sfa/rspecs/versions/pgv2.py

   1 from copy import deepcopy
   2 from StringIO import StringIO
   3 from sfa.util.xrn import Xrn
   4 from sfa.rspecs.version import RSpecVersion
   5 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
   6 from sfa.rspecs.elements.versions.pgv2Node import PGv2Node
   7 from sfa.rspecs.elements.versions.pgv2SliverType import PGv2SliverType
   8 from sfa.rspecs.elements.versions.pgv2Lease import PGv2Lease
   9
  10 class PGv2(RSpecVersion):
  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         'plos': "http://www.planet-lab.org/resources/sfa/ext/plos/1",
  20     }
  21     namespaces = dict(extensions.items() + [('default', namespace)])
  22
  23     # Networks
  24     def get_networks(self):
  25         network_names = set()
  26         nodes = self.xml.xpath('//default:node[@component_manager_id] | //node[@component_manager_id]', namespaces=self.namespaces)
  27         for node in nodes:
  28             if 'component_manager_id' in node.attrib:
  29                 network_urn = node.get('component_manager_id')
  30                 if network_urn.startswith("urn:"):
  31                     network_hrn = Xrn(network_urn).get_hrn()
  32                 else:
  33                     # some component_manager_ids are hrns instead of urns??
  34                     network_hrn = network_urn
  35                 network_names.add(network_hrn)
  36         network_names = list(network_names)
  37         networks = [{"name": x} for x in network_names]
  38         return networks
  39
  40     # Nodes
  41
  42     def get_nodes(self, filter=None):
  43         return PGv2Node.get_nodes(self.xml, filter)
  44
  45     def get_nodes_with_slivers(self):
  46         return PGv2Node.get_nodes_with_slivers(self.xml)
  47
  48     def add_nodes(self, nodes, check_for_dupes=False, rspec_content_type=None):
  49         return PGv2Node.add_nodes(self.xml, nodes, rspec_content_type)
  50
  51     def merge_node(self, source_node_tag):
  52         # this is untested
  53         self.xml.root.append(deepcopy(source_node_tag))
  54
  55     # Slivers
  56
  57     def get_sliver_attributes(self, hostname, network=None):
  58         nodes = self.get_nodes({'component_id': '*%s*' %hostname})
  59         attribs = []
  60         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
  61             node = nodes[0]
  62             sliver = node.xpath('./default:sliver_type', namespaces=self.namespaces)
  63             if sliver is not None and isinstance(sliver, list) and len(sliver) > 0:
  64                 sliver = sliver[0]
  65                 #attribs = self.attributes_list(sliver)
  66         return attribs
  67
  68     def get_slice_attributes(self, network=None):
  69         slice_attributes = []
  70         nodes_with_slivers = self.get_nodes_with_slivers()
  71         # TODO: default sliver attributes in the PG rspec?
  72         default_ns_prefix = self.namespaces['default']
  73         for node in nodes_with_slivers:
  74             sliver_attributes = self.get_sliver_attributes(node, network)
  75             for sliver_attribute in sliver_attributes:
  76                 name=str(sliver_attribute[0])
  77                 text =str(sliver_attribute[1])
  78                 attribs = sliver_attribute[2]
  79                 # we currently only suppor the <initscript> and <flack> attributes
  80                 if  'info' in name:
  81                     attribute = {'name': 'flack_info', 'value': str(attribs), 'node_id': node}
  82                     slice_attributes.append(attribute)
  83                 elif 'initscript' in name:
  84                     if attribs is not None and 'name' in attribs:
  85                         value = attribs['name']
  86                     else:
  87                         value = text
  88                     attribute = {'name': 'initscript', 'value': value, 'node_id': node}
  89                     slice_attributes.append(attribute)
  90
  91         return slice_attributes
  92
  93     def attributes_list(self, elem):
  94         opts = []
  95         if elem is not None:
  96             for e in elem:
  97                 opts.append((e.tag, str(e.text).strip(), e.attrib))
  98         return opts
  99
 100     def get_default_sliver_attributes(self, network=None):
 101         return []
 102
 103     def add_default_sliver_attribute(self, name, value, network=None):
 104         pass
 105
 106     def add_slivers(self, hostnames, attributes=[], sliver_urn=None, append=False):
 107         # all nodes hould already be present in the rspec. Remove all
 108         # nodes that done have slivers
 109         for hostname in hostnames:
 110             node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
 111             if not node_elems:
 112                 continue
 113             node_elem = node_elems[0]
 114
 115             # determine sliver types for this node
 116             valid_sliver_types = ['emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
 117             requested_sliver_type = None
 118             for sliver_type in node_elem.get('slivers', []):
 119                 if sliver_type.get('type') in valid_sliver_types:
 120                     requested_sliver_type = sliver_type['type']
 121
 122             if not requested_sliver_type:
 123                 continue
 124             sliver = {'type': requested_sliver_type,
 125                      'pl_tags': attributes}
 126
 127             # remove available element
 128             for available_elem in node_elem.xpath('./default:available | ./available'):
 129                 node_elem.remove(available_elem)
 130
