def getPropertyDefaultValue(propertyNode, configuration):
"""
Get the default value for a given Property node. The value returned is
based on this priority:
1) value node for given configuration
2) ovf:value attribute
3) first Value node
@type propertyNode: DOM node
@param propertyNode: Property node
@type configuration: String
@param configuration: Configuration used to select the default value
@rtype: String
@return: Default value for node. May be empty string. None if no default
was specified
"""
if not configuration:
docNode = propertyNode.parentNode
while docNode.nodeType != Node.DOCUMENT_NODE:
docNode = docNode.parentNode
if not docNode:
raise RuntimeError, "Unable to find document node"
configuration = Ovf.getDefaultConfiguration(docNode)
if configuration:
valueNodes = Ovf.getChildNodes(propertyNode,
(Ovf.hasTagName, 'Value'),
(Ovf.hasAttribute, 'ovf:configuration',
configuration))
if valueNodes:
attributes = Ovf.getAttributes(valueNodes[0])
if attributes.has_key('ovf:value'):
return attributes['ovf:value']
attributes = Ovf.getAttributes(propertyNode)
if attributes.has_key('ovf:value'):
return attributes['ovf:value']
valueNodes = Ovf.getChildNodes(propertyNode, (Ovf.hasTagName, 'Value'))
if valueNodes:
attributes = Ovf.getAttributes(valueNodes[0])
if attributes.has_key('ovf:value'):
return attributes['ovf:value']
return None
def getOvfDomains(ovf, path, hypervisor=None, configId=None, envDirectory=None):
"""
Returns a dictionary with all of the VirtualSystems in an ovf
listed as keys with the libvirt domain, for the specified configuration,
stored as the value.
@param ovf: Ovf file
@type ovf: DOM Document
@param path: path to Ovf file
@type path: String
@param configId: configuration name
@type configId: String
@todo: needs work, very basic, assumes hypervisor type
"""
domains = dict()
#directory = os.path.abspath(path.rsplit("/", 1)[0])
directory = path
if configId == None:
configId = Ovf.getDefaultConfiguration(ovf)
else:
if not Ovf.isConfiguration(ovf, configId):
raise RuntimeError("OvfLibvirt.getOvfDomains: configuration " +
configId + " not found.")
# Get Nodes
references = Ovf.getElementsByTagName(ovf, 'References')
diskSection = Ovf.getElementsByTagName(ovf, 'DiskSection')
if len(references) is not 1:
raise NotImplementedError("OvfLibvirt.getOvfDomain: Unable to locate" +
" a single References node.")
elif len(diskSection) is not 1:
raise NotImplementedError("OvfLibvirt.getOvfDomain: Unable to locate" +
" a single DiskSection node.")
else:
refs = references[0]
disks = diskSection[0]
# For each system, create libvirt domain description
for system in Ovf.getNodes(ovf, (Ovf.hasTagName, 'VirtualSystem')):
ovfId = system.getAttribute('ovf:id')
# Get VirtualHardwareSection
virtualHardwareSection = Ovf.getElementsByTagName(system,
'VirtualHardwareSection')
if len(virtualHardwareSection) is not 1:
raise NotImplementedError("OvfLibvirt.getOvfDomain: Unable to locate" +
" a single VirtualHardwareSection node.")
else:
virtualHardware = virtualHardwareSection[0]
#metadata
name = nameElement(ovfId)
#resources
memory = memoryElement(getOvfMemory(virtualHardware, configId))
vcpu = vcpuElement(getOvfVcpu(virtualHardware, configId))
#domain
if not hypervisor:
hypervisor = OvfPlatform.getVsSystemType(system)
else:
hypervisor = hypervisor.lower()
domainType = getDomainTypeForVsType(hypervisor)
domain = domainElement(domainType)
#boot
bootElements(domain, hypervisor)
#time
clock = clockElement('utc')
#features
features = featuresElement(acpi=True)
#life cycle
onPowerOff = onPowerOffElement('destroy')
onReboot = onRebootElement('restart')
onCrash = onCrashElement('destroy')
#devices - graphics
graphics = graphicsElement('vnc', 'localhost', '-1')
#devices - console
console = consoleElement('pty', '0')
#devices
devices = devicesElement(graphics, console)
#disks
envFile = None
if envDirectory:
envFile = os.path.join(envDirectory, ovfId + '.iso')
diskDicts = getOvfDisks(virtualHardware, directory, refs,
disks, configId, envFile)
for dsk in diskDicts:
addDevice(devices, diskElement(dsk))
#network
netDicts = getOvfNetworks(virtualHardware, configId)
for networkDict in netDicts:
network = networkElement(networkDict)
addDevice(devices, network)
#document
document = libvirtDocument(domain, name, memory, vcpu,
clock, features, onPowerOff,
onReboot, onCrash, devices)
domains[ovfId] = Ovf.xmlString(document)
# Delete any extra copies of disk images
cleanupExtraDiskImages(directory, refs, disks)
return domains