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 from sfa.rspecs.elements.versions.pgv2Interface import PGv2Interface
  15 from sfa.rspecs.elements.versions.sfav1PLTag import SFAv1PLTag
  16 from sfa.rspecs.elements.granularity import Granularity
  17 from sfa.rspecs.elements.attribute import Attribute
  18
  19 from sfa.planetlab.plxrn import xrn_to_hostname
  20
  21 class PGv2Node:
  22     @staticmethod
  23     def add_nodes(xml, nodes):
  24         node_elems = []
  25         for node in nodes:
  26             node_fields = ['component_manager_id', 'component_id', 'client_id', 'sliver_id', 'exclusive']
  27             node_elem = xml.add_instance('node', node, node_fields)
  28             node_elems.append(node_elem)
  29             # set component name
  30             if node.get('component_id'):
  31                 component_name = xrn_to_hostname(node['component_id'])
  32                 node_elem.set('component_name', component_name)
  33             # set hardware types
  34             if node.get('hardware_types'):
  35                 for hardware_type in node.get('hardware_types', []):
  36                     node_elem.add_instance('hardware_type', hardware_type, HardwareType.fields)
  37             # set location
  38             if node.get('location'):
  39                 node_elem.add_instance('location', node['location'], Location.fields)
  40
  41             # set granularity
  42             if node['exclusive'] == "true":
  43                 granularity = node.get('granularity')
  44                 node_elem.add_instance('granularity', granularity, granularity.fields)
  45             # set interfaces
  46             PGv2Interface.add_interfaces(node_elem, node.get('interfaces'))
  47             #if node.get('interfaces'):
  48             #    for interface in  node.get('interfaces', []):
  49             #        node_elem.add_instance('interface', interface, ['component_id', 'client_id'])
  50             # set available element
  51             if node.get('boot_state'):
  52                 if node.get('boot_state').lower() == 'boot':
  53                     available_elem = node_elem.add_element('available', now='true')
  54                 else:
  55                     available_elem = node_elem.add_element('available', now='false')
  56             # add services
  57             PGv2Services.add_services(node_elem, node.get('services', []))
  58             # add slivers
  59             slivers = node.get('slivers', [])
  60             if not slivers:
  61                 # we must still advertise the available sliver types
  62                 slivers = Sliver({'type': 'plab-vserver'})
  63                 # we must also advertise the available initscripts
  64                 slivers['tags'] = []
  65                 if node.get('pl_initscripts'):
  66                     for initscript in node.get('pl_initscripts', []):
  67                         slivers['tags'].append({'name': 'initscript', 'value': initscript['name']})
  68             PGv2SliverType.add_slivers(node_elem, slivers)
  69
  70             # advertise the node tags
  71             tags = node.get('tags', [])
  72             if tags:
  73                for tag in tags:
  74                     tag['name'] = tag.pop('tagname')
  75                     node_elem.add_instance('{%s}attribute' % xml.namespaces['planetlab'], tag, ['name', 'value'])
  76
  77         return node_elems
  78
  79
  80     @staticmethod
  81     def get_nodes(xml, filter={}):
  82         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
  83         node_elems = xml.xpath(xpath)
  84         return PGv2Node.get_node_objs(node_elems)
  85
  86     @staticmethod
  87     def get_nodes_with_slivers(xml, filter={}):
  88         xpath = '//node[count(sliver_type)>0] | //default:node[count(default:sliver_type) > 0]'
  89         node_elems = xml.xpath(xpath)
  90         return PGv2Node.get_node_objs(node_elems)
  91
  92     @staticmethod
  93     def get_node_objs(node_elems):
  94         nodes = []
  95         for node_elem in node_elems:
  96             node = Node(node_elem.attrib, node_elem)
  97             nodes.append(node)
  98             if 'component_id' in node_elem.attrib:
  99                 node['authority_id'] = Xrn(node_elem.attrib['component_id']).get_authority_urn()
 100
 101             # get hardware types
 102             hardware_type_elems = node_elem.xpath('./default:hardware_type | ./hardware_type')
 103             node['hardware_types'] = [hw_type.get_instance(HardwareType) for hw_type in hardware_type_elems]
 104
 105             # get location
 106             location_elems = node_elem.xpath('./default:location | ./location')
 107             locations = [location_elem.get_instance(Location) for location_elem in location_elems]
 108             if len(locations) > 0:
 109                 node['location'] = locations[0]
 110
 111             # get granularity
 112             granularity_elems = node_elem.xpath('./default:granularity | ./granularity')
 113             if len(granularity_elems) > 0:
 114                 node['granularity'] = granularity_elems[0].get_instance(Granularity)
 115
 116             # get interfaces
 117             iface_elems = node_elem.xpath('./default:interface | ./interface')
 118             node['interfaces'] = [iface_elem.get_instance(Interface) for iface_elem in iface_elems]
 119
 120             # get services
 121             node['services'] = PGv2Services.get_services(node_elem)
 122
 123             # get slivers
 124             node['slivers'] = PGv2SliverType.get_slivers(node_elem)
 125
 126             available_elems = node_elem.xpath('./default:available | ./available')
 127             if len(available_elems) > 0 and 'now' in available_elems[0].attrib:
 128                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 129                     node['boot_state'] = 'boot'
 130                 else:
 131                     node['boot_state'] = 'disabled'
 132
 133             # get node tags
 134             tag_elems = node_elem.xpath('./planetlab:attribute | ./attribute')
 135             node['tags'] = []
 136             if len(tag_elems) > 0:
 137                 for tag_elem in tag_elems:
 138                     tag = tag_elem.get_instance(Attribute)
 139                     tag['tagname'] = tag.pop('name')
 140                     node['tags'].append(tag)
 141         return nodes
 142
 143
 144     @staticmethod
 145     def add_slivers(xml, slivers):
 146         component_ids = []
 147         for sliver in slivers:
 148             filter = {}
 149             if isinstance(sliver, str):
 150                 filter['component_id'] = '*%s*' % sliver
 151                 sliver = {}
 152             elif 'component_id' in sliver and sliver['component_id']:
 153                 filter['component_id'] = '*%s*' % sliver['component_id']
 154             if not filter:
 155                 continue
 156             nodes = PGv2Node.get_nodes(xml, filter)
 157             if not nodes:
 158                 continue
 159             node = nodes[0]
 160             PGv2SliverType.add_slivers(node, sliver)
 161
 162     @staticmethod
 163     def remove_slivers(xml, hostnames):
 164         for hostname in hostnames:
 165             nodes = PGv2Node.get_nodes(xml, {'component_id': '*%s*' % hostname})
 166             for node in nodes:
 167                 slivers = PGv2SliverType.get_slivers(node.element)
 168                 for sliver in slivers:
 169                     node.element.remove(sliver.element)
 170 if __name__ == '__main__':
 171     from sfa.rspecs.rspec import RSpec
 172     import pdb
 173     r = RSpec('/tmp/emulab.rspec')
 174     r2 = RSpec(version = 'ProtoGENI')
 175     nodes = PGv2Node.get_nodes(r.xml)
 176     PGv2Node.add_nodes(r2.xml.root, nodes)
 177     #pdb.set_trace()
 178
 179