sfa/rspecs/elements/versions/iotlabv1Node.py

   1
   2 from sfa.util.xrn import Xrn
   3 from sfa.util.xml import XpathFilter
   4 from sfa.rspecs.elements.node import NodeElement
   5 from sfa.rspecs.elements.sliver import Sliver
   6 from sfa.rspecs.elements.location import Location
   7 from sfa.rspecs.elements.hardware_type import HardwareType
   8 from sfa.rspecs.elements.element import Element
   9 from sfa.rspecs.elements.interface import Interface
  10 from sfa.rspecs.elements.versions.iotlabv1Sliver import Iotlabv1Sliver
  11 from sfa.util.sfalogging import logger
  12
  13
  14 class IotlabNode(NodeElement):
  15     # First get the fields already defined in the class Node
  16     fields = list(NodeElement.fields)
  17     # Extend it with iotlab's specific fields
  18     fields.extend(['archi', 'radio', 'mobile', 'position'])
  19
  20
  21 class IotlabPosition(Element):
  22     fields = ['x', 'y', 'z']
  23
  24
  25 class IotlabLocation(Location):
  26     fields = list(Location.fields)
  27     fields.extend(['site'])
  28
  29
  30 class IotlabMobility(Element):
  31     """ Class to give information of a node's mobility, and what kind of
  32     mobility it is (train, roomba robot ...) """
  33     fields = ['mobile', 'mobility_type']
  34
  35
  36 class Iotlabv1Node:
  37
  38     @staticmethod
  39     def add_connection_information(xml, ldap_username, sites_set):
  40         """ Adds login and ssh connection info in the network item in
  41         the xml. Does not create the network element, therefore
  42         should be used after add_nodes, which creates the network item.
  43
  44         """
  45         logger.debug(" add_connection_information ")
  46         # Get network item in the xml
  47         network_elems = xml.xpath('//network')
  48         if len(network_elems) > 0:
  49             network_elem = network_elems[0]
  50
  51             iotlab_network_dict = {}
  52             iotlab_network_dict['login'] = ldap_username
  53
  54             iotlab_network_dict['ssh'] = \
  55                 ['ssh ' + ldap_username + '@' + site + '.iotlab.info'
  56                  for site in sites_set]
  57             network_elem.set('ssh',
  58                              str(iotlab_network_dict['ssh']))
  59             network_elem.set('login', str(iotlab_network_dict['login']))
  60
  61     @staticmethod
  62     def add_nodes(xml, nodes, rspec_content_type=None):
  63         """Adds the nodes to the xml.
  64
  65         Adds the nodes as well as dedicated iotlab fields to the node xml
  66         element.
  67
  68         :param xml: the xml being constructed.
  69         :type xml: xml
  70         :param nodes: list of node dict
  71         :type nodes: list
  72         :returns: a list of node elements.
  73         :rtype: list
  74
  75         """
  76         # Add network item in the xml
  77         network_elems = xml.xpath('//network')
  78         if len(network_elems) > 0:
  79             network_elem = network_elems[0]
  80         elif len(nodes) > 0 and nodes[0].get('component_manager_id'):
  81             network_urn = nodes[0]['component_manager_id']
  82             network_elem = xml.add_element('network',
  83                                            name=Xrn(network_urn).get_hrn())
  84         else:
  85             network_elem = xml
  86
  87         node_elems = []
  88         # Then add nodes items to the network item in the xml
  89         for node in nodes:
  90             # Attach this node to the network element
  91             node_fields = ['component_manager_id', 'component_id', 'exclusive',
  92                            'boot_state', 'mobile']
  93             node_elem = network_elem.add_instance('node', node, node_fields)
  94             node_elems.append(node_elem)
  95
  96             # Set the attibutes of this node element
  97             for attribute in node:
  98                 # set component name
  99                 if attribute is 'component_name':
 100                     component_name = node['component_name']
 101                     node_elem.set('component_name', component_name)
 102
 103             # set hardware types, extend fields to add Iotlab's architecture
 104             # and radio type
 105
 106                 if attribute is 'hardware_types':
 107                     for hardware_type in node.get('hardware_types', []):
 108                         fields = HardwareType.fields
 109                         fields.extend(['archi', 'radio'])
 110                         node_elem.add_instance('hardware_types', node, fields)
 111
 112             # set mobility
 113                 if attribute is 'mobility':
 114                     node_elem.add_instance('mobility', node['mobility'],
 115                                            IotlabMobility.fields)
 116             # set location
 117                 if attribute is 'location':
 118                     node_elem.add_instance('location', node['location'],
 119                                            IotlabLocation.fields)
 120
 121              # add granularity of the reservation system
 122              # TODO put the granularity in network instead SA 18/07/12
 123                 if attribute is 'granularity':
 124                     granularity = node['granularity']
 125                     if granularity:
 126                         node_elem.add_instance('granularity',
 127                                                granularity, granularity.fields)
 128
 129             # set available element
 130                 if attribute is 'boot_state':
 131                     if node.get('boot_state').lower() == 'alive':
 132                         available_elem = node_elem.add_element('available',
 133                                                                now='true')
 134                     else:
 135                         available_elem = node_elem.add_element('available',
 136                                                                now='false')
