sface/screens/userscreen.py

   1
   2 import datetime
   3 import os
   4 import pickle
   5 from PyQt4.QtCore import *
   6 from PyQt4.QtGui import *
   7
   8 from sfa.util.record import SfaRecord, SliceRecord, AuthorityRecord, UserRecord
   9 from sface.config import config
  10 from sface.sfiprocess import SfiProcess
  11 from sface.screens.sfascreen import SfaScreen
  12
  13 NAME_COLUMN = 0
  14 #ROLE_COLUMN = 1
  15 MEMBERSHIP_STATUS_COLUMN = 1
  16 SERVER_MEMBERSHIP_STATUS_COLUMN = 2
  17
  18 user_status = { "in": "Already Selected",
  19                 "out": "Not Selected",
  20                 "add": "To be Added",
  21                 "remove": "To be Removed"}
  22
  23 class UserView(QTableView):
  24     def __init__(self, parent=None):
  25         QTableView.__init__(self, parent)
  26
  27         self.setSelectionBehavior(QAbstractItemView.SelectRows)
  28         self.setSelectionMode(QAbstractItemView.SingleSelection)
  29         self.setAlternatingRowColors(True)
  30         self.setAttribute(Qt.WA_MacShowFocusRect, 0)
  31         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
  32         self.setToolTip("Double click on a row to change its status.")
  33
  34     def mouseDoubleClickEvent(self, event):
  35         index = self.currentIndex()
  36         model = index.model()
  37         status_index = model.index(index.row(), MEMBERSHIP_STATUS_COLUMN, index.parent())
  38         status_data = status_index.data().toString()
  39         server_status_data = model.index(index.row(), SERVER_MEMBERSHIP_STATUS_COLUMN, index.parent()).data().toString()
  40         node_index = model.index(index.row(), NAME_COLUMN, index.parent())
  41         node_data = node_index.data().toString()
  42
  43         # This is a hostname
  44         if status_data == user_status['in']:
  45             model.setData(status_index, QString(user_status['remove']))
  46         elif status_data == user_status['out']:
  47             model.setData(status_index, QString(user_status['add']))
  48         elif status_data in (user_status['add'], user_status['remove']):
  49             if server_status_data == user_status["in"]:
  50                 model.setData(status_index, QString(user_status['in']))
  51             else:
  52                 model.setData(status_index, QString(user_status['out']))
  53
  54         model.emit(SIGNAL("dataChanged(QModelIndex, QModelIndex)"), node_index, node_index)
  55
  56     def currentChanged(self, current, previous):
  57         model = current.model()
  58         node_index = model.index(current.row(), 0, current.parent())
  59         node_data = node_index.data().toString()
  60         self.emit(SIGNAL('hostnameClicked(QString)'), node_data)
  61
  62     def hideUnusableColumns(self):
  63         self.hideColumn(SERVER_MEMBERSHIP_STATUS_COLUMN)
  64
  65 class UserModel(QStandardItemModel):
  66     def __init__(self, rows=0, columns=4, parent=None):
  67          QStandardItemModel.__init__(self, rows, columns, parent)
  68
  69     def updateModel(self, sliceRec):
  70         self.clear()
  71
  72         added_persons = []
  73         slice_persons = []
  74
  75         if sliceRec:
  76             #for pi in sliceRec.get_field("PI", default=[]):
  77             #    name = str(pi)
  78             #    if not name in added_persons:
  79             #         slice_persons.append({"name": name, "role": "PI", "member": user_status["in"]})
  80             #         added_persons.append(name)
  81
  82             for researcher in sliceRec.get_field("researcher", default=[]):
  83                 name = str(researcher)
  84                 if not name in added_persons:
  85                      slice_persons.append({"name": name, "role": "researcher", "member": user_status["in"]})
  86                      added_persons.append(name)
  87
  88         i=1
  89         while (os.path.exists(config.getAuthorityListFile(i))):
  90             rec = self.readUserRecord(i)
  91             if rec:
  92                 name = str(rec.get_name())
  93                 if not name in added_persons:
  94                     slice_persons.append({"name": name, "role": "", "member": user_status["out"]})
  95                     added_persons.append(name)
  96             i=i+1
  97
  98         rootItem = self.invisibleRootItem()
  99
 100         for person in slice_persons:
