sfa/rspecs/versions/pgv2.py

   1 from copy import deepcopy
   2 from StringIO import StringIO
   3 from sfa.util.xrn import urn_to_sliver_id
   4 from sfa.util.plxrn import hostname_to_urn, xrn_to_hostname
   5 from sfa.rspecs.baseversion import BaseVersion
   6 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
   7 from sfa.rspecs.elements.versions.pgv2Node import PGv2Node
   8 from sfa.rspecs.elements.versions.pgv2SliverType import PGv2SliverType
   9
  10 class PGv2(BaseVersion):
  11     type = 'ProtoGENI'
  12     content_type = 'ad'
  13     version = '2'
  14     schema = 'http://www.protogeni.net/resources/rspec/2/ad.xsd'
  15     namespace = 'http://www.protogeni.net/resources/rspec/2'
  16     extensions = {
  17         'flack': "http://www.protogeni.net/resources/rspec/ext/flack/1",
  18         'planetlab': "http://www.planet-lab.org/resources/sfa/ext/planetlab/1",
  19     }
  20     namespaces = dict(extensions.items() + [('default', namespace)])
  21
  22     # Networks
  23     def get_network(self):
  24         network = None
  25         nodes = self.xml.xpath('//default:node[@component_manager_id][1]', namespaces=self.namespaces)
  26         if nodes:
  27             network  = nodes[0].get('component_manager_id')
  28         return network
  29
  30     def get_networks(self):
  31         networks = self.xml.xpath('//default:node[@component_manager_id]/@component_manager_id', namespaces=self.namespaces)
  32         return set(networks)
  33
  34
  35     # Nodes
  36
  37     def get_nodes(self, filter=None):
  38         return PGv2Node.get_nodes(self.xml, filter)
  39
  40     def get_nodes_with_slivers(self):
  41         return PGv2Node.get_nodes_with_slivers(self.xml)
  42
  43     def add_nodes(self, nodes, check_for_dupes=False):
  44         return PGv2Node.add_nodes(self.xml, nodes)
  45
  46     def merge_node(self, source_node_tag):
  47         # this is untested
  48         self.xml.root.append(deepcopy(source_node_tag))
  49
  50     # Slivers
  51
  52     def get_sliver_attributes(self, hostname, network=None):
  53         nodes = self.get_nodes({'component_id': '*%s*' %hostname})
  54         attribs = []
  55         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
  56             node = nodes[0]
  57             sliver = node.xpath('./default:sliver_type', namespaces=self.namespaces)
  58             if sliver is not None and isinstance(sliver, list) and len(sliver) > 0:
  59                 sliver = sliver[0]
  60                 #attribs = self.attributes_list(sliver)
  61         return attribs
  62
  63     def get_slice_attributes(self, network=None):
  64         slice_attributes = []
  65         nodes_with_slivers = self.get_nodes_with_slivers()
  66         # TODO: default sliver attributes in the PG rspec?
  67         default_ns_prefix = self.namespaces['default']
  68         for node in nodes_with_slivers:
  69             sliver_attributes = self.get_sliver_attributes(node, network)
  70             for sliver_attribute in sliver_attributes:
  71                 name=str(sliver_attribute[0])
  72                 text =str(sliver_attribute[1])
  73                 attribs = sliver_attribute[2]
  74                 # we currently only suppor the <initscript> and <flack> attributes
  75                 if  'info' in name:
  76                     attribute = {'name': 'flack_info', 'value': str(attribs), 'node_id': node}
  77                     slice_attributes.append(attribute)
  78                 elif 'initscript' in name:
  79                     if attribs is not None and 'name' in attribs:
  80                         value = attribs['name']
  81                     else:
  82                         value = text
  83                     attribute = {'name': 'initscript', 'value': value, 'node_id': node}
  84                     slice_attributes.append(attribute)
  85
  86         return slice_attributes
  87
  88     def attributes_list(self, elem):
  89         opts = []
  90         if elem is not None:
  91             for e in elem:
  92                 opts.append((e.tag, str(e.text).strip(), e.attrib))
  93         return opts
  94
  95     def get_default_sliver_attributes(self, network=None):
  96         return []
  97
  98     def add_default_sliver_attribute(self, name, value, network=None):
  99         pass
 100
 101     def add_slivers(self, hostnames, attributes=[], sliver_urn=None, append=False):
 102         # all nodes hould already be present in the rspec. Remove all
 103         # nodes that done have slivers
