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 = ['posx', 'posy','posz']
  22
  23 class IotlabLocation(Location):
  24     fields = list(Location.fields)
  25     fields.extend (['site'])
  26
  27
  28
  29
  30 class Iotlabv1Node:
  31
  32     @staticmethod
  33     def add_connection_information(xml, ldap_username, sites_set):
  34         """ Adds login and ssh connection info in the network item in
  35         the xml. Does not create the network element, therefore
  36         should be used after add_nodes, which creates the network item.
  37
  38         """
  39         logger.debug(" add_connection_information " )
  40         #Get network item in the xml
  41         network_elems = xml.xpath('//network')
  42         if len(network_elems) > 0:
  43             network_elem = network_elems[0]
  44
  45         iotlab_network_dict = {}
  46         iotlab_network_dict['login'] = ldap_username
  47
  48         iotlab_network_dict['ssh'] = \
  49             ['ssh ' + ldap_username + '@'+site+'.iotlab.info' \
  50             for site in sites_set]
  51         network_elem.set('ssh', \
  52                 unicode(iotlab_network_dict['ssh']))
  53         network_elem.set('login', unicode( iotlab_network_dict['login']))
  54
  55
  56     @staticmethod
  57     def add_nodes(xml, nodes):
  58         #Add network item in the xml
  59         network_elems = xml.xpath('//network')
  60         if len(network_elems) > 0:
  61             network_elem = network_elems[0]
  62         elif len(nodes) > 0 and nodes[0].get('component_manager_id'):
  63             network_urn = nodes[0]['component_manager_id']
  64             network_elem = xml.add_element('network', \
  65                                         name = Xrn(network_urn).get_hrn())
  66         else:
  67             network_elem = xml
  68
  69         logger.debug("iotlabv1Node \t add_nodes  nodes %s \r\n "%(nodes[0]))
  70         node_elems = []
  71         #Then add nodes items to the network item in the xml
  72         for node in nodes:
  73             #Attach this node to the network element
  74             node_fields = ['component_manager_id', 'component_id', 'exclusive',\
  75                                                     'boot_state', 'mobile']
  76             node_elem = network_elem.add_instance('node', node, node_fields)
  77             node_elems.append(node_elem)
  78
  79             #Set the attibutes of this node element
  80             for attribute in node:
  81             # set component name
  82                 if attribute is 'component_id':
  83                     component_name = node['component_name']
  84                     node_elem.set('component_name', component_name)
  85
  86             # set hardware types, extend fields to add Iotlab's architecture
  87             #and radio type
  88
  89                 if attribute is 'hardware_types':
  90                     for hardware_type in node.get('hardware_types', []):
  91                         fields = HardwareType.fields
  92                         fields.extend(['archi','radio'])
  93                         node_elem.add_instance('hardware_types', node, fields)
  94
  95             # set location
  96                 if attribute is 'location':
  97                     node_elem.add_instance('location', node['location'], \
  98                                                         IotlabLocation.fields)
  99              # add granularity of the reservation system
 100              #TODO put the granularity in network instead SA 18/07/12
 101                 if attribute is 'granularity' :
 102                     granularity = node['granularity']
 103                     if granularity:
 104                         node_elem.add_instance('granularity', \
 105                                     granularity, granularity.fields)
 106
 107
 108             # set available element
 109                 if attribute is 'boot_state':
 110                     if node.get('boot_state').lower() == 'alive':
 111                         available_elem = node_elem.add_element('available', \
 112                                                                     now='true')
 113                     else:
 114                         available_elem = node_elem.add_element('available', \
 115                                                                 now='false')
 116
 117             #set position
 118                 if attribute is 'position':
 119                     node_elem.add_instance('position', node['position'], \
 120                                                         IotlabPosition.fields)
 121             ## add services
 122             #PGv2Services.add_services(node_elem, node.get('services', []))
 123             # add slivers
 124                 if attribute is 'slivers':
 125                     slivers = node.get('slivers', [])
 126                     if not slivers:
 127                     # we must still advertise the available sliver types
 128                         slivers = Sliver({'type': 'iotlab-node'})