 101             rootItem.appendRow([QStandardItem(QString(person["name"])),
 102                                #QStandardItem(QString(person["role"])),
 103                                QStandardItem(QString(person["member"])),
 104                                QStandardItem(QString(person["member"]))])
 105
 106         headers = QStringList() << "User Name" << "Status" << "ServerStatus"
 107         self.setHorizontalHeaderLabels(headers)
 108
 109     def updateRecord(self, slicerec):
 110         change = False
 111
 112         item = self.invisibleRootItem()
 113         children = item.rowCount()
 114         for row in range(0, children):
 115             childName = str(item.child(row, NAME_COLUMN).data(Qt.DisplayRole).toString())
 116             childStatus = str(item.child(row, MEMBERSHIP_STATUS_COLUMN).data(Qt.DisplayRole).toString())
 117
 118             if (childStatus == user_status['add']):
 119                 researcher = slicerec.get_field("researcher", [])
 120                 researcher.append(childName)
 121                 slicerec["researcher"] = researcher
 122                 change = True
 123             elif (childStatus == user_status['remove']):
 124                 if childName in slicerec.get_field("PI"):
 125                      slicerec.get_field("PI").remove(childName)
 126                 if childName in slicerec.get_field("researcher"):
 127                      slicerec.get_field("researcher").remove(childName)
 128                 change = True
 129
 130         return change
 131
 132     def getResearchers(self):
 133         researchers = []
 134         item = self.invisibleRootItem()
 135         children = item.rowCount()
 136         for row in range(0, children):
 137             childName = str(item.child(row, NAME_COLUMN).data(Qt.DisplayRole).toString())
 138             childStatus = str(item.child(row, MEMBERSHIP_STATUS_COLUMN).data(Qt.DisplayRole).toString())
 139
 140             if (childStatus == user_status['add']) or (childStatus == user_status['in']):
 141                 researchers.append(childName)
 142
 143         return researchers
 144
 145     def readUserRecord(self, i):
 146         rec_file = config.getAuthorityListFile(i)
 147         if os.path.exists(rec_file):
 148             xml = open(rec_file).read()
 149             rec = UserRecord()
 150             rec.load_from_string(xml)
 151             return rec
 152         return None
 153
 154 class UsersWidget(QWidget):
 155     def __init__(self, parent):
 156         QWidget.__init__(self, parent)
 157
 158         self.process = SfiProcess(self)
 159
 160         self.slicename = QLabel("", self)
 161         self.updateSliceName()
 162         self.slicename.setScaledContents(False)
 163         searchlabel = QLabel ("Search: ", self)
 164         searchlabel.setScaledContents(False)
 165         searchbox = QLineEdit(self)
 166         searchbox.setAttribute(Qt.WA_MacShowFocusRect, 0)
 167
 168         toplayout = QHBoxLayout()
 169         toplayout.addWidget(self.slicename, 0, Qt.AlignLeft)
 170         toplayout.addStretch()
 171         toplayout.addWidget(searchlabel, 0, Qt.AlignRight)
 172         toplayout.addWidget(searchbox, 0, Qt.AlignRight)
 173
 174         self.userView = UserView()
 175
 176         refresh = QPushButton("Refresh", self)
 177         refresh.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
 178         submit = QPushButton("Submit", self)
 179         submit.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
 180
 181         bottomlayout = QHBoxLayout()
 182         bottomlayout.addWidget(refresh, 0, Qt.AlignLeft)
 183         bottomlayout.addStretch()
 184         bottomlayout.addWidget(submit, 0, Qt.AlignRight)
 185
 186         layout = QVBoxLayout()
 187         layout.addLayout(toplayout)
 188         layout.addWidget(self.userView)
 189         layout.addLayout(bottomlayout)
 190         self.setLayout(layout)
 191         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
 192
 193         self.userModel = UserModel(parent=self)
 194
 195         self.connect(refresh, SIGNAL('clicked()'), self.refresh)
 196         self.connect(submit, SIGNAL('clicked()'), self.submit)
 197
 198         self.updateView()
 199
 200     def submitFinished(self):
 201         self.setStatus("<font color='green'>Slice data submitted.</font>")
