sfa/rspecs/elements/versions/slabv1Node.py

   1 from sfa.planetlab.plxrn import xrn_to_hostname
   2 from sfa.util.xrn import Xrn
   3 from sfa.util.xml import XpathFilter
   4 from sfa.rspecs.elements.node import Node
   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
   9 from sfa.rspecs.elements.interface import Interface
  10
  11 from sfa.rspecs.elements.versions.slabv1Sliver import Slabv1Sliver
  12 from sfa.util.sfalogging import logger
  13
  14 class SlabNode(Node):
  15     #First get the fields already defined in the class Node
  16     fields = list(Node.fields)
  17     #Extend it with senslab's specific fields
  18     fields.extend (['archi','radio','mobile'])
  19
  20
  21 class Slabv1Node:
  22     @staticmethod
  23     def add_nodes(xml, nodes):
  24         #Add network item in the xml
  25         network_elems = xml.xpath('//network')
  26         if len(network_elems) > 0:
  27             network_elem = network_elems[0]
  28         elif len(nodes) > 0 and nodes[0].get('component_manager_id'):
  29             network_urn = nodes[0]['component_manager_id']
  30             network_elem = xml.add_element('network', name = Xrn(network_urn).get_hrn())
  31         else:
  32             network_elem = xml
  33
  34         logger.debug("slabv1Node \t add_nodes nodes %s"%(nodes))
  35         node_elems = []
  36         #Then add nodes items to the network item in the xml
  37         for node in nodes:
  38             node_fields = ['component_manager_id', 'component_id', 'exclusive',\
  39                         'boot_state', 'mobile']
  40             node_elem = network_elem.add_instance('node', node, node_fields)
  41             node_elems.append(node_elem)
  42             # set component name
  43             if node.get('component_id'):
  44                 component_name = xrn_to_hostname(node['component_id'])
  45                 node_elem.set('component_name', component_name)
  46             # set hardware types
  47             if node.get('hardware_types'):
  48                 for hardware_type in node.get('hardware_types', []):
  49                     fields = HardwareType.fields
  50                     fields.extend(['archi','radio'])
  51                     node_elem.add_instance('hardware_type', node, fields)
  52
  53             # set location
  54             if node.get('location'):
  55                 node_elem.add_instance('location', node['location'], \
  56                                                         Location.fields)
  57              # add granularity of the reservation system
  58             granularity = node.get('granularity')
  59             if granularity:
  60                 node_elem.add_instance('granularity', granularity, granularity.fields)
  61
  62             # set interfaces
  63             #if node.get('interfaces'):
  64                 #for interface in  node.get('interfaces', []):
  65                     #node_elem.add_instance('interface', interface, ['component_id', 'client_id'])
  66             # set available element
  67             if node.get('boot_state'):
  68                 if node.get('boot_state').lower() == 'alive':
  69                     available_elem = node_elem.add_element('available', \
  70                                                                     now='true')
  71                 else:
  72                     available_elem = node_elem.add_element('available', \
  73                                                                 now='false')
  74
  75
  76             #if node.get('archi'):
  77                 #archi_elem = node_elem.add_instance('archi',node.get('archi') , ['archi'])
  78
  79
  80             #if node.get('radio'):
  81                 #radio_elem = node_elem.add_instance('radio', node.get('radio') , ['radio'])
  82
  83             ## add services
  84             #PGv2Services.add_services(node_elem, node.get('services', []))
  85             # add slivers
  86             slivers = node.get('slivers', [])
  87             if not slivers:
  88                 # we must still advertise the available sliver types
  89                 slivers = Sliver({'type': 'slab-node'})
  90                 # we must also advertise the available initscripts
  91                 #slivers['tags'] = []
  92                 #if node.get('pl_initscripts'):
  93                     #for initscript in node.get('pl_initscripts', []):
  94                         #slivers['tags'].append({'name': 'initscript', \
