sface/sfidata.py

   1 import os
   2 import pickle
   3 from PyQt4.QtCore import *
   4 from PyQt4.QtGui import *
   5
   6 from lxml import etree
   7 from sfa.util.xrn import hrn_to_urn, urn_to_hrn
   8 from sfa.util.record import SfaRecord, SliceRecord, AuthorityRecord, UserRecord
   9 from sfa.rspecs.rspec import RSpec
  10 from sface.config import config
  11
  12 # SfaceRSpec
  13 # temporary, until these references are tracked down and replaced with
  14 # rspec.version
  15
  16 class SfaceRSpec(RSpec):
  17     def __init__(self, rspec="", version=None, user_options={}):
  18         RSpec.__init__(self, rspec, version, user_options)
  19
  20     def get_networks(self):
  21         return self.version.get_networks()
  22
  23     def get_nodes(self, network):
  24         return self.version.get_nodes(network)
  25
  26     def get_nodes_with_slivers(self, network):
  27         return self.version.get_nodes_with_slivers(network)
  28
  29     def get_node_element(self, node, network=None):
  30         return self.version.get_node_element(node, network)
  31
  32     def get_default_sliver_attributes(self, network):
  33         return self.version.get_default_sliver_attributes(network)
  34
  35     def get_sliver_attributes(self, node, network):
  36         return self.version.get_sliver_attributes(node, network)
  37
  38     def remove_slivers(self, slivers, network=None, no_dupes=False):
  39         return self.version.remove_slivers(slivers, network, no_dupes)
  40
  41     def add_default_sliver_attribute(self, name, value, network=None):
  42         self.version.add_default_sliver_attribute(name, value, network)
  43
  44     def add_sliver_attribute(self, hostname, name, value, network=None):
  45         self.version.add_sliver_attribute(hostname, name, value, network)
  46
  47     def remove_default_sliver_attribute(self, name, value, network=None):
  48         self.version.remove_default_sliver_attribute(name, value, network)
  49
  50     def remove_sliver_attribute(self, hostname, name, value, network=None):
  51         self.version.remove_sliver_attribute(hostname, name, value, network)
  52
  53     #def add_slivers(self, slivers, network=None, sliver_urn=None, no_dupes=False):
  54     #    return self.version.add_slivers(slivers, network, sliver_urn, no_dupes)
  55
  56     def merge_node(self, source_node_tag, network, no_dupes=False):
  57         return self.version.merge_node(source_node_tag, network, no_dupes)
  58
  59     # sfav1.add_slivers isn't working for us...
  60     def add_slivers(self, slivers, network=None, sliver_urn=None, no_dupes=False):
  61         # add slice name to network tag
  62         network_tags = self.xml.xpath('//network')
  63         if network_tags:
  64             network_tag = network_tags[0]
  65             network_tag.set('slice', urn_to_hrn(sliver_urn)[0])
  66
  67         # add slivers
  68         for sliver in slivers:
  69             node_elem = self.get_node_element(sliver['hostname'], network)
  70             if not node_elem: continue
  71             sliver_elem = etree.SubElement(node_elem, 'sliver')
  72             if 'tags' in sliver:
  73                 for tag in sliver['tags']:
  74                     etree.SubElement(sliver_elem, tag['tagname']).text = value=tag['value']
  75
  76 class SfiData:
  77     def __init__(self):
  78         pass
  79
  80     def getAuthorityHrns(self, type=None):
  81         names = []
  82         if os.path.exists(config.getAuthorityListFile()):
  83             xml = open(config.getAuthorityListFile()).read()
  84             tree = etree.fromstring(xml)
  85             records = tree.xpath("//recordlist/record")
  86
  87             for record in records:
  88                 recType = record.attrib.get("type", None)
  89                 recHrn = record.attrib.get("hrn", None)
  90                 if (type==None) or (type==recType):
  91                     names.append(recHrn)
  92
  93         return names
  94
  95     def getSliceRecord(self):
  96         rec_file = config.getSliceRecordFile()
  97         if os.path.exists(rec_file):
  98             xml = open(rec_file).read()
  99             rec = SliceRecord()
 100             rec.load_from_string(xml)
 101             return rec
 102         return None
 103
 104     def getUserRecord(self):
 105         rec_file = config.getUserRecordFile()
 106         if os.path.exists(rec_file):
 107             xml = open(rec_file).read()
 108             rec = UserRecord()
 109             rec.load_from_string(xml)
 110             return rec
 111         return None
 112
 113     def getUserSliceHrns(self):
 114         rec = self.getUserRecord()
 115         if rec:
 116             return rec.get_field("slices")
 117
 118         return []
 119
 120     def purgeNonSliceResources(self, rspec):
 121         # This can probably go away once the new slice manager is fully
 122         # deployed.
 123         networks = rspec.get_networks()
 124         for network in networks:
 125             all_nodes = rspec.get_nodes(network)
 126             sliver_nodes = rspec.get_nodes_with_slivers(network)
 127             available_nodes = [ node for node in all_nodes if node not in sliver_nodes ]
 128
 129             for node in available_nodes:
 130                 node_elem = rspec.get_node_element(node, network)
 131                 parent = node_elem.xpath("..")[0]
 132                 parent.remove(node_elem)
 133
 134     def getSliceRSpec(self):
 135         rspec_file = config.getSliceRSpecFile()
 136         if os.path.exists(rspec_file):
 137             xml = open(rspec_file).read()
 138             rspec = SfaceRSpec(rspec=xml) #rspec = parse_rspec(xml)
 139
 140             self.purgeNonSliceResources(rspec)
 141
 142             return rspec
 143         return None
 144
 145     def getResourcesRSpec(self):
 146         rspec_file = config.getResourcesRSpecFile()
 147         if os.path.exists(rspec_file):
 148             xml = open(rspec_file).read()
 149             rspec = SfaceRSpec(rspec=xml) #rspec= parse_rspec(xml)
 150             return rspec
 151         return None
 152
 153     def getSliverStatus(self, slice=None):
 154         if not slice:
 155             slice = config.getSlice()
 156
 157         filename = config.fullpath(slice+".sliverstatus")
 158
 159         if os.path.exists(filename):
 160             data = open(filename).read()
 161             return pickle.loads(data)
 162
 163         return None
 164
 165     def getSliceMgrVersion(self):
 166         filename = config.fullpath("slicemgr.version")
 167
 168         if os.path.exists(filename):
 169             data = open(filename).read()
 170             return pickle.loads(data)
 171
 172         return None
 173