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 _ad_version = {'type':  'ProtoGENI',
  11             'version': '2',
  12             'schema': 'http://www.protogeni.net/resources/rspec/2/ad.xsd',
  13             'namespace': 'http://www.protogeni.net/resources/rspec/2',
  14             'extensions':  [
  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
  20 _request_version = {'type':  'ProtoGENI',
  21             'version': '2',
  22             'schema': 'http://www.protogeni.net/resources/rspec/2/request.xsd',
  23             'namespace': 'http://www.protogeni.net/resources/rspec/2',
  24             'extensions':  [
  25                 'http://www.protogeni.net/resources/rspec/ext/gre-tunnel/1',
  26                 'http://www.protogeni.net/resources/rspec/ext/other-ext/3'
  27             ]
  28 }
  29 pg_rspec_ad_version = RSpecVersion(_ad_version)
  30 pg_rspec_request_version = RSpecVersion(_request_version)
  31
  32 class PGRSpec(RSpec):
  33     xml = None
  34     header = '<?xml version="1.0"?>\n'
  35     template = """<rspec xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.protogeni.net/resources/rspec/2" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/%(rspec_type)s.xsd"></rspec>"""
  36     version = pg_rspec_version
  37     namespaces = {'rspecv2': version['namespace']}
  38
  39     def __init__(self, rspec="", namespaces={}, type=None):
  40         self.type = type
  41         if not type or type == 'advertisement':
  42             version = pg_rspec_ad_version
  43         else:
  44             version = pg_rspec_request_version
  45
  46         if rspec:
  47             self.parse_rspec(rspec, namespaces)
  48         else:
  49             self.create()
  50
  51     def __get_template(self):
  52         if self.type = 'adversisement':
  53             rspec_type = 'ad'
  54         else:
  55             rspec_type = 'request'
  56         return self.tempate % locals()
  57
  58     def create():
  59         RSpec.create(self)
  60         if self.type:
  61             self.xml.set('type', self.type)
  62
  63     def get_network(self):
  64         network = None
  65         nodes = self.xml.xpath('//rspecv2:node[@component_manager_uuid][1]', namespaces=self.namespaces)
  66         if nodes:
  67             network  = nodes[0].get('component_manager_uuid')
  68         return network
  69
  70     def get_networks(self):
  71         networks = self.xml.xpath('//rspecv2:node[@component_manager_uuid]/@component_manager_uuid', namespaces=self.namespaces)
  72         return set(networks)
  73
  74     def get_node_elements(self):
  75         nodes = self.xml.xpath('//rspecv2:node', namespaces=self.namespaces)
  76         return nodes
  77
  78     def get_nodes(self, network=None):
  79         return self.xml.xpath('//rspecv2:node[@component_name]/@component_name', namespaces=self.namespaces)
  80
  81     def get_nodes_with_slivers(self, network=None):
  82         if network:
  83             return self.xml.xpath('//rspecv2:node[@component_manager_id="%s"][sliver_type]/@component_name' % network, namespaces=self.namespaces)
  84         else:
  85             return self.xml.xpath('//rspecv2:node[rspecv2:sliver_type]/@component_name', namespaces=self.namespaces)
  86
  87     def get_nodes_without_slivers(self, network=None):
  88         pass
  89
  90     def add_nodes(self, nodes, check_for_dupes=False):
  91         if not isinstance(nodes, list):
  92             nodes = [nodes]
  93         for node in nodes:
  94             urn = ""
  95             if check_for_dupes and \
  96               self.xml.xpath('//rspecv2:node[@component_uuid="%s"]' % urn, namespaces=self.namespaces):
  97                 # node already exists
  98                 continue
  99
 100             node_tag = etree.SubElement(self.xml, 'node')
 101             if 'network_urn' in node:
 102                 node_tag.set('component_manager_id', node['network_urn'])
 103             if 'urn' in node:
 104                 node_tag.set('component_id', node['urn'])
 105             if 'hostname' in node:
 106                 node_tag.set('component_name', node['hostname'])
 107             node_type_tag = etree.SubElement(node_tag, 'node_type', type_name='pcvm', type_slots='100')
 108             available_tag = etree.SubElement(node_tag, 'available').text = 'true'
 109             exclusive_tag = etree.SubElement(node_tag, 'exclusive').text = 'false'
 110             location_tag = etree.SubElement(node_tag, 'location', location="US")
 111             if 'site' in node:
 112                 if 'longitude' in node['site']:
 113                     location_tag.set('longitude', str(node['site']['longitude']))
 114                 if 'latitude' in node['site']:
 115                     location_tag.set('latitude', str(node['site']['latitude']))
 116             #if 'interfaces' in node:
 117
 118
 119     def add_slivers(self, slivers, check_for_dupes=False):
 120         if not isinstance(slivers, list):
 121             slivers = [slivers]
 122
 123         nodes_with_slivers = self.get_nodes_with_slivers()
 124         for sliver in slivers:
 125             hostname = sliver['hostname']
 126             if hostname in nodes_with_slivers:
 127                 continue
 128             nodes = self.xml.xpath('//rspecv2:node[@component_name="%s"] | //node[@component_name="%s"]' % (hostname, hostname), namespaces=self.namespaces)
 129             if nodes:
 130                 node = nodes[0]
 131                 node.set('client_id', hostname)
 132                 etree.SubElement(node, 'sliver_type', name='planetlab-vnode')
 133
 134     def add_interfaces(self, interfaces, check_for_dupes=False):
 135         pass
 136
 137     def add_links(self, links, check_for_dupes=False):
 138         pass
 139
 140
 141     def merge(self, in_rspec):
 142         """
 143         Merge contents for specified rspec with current rspec
 144         """
 145
 146         # just copy over all the child elements under the root element
 147         tree = etree.parse(StringIO(in_rspec))
 148         root = tree.getroot()
 149         for child in root.getchildren():
 150             self.xml.append(child)
 151
 152
 153
 154 if __name__ == '__main__':
 155     rspec = PGRSpec()
 156     rspec.add_nodes([1])
 157     print rspec