sfa/rspecs/elements/versions/nitosv1Sliver.py

   1 from sfa.util.xrn import Xrn
   2 from sfa.util.xml import XmlElement
   3
   4 from sfa.rspecs.elements.element import Element
   5 from sfa.rspecs.elements.sliver import Sliver
   6 from sfa.rspecs.elements.versions.nitosv1PLTag import NITOSv1PLTag
   7
   8 #from sfa.planetlab.plxrn import PlXrn
   9
  10 class NITOSv1Sliver:
  11
  12     @staticmethod
  13     def add_slivers(xml, slivers):
  14         if not slivers:
  15             return
  16         if not isinstance(slivers, list):
  17             slivers = [slivers]
  18         for sliver in slivers:
  19             sliver_elem = xml.add_instance('sliver', sliver, ['name'])
  20             tags = sliver.get('tags', [])
  21             if tags:
  22                 for tag in tags:
  23                     NITOSv1Sliver.add_sliver_attribute(sliver_elem, tag['tagname'], tag['value'])
  24             if sliver.get('sliver_id'):
  25                 name = Xrn(xrn=sliver.get('sliver_id')).get_hrn().split('.')[-1]
  26                 sliver_elem.set('name', name)
  27
  28     @staticmethod
  29     def add_sliver_attribute(xml, name, value):
  30         elem = xml.add_element(name)
  31         elem.set_text(value)
  32
  33     @staticmethod
  34     def get_sliver_attributes(xml):
  35         attribs = []
  36         for elem in xml.iterchildren():
  37             if elem.tag not in Sliver.fields:
  38                 xml_element = XmlElement(elem, xml.namespaces)
  39                 instance = Element(fields=xml_element, element=elem)
  40                 instance['name'] = elem.tag
  41                 instance['value'] = elem.text
  42                 attribs.append(instance)
  43         return attribs
  44
  45     @staticmethod
  46     def get_slivers(xml, filter=None):
  47         if filter is None: filter={}
  48         xpath = './default:sliver | ./sliver'
  49         sliver_elems = xml.xpath(xpath)
  50         slivers = []
  51         for sliver_elem in sliver_elems:
  52             sliver = Sliver(sliver_elem.attrib,sliver_elem)
  53             if 'component_id' in xml.attrib:
  54                 sliver['component_id'] = xml.attrib['component_id']
  55             sliver['tags'] = NITOSv1Sliver.get_sliver_attributes(sliver_elem)
  56             slivers.append(sliver)
  57         return slivers
  58