def set_ip(self, value):
if not issubclass(type(value), IPXML):
raise xcepts.LibvirtXMLError("value must be a IPXML or subclass")
xmltreefile = self.__dict_get__('xml')
# IPXML root element is whole IP element tree
root = xmltreefile.getroot()
root.append(value.xmltreefile.getroot())
xmltreefile.write()
def sync(self, options=None):
"""Rebuild VM with the config file."""
# If target vm no longer exist, this will raise an exception.
try:
backup = self.new_from_dumpxml(self.vm_name)
except IOError:
logging.debug("Failed to backup %s.", self.vm_name)
backup = None
if not self.undefine(options):
raise xcepts.LibvirtXMLError("Failed to undefine %s." %
self.vm_name)
if not self.define():
if backup:
backup.define()
raise xcepts.LibvirtXMLError("Failed to define %s, from %s." %
(self.vm_name, self.xml))
def marshal_from_address(item, index, libvirtxml):
"""Convert an Address instance into tag + attributes"""
root = item.xmltreefile.getroot()
if root.tag == 'address':
return (root.tag, dict(list(root.items())))
else:
raise xcepts.LibvirtXMLError("Expected a list of address "
"instances, not a %s" % str(item))
def marshal_from_route(item, index, libvirtxml):
"""Convert a dictionary into a tag + attributes"""
del index # not used
del libvirtxml # not used
if not isinstance(item, dict):
raise xcepts.LibvirtXMLError("Expected a dictionary of interface "
"attributes, not a %s" % str(item))
return ('route', dict(item)) # return copy of dict, not reference
def set_portgroup(self, value):
if not issubclass(type(value), PortgroupXML):
raise xcepts.LibvirtXMLError("value must be a PortgroupXML"
"instance or subclass.")
self.del_portgroup()
root = self.xmltreefile.getroot()
root.append(value.xmltreefile.getroot())
self.xmltreefile.write()
def get_cap(self):
"""
Return the capability of nodedev_xml.
"""
try:
cap_root = self.xmltreefile.reroot('/capability')
except KeyError, detail:
raise xcepts.LibvirtXMLError(detail)
def get_portgroup(self):
try:
portgroup_root = self.xmltreefile.reroot('/portgroup')
except KeyError as detail:
raise xcepts.LibvirtXMLError(detail)
portgroup_xml = PortgroupXML(virsh_instance=self.__dict_get__('virsh'))
portgroup_xml.xmltreefile = portgroup_root
return portgroup_xml
def marshal_from_values(item, index, libvirtxml):
"""Convert a EnumXML instance into a tag + attributes"""
del index # not used
del libvirtxml # not used
if isinstance(item, six.string_types):
return ("value", {}, item)
else:
raise xcepts.LibvirtXMLError("Expected a str attributes,"
" not a %s" % str(item))
def marshal_from_hosts(item, index, libvirtxml):
"""
Convert an xml object to host tag and xml element
"""
if isinstance(item, DhcpHostXML):
return 'host', item
else:
raise xcepts.LibvirtXMLError("Expected a list of ip dhcp host "
"instances, not a %s" % str(item))
def marshal_from_hostname(item, index, libvirtxml):
"""Convert a HostnameXML instance into a tag + attributes"""
del index # not used
del libvirtxml # not used
if isinstance(item, str):
return ("hostname", {}, item)
else:
raise xcepts.LibvirtXMLError("Expected a str attributes,"
" not a %s" % str(item))
def get_ip(self):
xmltreefile = self.__dict_get__('xml')
try:
ip_root = xmltreefile.reroot('/ip')
except KeyError as detail:
raise xcepts.LibvirtXMLError(detail)
ipxml = IPXML(virsh_instance=self.__dict_get__('virsh'))
ipxml.xmltreefile = ip_root
return ipxml
def define(self):
"""
Define network from self.xml.
"""
cmd_result = self.virsh.net_define(self.xml)
if cmd_result.exit_status:
raise xcepts.LibvirtXMLError("Failed to define network %s.\n"
"Detail: %s" %
(self.name, cmd_result.stderr))
def start(self):
"""
Start network with self.virsh.
