sfa/rspecs/elements/versions/iotlabv1Lease.py

   1 from sfa.util.sfalogging import logger
   2 from sfa.util.xml import XpathFilter
   3 from sfa.util.xrn import Xrn
   4
   5 from sfa.rspecs.elements.lease import Lease
   6
   7
   8
   9 class Iotlabv1Lease:
  10
  11     @staticmethod
  12     def add_leases(xml, leases):
  13
  14         network_elems = xml.xpath('//network')
  15         if len(network_elems) > 0:
  16             network_elem = network_elems[0]
  17         elif len(leases) > 0:
  18             network_urn = Xrn(leases[0]['component_id']).get_authority_urn().split(':')[0]
  19             network_elem = xml.add_element('network', name = network_urn)
  20         else:
  21             network_elem = xml
  22
  23         lease_elems = []
  24         for lease in leases:
  25
  26             lease_fields = ['lease_id', 'component_id', 'slice_id', 'start_time', 'duration']
  27             lease_elem = network_elem.add_instance('lease', lease, lease_fields)
  28             lease_elems.append(lease_elem)
  29
  30
  31     @staticmethod
  32     def get_leases(xml, filter={}):
  33         xpath = '//lease%s | //default:lease%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
  34         lease_elems = xml.xpath(xpath)
  35         return Iotlabv1Lease.get_lease_objs(lease_elems)
  36
  37     @staticmethod
  38     def get_lease_objs(lease_elems):
  39         leases = []
  40         for lease_elem in lease_elems:
  41             #get nodes
  42             node_elems = lease_elem.xpath('./default:node | ./node')
  43             for node_elem in node_elems:
  44                  lease = Lease(lease_elem.attrib, lease_elem)
  45                  lease['slice_id'] = lease_elem.attrib['slice_id']
  46                  lease['start_time'] = lease_elem.attrib['start_time']
  47                  lease['duration'] = lease_elem.attrib['duration']
  48                  lease['component_id'] = node_elem.attrib['component_id']
  49                  leases.append(lease)
  50
  51         return leases