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 from sfa.rspecs.rspec_version import RSpecVersion
   9
  10 _version = {'type':  'protogeni',
  11             'version': '2',
  12             'schema': 'http://www.protogeni.net/resources/rspec/2/request.xsd',
  13             'namespace': 'http://www.protogeni.net/resources/rspec/2',
  14             'extenstions':  [
  15                 'http://www.protogeni.net/resources/rspec/ext/gre-tunnel/1',
  16                 'http://www.protogeni.net/resources/rspec/ext/other-ext/3'
  17             ]
  18 }
  19 pg_rspec_version = RSpecVersion(_version)
  20
  21 class PGRSpec(RSpec):
  22     xml = None
  23     header = '<?xml version="1.0"?>\n'
  24     template = """<rspec xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.protogeni.net/resources/rspec/0.2" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/0.2 http://www.protogeni.net/resources/rspec/0.2/ad.xsd"></rspec>"""
  25     version = pg_rspec_version
  26     namespaces = {'rspecv2': version['namespace']}
  27
  28     def get_network(self):
  29         network = None
  30         nodes = self.xml.xpath('//rspecv2:node[@component_manager_uuid][1]', namespaces=self.namespaces)
  31         if nodes:
  32             network  = nodes[0].get('component_manager_uuid')
  33         return network
  34
  35     def get_networks(self):
  36         networks = self.xml.xpath('//rspecv2:node[@component_manager_uuid]/@component_manager_uuid', namespaces=self.namespaces)
  37         return set(networks)
  38
  39     def get_node_elements(self):
  40         nodes = self.xml.xpath('//rspecv2:node', namespaces=self.namespaces)
  41         return nodes
  42
  43     def get_nodes(self, network=None):
  44         return self.xml.xpath('//rspecv2:node[@component_name]/@component_name', namespaces=self.namespaces)
  45
  46     def get_nodes_with_slivers(self, network=None):
  47         if network:
  48             return self.xml.xpath('//rspecv2:node[@component_manager_id="%s"][sliver_type]/@component_name' % network, namespaces=self.namespaces)
  49         else:
  50             return self.xml.xpath('//rspecv2:node[rspecv2:sliver_type]/@component_name', namespaces=self.namespaces)
  51
  52     def get_nodes_without_slivers(self, network=None):
  53         pass
  54
  55     def add_nodes(self, nodes, check_for_dupes=False):
  56         if not isinstance(nodes, list):
  57             nodes = [nodes]
  58         for node in nodes:
  59             urn = ""
  60             if check_for_dupes and \
  61               self.xml.xpath('//rspecv2:node[@component_uuid="%s"]' % urn, namespaces=self.namespaces):
  62                 # node already exists
  63                 continue
  64
  65             node_tag = etree.SubElement(self.xml, 'node')
  66             if 'network_urn' in node:
  67                 node_tag.set('component_manager_id', node['network_urn'])
  68             if 'urn' in node:
  69                 node_tag.set('component_id', node['urn'])
  70             if 'hostname' in node:
  71                 node_tag.set('component_name', node['hostname'])
  72             node_type_tag = etree.SubElement(node_tag, 'node_type', type_name='pcvm', type_slots='100')
  73             available_tag = etree.SubElement(node_tag, 'available').text = 'true'
  74             exclusive_tag = etree.SubElement(node_tag, 'exclusive').text = 'false'
  75             location_tag = etree.SubElement(node_tag, 'location', location="US")
  76             if 'site' in node:
  77                 if 'longitude' in node['site']:
  78                     location_tag.set('longitude', str(node['site']['longitude']))
  79                 if 'latitude' in node['site']:
  80                     location_tag.set('latitude', str(node['site']['latitude']))
  81             #if 'interfaces' in node:
  82
  83
  84     def add_slivers(self, slivers, check_for_dupes=False):
  85         if not isinstance(slivers, list):
  86             slivers = [slivers]
  87
  88         nodes_with_slivers = self.get_nodes_with_slivers()
  89         for sliver in slivers:
  90             hostname = sliver['hostname']
  91             if hostname in nodes_with_slivers:
  92                 continue
  93             nodes = self.xml.xpath('//rspecv2:node[@component_name="%s"] | //node[@component_name="%s"]' % (hostname, hostname), namespaces=self.namespaces)
  94             if nodes:
  95                 node = nodes[0]
  96                 node.set('client_id', hostname)
  97                 etree.SubElement(node, 'sliver_type', name='planetlab-vnode')
  98
  99     def add_interfaces(self, interfaces, check_for_dupes=False):
 100         pass
 101
 102     def add_links(self, links, check_for_dupes=False):
 103         pass
 104
 105
 106 if __name__ == '__main__':
 107     rspec = PGRSpec()
 108     rspec.add_nodes([1])
 109     print rspec