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-rwxr-xr-xinventory/libvirt/hosts/libvirt_generic.py32
1 files changed, 28 insertions, 4 deletions
diff --git a/inventory/libvirt/hosts/libvirt_generic.py b/inventory/libvirt/hosts/libvirt_generic.py
index 02898c70a..1c9c17308 100755
--- a/inventory/libvirt/hosts/libvirt_generic.py
+++ b/inventory/libvirt/hosts/libvirt_generic.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python2
-"""
+'''
libvirt external inventory script
=================================
@@ -12,7 +12,7 @@ To use this, copy this file over /etc/ansible/hosts and chmod +x the file.
This, more or less, allows you to keep one central database containing
info about all of your managed instances.
-"""
+'''
# (c) 2015, Jason DeTiberus <jdetiber@redhat.com>
#
@@ -47,8 +47,11 @@ except ImportError:
class LibvirtInventory(object):
+ ''' libvirt dynamic inventory '''
def __init__(self):
+ ''' Main execution path '''
+
self.inventory = dict() # A list of groups and the hosts in that group
self.cache = dict() # Details about hosts in the inventory
@@ -64,6 +67,8 @@ class LibvirtInventory(object):
print _json_format_dict(self.get_inventory(), self.args.pretty)
def read_settings(self):
+ ''' Reads the settings from the libvirt.ini file '''
+
config = ConfigParser.SafeConfigParser()
config.read(
os.path.dirname(os.path.realpath(__file__)) + '/libvirt.ini'
@@ -71,6 +76,8 @@ class LibvirtInventory(object):
self.libvirt_uri = config.get('libvirt', 'uri')
def parse_cli_args(self):
+ ''' Command line argument processing '''
+
parser = argparse.ArgumentParser(
description='Produce an Ansible Inventory file based on libvirt'
)
@@ -94,11 +101,15 @@ class LibvirtInventory(object):
self.args = parser.parse_args()
def get_host_info(self):
+ ''' Get variables about a specific host '''
+
inventory = self.get_inventory()
if self.args.host in inventory['_meta']['hostvars']:
return inventory['_meta']['hostvars'][self.args.host]
def get_inventory(self):
+ ''' Construct the inventory '''
+
inventory = dict(_meta=dict(hostvars=dict()))
conn = libvirt.openReadOnly(self.libvirt_uri)
@@ -126,8 +137,8 @@ class LibvirtInventory(object):
hostvars['libvirt_status'] = 'running'
root = ET.fromstring(domain.XMLDesc())
- ns = {'ansible': 'https://github.com/ansible/ansible'}
- for tag_elem in root.findall('./metadata/ansible:tags/ansible:tag', ns):
+ ansible_ns = {'ansible': 'https://github.com/ansible/ansible'}
+ for tag_elem in root.findall('./metadata/ansible:tags/ansible:tag', ansible_ns):
tag = tag_elem.text
_push(inventory, "tag_%s" % tag, domain_name)
_push(hostvars, 'libvirt_tags', tag)
@@ -140,6 +151,12 @@ class LibvirtInventory(object):
mac_elem = interface.find('mac')
if source_elem is not None and \
mac_elem is not None:
+ # Adding this to disable pylint check specifically
+ # ignoring libvirt-python versions that
+ # do not include DHCPLeases
+ # This is needed until we upgrade the build bot to
+ # RHEL7 (>= 1.2.6 libvirt)
+ # pylint: disable=no-member
dhcp_leases = conn.networkLookupByName(source_elem.get('network')) \
.DHCPLeases(mac_elem.get('address'))
if len(dhcp_leases) > 0:
@@ -152,12 +169,19 @@ class LibvirtInventory(object):
return inventory
def _push(my_dict, key, element):
+ '''
+ Push element to the my_dict[key] list.
+ After having initialized my_dict[key] if it dosn't exist.
+ '''
+
if key in my_dict:
my_dict[key].append(element)
else:
my_dict[key] = [element]
def _json_format_dict(data, pretty=False):
+ ''' Serialize data to a JSON formated str '''
+
if pretty:
return json.dumps(data, sort_keys=True, indent=2)
else: