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 class IotlabNode(NodeElement):
  14     #First get the fields already defined in the class Node
  15     fields = list(NodeElement.fields)
  16     #Extend it with iotlab's specific fields
  17     fields.extend (['archi', 'radio', 'mobile','position'])
  18
  19
  20 class IotlabPosition(Element):
  21     fields = ['x', 'y','z']
  22
  23 class IotlabLocation(Location):
  24     fields = list(Location.fields)
  25     fields.extend (['site'])
  26
  27
  28 class IotlabMobility(Element):
  29     """ Class to give information of a node's mobility, and what kind of
  30     mobility it is (train, roomba robot ...) """
  31     fields = ['mobile', 'mobility_type']
  32
  33
  34
  35 class Iotlabv1Node:
  36
  37     @staticmethod
  38     def add_connection_information(xml, ldap_username, sites_set):
  39         """ Adds login and ssh connection info in the network item in
  40         the xml. Does not create the network element, therefore
  41         should be used after add_nodes, which creates the network item.
  42
  43         """
  44         logger.debug(" add_connection_information ")
  45         #Get network item in the xml
  46         network_elems = xml.xpath('//network')
  47         if len(network_elems) > 0:
  48             network_elem = network_elems[0]
  49
  50             iotlab_network_dict = {}
  51             iotlab_network_dict['login'] = ldap_username
  52
  53             iotlab_network_dict['ssh'] = \
  54                 ['ssh ' + ldap_username + '@'+site+'.iotlab.info'
  55                  for site in sites_set]
  56             network_elem.set('ssh',
  57                              unicode(iotlab_network_dict['ssh']))
  58             network_elem.set('login', unicode(iotlab_network_dict['login']))
  59
  60     @staticmethod
  61     def add_nodes(xml, nodes,rspec_content_type=None):
  62         """Adds the nodes to the xml.
  63
  64         Adds the nodes as well as dedicated iotlab fields to the node xml
  65         element.
  66
  67         :param xml: the xml being constructed.
  68         :type xml: xml
  69         :param nodes: list of node dict
  70         :type nodes: list
  71         :returns: a list of node elements.
  72         :rtype: list
  73
  74         """
  75         #Add network item in the xml
  76         network_elems = xml.xpath('//network')
  77         if len(network_elems) > 0:
  78             network_elem = network_elems[0]
  79         elif len(nodes) > 0 and nodes[0].get('component_manager_id'):
  80             network_urn = nodes[0]['component_manager_id']
  81             network_elem = xml.add_element('network',
  82                                            name=Xrn(network_urn).get_hrn())
  83         else:
  84             network_elem = xml
  85
  86         node_elems = []
  87         #Then add nodes items to the network item in the xml
  88         for node in nodes:
  89             #Attach this node to the network element
  90             node_fields = ['component_manager_id', 'component_id', 'exclusive',
  91                            'boot_state', 'mobile']
  92             node_elem = network_elem.add_instance('node', node, node_fields)
  93             node_elems.append(node_elem)
  94
  95             #Set the attibutes of this node element
  96             for attribute in node:
  97             # set component name
  98                 if attribute is 'component_name':
  99                     component_name = node['component_name']
 100                     node_elem.set('component_name', component_name)
 101
 102             # set hardware types, extend fields to add Iotlab's architecture
 103             #and radio type
 104
 105                 if attribute is 'hardware_types':
 106                     for hardware_type in node.get('hardware_types', []):
 107                         fields = HardwareType.fields
 108                         fields.extend(['archi', 'radio'])
 109                         node_elem.add_instance('hardware_types', node, fields)
 110
 111             # set mobility
 112                 if attribute is 'mobility':
 113                     node_elem.add_instance('mobility', node['mobility'],
 114                                            IotlabMobility.fields)
 115             # set location
 116                 if attribute is 'location':
 117                     node_elem.add_instance('location', node['location'],
 118                                             IotlabLocation.fields)
 119
 120              # add granularity of the reservation system
 121              #TODO put the granularity in network instead SA 18/07/12
 122                 if attribute is 'granularity':
 123                     granularity = node['granularity']
 124                     if granularity:
 125                         node_elem.add_instance('granularity',
 126                                                granularity, granularity.fields)
 127
 128             # set available element
 129                 if attribute is 'boot_state':
 130                     if node.get('boot_state').lower() == 'alive':
 131                         available_elem = node_elem.add_element('available',
 132                                                                now='true')
 133                     else:
 134                         available_elem = node_elem.add_element('available',
 135                                                                now='false')
 136
 137             #set position
 138                 if attribute is 'position':
 139                     node_elem.add_instance('position', node['position'],
 140                                            IotlabPosition.fields)
 141             ## add services
 142             #PGv2Services.add_services(node_elem, node.get('services', []))
 143             # add slivers
 144                 if attribute is 'slivers':
 145                     slivers = node.get('slivers', [])
 146                     if not slivers:
 147                     # we must still advertise the available sliver types
 148                         slivers = Sliver({'type': 'iotlab-node'})
 149                     # we must also advertise the available initscripts
 150                     #slivers['tags'] = []
 151                     #if node.get('pl_initscripts'):
 152                         #for initscript in node.get('pl_initscripts', []):
 153                             #slivers['tags'].append({'name': 'initscript', \
 154                                                     #'value': initscript['name']})
 155
 156                     Iotlabv1Sliver.add_slivers(node_elem, slivers)
 157                 # add sliver tag in Request Rspec
 158             if rspec_content_type == "request":
 159                 node_elem.add_instance('sliver', '', [])
 160         return node_elems
 161
 162     @staticmethod
 163     def get_nodes(xml, filter=None):
 164         if filter is None: filter={}
 165         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), \
 166                                                     XpathFilter.xpath(filter))
 167         node_elems = xml.xpath(xpath)
 168         return Iotlabv1Node.get_node_objs(node_elems)
 169
 170     @staticmethod
 171     def get_nodes_with_slivers(xml, sliver_filter=None):
 172         if sliver_filter is None: sliver_filter={}
 173
 174         xpath = '//node[count(sliver)>0] | \
 175                                 //default:node[count(default:sliver) > 0]'
 176         node_elems = xml.xpath(xpath)
 177         logger.debug("SLABV1NODE \tget_nodes_with_slivers  \
 178                                 node_elems %s"%(node_elems))
 179         return Iotlabv1Node.get_node_objs(node_elems)
 180
 181     @staticmethod
 182     def get_node_objs(node_elems):
 183         nodes = []
 184         for node_elem in node_elems:
 185             node = NodeElement(node_elem.attrib, node_elem)
 186             nodes.append(node)
 187             if 'component_id' in node_elem.attrib:
 188                 node['authority_id'] = \
 189                     Xrn(node_elem.attrib['component_id']).get_authority_urn()
 190
 191             # get hardware types
 192             hardware_type_elems = node_elem.xpath('./default:hardware_type | \
 193                                                             ./hardware_type')
 194             node['hardware_types'] = [hw_type.get_instance(HardwareType) \
 195                                             for hw_type in hardware_type_elems]
 196
 197             # get location
 198             location_elems = node_elem.xpath('./default:location | ./location')
 199             locations = [location_elem.get_instance(Location) \
 200                                             for location_elem in location_elems]
 201             if len(locations) > 0:
 202                 node['location'] = locations[0]
 203
 204
 205             # get interfaces
 206             iface_elems = node_elem.xpath('./default:interface | ./interface')
 207             node['interfaces'] = [iface_elem.get_instance(Interface) \
 208                                             for iface_elem in iface_elems]
 209
 210             # get position
 211             position_elems = node_elem.xpath('./default:position | ./position')
 212             if position_elems:
 213                 position_elem = position_elems[0]
 214                 node['position'] = position_elem.get_instance(IotlabPosition)
 215
 216             # get services
 217             #node['services'] = PGv2Services.get_services(node_elem)
 218
 219             # get slivers
 220             node['slivers'] = Iotlabv1Sliver.get_slivers(node_elem)
 221             available_elems = node_elem.xpath('./default:available | \
 222                                                                 ./available')
 223             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 224                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 225                     node['boot_state'] = 'boot'
 226                 else:
 227                     node['boot_state'] = 'disabled'
 228
 229         logger.debug("SLABV1NODE \tget_nodes_objs  \
 230                                 #nodes %s"%(nodes))
 231         return nodes
 232
 233
 234     @staticmethod
 235     def add_slivers(xml, slivers):
 236         logger.debug("Iotlabv1NODE \tadd_slivers ")
 237         component_ids = []
 238         for sliver in slivers:
 239             filter_sliver = {}
 240             if isinstance(sliver, str):
 241                 filter_sliver['component_id'] = '*%s*' % sliver
 242                 sliver = {}
 243             elif 'component_id' in sliver and sliver['component_id']:
 244                 filter_sliver['component_id'] = '*%s*' % sliver['component_id']
 245             if not filter_sliver:
 246                 continue
 247             nodes = Iotlabv1Node.get_nodes(xml, filter_sliver)
 248             if not nodes:
 249                 continue
 250             node = nodes[0]
 251             Iotlabv1Sliver.add_slivers(node, sliver)
 252
 253     @staticmethod
 254     def remove_slivers(xml, hostnames):
 255         for hostname in hostnames:
 256             nodes = Iotlabv1Node.get_nodes(xml, \
 257                                     {'component_id': '*%s*' % hostname})
 258             for node in nodes:
 259                 slivers = Iotlabv1Sliver.get_slivers(node.element)
 260                 for sliver in slivers:
 261                     node.element.remove(sliver.element)
 262
 263
 264