 129                     # we must also advertise the available initscripts
 130                     #slivers['tags'] = []
 131                     #if node.get('pl_initscripts'):
 132                         #for initscript in node.get('pl_initscripts', []):
 133                             #slivers['tags'].append({'name': 'initscript', \
 134                                                     #'value': initscript['name']})
 135
 136                     Iotlabv1Sliver.add_slivers(node_elem, slivers)
 137         return node_elems
 138
 139
 140
 141     @staticmethod
 142     def get_nodes(xml, filter={}):
 143         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), \
 144                                                     XpathFilter.xpath(filter))
 145         node_elems = xml.xpath(xpath)
 146         return Iotlabv1Node.get_node_objs(node_elems)
 147
 148     @staticmethod
 149     def get_nodes_with_slivers(xml, sliver_filter={}):
 150
 151         xpath = '//node[count(sliver)>0] | \
 152                                 //default:node[count(default:sliver) > 0]'
 153         node_elems = xml.xpath(xpath)
 154         logger.debug("SLABV1NODE \tget_nodes_with_slivers  \
 155                                 node_elems %s"%(node_elems))
 156         return Iotlabv1Node.get_node_objs(node_elems)
 157
 158     @staticmethod
 159     def get_node_objs(node_elems):
 160         nodes = []
 161         for node_elem in node_elems:
 162             node = NodeElement(node_elem.attrib, node_elem)
 163             nodes.append(node)
 164             if 'component_id' in node_elem.attrib:
 165                 node['authority_id'] = \
 166                     Xrn(node_elem.attrib['component_id']).get_authority_urn()
 167
 168             # get hardware types
 169             hardware_type_elems = node_elem.xpath('./default:hardware_type | \
 170                                                             ./hardware_type')
 171             node['hardware_types'] = [hw_type.get_instance(HardwareType) \
 172                                             for hw_type in hardware_type_elems]
 173
 174             # get location
 175             location_elems = node_elem.xpath('./default:location | ./location')
 176             locations = [location_elem.get_instance(Location) \
 177                                             for location_elem in location_elems]
 178             if len(locations) > 0:
 179                 node['location'] = locations[0]
 180
 181
 182             # get interfaces
 183             iface_elems = node_elem.xpath('./default:interface | ./interface')
 184             node['interfaces'] = [iface_elem.get_instance(Interface) \
 185                                             for iface_elem in iface_elems]
 186
 187             # get position
 188             position_elems = node_elem.xpath('./default:position | ./position')
 189             if position_elems:
 190                 position_elem = position_elems[0]
 191                 node['position'] = position_elem.get_instance(IotlabPosition)
 192
 193             # get services
 194             #node['services'] = PGv2Services.get_services(node_elem)
 195
 196             # get slivers
 197             node['slivers'] = Iotlabv1Sliver.get_slivers(node_elem)
 198             available_elems = node_elem.xpath('./default:available | \
 199                                                                 ./available')
 200             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 201                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 202                     node['boot_state'] = 'boot'
 203                 else:
 204                     node['boot_state'] = 'disabled'
 205
 206         logger.debug("SLABV1NODE \tget_nodes_objs  \
 207                                 #nodes %s"%(nodes))
 208         return nodes
 209
 210
 211     @staticmethod
 212     def add_slivers(xml, slivers):
 213         logger.debug("Iotlabv1NODE \tadd_slivers ")
 214         component_ids = []
 215         for sliver in slivers:
 216             filter_sliver = {}
 217             if isinstance(sliver, str):
 218                 filter_sliver['component_id'] = '*%s*' % sliver
 219                 sliver = {}
 220             elif 'component_id' in sliver and sliver['component_id']:
 221                 filter_sliver['component_id'] = '*%s*' % sliver['component_id']
 222             if not filter_sliver:
 223                 continue
 224             nodes = Iotlabv1Node.get_nodes(xml, filter_sliver)
 225             if not nodes:
 226                 continue
 227             node = nodes[0]
 228             Iotlabv1Sliver.add_slivers(node, sliver)
 229
 230     @staticmethod
 231     def remove_slivers(xml, hostnames):
 232         for hostname in hostnames:
 233             nodes = Iotlabv1Node.get_nodes(xml, \
 234                                     {'component_id': '*%s*' % hostname})
 235             for node in nodes:
 236                 slivers = Iotlabv1Sliver.get_slivers(node.element)
 237                 for sliver in slivers:
 238                     node.element.remove(sliver.element)
 239
 240
 241