"""
cmd_result = self.virsh.net_start(self.name)
if cmd_result.exit_status:
raise xcepts.LibvirtXMLError("Failed to start network %s.\n"
"Detail: %s" %
(self.name, cmd_result.stderr))
def create(self):
"""
Adds non-persistant / transient network to libvirt with net-create
"""
cmd_result = self.virsh.net_create(self.xml)
if cmd_result.exit_status:
raise xcepts.LibvirtXMLError("Failed to create transient network %s.\n"
"Detail: %s" %
(self.name, cmd_result.stderr))
def set_source(self, value):
if not issubclass(type(value), SourceXML):
raise xcepts.LibvirtXMLError(
"Value must be a SourceXML or subclass")
xmltreefile = self.__dict_get__('xml')
self.del_source()
root = xmltreefile.getroot()
root.append(value.xmltreefile.getroot())
xmltreefile.write()
def set_ip(self, value):
if not issubclass(type(value), IPXML):
raise xcepts.LibvirtXMLError("value must be a IPXML or subclass")
xmltreefile = self.dict_get('xml')
# nuke any existing IP block
self.del_ip()
# IPXML root element is whole IP element tree
root = xmltreefile.getroot()
root.append(value.getroot())
def new_from_element(cls, element, virsh_instance=base.base.virsh):
# element uses type attribute, class uses type_name
edict = dict(list(element.items()))
try:
edict['type_name'] = edict.pop('type')
except (KeyError, AttributeError):
raise xcepts.LibvirtXMLError("type attribute is manditory for "
"Address class")
return cls.new_from_dict(edict, virsh_instance=virsh_instance)
def get(name):
"""
Returns named device xml element's handler class
"""
# Module names and device-tags are always all lower-case
name = str(name).lower()
errmsg = ("Unknown/unsupported type '%s', supported types %s" %
(str(name), DEVICE_TYPES))
if name not in DEVICE_TYPES:
raise xcepts.LibvirtXMLError(errmsg)
mod_path = os.path.abspath(os.path.dirname(__file__))
try:
filename, pathname, description = imp.find_module(name, [mod_path])
mod_obj = imp.load_module(name, filename, pathname, description)
# Enforce capitalized class names
return getattr(mod_obj, name.capitalize())
except TypeError, detail:
raise xcepts.LibvirtXMLError(errmsg + ': %s' % str(detail))
def set_xmltreefile(self, value):
"""
Point instance directly at an already initialized XMLTreeFile instance
"""
if not issubclass(type(value), xml_utils.XMLTreeFile):
raise xcepts.LibvirtXMLError(
"xmltreefile value must be XMLTreefile"
" type or subclass, not a %s" % type(value))
self.dict_set('xml', value)
def marshal_from_seclabel(item, index, libvirtxml):
"""Convert a Seclabel instance into tag + attributes"""
del index # not used
del libvirtxml # not used
root = item.xmltreefile.getroot()
if root.tag == 'seclabel':
return (root.tag, dict(root.items))
else:
raise xcepts.LibvirtXMLError("Expected a list of seclabel "
"instances, not a %s" % str(item))
def marshal_from_cpu(item, index, libvirtxml):
"""
Convert a dict to cpu tag and attributes.
"""
del index
del libvirtxml
if not isinstance(item, dict):
raise xcepts.LibvirtXMLError("Expected a dictionary of cpu "
"attributes, not a %s" % str(item))
return ('cpu', dict(item))
def undefine(self):
"""
Undefine network witch name is self.name.
"""
self.virsh.net_destroy(self.name)
cmd_result = self.virsh.net_undefine(self.name)
if cmd_result.exit_status:
raise xcepts.LibvirtXMLError("Failed to undefine network %s.\n"
"Detail: %s" %
(self.name, cmd_result.stderr))
def get_attr(self):
"""
Return mac attribute dict
:return: None if no mac in xml, dict of mac's attributes.
"""
try:
mac_node = self.xmltreefile.reroot('/mac')
except KeyError, detail:
raise xcepts.LibvirtXMLError(detail)
def get_attr(self):
"""
Return all-ipv6 attribute dict
:return: None if no all-ipv6 in xml, dict of all-ipv6's attributes.
"""
try:
all_node = self.xmltreefile.reroot('/all-ipv6')
except KeyError, detail:
raise xcepts.LibvirtXMLError(detail)
def get_attr(self):
"""
Return icmp attribute dict
:return: None if no icmp in xml, dict of icmp's attributes.
"""
try:
icmp_node = self.xmltreefile.reroot('/icmp')
except KeyError, detail:
raise xcepts.LibvirtXMLError(detail)
def marshal_from_sources(item, index, libvirtxml):
"""
Convert a dict to serial source attributes.
"""
del index
del libvirtxml
if not isinstance(item, dict):
raise xcepts.LibvirtXMLError("Expected a dictionary of source "
"attributes, not a %s" % str(item))
return ('source', dict(item))
def get_attr(self):
"""
Return udplite attribute dict
:return: None if no udplite in xml, dict of udplite's attributes.
"""
try:
udplite_node = self.xmltreefile.reroot('/udplite')
except KeyError, detail:
raise xcepts.LibvirtXMLError(detail)
def __call__(self):
element = self.element_by_parent(self.parent_xpath,
self.tag_name, create=False)
try:
result = int(element.text, self.radix)
except ValueError:
raise xcepts.LibvirtXMLError("Value of %s in %s is %s,"
"not a Integer." % (self.tag_name,
self.parent_xpath, element.text))
return result
def set_rule(self, value, rule_index=0):
"""
Delete rule with specific index and add new given value
:param rule_index: rule's index number
:param value: NwfilterXMLRules instance
"""
if not issubclass(type(value), NwfilterXMLRules):
raise xcepts.LibvirtXMLError(
"Value must be a NwfilterXMLRules or subclass")
try:
source_root = self.xmltreefile.findall('rule')
except KeyError as detail:
raise xcepts.LibvirtXMLError(detail)
if source_root[rule_index] is not None:
self.del_rule(rule_index)
root = self.xmltreefile.getroot()
root.insert(rule_index, value.xmltreefile.getroot())
self.xmltreefile.write()
def marshal_from_timer(item, index, libvirtxml):
"""Convert a Timer instance into tag + attributes"""
del index
del libvirtxml
timer = item.xmltreefile.find("clock/timer")
try:
return (timer.tag, dict(timer.items()))
except AttributeError: # Didn't find timer
raise xcepts.LibvirtXMLError("Expected a list of timer "
"instances, not a %s" % str(item))
