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Mv AnsibleFactCollector back to module_utils (#26150)

Browse source 
It was in lib/ansible/modules/system/setup.py since it
was the only thing using it, but move it back to module_utils
and add a ansible_collector.get_ansible_collector() to build
a facts collector just like the one used by setup.py

mv test_setup.py -> test_ansible_collector.py
All the code it was testing is now in ansible_collector

rm code to create 'ansible_facts' subkey from namespace

Just leave it up to the caller to do, and just return a
flat dictionary from AnsibleFactCollector.collect()
This commit is contained in:
Adrian Likins 2017-07-11 10:44:22 -04:00 • committed by GitHub
commit 0fc0b6f059
3 changed files with 167 additions and 145 deletions
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112
lib/ansible/modules/system/setup.py
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@ -118,93 +118,16 @@ EXAMPLES = """
# Display facts from Windows hosts with custom facts stored in C(C:\\custom_facts).
# ansible windows -m setup -a "fact_path='c:\\custom_facts'"
"""
import fnmatch
import sys
# import module snippets
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.facts import collector
from ansible.module_utils.facts.namespace import PrefixFactNamespace
from ansible.module_utils.facts import ansible_collector
from ansible.module_utils.facts import default_collectors
# This is the main entry point for setup.py facts.py.
# FIXME: This is coupled to AnsibleModule (it assumes module.params has keys 'gather_subset',
# 'gather_timeout', 'filter' instead of passing those are args or oblique ds
# module is passed in and self.module.misc_AnsibleModule_methods
# are used, so hard to decouple.
class AnsibleFactCollector(collector.BaseFactCollector):
'''A FactCollector that returns results under 'ansible_facts' top level key.
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 a filter_spec='' is equilv to filter_spec='*'
if not filter_spec or filter_spec == '*':
return facts_dict
return [(x, y) for x, y in facts_dict.items() if fnmatch.fnmatch(x, filter_spec)]
def collect(self, module=None, collected_facts=None):
collected_facts = collected_facts or {}
facts_dict = {}
facts_dict['ansible_facts'] = {}
for collector_obj in self.collectors:
info_dict = {}
# shallow copy of the accumulated collected facts to pass to each collector
# for reference.
collected_facts.update(facts_dict['ansible_facts'].copy())
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')
# filtered_info_dict = self._filter(info_dict, self.filter_spec)
# NOTE: If we want complicated fact dict merging, this is where it would hook in
facts_dict['ansible_facts'].update(self._filter(info_dict, self.filter_spec))
# TODO: this may be best place to apply fact 'filters' as well. They
# are currently ignored -akl
return facts_dict
class CollectorMetaDataCollector(collector.BaseFactCollector):
'''Collector that provides a facts with the gather_subset metadata.'''
name = 'gather_subset'
_fact_ids = set([])
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 main():
module = AnsibleModule(
argument_spec=dict(
@ -231,38 +154,21 @@ def main():
all_collector_classes = default_collectors.collectors
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)
# print('collector_classes: %s' % pprint.pformat(collector_classes))
# rename namespace_name to root_key?
namespace = PrefixFactNamespace(namespace_name='ansible',
prefix='ansible_')
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)
# print('collectors: %s' % pprint.pformat(collectors))
fact_collector = \
AnsibleFactCollector(collectors=collectors,
filter_spec=filter_spec)
ansible_collector.get_ansible_collector(all_collector_classes=all_collector_classes,
namespace=namespace,
filter_spec=filter_spec,
gather_subset=gather_subset,
gather_timeout=gather_timeout,
minimal_gather_subset=minimal_gather_subset)
facts_dict = fact_collector.collect(module=module)
module.exit_json(**facts_dict)
module.exit_json(ansible_facts=facts_dict)
if __name__ == '__main__':