sfa/rspecs/elements/versions/sfav1Node.py

   1 from sfa.util.sfalogging import logger
   2 from sfa.util.xml import XpathFilter
   3 from sfa.util.xrn import Xrn, get_leaf
   4
   5 from sfa.rspecs.elements.element import Element
   6 from sfa.rspecs.elements.node import NodeElement
   7 from sfa.rspecs.elements.sliver import Sliver
   8 from sfa.rspecs.elements.location import Location
   9 from sfa.rspecs.elements.hardware_type import HardwareType
  10 from sfa.rspecs.elements.disk_image import DiskImage
  11 from sfa.rspecs.elements.interface import Interface
  12 from sfa.rspecs.elements.bwlimit import BWlimit
  13 from sfa.rspecs.elements.pltag import PLTag
  14 from sfa.rspecs.elements.versions.sfav1Sliver import SFAv1Sliver
  15 from sfa.rspecs.elements.versions.sfav1PLTag import SFAv1PLTag
  16 from sfa.rspecs.elements.versions.pgv2Services import PGv2Services
  17
  18
  19 class SFAv1Node:
  20
  21     @staticmethod
  22     def add_nodes(xml, nodes, rspec_content_type=None):
  23         network_elems = xml.xpath('//network')
  24         if len(network_elems) > 0:
  25             network_elem = network_elems[0]
  26         elif len(nodes) > 0 and nodes[0].get('component_manager_id'):
  27             network_urn = nodes[0]['component_manager_id']
  28             network_elem = xml.add_element('network', name = Xrn(network_urn).get_hrn())
  29         else:
  30             network_elem = xml
  31
  32         node_elems = []
  33         for node in nodes:
  34             node_fields = ['component_manager_id', 'component_id', 'boot_state']
  35             node_elem = network_elem.add_instance('node', node, node_fields)
  36             node_elems.append(node_elem)
  37
  38             # determine network hrn
  39             network_hrn = None
  40             if 'component_manager_id' in node and node['component_manager_id']:
  41                 network_hrn = Xrn(node['component_manager_id']).get_hrn()
  42
  43             # set component_name attribute and  hostname element
  44             if 'component_id' in node and node['component_id']:
  45                 component_name = Xrn.unescape(get_leaf(Xrn(node['component_id']).get_hrn()))
  46                 node_elem.set('component_name', component_name)
  47                 hostname_elem = node_elem.add_element('hostname')
  48                 hostname_elem.set_text(component_name)
  49
  50             # set site id
  51             if 'authority_id' in node and node['authority_id']:
  52                 node_elem.set('site_id', node['authority_id'])
  53
  54             # add locaiton
  55             location = node.get('location')
  56             if location:
  57                 node_elem.add_instance('location', location, Location.fields)
  58
  59             # add exclusive tag to distinguish between Reservable and Shared nodes
  60             exclusive_elem = node_elem.add_element('exclusive')
  61             if node.get('exclusive') and node.get('exclusive') == 'true':
  62                 exclusive_elem.set_text('TRUE')
  63                 # add granularity of the reservation system
  64                 granularity = node.get('granularity')
  65                 if granularity:
  66                     node_elem.add_instance('granularity', granularity, granularity.fields)
  67             else:
  68                 exclusive_elem.set_text('FALSE')
  69
  70
  71             if isinstance(node.get('interfaces'), list):
  72                 for interface in node.get('interfaces', []):
  73                     node_elem.add_instance('interface', interface, ['component_id', 'client_id', 'ipv4'])
  74
  75             #if 'bw_unallocated' in node and node['bw_unallocated']:
  76             #    bw_unallocated = etree.SubElement(node_elem, 'bw_unallocated', units='kbps').text = str(int(node['bw_unallocated'])/1000)
  77
  78             PGv2Services.add_services(node_elem, node.get('services', []))
  79             tags = node.get('tags', [])
  80             if tags:
  81                 for tag in tags:
  82                     # backdoor for FITeagle
  83                     # Alexander Willner <alexander.willner@tu-berlin.de>
  84                     if tag['tagname']=="fiteagle_settings":
  85                         tag_elem = node_elem.add_element(tag['tagname'])
  86                         for subtag in tag['value']:
  87                             subtag_elem = tag_elem.add_element('setting')
