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