 104         for hostname in hostnames:
 105             node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
 106             if not node_elems:
 107                 continue
 108             node_elem = node_elems[0]
 109
 110             # determine sliver types for this node
 111             valid_sliver_types = ['emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
 112             requested_sliver_type = None
 113             for sliver_type in node_elem.get('slivers', []):
 114                 if sliver_type.get('type') in valid_sliver_types:
 115                     requested_sliver_type = sliver_type['type']
 116
 117             if not requested_sliver_type:
 118                 continue
 119             sliver = {'name': requested_sliver_type,
 120                      'pl_tags': attributes}
 121
 122             # remove existing sliver_type tags
 123             for sliver_type in node_elem.get('slivers', []):
 124                 node_elem.element.remove(sliver_type.element)
 125
 126             # set the client id
 127             node_elem.element.set('client_id', hostname)
 128             if sliver_urn:
 129                 pass
 130                 # TODO
 131                 # set the sliver id
 132                 #slice_id = sliver_info.get('slice_id', -1)
 133                 #node_id = sliver_info.get('node_id', -1)
 134                 #sliver_id = urn_to_sliver_id(sliver_urn, slice_id, node_id)
 135                 #node_elem.set('sliver_id', sliver_id)
 136
 137             # add the sliver type elemnt
 138             PGv2SliverType.add_slivers(node_elem.element, sliver)
 139
 140         # remove all nodes without slivers
 141         if not append:
 142             for node_elem in self.get_nodes():
 143                 if not node_elem['client_id']:
 144                     parent = node_elem.element.getparent()
 145                     parent.remove(node_elem.element)
 146
 147     def remove_slivers(self, slivers, network=None, no_dupes=False):
 148         PGv2Node.remove_slivers(self.xml, slivers)
 149
 150     # Links
 151
 152     def get_links(self, network=None):
 153         return PGv2Link.get_links(self.xml)
 154
 155     def get_link_requests(self):
 156         return PGv2Link.get_link_requests(self.xml)
 157
 158     def add_links(self, links):
 159         PGv2Link.add_links(self.xml.root, links)
 160
 161     def add_link_requests(self, link_tuples, append=False):
 162         PGv2Link.add_link_requests(self.xml.root, link_tuples, append)
 163
 164     # Utility
 165
 166     def merge(self, in_rspec):
 167         """
 168         Merge contents for specified rspec with current rspec
 169         """
 170         from sfa.rspecs.rspec import RSpec
 171         # just copy over all the child elements under the root element
 172         if isinstance(in_rspec, RSpec):
 173             in_rspec = in_rspec.toxml()
 174
 175         rspec = RSpec(in_rspec)
 176         for child in rspec.xml.iterchildren():
 177             self.xml.root.append(child)
 178
 179     def cleanup(self):
 180         # remove unncecessary elements, attributes
 181         if self.type in ['request', 'manifest']:
 182             # remove 'available' element from remaining node elements
 183             self.xml.remove_element('//default:available | //available')
 184
 185 class PGv2Ad(PGv2):
 186     enabled = True
 187     content_type = 'ad'
 188     schema = 'http://www.protogeni.net/resources/rspec/2/ad.xsd'
 189     template = '<rspec type="advertisement" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/ad.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 190
 191 class PGv2Request(PGv2):
 192     enabled = True
 193     content_type = 'request'
 194     schema = 'http://www.protogeni.net/resources/rspec/2/request.xsd'
 195     template = '<rspec type="request" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/request.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 196
 197 class PGv2Manifest(PGv2):
 198     enabled = True
 199     content_type = 'manifest'
 200     schema = 'http://www.protogeni.net/resources/rspec/2/manifest.xsd'
 201     template = '<rspec type="manifest" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/manifest.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 202
 203
 204
 205
 206 if __name__ == '__main__':
 207     from sfa.rspecs.rspec import RSpec
 208     from sfa.rspecs.rspec_elements import *
 209     r = RSpec('/tmp/pg.rspec')
 210     r.load_rspec_elements(PGv2.elements)
 211     r.namespaces = PGv2.namespaces
 212     print r.get(RSpecElements.NODE)