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 getPropertiesForNode(node, configuration):
"""
Generate an array of tuples containing the environment information
for a single node (vs or vsc)
@type node: DOM node
@param node: virtual system or collection DOM node
@type configuration: String
@param configuration: Configuration being used. Can be None
@rtype: array
@return: array of [(key, property node, value)]
"""
# Start by getting all product sections for this node
productSections = Ovf.getChildNodes(node, (Ovf.hasTagName,
'ProductSection'))
retArray = []
# it's valid for there to be 0 product sections
if productSections != []:
for prodNode in productSections:
prodClass = prodNode.getAttribute('ovf:class')
if prodClass != '':
prodClass += '.'
prodInstance = prodNode.getAttribute('ovf:instance')
if prodInstance != '':
prodInstance = '.' + prodInstance
properties = Ovf.getChildNodes(prodNode,
(Ovf.hasTagName, 'Property'))
if properties == []:
continue
for propertyNode in properties:
attributes = Ovf.getAttributes(propertyNode)
if not attributes.has_key('ovf:key'):
raise RuntimeError, 'Node missing required attribute ' +\
'ovf:key'
propKey = prodClass + attributes['ovf:key'] + prodInstance
retArray.append((propKey, propertyNode,
getPropertyDefaultValue(propertyNode,\
configuration)))
return retArray
