sfa/rspecs/pg_rspec.py

   1 #!/usr/bin/python
   2 from lxml import etree
   3 from StringIO import StringIO
   4 from sfa.rspecs.rspec import RSpec
   5 from sfa.util.xrn import *
   6 from sfa.util.plxrn import hostname_to_urn
   7 from sfa.util.config import Config
   8
   9 class PGRSpec(RSpec):
  10     xml = None
  11     header = '<?xml version="1.0"?>\n'
  12     namespaces = {'rspecv2':'http://www.protogeni.net/resources/rspec/0.2',
  13                   'xsi': 'http://www.w3.org/2001/XMLSchema-instance'
  14                  }
  15     schemas =  {'xsi': 'http://www.protogeni.net/resources/rspec/0.2 http://www.protogeni.net/resources/rspec/0.2/ad.xsd'
  16             }
  17
  18     def create(self, type="advertisement"):
  19         RSpec.create(self)
  20         for namespace in self.namespaces:
  21             xmlns = "xmlns"
  22             if namespace not in 'rspecv2':
  23                 xmlns = xmlns + ":" + namespace
  24             self.xml.set(xmlns, self.namespaces[namespace])
  25         for schema in self.schemas:
  26             self.xml.set(schema+":schemaLocation", self.schemas[schema])
  27
  28     def get_network(self):
  29         network = None
  30         nodes = self.xml.xpath('//rspecv2:node[@component_manager_uuid][1]', self.namespaces)
  31         if nodes:
  32             network  = nodes[0].get('component_manager_uuid')
  33         return network
  34
  35     def get_nodes(self, nodes_with_slivers=False):
  36         nodes = self.xml.xpath('//rspecv2:node', self.namespaces)
  37         return nodes
  38
  39     def add_nodes(self, nodes, check_for_dupes=False):
  40         if not isinstance(nodes, list):
  41             nodes = [nodes]
  42         for node in nodes:
  43             urn = ""
  44             if check_for_dupes and \
  45               self.xml.xpath('//rspecv2:node[@component_uuid="%s"]' % urn, self.namespaces):
  46                 # node already exists
  47                 continue
  48
  49             node_tag = etree.SubElement(self.xml, 'node')
  50             node_type_tag = etree.SubElement(node_tag, 'node_type', type_name='pcvm', type_slots='100')
  51             available_tag = etree.SubElement(node_tag, 'available').text = 'true'
  52             exclusive_tag = etree.SubElement(node_tag, 'exclusive').text = 'false'
  53             location_tag = etree.SubElement(node_tag, 'location')
  54             interface_tag = etree.SubElement(node_tag, 'interface')
  55
  56
  57     def add_slivers(self, slivers, check_for_dupes=False):
  58         pass
  59
  60     def add_links(self, links, check_for_dupes=False):
  61         pass
  62
  63
  64 if __name__ == '__main__':
  65     rspec = PGRSpec()
  66     rspec.add_nodes([1])
  67     print rspec