sfa/rspecs/elements/versions/slabv1Node.py

   1 from sfa.planetlab.plxrn import PlXrn, 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
  13 from sfa.rspecs.elements.versions.slabv1Sliver import Slabv1Sliver
  14 import sys
  15 class Slabv1Node:
  16     @staticmethod
  17     def add_nodes(xml, nodes):
  18
  19         node_elems = []
  20         for node in nodes:
  21             node_fields = ['component_manager_id', 'component_id', 'client_id', 'sliver_id', 'exclusive','boot_state']
  22             node_elem = xml.add_instance('node', node, node_fields)
  23             node_elems.append(node_elem)
  24             # set component name
  25             if node.get('component_id'):
  26                 component_name = xrn_to_hostname(node['component_id'])
  27                 node_elem.set('component_name', component_name)
  28             # set hardware types
  29             if node.get('hardware_types'):
  30                 for hardware_type in node.get('hardware_types', []):
  31                     node_elem.add_instance('hardware_type', hardware_type, HardwareType.fields)
  32             # set location
  33             if node.get('location'):
  34                 node_elem.add_instance('location', node['location'], Location.fields)
  35
  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() == 'alive':
  43                     available_elem = node_elem.add_element('available', now='true')
  44                 else:
  45                     available_elem = node_elem.add_element('available', now='false')
  46
  47             ## add services
  48             #PGv2Services.add_services(node_elem, node.get('services', []))
  49             # add slivers
  50             slivers = node.get('slivers', [])
  51             if not slivers:
  52                 # we must still advertise the available sliver types
  53                 slivers = Sliver({'type': 'slab-node'})
  54                 # we must also advertise the available initscripts
  55                 slivers['tags'] = []
  56                 if node.get('pl_initscripts'):
  57                     for initscript in node.get('pl_initscripts', []):
  58                         slivers['tags'].append({'name': 'initscript', 'value': initscript['name']})
  59
  60             Slabv1Sliver.add_slivers(node_elem, slivers)
  61         return node_elems
  62
  63     @staticmethod
  64     def get_nodes(xml, filter={}):
  65         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
  66         node_elems = xml.xpath(xpath)
  67         print>>sys.stderr, "\r\n \r\n \t\t \t SLABV1NODE.pY    get_nodes!!!!!!!!!   node_elems %s"%(node_elems)
  68         return Slabv1Node.get_node_objs(node_elems)
  69
  70     @staticmethod
  71     def get_nodes_with_slivers(xml, filter={}):
  72         #xpath = '//node[count(sliver_type)>0] | //default:node[count(default:sliver_type) > 0]'
  73         xpath = '//node[count(sliver)>0] | //default:node[count(default:sliver) > 0]'
  74         node_elems = xml.xpath(xpath)
  75         print>>sys.stderr, "\r\n \r\n \t\t \t SLABV1NODE.pY    get_nodes_with_slivers  node_elems %s"%(node_elems)
  76         return Slabv1Node.get_node_objs(node_elems)
  77
  78     @staticmethod
  79     def get_node_objs(node_elems):
  80         nodes = []
  81         for node_elem in node_elems:
  82             node = Node(node_elem.attrib, node_elem)
  83             nodes.append(node)
  84             if 'component_id' in node_elem.attrib:
  85                 node['authority_id'] = Xrn(node_elem.attrib['component_id']).get_authority_urn()
  86
  87             # get hardware types
  88             hardware_type_elems = node_elem.xpath('./default:hardware_type | ./hardware_type')
  89             node['hardware_types'] = [hw_type.get_instance(HardwareType) for hw_type in hardware_type_elems]
  90
  91             # get location
  92             location_elems = node_elem.xpath('./default:location | ./location')
  93             locations = [location_elem.get_instance(Location) for location_elem in location_elems]
  94             if len(locations) > 0:
  95                 node['location'] = locations[0]
  96
  97             # get interfaces
  98             iface_elems = node_elem.xpath('./default:interface | ./interface')
  99             node['interfaces'] = [iface_elem.get_instance(Interface) for iface_elem in iface_elems]
 100
 101             # get services
 102             #node['services'] = PGv2Services.get_services(node_elem)
 103
 104             # get slivers
 105             node['slivers'] = Slabv1Sliver.get_slivers(node_elem)
 106             available_elems = node_elem.xpath('./default:available | ./available')
 107             if len(available_elems) > 0 and 'name' in available_elems[0].attrib:
 108                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 109                     node['boot_state'] = 'boot'
 110                 else:
 111                     node['boot_state'] = 'disabled'
 112         return nodes
 113
 114
 115     @staticmethod
 116     def add_slivers(xml, slivers):
 117         print>>sys.stderr, "\r\n \r\n \t\t SLABv1NODE.PY add_slivers "
 118         component_ids = []
 119         for sliver in slivers:
 120             filter = {}
 121             if isinstance(sliver, str):
 122                 filter['component_id'] = '*%s*' % sliver
 123                 sliver = {}
 124             elif 'component_id' in sliver and sliver['component_id']:
 125                 filter['component_id'] = '*%s*' % sliver['component_id']
 126             if not filter:
 127                 continue
 128             nodes = Slabv1Node.get_nodes(xml, filter)
 129             if not nodes:
 130                 continue
 131             node = nodes[0]
 132             Slabv1Sliver.add_slivers(node, sliver)
 133
 134     @staticmethod
 135     def remove_slivers(xml, hostnames):
 136         for hostname in hostnames:
 137             nodes = Slabv1Node.get_nodes(xml, {'component_id': '*%s*' % hostname})
 138             for node in nodes:
 139                 slivers = Slabv1Sliver.get_slivers(node.element)
 140                 for sliver in slivers:
 141                     node.element.remove(sliver.element)
 142 if __name__ == '__main__':
 143     from sfa.rspecs.rspec import RSpec
 144
 145     r = RSpec('/tmp/slab.rspec')
 146     r2 = RSpec(version = 'slab')
 147     nodes = Slabv1Node.get_nodes(r.xml)
 148     Slabv1Node.add_nodes(r2.xml.root, nodes)
 149
 150
 151