sface/sfidata.py

   1 import os
   2 from PyQt4.QtCore import *
   3 from PyQt4.QtGui import *
   4
   5 from lxml import etree
   6 from sfa.util.record import SfaRecord, SliceRecord, AuthorityRecord
   7 from sfa.rspecs.rspec_parser import parse_rspec
   8 from sface.config import config
   9 from distutils.version import LooseVersion
  10 from sfa.util.version import version_core
  11
  12 class SfiData:
  13     def __init__(self):
  14         pass
  15
  16     def getAuthorityHrns_old(self, type=None):
  17         # DEPRECATED
  18         names = []
  19         i=0
  20         while os.path.exists(config.getAuthorityListRecordFile(i)):
  21             rec_file = config.getAuthorityListRecordFile(i)
  22             xml = open(rec_file).read()
  23             rec = SfaRecord(string = xml)
  24             if (type==None) or (type==rec.get_type()):
  25                 names.append(rec.get_name())
  26             i=i+1
  27
  28         return names
  29
  30     def getAuthorityHrns(self, type=None):
  31         if LooseVersion(version_core()['code_tag']) <= LooseVersion("1.0-35"):
  32             return self.getAuthorityHrns_old(type)
  33
  34         names = []
  35         if os.path.exists(config.getAuthorityListFile()):
  36             xml = open(config.getAuthorityListFile()).read()
  37             tree = etree.fromstring(xml)
  38             records = tree.xpath("//recordlist/record")
  39
  40             for record in records:
  41                 recType = record.attrib.get("type", None)
  42                 recHrn = record.attrib.get("hrn", None)
  43                 if (type==None) or (type==recType):
  44                     names.append(recHrn)
  45
  46         return names
  47
  48     def getSliceRecord(self):
  49         rec_file = config.getSliceRecordFile()
  50         if os.path.exists(rec_file):
  51             xml = open(rec_file).read()
  52             rec = SliceRecord()
  53             rec.load_from_string(xml)
  54             return rec
  55         return None
  56
  57     def purgeNonSliceResources(self, rspec):
  58         networks = rspec.get_networks()
  59         for network in networks:
  60             all_nodes = rspec.get_nodes(network)
  61             sliver_nodes = rspec.get_nodes_with_slivers(network)
  62             available_nodes = [ node for node in all_nodes if node not in sliver_nodes ]
  63
  64             for node in available_nodes:
  65                 node_elem = rspec.get_node_element(node, network)
  66                 parent = node_elem.xpath("..")[0]
  67                 parent.remove(node_elem)
  68
  69     def getSliceRSpec(self):
  70         rspec_file = config.getSliceRSpecFile()
  71         if os.path.exists(rspec_file):
  72             xml = open(rspec_file).read()
  73             rspec = parse_rspec(xml)
  74
  75             self.purgeNonSliceResources(rspec)
  76
  77             return rspec
  78         return None
  79
  80     def getResourcesRSpec(self):
  81         rspec_file = config.getResourcesRSpecFile()
  82         if os.path.exists(rspec_file):
  83             xml = open(rspec_file).read()
  84             return parse_rspec(xml)
  85         return None