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     format = 'pg'
  18
  19     def create(self, type="advertisement"):
  20         RSpec.create(self)
  21         for namespace in self.namespaces:
  22             xmlns = "xmlns"
  23             if namespace not in 'rspecv2':
  24                 xmlns = xmlns + ":" + namespace
  25             self.xml.set(xmlns, self.namespaces[namespace])
  26         for schema in self.schemas:
  27             self.xml.set(schema+":schemaLocation", self.schemas[schema])
  28
  29     def get_network(self):
  30         network = None
  31         nodes = self.xml.xpath('//rspecv2:node[@component_manager_uuid][1]', self.namespaces)
  32         if nodes:
  33             network  = nodes[0].get('component_manager_uuid')
  34         return network
  35
  36     def get_networks(self):
  37         networks = self.xml.xpath('//rspecv2:node[@component_manager_uuid]/@component_manager_uuid')
  38         return set(networks)
  39
  40     def get_node_elements(self):
  41         nodes = self.xml.xpath('//rspecv2:node', self.namespaces)
  42         return nodes
  43
  44     def get_nodes(self, network=None):
  45         return self.xml.xpath('//rspecv2:node[@component_uuid]/@component_uuid', self.namespaces)
  46
  47     def get_nodes_with_slivers(self, network=None):
  48         if network:
  49             return self.xml.xpath('//node[@component_manager_uuid="%s"][sliver_type]/@component_uuid' % network, self.namespaces)
  50         else:
  51             return self.xml.xpath('//node[sliver_type]/@component_uuid' % network, self.namespaces)
  52
  53     def get_nodes_without_slivers(self, network=None):
  54         pass
  55
  56     def add_nodes(self, nodes, check_for_dupes=False):
  57         if not isinstance(nodes, list):
  58             nodes = [nodes]
  59         for node in nodes:
  60             urn = ""
  61             if check_for_dupes and \
  62               self.xml.xpath('//rspecv2:node[@component_uuid="%s"]' % urn, self.namespaces):
  63                 # node already exists
  64                 continue
  65
  66             node_tag = etree.SubElement(self.xml, 'node')
  67             node_type_tag = etree.SubElement(node_tag, 'node_type', type_name='pcvm', type_slots='100')
  68             available_tag = etree.SubElement(node_tag, 'available').text = 'true'
  69             exclusive_tag = etree.SubElement(node_tag, 'exclusive').text = 'false'
  70             location_tag = etree.SubElement(node_tag, 'location')
  71             interface_tag = etree.SubElement(node_tag, 'interface')
  72
  73
  74     def add_slivers(self, slivers, check_for_dupes=False):
  75         pass
  76
  77     def add_links(self, links, check_for_dupes=False):
  78         pass
  79
  80
  81 if __name__ == '__main__':
  82     rspec = PGRSpec()
  83     rspec.add_nodes([1])
  84     print rspec