def _has_libvirt_network_data(self, directory, device_name):
def _parse_libvirt_file(libvirt_filename):
try:
xml_data = None
if libvirt_filename not in self.libvirt_cache:
stdout = utils.execute("cat", libvirt_filename, run_as_root=True)[0]
xml_data = cElementTree.fromstring(stdout)
self.libvirt_cache[libvirt_filename] = xml_data
else:
xml_data = self.libvirt_cache[libvirt_filename]
return xml_data
except Exception:
"""
file cannot be parsed as xml, so ignore it though
log debug message
"""
LOG.debug("file %s cannot be parsed as xml, ignoring" % libvirt_filename)
return None
def _scan_for_bridge(libvirt_xml, device_name):
net_list = libvirt_xml.findall("network")
for network in net_list:
bridge_list = network.findall("bridge")
ip = network.find("ip")
for bridge in bridge_list:
name = bridge.get("name")
LOG.debug("device name = %s, ip = %s" % (device_name, str(ip)))
if name == device_name and ip:
return True
return False
libvirt_dir = directory
if len(self.libvirt_files) == 0:
self.libvirt_files = [
f
for f in commandlet._list_directory(libvirt_dir, run_as_root=True)
if commandlet._check_file_exists("%s/%s" % (libvirt_dir, f))
]
LOG.debug("libvirt network files = %s" % self.libvirt_files)
for libvirt_file in self.libvirt_files:
fname = "%s/%s" % (libvirt_dir, libvirt_file)
xml_elem = _parse_libvirt_file(fname)
if not xml_elem:
continue
if _scan_for_bridge(xml_elem, device_name):
return True
return False
def _has_ifcfg_data(self, device_name):
"""
Determine if ifcfg data exists for device.
:param device_name: A device name to look up such as eth0.
:return: ifcfg_dict if data exists, {} otherwise.
"""
ifcfg_dir = "/etc/sysconfig/network-scripts"
# The device_name is usually in the ifcfg file name, so check for this
# case first.
ifcfg_dict = {}
fname = "%s/ifcfg-%s" % (ifcfg_dir, device_name)
LOG.debug("Initial attempt to process %s using ifcfg file %s" % (device_name, fname))
if fname in self.ifcfg_cache:
LOG.debug("Using cached ifcfg data")
ifcfg_dict = self.ifcfg_cache[fname]
elif commandlet._check_file_exists(fname):
if fname not in self.ifcfg_cache:
LOG.debug("Retrieving ifcfg data from system")
stdout = utils.execute("cat", fname, run_as_root=True)[0]
ifcfg_dict = self.commandparse.parse_ifcfg(device_name, stdout)
self.ifcfg_cache[fname] = ifcfg_dict
# make sure there are no quote around the device name we
# get from the ifcfg file
ifcfg_dev_name = re.sub(r'^"|"$', "", ifcfg_dict.get(agent.IFCFG_DEVICE, ""))
if ifcfg_dev_name == device_name and self._has_ip_config(ifcfg_dict):
LOG.debug("found ifcfg file in expected location.")
return ifcfg_dict
# The ifcfg with the desired device name either does not exist, or
# contains a different internal device name. Search all ifcfg files
# looking for the correct device.
if len(self.ifcfg_files) == 0:
self.ifcfg_files = [
f
for f in commandlet._list_directory(ifcfg_dir)
if commandlet._check_file_exists("%s/%s" % (ifcfg_dir, f))
]
for ifcfg_file in self.ifcfg_files:
fname = "%s/%s" % (ifcfg_dir, ifcfg_file)
LOG.debug("General attempt to process %s using ifcfg file %s" % (device_name, fname))
if os.access(fname, os.X_OK):
LOG.debug("%s is executable, will not be processed for ifcfg " "data" % fname)
self.ifcfg_files.remove(ifcfg_file)
continue
if fname not in self.ifcfg_cache:
LOG.debug("For %s retrieving ifcfg file %s from filesystem" % (device_name, fname))
stdout = utils.execute("cat", fname, run_as_root=True)[0]
ifcfg_dict = self.commandparse.parse_ifcfg(device_name, stdout)
self.ifcfg_cache[fname] = ifcfg_dict
else:
LOG.debug("Using cached ifcfg data for file %s" % fname)
# make sure there are no quote around the device name we
# get from the ifcfg file
ifcfg_dev_name = re.sub(r'^"|"$', "", self.ifcfg_cache[fname].get(agent.IFCFG_DEVICE, ""))
LOG.debug(
"check for match between %s and %s and "
"ip data in %s" % (ifcfg_dev_name, device_name, str(ifcfg_dict))
)
if ifcfg_dev_name == device_name and self._has_ip_config(self.ifcfg_cache[fname]):
LOG.debug("found ifcfg data in file %s for device %s." % (fname, device_name))
return self.ifcfg_cache[fname]
return {}