 202         QTimer.singleShot(1000, self.refresh)
 203
 204     def getSliceRecordFinished(self):
 205         self.setStatus("<font color='green'>Authority data refreshed.</font>", timeout=5000)
 206         self.refreshAuthority()
 207
 208     def getAuthorityRecordFinished(self):
 209         self.setStatus("<font color='green'>Slice data refreshed.</font>", timeout=5000)
 210         self.updateView()
 211         #self.parent().signalAll("usersUpdated")
 212
 213     def readSliceRecord(self):
 214         rec_file = config.getSliceRecordFile()
 215         if os.path.exists(rec_file):
 216             xml = open(rec_file).read()
 217             rec = SliceRecord()
 218             rec.load_from_string(xml)
 219             return rec
 220         return None
 221
 222     def readAuthorityRecord(self):
 223         rec_file = config.getAuthorityRecordFile()
 224         if os.path.exists(rec_file):
 225             xml = open(rec_file).read()
 226             rec = AuthorityRecord()
 227             rec.load_from_string(xml)
 228             return rec
 229         return None
 230
 231     def setStatus(self, msg, timeout=None):
 232         self.parent().setStatus(msg, timeout)
 233
 234     def checkRunningProcess(self):
 235         if self.process.isRunning():
 236             self.setStatus("<font color='red'>There is already a process running. Please wait.</font>")
 237             return True
 238         return False
 239
 240     def submit(self):
 241         if self.checkRunningProcess():
 242             return
 243
 244         rec = self.readSliceRecord()
 245         change = self.userModel.updateRecord(rec)
 246
 247         if not change:
 248             self.setStatus("<font color=red>No change in slice data. Not submitting!</font>", timeout=3000)
 249             return
 250
 251         rec_file = config.getSliceRecordFile()
 252         file(rec_file, "w").write(rec.save_to_string())
 253
 254         self.disconnect(self.process, SIGNAL('finished()'), self.getAuthorityRecordFinished)
 255         self.connect(self.process, SIGNAL('finished()'), self.submitFinished)
 256
 257         self.process.updateRecord(rec_file)
 258         self.setStatus("Sending slice record. This will take some time...")
 259
 260     def refresh(self):
 261         if not config.getSlice():
 262             self.setStatus("<font color='red'>Slice not set yet!</font>")
 263             return
 264
 265         if self.process.isRunning():
 266             self.setStatus("<font color='red'>There is already a process running. Please wait.</font>")
 267             return
 268
 269         self.disconnect(self.process, SIGNAL('finished()'), self.submitFinished)
 270         self.connect(self.process, SIGNAL('finished()'), self.getSliceRecordFinished)
 271
 272         self.process.getSliceRecord()
 273         self.setStatus("Refreshing slice record. This will take some time...")
 274
 275     def refreshAuthority(self):
 276         self.disconnect(self.process, SIGNAL('finished()'), self.getSliceRecordFinished)
 277         self.connect(self.process, SIGNAL('finished()'), self.getAuthorityRecordFinished)
 278
 279         self.process.listRecords(config.getAuthority(), "user", config.getAuthorityListFile())
 280         self.setStatus("Refreshing user records. This will take some time...")
 281
 282     def updateView(self):
 283         sliceRec = self.readSliceRecord()
 284
 285         if not sliceRec:
 286             # wait until we've resolved the slicerecord before displaying
 287             # anything to the user.
 288             self.userModel.clear()
 289         else:
 290             self.userModel.updateModel(sliceRec)
 291
 292         self.userView.setModel(self.userModel)
 293         self.userView.hideColumn(SERVER_MEMBERSHIP_STATUS_COLUMN)
 294         self.userView.resizeColumnToContents(0)
 295
 296     def updateSliceName(self):
 297         self.slicename.setText("Slice : %s" % (config.getSlice() or "None"))
 298
 299
 300
 301
 302 class UserScreen(SfaScreen):
 303     def __init__(self, parent):
 304         SfaScreen.__init__(self, parent)
 305
 306         slice = UsersWidget(self)
 307         self.init(slice, "Users", "OneLab SFA crawler")
 308
 309     def configurationChanged(self):
 310         self.widget.updateSliceName()
 311         self.widget.updateView()
 312
 313