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 keyPressEvent(self, event):
  35         if (event.key() == Qt.Key_Space):
  36             self.toggleSelection()
  37         else:
  38             QTableView.keyPressEvent(self, event)
  39
  40     def mouseDoubleClickEvent(self, event):
  41         self.toggleSelection()
  42
  43     def toggleSelection(self):
  44         index = self.currentIndex()
  45         model = index.model()
  46         status_index = model.index(index.row(), MEMBERSHIP_STATUS_COLUMN, index.parent())
  47         status_data = status_index.data().toString()
  48         server_status_data = model.index(index.row(), SERVER_MEMBERSHIP_STATUS_COLUMN, index.parent()).data().toString()
  49         node_index = model.index(index.row(), NAME_COLUMN, index.parent())
  50         node_data = node_index.data().toString()
  51
  52         # This is a hostname
  53         if status_data == user_status['in']:
  54             model.setData(status_index, QString(user_status['remove']))
  55         elif status_data == user_status['out']:
  56             model.setData(status_index, QString(user_status['add']))
  57         elif status_data in (user_status['add'], user_status['remove']):
  58             if server_status_data == user_status["in"]:
  59                 model.setData(status_index, QString(user_status['in']))
  60             else:
  61                 model.setData(status_index, QString(user_status['out']))
  62
  63         model.emit(SIGNAL("dataChanged(QModelIndex, QModelIndex)"), node_index, node_index)
  64
  65     def currentChanged(self, current, previous):
  66         model = current.model()
  67         node_index = model.index(current.row(), 0, current.parent())
  68         node_data = node_index.data().toString()
  69         self.emit(SIGNAL('hostnameClicked(QString)'), node_data)
  70
  71     def hideUnusableColumns(self):
  72         self.hideColumn(SERVER_MEMBERSHIP_STATUS_COLUMN)
  73
  74 class UserModel(QStandardItemModel):
  75     def __init__(self, rows=0, columns=4, parent=None):
  76          QStandardItemModel.__init__(self, rows, columns, parent)
  77
  78     def updateModel(self, sliceRec):
  79         self.clear()
  80
  81         added_persons = []
  82         slice_persons = []
  83
  84         if sliceRec:
  85             #for pi in sliceRec.get_field("PI", default=[]):
  86             #    name = str(pi)
  87             #    if not name in added_persons:
  88             #         slice_persons.append({"name": name, "role": "PI", "member": user_status["in"]})
  89             #         added_persons.append(name)
  90
  91             for researcher in sliceRec.get_field("researcher", default=[]):
  92                 name = str(researcher)
  93                 if not name in added_persons:
  94                      slice_persons.append({"name": name, "role": "researcher", "member": user_status["in"]})
  95                      added_persons.append(name)
  96
  97         i=0
  98         while (os.path.exists(config.getAuthorityListFile(i))):
  99             rec = self.readUserRecord(i)
 100             if rec:
 101                 name = str(rec.get_name())
 102                 if not name in added_persons:
 103                     slice_persons.append({"name": name, "role": "", "member": user_status["out"]})
 104                     added_persons.append(name)
 105             i=i+1
 106
 107         rootItem = self.invisibleRootItem()
 108
 109         for person in slice_persons:
 110             rootItem.appendRow([self.readOnlyItem(person["name"]),
 111                                 self.readOnlyItem(person["member"]),
 112                                 self.readOnlyItem(person["member"])])
 113
 114         headers = QStringList() << "User Name" << "Status" << "ServerStatus"
 115         self.setHorizontalHeaderLabels(headers)
 116
 117     def readOnlyItem(self, x):
 118         item = QStandardItem(QString(x))
 119         item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
 120         return item
 121
 122     def updateRecord(self, slicerec):
