import weakref
import threading
import string
+import cPickle
+import re
+import os
from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtSql import *
from decimal import *
+from ctypes import *
+from multiprocessing import Process, Array, Value, Event
# Data formatting helpers
def DisplayData(self, item, index):
return item.getData(index.column())
+ def FetchIfNeeded(self, row):
+ if row > self.last_row_read:
+ self.last_row_read = row
+ if row + 10 >= self.root.child_count:
+ self.fetcher.Fetch(glb_chunk_sz)
+
+ def columnAlignment(self, column):
+ return Qt.AlignLeft
+
+ def columnFont(self, column):
+ return None
+
+ def data(self, index, role):
+ if role == Qt.TextAlignmentRole:
+ return self.columnAlignment(index.column())
+ if role == Qt.FontRole:
+ return self.columnFont(index.column())
+ if role != Qt.DisplayRole:
+ return None
+ item = index.internalPointer()
+ return self.DisplayData(item, index)
+
+# Table data model
+
+class TableModel(QAbstractTableModel):
+
+ def __init__(self, parent=None):
+ super(TableModel, self).__init__(parent)
+ self.child_count = 0
+ self.child_items = []
+ self.last_row_read = 0
+
+ def Item(self, parent):
+ if parent.isValid():
+ return parent.internalPointer()
+ else:
+ return self
+
+ def rowCount(self, parent):
+ return self.child_count
+
+ def headerData(self, section, orientation, role):
+ if role == Qt.TextAlignmentRole:
+ return self.columnAlignment(section)
+ if role != Qt.DisplayRole:
+ return None
+ if orientation != Qt.Horizontal:
+ return None
+ return self.columnHeader(section)
+
+ def index(self, row, column, parent):
+ return self.createIndex(row, column, self.child_items[row])
+
+ def DisplayData(self, item, index):
+ return item.getData(index.column())
+
+ def FetchIfNeeded(self, row):
+ if row > self.last_row_read:
+ self.last_row_read = row
+ if row + 10 >= self.child_count:
+ self.fetcher.Fetch(glb_chunk_sz)
+
def columnAlignment(self, column):
return Qt.AlignLeft
if not found:
self.find_bar.NotFound()
+# Child data item finder
+
+class ChildDataItemFinder():
+
+ def __init__(self, root):
+ self.root = root
+ self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (None,) * 5
+ self.rows = []
+ self.pos = 0
+
+ def FindSelect(self):
+ self.rows = []
+ if self.pattern:
+ pattern = re.compile(self.value)
+ for child in self.root.child_items:
+ for column_data in child.data:
+ if re.search(pattern, str(column_data)) is not None:
+ self.rows.append(child.row)
+ break
+ else:
+ for child in self.root.child_items:
+ for column_data in child.data:
+ if self.value in str(column_data):
+ self.rows.append(child.row)
+ break
+
+ def FindValue(self):
+ self.pos = 0
+ if self.last_value != self.value or self.pattern != self.last_pattern:
+ self.FindSelect()
+ if not len(self.rows):
+ return -1
+ return self.rows[self.pos]
+
+ def FindThread(self):
+ if self.direction == 0 or self.value != self.last_value or self.pattern != self.last_pattern:
+ row = self.FindValue()
+ elif len(self.rows):
+ if self.direction > 0:
+ self.pos += 1
+ if self.pos >= len(self.rows):
+ self.pos = 0
+ else:
+ self.pos -= 1
+ if self.pos < 0:
+ self.pos = len(self.rows) - 1
+ row = self.rows[self.pos]
+ else:
+ row = -1
+ return (True, row)
+
+ def Find(self, value, direction, pattern, context, callback):
