sfa/rspecs/elements/versions/pgv2Node.py

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