2 from PyQt4.QtCore import Qt, QString, SIGNAL
3 from PyQt4.QtGui import QWidget, QLabel, QTreeView, QStandardItemModel, QVBoxLayout, QSizePolicy
5 from sfa.util.rspecHelper import RSpec
7 from sfadata import SfaData
8 from sfascreen import SfaScreen
11 class SliceWidget(QWidget):
12 def __init__(self, parent=None):
13 QWidget.__init__(self, parent)
15 self.nodeView = QTreeView(self)
16 self.nodeView.setRootIsDecorated(False)
17 self.nodeView.setAlternatingRowColors(True)
18 self.nodeView.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
20 self.nodeModel = QStandardItemModel(0, 3, self)
21 self.nodeModel.setHeaderData(0, Qt.Horizontal, QString("Testbed"))
22 self.nodeModel.setHeaderData(1, Qt.Horizontal, QString("Hostname"))
23 self.nodeModel.setHeaderData(2, Qt.Horizontal, QString("IsIn"))
25 self.nodeView.setModel(self.nodeModel)
27 label = QLabel("<a href='refresh'>Refresh</a>", self)
28 label.setScaledContents(False)
29 self.connect(label, SIGNAL('linkActivated(QString)'), self.refresh)
33 slicename = QLabel ("Slice : %s"%(data.getSlice() or "None"),self)
35 layout = QVBoxLayout()
36 layout.addWidget(label)
37 layout.addWidget(slicename)
38 layout.addWidget(self.nodeView)
39 self.setLayout(layout)
40 self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
44 # TODO: use the methods from sfa-trunk
45 def rspec_get_networks(self, rspec_string):
46 rspec = RSpec (rspec_string)
47 return rspec.rspec.xpath("./network[@name]/@name")
48 def rspec_get_xml_nodes_from_network(self, rspec_string, network):
49 rspec = RSpec (rspec_string)
50 return rspec.rspec.xpath("./network[@name='%s']/site/node" % network)
51 def rspec_get_sliver_nodes_from_network(self, rspec_string, network):
52 rspec = RSpec (rspec_string)
53 return rspec.rspec.xpath("./network[@name='%s']/site/node[sliver]/hostname/text()" % network)
54 def rspec_get_other_nodes_from_network(self, rspec_string, network):
55 rspec = RSpec (rspec_string)
56 # xxx todo - could not find the xpath syntax for 'does not have the sliver attribute'
57 return rspec.rspec.xpath("./network[@name='%s']/site/node[~sliver]/hostname/text()" % network)
59 def refresh(self, link=None):
61 if not data.getSlice():
62 print 'slice not set yet'
64 if not data.SFACE_DEBUG:
65 rspec_string = data.getRSpecFromSM()
67 print 'SFACE_DEBUG : using local file'
69 rspec_string = open(os.path.expanduser("~/.sfi/%s.rspec"%data.getSlice())).read()
71 networks = self.rspec_get_networks(rspec_string)
74 for network in networks:
75 # nodes = self.rspec_get_sliver_nodes_from_network(rspec_string, network)
76 # for node in nodes: self.addNode(network, node, True)
77 # nodes = self.rspec_get_other_nodes_from_network(rspec_string, network)
78 # for node in nodes: self.addNode(network, node, False)
79 # hacky - i'm just gettin used to this xml navigation stuff
80 xml_nodes = self.rspec_get_xml_nodes_from_network(rspec_string, network)
81 from lxml import etree
82 # addNode inserts before, so let's start with the ones that are not in
83 for xml_node in xml_nodes:
84 if not xml_node.xpath('sliver'):
85 self.addNode(network,xml_node.xpath('hostname/text()')[0],False)
86 for xml_node in xml_nodes:
87 if xml_node.xpath('sliver'):
88 self.addNode(network,xml_node.xpath('hostname/text()')[0],True)
91 def addNode(self, testbed, hostname, mark):
92 self.nodeModel.insertRow(0)
93 self.nodeModel.setData(self.nodeModel.index(0,0), QString(testbed))
94 self.nodeModel.setData(self.nodeModel.index(0,1), QString(hostname))
97 self.nodeModel.setData(self.nodeModel.index(0,2), QString(msg))
101 class SfaMainScreen(SfaScreen):
102 def __init__(self, parent=None):
103 SfaScreen.__init__(self, parent)
105 slice = SliceWidget(self)
106 self.init(slice, "Main Window", "PlanetLab Federation GUI")