  88                             subtag_elem.set('name', str(subtag['tagname']))
  89                             subtag_elem.set('description', str(subtag['description']))
  90                             subtag_elem.set_text(subtag['value'])
  91                     else:
  92                         tag_elem = node_elem.add_element(tag['tagname'])
  93                         tag_elem.set_text(tag['value'])
  94             SFAv1Sliver.add_slivers(node_elem, node.get('slivers', []))
  95
  96             # add sliver tag in Request Rspec
  97             if rspec_content_type == "request":
  98                 node_elem.add_instance('sliver', '', [])
  99
 100     @staticmethod
 101     def add_slivers(xml, slivers):
 102         component_ids = []
 103         for sliver in slivers:
 104             filter = {}
 105             if isinstance(sliver, str):
 106                 filter['component_id'] = '*%s*' % sliver
 107                 sliver = {}
 108             elif 'component_id' in sliver and sliver['component_id']:
 109                 filter['component_id'] = '*%s*' % sliver['component_id']
 110             if not filter:
 111                 continue
 112             nodes = SFAv1Node.get_nodes(xml, filter)
 113             if not nodes:
 114                 continue
 115             node = nodes[0]
 116             SFAv1Sliver.add_slivers(node, sliver)
 117
 118     @staticmethod
 119     def remove_slivers(xml, hostnames):
 120         for hostname in hostnames:
 121             nodes = SFAv1Node.get_nodes(xml, {'component_id': '*%s*' % hostname})
 122             for node in nodes:
 123                 slivers = SFAv1Sliver.get_slivers(node.element)
 124                 for sliver in slivers:
 125                     node.element.remove(sliver.element)
 126
 127     @staticmethod
 128     def get_nodes(xml, filter={}):
 129         xpath = '//node%s | //default:node%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
 130         node_elems = xml.xpath(xpath)
 131         return SFAv1Node.get_node_objs(node_elems)
 132
 133     @staticmethod
 134     def get_nodes_with_slivers(xml):
 135         xpath = '//node[count(sliver)>0] | //default:node[count(default:sliver)>0]'
 136         node_elems = xml.xpath(xpath)
 137         return SFAv1Node.get_node_objs(node_elems)
 138
 139
 140     @staticmethod
 141     def get_node_objs(node_elems):
 142         nodes = []
 143         for node_elem in node_elems:
 144             node = NodeElement(node_elem.attrib, node_elem)
 145             if 'site_id' in node_elem.attrib:
 146                 node['authority_id'] = node_elem.attrib['site_id']
 147             # get location
 148             location_elems = node_elem.xpath('./default:location | ./location')
 149             locations = [dict(loc_elem.get_instance(Location)) for loc_elem in location_elems]
 150             if len(locations) > 0:
 151                 node['location'] = locations[0]
 152             # get bwlimit
 153             bwlimit_elems = node_elem.xpath('./default:bw_limit | ./bw_limit')
 154             bwlimits = [bwlimit_elem.get_instance(BWlimit) for bwlimit_elem in bwlimit_elems]
 155             if len(bwlimits) > 0:
 156                 node['bwlimit'] = bwlimits[0]
 157             # get interfaces
 158             iface_elems = node_elem.xpath('./default:interface | ./interface')
 159             ifaces = [dict(iface_elem.get_instance(Interface)) for iface_elem in iface_elems]
 160             node['interfaces'] = ifaces
 161             # get services
 162             node['services'] = PGv2Services.get_services(node_elem)
 163             # get slivers
 164             node['slivers'] = SFAv1Sliver.get_slivers(node_elem)
 165             # get tags
 166             node['tags'] =  SFAv1PLTag.get_pl_tags(node_elem, ignore=NodeElement.fields+["hardware_type"])
 167             # get hardware types
 168             hardware_type_elems = node_elem.xpath('./default:hardware_type | ./hardware_type')
 169             node['hardware_types'] = [dict(hw_type.get_instance(HardwareType)) for hw_type in hardware_type_elems]
 170
 171             # temporary... play nice with old slice manager rspec
 172             if not node['component_name']:
 173                 hostname_elem = node_elem.find("hostname")
 174                 if hostname_elem != None:
 175                     node['component_name'] = hostname_elem.text
 176
 177             nodes.append(node)
 178         return nodes
 179