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