 137
 138             # set position
 139                 if attribute is 'position':
 140                     node_elem.add_instance('position', node['position'],
 141                                            IotlabPosition.fields)
 142             # add services
 143             #PGv2Services.add_services(node_elem, node.get('services', []))
 144             # add slivers
 145                 if attribute is 'slivers':
 146                     slivers = node.get('slivers', [])
 147                     if not slivers:
 148                         # we must still advertise the available sliver types
 149                         slivers = Sliver({'type': 'iotlab-node'})
 150                     # we must also advertise the available initscripts
 151                     #slivers['tags'] = []
 152                     # if node.get('pl_initscripts'):
 153                         # for initscript in node.get('pl_initscripts', []):
 154                         # slivers['tags'].append({'name': 'initscript', \
 155                         #'value': initscript['name']})
 156
 157                     Iotlabv1Sliver.add_slivers(node_elem, slivers)
 158                 # add sliver tag in Request Rspec
 159             if rspec_content_type == "request":
 160                 node_elem.add_instance('sliver', '', [])
 161         return node_elems
 162
 163     @staticmethod
 164     def get_nodes(xml, filter=None):
 165         if filter is None:
 166             filter = {}
 167         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter),
 168                                                  XpathFilter.xpath(filter))
 169         node_elems = xml.xpath(xpath)
 170         return Iotlabv1Node.get_node_objs(node_elems)
 171
 172     @staticmethod
 173     def get_nodes_with_slivers(xml, sliver_filter=None):
 174         if sliver_filter is None:
 175             sliver_filter = {}
 176
 177         xpath = '//node[count(sliver)>0] | \
 178                                 //default:node[count(default:sliver) > 0]'
 179         node_elems = xml.xpath(xpath)
 180         logger.debug("SLABV1NODE \tget_nodes_with_slivers  \
 181                                 node_elems %s" % (node_elems))
 182         return Iotlabv1Node.get_node_objs(node_elems)
 183
 184     @staticmethod
 185     def get_node_objs(node_elems):
 186         nodes = []
 187         for node_elem in node_elems:
 188             node = NodeElement(node_elem.attrib, node_elem)
 189             nodes.append(node)
 190             if 'component_id' in node_elem.attrib:
 191                 node['authority_id'] = \
 192                     Xrn(node_elem.attrib['component_id']).get_authority_urn()
 193
 194             # get hardware types
 195             hardware_type_elems = node_elem.xpath('./default:hardware_type | \
 196                                                             ./hardware_type')
 197             node['hardware_types'] = [hw_type.get_instance(HardwareType)
 198                                       for hw_type in hardware_type_elems]
 199
 200             # get location
 201             location_elems = node_elem.xpath('./default:location | ./location')
 202             locations = [location_elem.get_instance(Location)
 203                          for location_elem in location_elems]
 204             if len(locations) > 0:
 205                 node['location'] = locations[0]
 206
 207             # get interfaces
 208             iface_elems = node_elem.xpath('./default:interface | ./interface')
 209             node['interfaces'] = [iface_elem.get_instance(Interface)
 210                                   for iface_elem in iface_elems]
 211
 212             # get position
 213             position_elems = node_elem.xpath('./default:position | ./position')
 214             if position_elems:
 215                 position_elem = position_elems[0]
 216                 node['position'] = position_elem.get_instance(IotlabPosition)
 217
 218             # get services
 219             #node['services'] = PGv2Services.get_services(node_elem)
 220
 221             # get slivers
 222             node['slivers'] = Iotlabv1Sliver.get_slivers(node_elem)
 223             available_elems = node_elem.xpath('./default:available | \
 224                                                                 ./available')
 225             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 226                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 227                     node['boot_state'] = 'boot'
 228                 else:
 229                     node['boot_state'] = 'disabled'
 230
 231         logger.debug("SLABV1NODE \tget_nodes_objs  \
 232                                 #nodes %s" % (nodes))
 233         return nodes
 234
 235     @staticmethod
 236     def add_slivers(xml, slivers):
 237         logger.debug("Iotlabv1NODE \tadd_slivers ")
 238         component_ids = []
 239         for sliver in slivers:
 240             filter_sliver = {}
 241             if isinstance(sliver, str):
 242                 filter_sliver['component_id'] = '*%s*' % sliver
 243                 sliver = {}
 244             elif 'component_id' in sliver and sliver['component_id']:
 245                 filter_sliver['component_id'] = '*%s*' % sliver['component_id']
 246             if not filter_sliver:
 247                 continue
 248             nodes = Iotlabv1Node.get_nodes(xml, filter_sliver)
 249             if not nodes:
 250                 continue
 251             node = nodes[0]
 252             Iotlabv1Sliver.add_slivers(node, sliver)
 253
 254     @staticmethod
 255     def remove_slivers(xml, hostnames):
 256         for hostname in hostnames:
 257             nodes = Iotlabv1Node.get_nodes(xml,
 258                                            {'component_id': '*%s*' % hostname})
 259             for node in nodes:
 260                 slivers = Iotlabv1Sliver.get_slivers(node.element)
 261                 for sliver in slivers:
 262                     node.element.remove(sliver.element)