sfa/rspecs/elements/versions/pgv2Node.py

   1 from sfa.util.xrn import Xrn, get_leaf
   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
  20 class PGv2Node:
  21     @staticmethod
  22     def add_nodes(xml, nodes, rspec_content_type=None):
  23         node_elems = []
  24         for node in nodes:
  25             node_fields = ['component_manager_id', 'component_id', 'client_id', 'sliver_id', 'exclusive']
  26             node_elem = xml.add_instance('node', node, node_fields)
  27             node_elems.append(node_elem)
  28             # set component name
  29             if node.get('component_id'):
  30                 component_name = Xrn.unescape(get_leaf(Xrn(node['component_id']).get_hrn()))
  31                 node_elem.set('component_name', component_name)
  32             # set hardware types
  33             if node.get('hardware_types'):
  34                 for hardware_type in node.get('hardware_types', []):
  35                     node_elem.add_instance('hardware_type', hardware_type, HardwareType.fields)
  36             # set location
  37             if node.get('location'):
  38                 node_elem.add_instance('location', node['location'], Location.fields)
  39
  40             # set granularity
  41             if node.get('exclusive') == "true":
  42                 granularity = node.get('granularity')
  43                 node_elem.add_instance('granularity', granularity, granularity.fields)
  44             # set interfaces
  45             PGv2Interface.add_interfaces(node_elem, node.get('interfaces'))
  46             #if node.get('interfaces'):
  47             #    for interface in  node.get('interfaces', []):
  48             #        node_elem.add_instance('interface', interface, ['component_id', 'client_id'])
  49             # set available element
  50             if node.get('available'):
  51                 available_elem = node_elem.add_element('available', now=node['available'])
  52             # add services
  53             PGv2Services.add_services(node_elem, node.get('services', []))
  54             # add slivers
  55             slivers = node.get('slivers', [])
  56             if not slivers:
  57                 # we must still advertise the available sliver types
  58                 slivers = Sliver({'type': 'plab-vserver'})
  59                 # we must also advertise the available initscripts
  60                 slivers['tags'] = []
  61                 if node.get('pl_initscripts'):
  62                     for initscript in node.get('pl_initscripts', []):
  63                         slivers['tags'].append({'name': 'initscript', 'value': initscript['name']})
  64             PGv2SliverType.add_slivers(node_elem, slivers)
  65
  66             # advertise the node tags
  67             tags = node.get('tags', [])
  68             if tags:
  69                for tag in tags:
  70                     tag['name'] = tag.pop('tagname')
  71                     node_elem.add_instance('{%s}attribute' % xml.namespaces['planetlab'], tag, ['name', 'value'])
  72
  73             # add sliver tag in Request Rspec
  74             if rspec_content_type == "request":
  75                 node_elem.add_instance('sliver', '', [])
  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 = NodeElement(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'] = [dict(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 = [dict(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'] = [dict(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             # get boot state
 127             available_elems = node_elem.xpath('./default:available | ./available')
 128             if len(available_elems) > 0 and 'now' in available_elems[0].attrib:
 129                 if available_elems[0].attrib.get('now', '').lower() == 'true':
 130                     node['boot_state'] = 'boot'
 131                 else:
 132                     node['boot_state'] = 'disabled'
 133
 134             # get initscripts
 135             node['pl_initscripts'] = []
 136             initscript_elems = node_elem.xpath('./default:sliver_type/planetlab:initscript | ./sliver_type/initscript')
 137             if len(initscript_elems) > 0:
 138                 for initscript_elem in initscript_elems:
 139                     if 'name' in initscript_elem.attrib:
 140                         node['pl_initscripts'].append(dict(initscript_elem.attrib))
 141
 142             # get node tags
 143             tag_elems = node_elem.xpath('./planetlab:attribute | ./attribute')
 144             node['tags'] = []
 145             if len(tag_elems) > 0:
 146                 for tag_elem in tag_elems:
 147                     tag = dict(tag_elem.get_instance(Attribute))
 148                     tag['tagname'] = tag.pop('name')
 149                     node['tags'].append(tag)
 150         return nodes
 151
 152
 153     @staticmethod
 154     def add_slivers(xml, slivers):
 155         component_ids = []
 156         for sliver in slivers:
 157             filter = {}
 158             if isinstance(sliver, str):
 159                 filter['component_id'] = '*%s*' % sliver
 160                 sliver = {}
 161             elif 'component_id' in sliver and sliver['component_id']:
 162                 filter['component_id'] = '*%s*' % sliver['component_id']
 163             if not filter:
 164                 continue
 165             nodes = PGv2Node.get_nodes(xml, filter)
 166             if not nodes:
 167                 continue
 168             node = nodes[0]
 169             PGv2SliverType.add_slivers(node, sliver)
 170
 171     @staticmethod
 172     def remove_slivers(xml, hostnames):
 173         for hostname in hostnames:
 174             nodes = PGv2Node.get_nodes(xml, {'component_id': '*%s*' % hostname})
 175             for node in nodes:
 176                 slivers = PGv2SliverType.get_slivers(node.element)
 177                 for sliver in slivers:
 178                     node.element.remove(sliver.element)
 179 if __name__ == '__main__':
 180     from sfa.rspecs.rspec import RSpec
 181     import pdb
 182     r = RSpec('/tmp/emulab.rspec')
 183     r2 = RSpec(version = 'ProtoGENI')
 184     nodes = PGv2Node.get_nodes(r.xml)
 185     PGv2Node.add_nodes(r2.xml.root, nodes)
 186     #pdb.set_trace()
 187
 188