 131             # remove interface elements
 132             for interface_elem in node_elem.xpath('./default:interface | ./interface'):
 133                 node_elem.remove(interface_elem)
 134
 135             # remove existing sliver_type elements
 136             for sliver_type in node_elem.get('slivers', []):
 137                 node_elem.element.remove(sliver_type.element)
 138
 139             # set the client id
 140             node_elem.element.set('client_id', hostname)
 141             if sliver_urn:
 142                 pass
 143                 # TODO
 144                 # set the sliver id
 145                 #slice_id = sliver_info.get('slice_id', -1)
 146                 #node_id = sliver_info.get('node_id', -1)
 147                 #sliver_id = Xrn(xrn=sliver_urn, type='slice', id=str(node_id)).get_urn()
 148                 #node_elem.set('sliver_id', sliver_id)
 149
 150             # add the sliver type elemnt
 151             PGv2SliverType.add_slivers(node_elem.element, sliver)
 152
 153         # remove all nodes without slivers
 154         if not append:
 155             for node_elem in self.get_nodes():
 156                 if not node_elem['client_id']:
 157                     parent = node_elem.element.getparent()
 158                     parent.remove(node_elem.element)
 159
 160     def remove_slivers(self, slivers, network=None, no_dupes=False):
 161         PGv2Node.remove_slivers(self.xml, slivers)
 162
 163     # Links
 164
 165     def get_links(self, network=None):
 166         return PGv2Link.get_links(self.xml)
 167
 168     def get_link_requests(self):
 169         return PGv2Link.get_link_requests(self.xml)
 170
 171     def add_links(self, links):
 172         PGv2Link.add_links(self.xml.root, links)
 173
 174     def add_link_requests(self, link_tuples, append=False):
 175         PGv2Link.add_link_requests(self.xml.root, link_tuples, append)
 176
 177     # Leases
 178
 179     def get_leases(self, filter=None):
 180         return PGv2Lease.get_leases(self.xml, filter)
 181
 182     def add_leases(self, leases, network = None, no_dupes=False):
 183         PGv2Lease.add_leases(self.xml, leases)
 184
 185     # Spectrum
 186
 187     def get_channels(self, filter=None):
 188         return []
 189
 190     def add_channels(self, channels, network = None, no_dupes=False):
 191         pass
 192
 193     # Utility
 194
 195     def merge(self, in_rspec):
 196         """
 197         Merge contents for specified rspec with current rspec
 198         """
 199         from sfa.rspecs.rspec import RSpec
 200         # just copy over all the child elements under the root element
 201         if isinstance(in_rspec, basestring):
 202             in_rspec = RSpec(in_rspec)
 203
 204         nodes = in_rspec.version.get_nodes()
 205         # protogeni rspecs need to advertise the availabel sliver types
 206         main_nodes = []
 207         for node in nodes:
 208             if not node['component_name']:
 209                 # this node element is part of a lease
 210                 continue
 211             if not node.has_key('sliver') or not node['sliver']:
 212                 node['sliver'] = {'name': 'plab-vserver'}
 213                 main_nodes.append(node)
 214         self.add_nodes(main_nodes)
 215         self.add_links(in_rspec.version.get_links())
 216
 217         # Leases
 218         leases = in_rspec.version.get_leases()
 219         self.add_leases(leases)
 220         #
 221         #rspec = RSpec(in_rspec)
 222         #for child in rspec.xml.iterchildren():
 223         #    self.xml.root.append(child)
 224
 225
 226
 227     def cleanup(self):
 228         # remove unncecessary elements, attributes
 229         if self.type in ['request', 'manifest']:
 230             # remove 'available' element from remaining node elements
 231             self.xml.remove_element('//default:available | //available')
 232
 233 class PGv2Ad(PGv2):
 234     enabled = True
 235     content_type = 'ad'
 236     schema = 'http://www.protogeni.net/resources/rspec/2/ad.xsd'
 237     template = '<rspec type="advertisement" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:plos="http://www.planet-lab.org/resources/sfa/ext/plos/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 http://www.planet-lab.org/resources/sfa/ext/plos/1 http://www.planet-lab.org/resources/sfa/ext/plos/1/plos.xsd"/>'
 238
 239 class PGv2Request(PGv2):
 240     enabled = True
 241     content_type = 'request'
 242     schema = 'http://www.protogeni.net/resources/rspec/2/request.xsd'
 243     template = '<rspec type="request" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:plos="http://www.planet-lab.org/resources/sfa/ext/plos/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 http://www.planet-lab.org/resources/sfa/ext/plos/1 http://www.planet-lab.org/resources/sfa/ext/plos/1/plos.xsd"/>'
 244
 245 class PGv2Manifest(PGv2):
 246     enabled = True
 247     content_type = 'manifest'
 248     schema = 'http://www.protogeni.net/resources/rspec/2/manifest.xsd'
 249     template = '<rspec type="manifest" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:plos="http://www.planet-lab.org/resources/sfa/ext/plos/1" 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 http://www.planet-lab.org/resources/sfa/ext/plos/1 http://www.planet-lab.org/resources/sfa/ext/plos/1/plos.xsd"/>'
 250
 251
 252
 253
 254 if __name__ == '__main__':
 255     from sfa.rspecs.rspec import RSpec
 256     from sfa.rspecs.rspec_elements import *
 257     r = RSpec('/tmp/pg.rspec')
 258     r.load_rspec_elements(PGv2.elements)
 259     r.namespaces = PGv2.namespaces
 260     print r.get(RSpecElements.NODE)