 123         change = False
 124
 125         item = self.invisibleRootItem()
 126         children = item.rowCount()
 127         for row in range(0, children):
 128             childName = str(item.child(row, NAME_COLUMN).data(Qt.DisplayRole).toString())
 129             childStatus = str(item.child(row, MEMBERSHIP_STATUS_COLUMN).data(Qt.DisplayRole).toString())
 130
 131             if (childStatus == user_status['add']):
 132                 researcher = slicerec.get_field("researcher", [])
 133                 researcher.append(childName)
 134                 slicerec["researcher"] = researcher
 135                 change = True
 136             elif (childStatus == user_status['remove']):
 137                 if childName in slicerec.get_field("PI"):
 138                      slicerec.get_field("PI").remove(childName)
 139                 if childName in slicerec.get_field("researcher"):
 140                      slicerec.get_field("researcher").remove(childName)
 141                 change = True
 142
 143         return change
 144
 145     def getResearchers(self):
 146         researchers = []
 147         item = self.invisibleRootItem()
 148         children = item.rowCount()
 149         for row in range(0, children):
 150             childName = str(item.child(row, NAME_COLUMN).data(Qt.DisplayRole).toString())
 151             childStatus = str(item.child(row, MEMBERSHIP_STATUS_COLUMN).data(Qt.DisplayRole).toString())
 152
 153             if (childStatus == user_status['add']) or (childStatus == user_status['in']):
 154                 researchers.append(childName)
 155
 156         return researchers
 157
 158     def readUserRecord(self, i):
 159         rec_file = config.getAuthorityListFile(i)
 160         if os.path.exists(rec_file):
 161             xml = open(rec_file).read()
 162             rec = UserRecord()
 163             rec.load_from_string(xml)
 164             return rec
 165         return None
 166
 167 class UsersWidget(QWidget):
 168     def __init__(self, parent):
 169         QWidget.__init__(self, parent)
 170
 171         self.process = SfiProcess(self)
 172
 173         self.slicename = QLabel("", self)
 174         self.updateSliceName()
 175         self.slicename.setScaledContents(False)
 176         searchlabel = QLabel ("Search: ", self)
 177         searchlabel.setScaledContents(False)
 178         searchbox = QLineEdit(self)
 179         searchbox.setAttribute(Qt.WA_MacShowFocusRect, 0)
 180
 181         toplayout = QHBoxLayout()
 182         toplayout.addWidget(self.slicename, 0, Qt.AlignLeft)
 183         toplayout.addStretch()
 184         toplayout.addWidget(searchlabel, 0, Qt.AlignRight)
 185         toplayout.addWidget(searchbox, 0, Qt.AlignRight)
 186
 187         self.userView = UserView()
 188
 189         refresh = QPushButton("Refresh", self)
 190         refresh.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
 191         submit = QPushButton("Submit", self)
 192         submit.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
 193
 194         bottomlayout = QHBoxLayout()
 195         bottomlayout.addWidget(refresh, 0, Qt.AlignLeft)
 196         bottomlayout.addStretch()
 197         bottomlayout.addWidget(submit, 0, Qt.AlignRight)
 198
 199         layout = QVBoxLayout()
 200         layout.addLayout(toplayout)
 201         layout.addWidget(self.userView)
 202         layout.addLayout(bottomlayout)
 203         self.setLayout(layout)
 204         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
 205
 206         self.userModel = UserModel(parent=self)
 207
 208         self.connect(refresh, SIGNAL('clicked()'), self.refresh)
 209         self.connect(submit, SIGNAL('clicked()'), self.submit)
 210
 211         self.updateView()
 212
 213     def submitFinished(self):
 214         self.setStatus("<font color='green'>Slice data submitted.</font>")
 215         QTimer.singleShot(1000, self.refresh)
 216
 217     def getSliceRecordFinished(self):
 218         self.setStatus("<font color='green'>Authority data refreshed.</font>", timeout=5000)
 219         self.refreshAuthority()
 220
