaseFactCollector):
'''A FactCollector that returns results under 'ansible_facts' top level key.
If a namespace if provided, facts will be collected under that namespace.
For ex, a ansible.module_utils.facts.namespace.PrefixFactNamespace(prefix='ansible_')
Has a 'from_gather_subset() constructor that populates collectors based on a
gather_subset specifier.'''
def __init__(self, collectors=None, namespace=None, filter_spec=None):
super(AnsibleFactCollector, self).__init__(collectors=collectors,
namespace=namespace)
self.filter_spec = filter_spec
def _filter(self, facts_dict, filter_spec):
# assume filter_spec='' or filter_spec=[] is equivalent to filter_spec='*'
if not filter_spec or filter_spec == '*':
return facts_dict
if is_string(filter_spec):
filter_spec = [filter_spec]
found = []
for f in filter_spec:
for x, y in facts_dict.items():
if not f or fnmatch.fnmatch(x, f):
found.append((x, y))
elif not f.startswith(('ansible_', 'facter', 'ohai')):
# try to match with ansible_ prefix added when non empty
g = 'ansible_%s' % f
if fnmatch.fnmatch(x, g):
found.append((x, y))
return found
def collect(self, module=None, collected_facts=None):
collected_facts = collected_facts or {}
facts_dict = {}
for collector_obj in self.collectors:
info_dict = {}
try:
# Note: this collects with namespaces, so collected_facts also includes namespaces
info_dict = collector_obj.collect_with_namespace(module=module,
collected_facts=collected_facts)
except Exception as e:
sys.stderr.write(repr(e))
sys.stderr.write('\n')
# shallow copy of the new facts to pass to each collector in collected_facts so facts
# can reference other facts they depend on.
collected_facts.update(info_dict.copy())
# NOTE: If we want complicated fact dict merging, this is where it would hook in
facts_dict.update(self._filter(info_dict, self.filter_spec))
return facts_dict
class CollectorMetaDataCollector(collector.BaseFactCollector):
'''Collector that provides a facts with the gather_subset metadata.'''
name = 'gather_subset'
_fact_ids = set() # type: t.Set[str]
def __init__(self, collectors=None, namespace=None, gather_subset=None, module_setup=None):
super(CollectorMetaDataCollector, self).__init__(collectors, namespace)
self.gather_subset = gather_subset
self.module_setup = module_setup
def collect(self, module=None, collected_facts=None):
meta_facts = {'gather_subset': self.gather_subset}
if self.module_setup:
meta_facts['module_setup'] = self.module_setup
return meta_facts
def get_ansible_collector(all_collector_classes,
namespace=None,
filter_spec=None,
gather_subset=None,
gather_timeout=None,
minimal_gather_subset=None):
filter_spec = filter_spec or []
gather_subset = gather_subset or ['all']
gather_timeout = gather_timeout or timeout.DEFAULT_GATHER_TIMEOUT
minimal_gather_subset = minimal_gather_subset or frozenset()
collector_classes = \
collector.collector_classes_from_gather_subset(
all_collector_classes=all_collector_classes,
minimal_gather_subset=minimal_gather_subset,
gather_subset=gather_subset,
gather_timeout=gather_timeout)
collectors = []
for collector_class in collector_classes:
collector_obj = collector_class(namespace=namespace)
collectors.append(collector_obj)
# Add a collector that knows what gather_subset we used so it it can provide a fact
collector_meta_data_collector = \
CollectorMetaDataCollector(gather_subset=gather_subset,
module_setup=True)
collectors.append(collector_meta_data_collector)
fact_collector = \
AnsibleFactCollector(collectors=collectors,
filter_spec=filter_spec,
namespace=namespace)
return fact_collector
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