sface/screens/mainscreen.py

   1
   2 from PyQt4.QtCore import *
   3 from PyQt4.QtGui import *
   4
   5 from sface.sfahelper import *
   6 from sface.sficonfig import config
   7 from sface.screens.sfascreen import SfaScreen
   8
   9
  10 class SliceWidget(QWidget):
  11     def __init__(self, parent=None):
  12         QWidget.__init__(self, parent)
  13
  14         self.nodeView = QTreeView(self)
  15         self.nodeView.setRootIsDecorated(False)
  16         self.nodeView.setAlternatingRowColors(True)
  17         self.nodeView.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
  18
  19         self.nodeModel = QStandardItemModel(0, 3, self)
  20         self.nodeModel.setHeaderData(0, Qt.Horizontal, QString("Testbed"))
  21         self.nodeModel.setHeaderData(1, Qt.Horizontal, QString("Hostname"))
  22         self.nodeModel.setHeaderData(2, Qt.Horizontal, QString("IsIn"))
  23
  24         self.nodeView.setModel(self.nodeModel)
  25
  26         label = QLabel("<a href='refresh'>Refresh</a>", self)
  27         label.setScaledContents(False)
  28         self.connect(label, SIGNAL('linkActivated(QString)'), self.refresh)
  29
  30         slicename = QLabel ("Slice : %s"%(config.getSlice() or "None"),self)
  31
  32         layout = QVBoxLayout()
  33         layout.addWidget(label)
  34         layout.addWidget(slicename)
  35         layout.addWidget(self.nodeView)
  36         self.setLayout(layout)
  37         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
  38
  39
  40     def refresh(self, link=None):
  41         data = SfaData()
  42         if not data.getSlice():
  43             print 'slice not set yet'
  44             return
  45         if not data.SFACE_DEBUG:
  46             rspec_string = data.getRSpecFromSM()
  47         else:
  48             print 'SFACE_DEBUG : using local file'
  49             import os
  50             rspec_string = open(os.path.expanduser("~/.sfi/%s.rspec"%data.getSlice())).read()
  51
  52         networks = self.rspec_get_networks(rspec_string)
  53         networks.reverse()
  54
  55         for network in networks:
  56 #            nodes = self.rspec_get_sliver_nodes_from_network(rspec_string, network)
  57 #            for node in nodes: self.addNode(network, node, True)
  58 #            nodes = self.rspec_get_other_nodes_from_network(rspec_string, network)
  59 #            for node in nodes: self.addNode(network, node, False)
  60             # hacky - i'm just gettin used to this xml navigation stuff
  61             xml_nodes = self.rspec_get_xml_nodes_from_network(rspec_string, network)
  62             from lxml import etree
  63             # addNode inserts before, so let's start with the ones that are not in
  64             for xml_node in xml_nodes:
  65                 if not xml_node.xpath('sliver'):
  66                     self.addNode(network,xml_node.xpath('hostname/text()')[0],False)
  67             for xml_node in xml_nodes:
  68                 if xml_node.xpath('sliver'):
  69                     self.addNode(network,xml_node.xpath('hostname/text()')[0],True)
  70
  71
  72     def addNode(self, testbed, hostname, mark):
  73         self.nodeModel.insertRow(0)
  74         self.nodeModel.setData(self.nodeModel.index(0,0), QString(testbed))
  75         self.nodeModel.setData(self.nodeModel.index(0,1), QString(hostname))
  76         if mark:msg="x"
  77         else:   msg="-"
  78         self.nodeModel.setData(self.nodeModel.index(0,2), QString(msg))
  79
  80
  81 class MainScreen(SfaScreen):
  82     def __init__(self, parent=None):
  83         SfaScreen.__init__(self, parent)
  84
  85         slice = SliceWidget(self)
  86         self.init(slice, "Main Window", "PlanetLab Federation GUI")
  87 #        slice.refresh()