 221     def getAuthorityRecordFinished(self):
 222         self.setStatus("<font color='green'>Slice data refreshed.</font>", timeout=5000)
 223         self.updateView()
 224         #self.parent().signalAll("usersUpdated")
 225
 226     def readSliceRecord(self):
 227         rec_file = config.getSliceRecordFile()
 228         if os.path.exists(rec_file):
 229             xml = open(rec_file).read()
 230             rec = SliceRecord()
 231             rec.load_from_string(xml)
 232             return rec
 233         return None
 234
 235     def readAuthorityRecord(self):
 236         rec_file = config.getAuthorityRecordFile()
 237         if os.path.exists(rec_file):
 238             xml = open(rec_file).read()
 239             rec = AuthorityRecord()
 240             rec.load_from_string(xml)
 241             return rec
 242         return None
 243
 244     def setStatus(self, msg, timeout=None):
 245         self.parent().setStatus(msg, timeout)
 246
 247     def checkRunningProcess(self):
 248         if self.process.isRunning():
 249             self.setStatus("<font color='red'>There is already a process running. Please wait.</font>")
 250             return True
 251         return False
 252
 253     def submit(self):
 254         if self.checkRunningProcess():
 255             return
 256
 257         rec = self.readSliceRecord()
 258         change = self.userModel.updateRecord(rec)
 259
 260         if not change:
 261             self.setStatus("<font color=red>No change in slice data. Not submitting!</font>", timeout=3000)
 262             return
 263
 264         rec_file = config.getSliceRecordFile()
 265         file(rec_file, "w").write(rec.save_to_string())
 266
 267         self.disconnect(self.process, SIGNAL('finished()'), self.getAuthorityRecordFinished)
 268         self.connect(self.process, SIGNAL('finished()'), self.submitFinished)
 269
 270         self.process.updateRecord(rec_file)
 271         self.setStatus("Sending slice record. This will take some time...")
 272
 273     def refresh(self):
 274         if not config.getSlice():
 275             self.setStatus("<font color='red'>Slice not set yet!</font>")
 276             return
 277
 278         if self.process.isRunning():
 279             self.setStatus("<font color='red'>There is already a process running. Please wait.</font>")
 280             return
 281
 282         self.disconnect(self.process, SIGNAL('finished()'), self.submitFinished)
 283         self.connect(self.process, SIGNAL('finished()'), self.getSliceRecordFinished)
 284
 285         self.process.getSliceRecord()
 286         self.setStatus("Refreshing slice record. This will take some time...")
 287
 288     def refreshAuthority(self):
 289         self.disconnect(self.process, SIGNAL('finished()'), self.getSliceRecordFinished)
 290         self.connect(self.process, SIGNAL('finished()'), self.getAuthorityRecordFinished)
 291
 292         self.process.listRecords(config.getAuthority(), "user", config.getAuthorityListFile())
 293         self.setStatus("Refreshing user records. This will take some time...")
 294
 295     def updateView(self):
 296         sliceRec = self.readSliceRecord()
 297
 298         if not sliceRec:
 299             # wait until we've resolved the slicerecord before displaying
 300             # anything to the user.
 301             self.userModel.clear()
 302         else:
 303             self.userModel.updateModel(sliceRec)
 304
 305         self.userView.setModel(self.userModel)
 306         self.userView.hideColumn(SERVER_MEMBERSHIP_STATUS_COLUMN)
 307         self.userView.resizeColumnToContents(0)
 308
 309     def updateSliceName(self):
 310         self.slicename.setText("Slice : %s" % (config.getSlice() or "None"))
 311
 312
 313
 314
 315 class UserScreen(SfaScreen):
 316     def __init__(self, parent):
 317         SfaScreen.__init__(self, parent)
 318
 319         slice = UsersWidget(self)
 320         self.init(slice, "Users", "OneLab SFA crawler")
 321
 322     def configurationChanged(self):
 323         self.widget.updateSliceName()
 324         self.widget.updateView()
 325
 326