+ self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (value, direction,pattern, self.value, self.pattern)
+ # Use a thread so the UI is not blocked
+ thread = Thread(self.FindThread)
+ thread.done.connect(lambda row, t=thread, c=callback: self.FindDone(t, c, row), Qt.QueuedConnection)
+ thread.start()
+
+ def FindDone(self, thread, callback, row):
+ callback(row)
+
+# Number of database records to fetch in one go
+
+glb_chunk_sz = 10000
+
+# size of pickled integer big enough for record size
+
+glb_nsz = 8
+
+# Background process for SQL data fetcher
+
+class SQLFetcherProcess():
+
+ def __init__(self, dbref, sql, buffer, head, tail, fetch_count, fetching_done, process_target, wait_event, fetched_event, prep):
+ # Need a unique connection name
+ conn_name = "SQLFetcher" + str(os.getpid())
+ self.db, dbname = dbref.Open(conn_name)
+ self.sql = sql
+ self.buffer = buffer
+ self.head = head
+ self.tail = tail
+ self.fetch_count = fetch_count
+ self.fetching_done = fetching_done
+ self.process_target = process_target
+ self.wait_event = wait_event
+ self.fetched_event = fetched_event
+ self.prep = prep
+ self.query = QSqlQuery(self.db)
+ self.query_limit = 0 if "$$last_id$$" in sql else 2
+ self.last_id = -1
+ self.fetched = 0
+ self.more = True
+ self.local_head = self.head.value
+ self.local_tail = self.tail.value
+
+ def Select(self):
+ if self.query_limit:
+ if self.query_limit == 1:
+ return
+ self.query_limit -= 1
+ stmt = self.sql.replace("$$last_id$$", str(self.last_id))
+ QueryExec(self.query, stmt)
+
+ def Next(self):
+ if not self.query.next():
+ self.Select()
+ if not self.query.next():
+ return None
+ self.last_id = self.query.value(0)
+ return self.prep(self.query)
+
+ def WaitForTarget(self):
+ while True:
+ self.wait_event.clear()
+ target = self.process_target.value
+ if target > self.fetched or target < 0:
+ break
+ self.wait_event.wait()
+ return target
+
+ def HasSpace(self, sz):
+ if self.local_tail <= self.local_head:
+ space = len(self.buffer) - self.local_head
+ if space > sz:
+ return True
+ if space >= glb_nsz:
+ # Use 0 (or space < glb_nsz) to mean there is no more at the top of the buffer
+ nd = cPickle.dumps(0, cPickle.HIGHEST_PROTOCOL)
+ self.buffer[self.local_head : self.local_head + len(nd)] = nd
+ self.local_head = 0
+ if self.local_tail - self.local_head > sz:
+ return True
+ return False
+
+ def WaitForSpace(self, sz):
+ if self.HasSpace(sz):
+ return
+ while True:
+ self.wait_event.clear()
+ self.local_tail = self.tail.value
+ if self.HasSpace(sz):
+ return
+ self.wait_event.wait()
+
+ def AddToBuffer(self, obj):
+ d = cPickle.dumps(obj, cPickle.HIGHEST_PROTOCOL)
+ n = len(d)
+ nd = cPickle.dumps(n, cPickle.HIGHEST_PROTOCOL)
+ sz = n + glb_nsz
+ self.WaitForSpace(sz)
+ pos = self.local_head
+ self.buffer[pos : pos + len(nd)] = nd
+ self.buffer[pos + glb_nsz : pos + sz] = d
+ self.local_head += sz
+
+ def FetchBatch(self, batch_size):
+ fetched = 0
+ while batch_size > fetched:
+ obj = self.Next()
+ if obj is None:
+ self.more = False
+ break
+ self.AddToBuffer(obj)
+ fetched += 1
+ if fetched:
+ self.fetched += fetched
+ with self.fetch_count.get_lock():
+ self.fetch_count.value += fetched
+ self.head.value = self.local_head
+ self.fetched_event.set()
+
+ def Run(self):
+ while self.more:
+ target = self.WaitForTarget()
