sfa/rspecs/elements/versions/pgv2Node.py

   1 from sfa.util.xrn import Xrn
   2 from sfa.util.xml import XpathFilter
   3
   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 from sfa.rspecs.elements.disk_image import DiskImage
   9 from sfa.rspecs.elements.interface import Interface
  10 from sfa.rspecs.elements.bwlimit import BWlimit
  11 from sfa.rspecs.elements.pltag import PLTag
  12 from sfa.rspecs.elements.versions.pgv2Services import PGv2Services
  13 from sfa.rspecs.elements.versions.pgv2SliverType import PGv2SliverType
  14
  15 from sfa.planetlab.plxrn import xrn_to_hostname
  16
  17 class PGv2Node:
  18     @staticmethod
  19     def add_nodes(xml, nodes):
  20         node_elems = []
  21         for node in nodes:
  22             node_fields = ['component_manager_id', 'component_id', 'client_id', 'sliver_id', 'exclusive']
  23             node_elem = xml.add_instance('node', node, node_fields)
  24             node_elems.append(node_elem)
  25             # set component name
  26             if node.get('component_id'):
  27                 component_name = xrn_to_hostname(node['component_id'])
  28                 node_elem.set('component_name', component_name)
  29             # set hardware types
  30             if node.get('hardware_types'):
  31                 for hardware_type in node.get('hardware_types', []):
  32                     node_elem.add_instance('hardware_type', hardware_type, HardwareType.fields)
  33             # set location
  34             if node.get('location'):
  35                 node_elem.add_instance('location', node['location'], Location.fields)
  36             # set interfaces
  37             if node.get('interfaces'):
  38                 for interface in  node.get('interfaces', []):
  39                     node_elem.add_instance('interface', interface, ['component_id', 'client_id'])
  40             # set available element
  41             if node.get('boot_state'):
  42                 if node.get('boot_state').lower() == 'boot':
  43                     available_elem = node_elem.add_element('available', now='true')
  44                 else:
  45                     available_elem = node_elem.add_element('available', now='false')
  46             # add services
  47             PGv2Services.add_services(node_elem, node.get('services', []))
  48             # add slivers
  49             slivers = node.get('slivers', [])
  50             if not slivers:
  51                 # we must still advertise the available sliver types
  52                 slivers = Sliver({'type': 'plab-vserver'})
  53                 # we must also advertise the available initscripts
  54                 slivers['tags'] = []
  55                 if node.get('pl_initscripts'):
  56                     for initscript in node.get('pl_initscripts', []):
  57                         slivers['tags'].append({'name': 'initscript', 'value': initscript['name']})
  58             PGv2SliverType.add_slivers(node_elem, slivers)
  59
  60         return node_elems
  61
  62     @staticmethod
  63     def get_nodes(xml, filter={}):
  64         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
  65         node_elems = xml.xpath(xpath)
  66         return PGv2Node.get_node_objs(node_elems)
  67
  68     @staticmethod
  69     def get_nodes_with_slivers(xml, filter={}):
  70         xpath = '//node[count(sliver_type)>0] | //default:node[count(default:sliver_type) > 0]'
  71         node_elems = xml.xpath(xpath)
  72         return PGv2Node.get_node_objs(node_elems)
  73
  74     @staticmethod
  75     def get_node_objs(node_elems):
  76         nodes = []
  77         for node_elem in node_elems:
  78             node = Node(node_elem.attrib, node_elem)
  79             nodes.append(node)
  80             if 'component_id' in node_elem.attrib:
  81                 node['authority_id'] = Xrn(node_elem.attrib['component_id']).get_authority_urn()
  82
  83             # get hardware types
  84             hardware_type_elems = node_elem.xpath('./default:hardware_type | ./hardware_type')
  85             node['hardware_types'] = [hw_type.get_instance(HardwareType) for hw_type in hardware_type_elems]
  86
  87             # get location
  88             location_elems = node_elem.xpath('./default:location | ./location')
  89             locations = [location_elem.get_instance(Location) for location_elem in location_elems]
  90             if len(locations) > 0:
  91                 node['location'] = locations[0]
  92
  93             # get interfaces
  94             iface_elems = node_elem.xpath('./default:interface | ./interface')
  95             node['interfaces'] = [iface_elem.get_instance(Interface) for iface_elem in iface_elems]
  96
  97             # get services
  98             node['services'] = PGv2Services.get_services(node_elem)
  99
 100             # get slivers
 101             node['slivers'] = PGv2SliverType.get_slivers(node_elem)
 102             available_elems = node_elem.xpath('./default:available | ./available')
 103             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 104                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 105                     node['boot_state'] = 'boot'
 106                 else:
 107                     node['boot_state'] = 'disabled'
 108         return nodes
 109
 110
 111     @staticmethod
 112     def add_slivers(xml, slivers):
 113         component_ids = []
 114         for sliver in slivers:
 115             filter = {}
 116             if isinstance(sliver, str):
 117                 filter['component_id'] = '*%s*' % sliver
 118                 sliver = {}
 119             elif 'component_id' in sliver and sliver['component_id']:
 120                 filter['component_id'] = '*%s*' % sliver['component_id']
 121             if not filter:
 122                 continue
 123             nodes = PGv2Node.get_nodes(xml, filter)
 124             if not nodes:
 125                 continue
 126             node = nodes[0]
 127             PGv2SliverType.add_slivers(node, sliver)
 128
 129     @staticmethod
 130     def remove_slivers(xml, hostnames):
 131         for hostname in hostnames:
 132             nodes = PGv2Node.get_nodes(xml, {'component_id': '*%s*' % hostname})
 133             for node in nodes:
 134                 slivers = PGv2SliverType.get_slivers(node.element)
 135                 for sliver in slivers:
 136                     node.element.remove(sliver.element)
 137 if __name__ == '__main__':
 138     from sfa.rspecs.rspec import RSpec
 139     import pdb
 140     r = RSpec('/tmp/emulab.rspec')
 141     r2 = RSpec(version = 'ProtoGENI')
 142     nodes = PGv2Node.get_nodes(r.xml)
 143     PGv2Node.add_nodes(r2.xml.root, nodes)
 144     #pdb.set_trace()
 145
 146