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         refresh = QLabel("<a href='refresh'>Refresh</a>", self)
  27         refresh.setScaledContents(False)
  28         slicename = QLabel ("Slice : %s"%(config.getSlice() or "None"),self)
  29         slicename.setScaledContents(False)
  30
  31         hlayout = QHBoxLayout()
  32         hlayout.addWidget(slicename)
  33         hlayout.addStretch()
  34         hlayout.addWidget(refresh)
  35
  36         layout = QVBoxLayout()
  37         layout.addLayout(hlayout)
  38         layout.addWidget(self.nodeView)
  39         self.setLayout(layout)
  40         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
  41
  42         self.connect(refresh, SIGNAL('linkActivated(QString)'), self.refresh)
  43
  44
  45     def refresh(self, link=None):
  46         data = SfaData()
  47         if not data.getSlice():
  48             print 'slice not set yet'
  49             return
  50         if not data.SFACE_DEBUG:
  51             rspec_string = data.getRSpecFromSM()
  52         else:
  53             print 'SFACE_DEBUG : using local file'
  54             import os
  55             rspec_string = open(os.path.expanduser("~/.sfi/%s.rspec"%data.getSlice())).read()
  56
  57         networks = self.rspec_get_networks(rspec_string)
  58         networks.reverse()
  59
  60         for network in networks:
  61 #            nodes = self.rspec_get_sliver_nodes_from_network(rspec_string, network)
  62 #            for node in nodes: self.addNode(network, node, True)
  63 #            nodes = self.rspec_get_other_nodes_from_network(rspec_string, network)
  64 #            for node in nodes: self.addNode(network, node, False)
  65             # hacky - i'm just gettin used to this xml navigation stuff
  66             xml_nodes = self.rspec_get_xml_nodes_from_network(rspec_string, network)
  67             from lxml import etree
  68             # addNode inserts before, so let's start with the ones that are not in
  69             for xml_node in xml_nodes:
  70                 if not xml_node.xpath('sliver'):
  71                     self.addNode(network,xml_node.xpath('hostname/text()')[0],False)
  72             for xml_node in xml_nodes:
  73                 if xml_node.xpath('sliver'):
  74                     self.addNode(network,xml_node.xpath('hostname/text()')[0],True)
  75
  76
  77     def addNode(self, testbed, hostname, mark):
  78         self.nodeModel.insertRow(0)
  79         self.nodeModel.setData(self.nodeModel.index(0,0), QString(testbed))
  80         self.nodeModel.setData(self.nodeModel.index(0,1), QString(hostname))
  81         if mark:msg="x"
  82         else:   msg="-"
  83         self.nodeModel.setData(self.nodeModel.index(0,2), QString(msg))
  84
  85
  86 class MainScreen(SfaScreen):
  87     def __init__(self, parent=None):
  88         SfaScreen.__init__(self, parent)
  89
  90         slice = SliceWidget(self)
  91         self.init(slice, "Main Window", "PlanetLab Federation GUI")
  92 #        slice.refresh()