+ if target < 0:
+ break
+ batch_size = min(glb_chunk_sz, target - self.fetched)
+ self.FetchBatch(batch_size)
+ self.fetching_done.value = True
+ self.fetched_event.set()
+
+def SQLFetcherFn(*x):
+ process = SQLFetcherProcess(*x)
+ process.Run()
+
+# SQL data fetcher
+
+class SQLFetcher(QObject):
+
+ done = Signal(object)
+
+ def __init__(self, glb, sql, prep, process_data, parent=None):
+ super(SQLFetcher, self).__init__(parent)
+ self.process_data = process_data
+ self.more = True
+ self.target = 0
+ self.last_target = 0
+ self.fetched = 0
+ self.buffer_size = 16 * 1024 * 1024
+ self.buffer = Array(c_char, self.buffer_size, lock=False)
+ self.head = Value(c_longlong)
+ self.tail = Value(c_longlong)
+ self.local_tail = 0
+ self.fetch_count = Value(c_longlong)
+ self.fetching_done = Value(c_bool)
+ self.last_count = 0
+ self.process_target = Value(c_longlong)
+ self.wait_event = Event()
+ self.fetched_event = Event()
+ glb.AddInstanceToShutdownOnExit(self)
+ self.process = Process(target=SQLFetcherFn, args=(glb.dbref, sql, self.buffer, self.head, self.tail, self.fetch_count, self.fetching_done, self.process_target, self.wait_event, self.fetched_event, prep))
+ self.process.start()
+ self.thread = Thread(self.Thread)
+ self.thread.done.connect(self.ProcessData, Qt.QueuedConnection)
+ self.thread.start()
+
+ def Shutdown(self):
+ # Tell the thread and process to exit
+ self.process_target.value = -1
+ self.wait_event.set()
+ self.more = False
+ self.fetching_done.value = True
+ self.fetched_event.set()
+
+ def Thread(self):
+ if not self.more:
+ return True, 0
+ while True:
+ self.fetched_event.clear()
+ fetch_count = self.fetch_count.value
+ if fetch_count != self.last_count:
+ break
+ if self.fetching_done.value:
+ self.more = False
+ return True, 0
+ self.fetched_event.wait()
+ count = fetch_count - self.last_count
+ self.last_count = fetch_count
+ self.fetched += count
+ return False, count
+
+ def Fetch(self, nr):
+ if not self.more:
+ # -1 inidcates there are no more
+ return -1
+ result = self.fetched
+ extra = result + nr - self.target
+ if extra > 0:
+ self.target += extra
+ # process_target < 0 indicates shutting down
+ if self.process_target.value >= 0:
+ self.process_target.value = self.target
+ self.wait_event.set()
+ return result
+
+ def RemoveFromBuffer(self):
+ pos = self.local_tail
+ if len(self.buffer) - pos < glb_nsz:
+ pos = 0
+ n = cPickle.loads(self.buffer[pos : pos + glb_nsz])
+ if n == 0:
+ pos = 0
+ n = cPickle.loads(self.buffer[0 : glb_nsz])
+ pos += glb_nsz
+ obj = cPickle.loads(self.buffer[pos : pos + n])
+ self.local_tail = pos + n
+ return obj
+
+ def ProcessData(self, count):
+ for i in xrange(count):
+ obj = self.RemoveFromBuffer()
+ self.process_data(obj)
+ self.tail.value = self.local_tail
+ self.wait_event.set()
+ self.done.emit(count)
+
+# Fetch more records bar
+
+class FetchMoreRecordsBar():
+
+ def __init__(self, model, parent):
+ self.model = model
+
+ self.label = QLabel("Number of records (x " + "{:,}".format(glb_chunk_sz) + ") to fetch:")
+ self.label.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+
+ self.fetch_count = QSpinBox()
+ self.fetch_count.setRange(1, 1000000)
+ self.fetch_count.setValue(10)
+ self.fetch_count.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+
+ self.fetch = QPushButton("Go!")