  95                                                 #'value': initscript['name']})
  96
  97             Slabv1Sliver.add_slivers(node_elem, slivers)
  98         return node_elems
  99
 100     @staticmethod
 101     def get_nodes(xml, filter={}):
 102         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), \
 103                                                     XpathFilter.xpath(filter))
 104         node_elems = xml.xpath(xpath)
 105         logger.debug("SLABV1NODE  \tget_nodes \tnode_elems %s"%(node_elems))
 106         return Slabv1Node.get_node_objs(node_elems)
 107
 108     @staticmethod
 109     def get_nodes_with_slivers(xml, sliver_filter={}):
 110
 111         xpath = '//node[count(sliver)>0] | \
 112                                 //default:node[count(default:sliver) > 0]'
 113         node_elems = xml.xpath(xpath)
 114         logger.debug("SLABV1NODE \tget_nodes_with_slivers  \
 115                                 node_elems %s"%(node_elems))
 116         return Slabv1Node.get_node_objs(node_elems)
 117
 118     @staticmethod
 119     def get_node_objs(node_elems):
 120         nodes = []
 121         for node_elem in node_elems:
 122             node = Node(node_elem.attrib, node_elem)
 123             nodes.append(node)
 124             if 'component_id' in node_elem.attrib:
 125                 node['authority_id'] = \
 126                     Xrn(node_elem.attrib['component_id']).get_authority_urn()
 127
 128             # get hardware types
 129             hardware_type_elems = node_elem.xpath('./default:hardware_type | \
 130                                                             ./hardware_type')
 131             node['hardware_types'] = [hw_type.get_instance(HardwareType) \
 132                                             for hw_type in hardware_type_elems]
 133
 134             # get location
 135             location_elems = node_elem.xpath('./default:location | ./location')
 136             locations = [location_elem.get_instance(Location) \
 137                                             for location_elem in location_elems]
 138             if len(locations) > 0:
 139                 node['location'] = locations[0]
 140
 141             # get interfaces
 142             iface_elems = node_elem.xpath('./default:interface | ./interface')
 143             node['interfaces'] = [iface_elem.get_instance(Interface) \
 144                                             for iface_elem in iface_elems]
 145
 146             # get services
 147             #node['services'] = PGv2Services.get_services(node_elem)
 148
 149             # get slivers
 150             node['slivers'] = Slabv1Sliver.get_slivers(node_elem)
 151             available_elems = node_elem.xpath('./default:available | \
 152                                                                 ./available')
 153             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 154                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 155                     node['boot_state'] = 'boot'
 156                 else:
 157                     node['boot_state'] = 'disabled'
 158         return nodes
 159
 160
 161     @staticmethod
 162     def add_slivers(xml, slivers):
 163         logger.debug("SLABv1NODE \tadd_slivers ")
 164         component_ids = []
 165         for sliver in slivers:
 166             filter_sliver = {}
 167             if isinstance(sliver, str):
 168                 filter_sliver['component_id'] = '*%s*' % sliver
 169                 sliver = {}
 170             elif 'component_id' in sliver and sliver['component_id']:
 171                 filter_sliver['component_id'] = '*%s*' % sliver['component_id']
 172             if not filter_sliver:
 173                 continue
 174             nodes = Slabv1Node.get_nodes(xml, filter_sliver)
 175             if not nodes:
 176                 continue
 177             node = nodes[0]
 178             Slabv1Sliver.add_slivers(node, sliver)
 179
 180     @staticmethod
 181     def remove_slivers(xml, hostnames):
 182         for hostname in hostnames:
 183             nodes = Slabv1Node.get_nodes(xml, \
 184                                     {'component_id': '*%s*' % hostname})
 185             for node in nodes:
 186                 slivers = Slabv1Sliver.get_slivers(node.element)
 187                 for sliver in slivers:
 188                     node.element.remove(sliver.element)
 189
 190
 191