+ self.fetch.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+ self.fetch.released.connect(self.FetchMoreRecords)
+
+ self.progress = QProgressBar()
+ self.progress.setRange(0, 100)
+ self.progress.hide()
+
+ self.done_label = QLabel("All records fetched")
+ self.done_label.hide()
+
+ self.spacer = QLabel("")
+
+ self.close_button = QToolButton()
+ self.close_button.setIcon(parent.style().standardIcon(QStyle.SP_DockWidgetCloseButton))
+ self.close_button.released.connect(self.Deactivate)
+
+ self.hbox = QHBoxLayout()
+ self.hbox.setContentsMargins(0, 0, 0, 0)
+
+ self.hbox.addWidget(self.label)
+ self.hbox.addWidget(self.fetch_count)
+ self.hbox.addWidget(self.fetch)
+ self.hbox.addWidget(self.spacer)
+ self.hbox.addWidget(self.progress)
+ self.hbox.addWidget(self.done_label)
+ self.hbox.addWidget(self.close_button)
+
+ self.bar = QWidget()
+ self.bar.setLayout(self.hbox);
+ self.bar.show()
+
+ self.in_progress = False
+ self.model.progress.connect(self.Progress)
+
+ self.done = False
+
+ if not model.HasMoreRecords():
+ self.Done()
+
+ def Widget(self):
+ return self.bar
+
+ def Activate(self):
+ self.bar.show()
+ self.fetch.setFocus()
+
+ def Deactivate(self):
+ self.bar.hide()
+
+ def Enable(self, enable):
+ self.fetch.setEnabled(enable)
+ self.fetch_count.setEnabled(enable)
+
+ def Busy(self):
+ self.Enable(False)
+ self.fetch.hide()
+ self.spacer.hide()
+ self.progress.show()
+
+ def Idle(self):
+ self.in_progress = False
+ self.Enable(True)
+ self.progress.hide()
+ self.fetch.show()
+ self.spacer.show()
+
+ def Target(self):
+ return self.fetch_count.value() * glb_chunk_sz
+
+ def Done(self):
+ self.done = True
+ self.Idle()
+ self.label.hide()
+ self.fetch_count.hide()
+ self.fetch.hide()
+ self.spacer.hide()
+ self.done_label.show()
+
+ def Progress(self, count):
+ if self.in_progress:
+ if count:
+ percent = ((count - self.start) * 100) / self.Target()
+ if percent >= 100:
+ self.Idle()
+ else:
+ self.progress.setValue(percent)
+ if not count:
+ # Count value of zero means no more records
+ self.Done()
+
+ def FetchMoreRecords(self):
+ if self.done:
+ return
+ self.progress.setValue(0)
+ self.Busy()
+ self.in_progress = True
+ self.start = self.model.FetchMoreRecords(self.Target())
+
+# SQL data preparation
+
+def SQLTableDataPrep(query, count):
+ data = []
+ for i in xrange(count):
+ data.append(query.value(i))
+ return data
+
+# SQL table data model item
+
+class SQLTableItem():
+
+ def __init__(self, row, data):
+ self.row = row
+ self.data = data
+
+ def getData(self, column):
+ return self.data[column]
+
+# SQL table data model
+
+class SQLTableModel(TableModel):
+
+ progress = Signal(object)
+
+ def __init__(self, glb, sql, column_count, parent=None):
+ super(SQLTableModel, self).__init__(parent)
+ self.glb = glb
+ self.more = True
+ self.populated = 0
+ self.fetcher = SQLFetcher(glb, sql, lambda x, y=column_count: SQLTableDataPrep(x, y), self.AddSample)
+ self.fetcher.done.connect(self.Update)
+ self.fetcher.Fetch(glb_chunk_sz)
+
+ def DisplayData(self, item, index):
+ self.FetchIfNeeded(item.row)
+ return item.getData(index.column())
+
+ def AddSample(self, data):
+ child = SQLTableItem(self.populated, data)
+ self.child_items.append(child)
+ self.populated += 1
+
+ def Update(self, fetched):
+ if not fetched:
+ self.more = False
+ self.progress.emit(0)
+ child_count = self.child_count
+ count = self.populated - child_count
+ if count > 0:
+ parent = QModelIndex()
+ self.beginInsertRows(parent, child_count, child_count + count - 1)
+ self.insertRows(child_count, count, parent)
+ self.child_count += count
+ self.endInsertRows()
+ self.progress.emit(self.child_count)
+
+ def FetchMoreRecords(self, count):
+ current = self.child_count
+ if self.more:
+ self.fetcher.Fetch(count)
+ else:
+ self.progress.emit(0)
+ return current
+
+ def HasMoreRecords(self):
+ return self.more
+
+# SQL automatic table data model
+
+class SQLAutoTableModel(SQLTableModel):
+
+ def __init__(self, glb, table_name, parent=None):
+ sql = "SELECT * FROM " + table_name + " WHERE id > $$last_id$$ ORDER BY id LIMIT " + str(glb_chunk_sz)
+ if table_name == "comm_threads_view":
+ # For now, comm_threads_view has no id column
+ sql = "SELECT * FROM " + table_name + " WHERE comm_id > $$last_id$$ ORDER BY comm_id LIMIT " + str(glb_chunk_sz)
+ self.column_headers = []
+ query = QSqlQuery(glb.db)
+ if glb.dbref.is_sqlite3:
+ QueryExec(query, "PRAGMA table_info(" + table_name + ")")
+ while query.next():
+ self.column_headers.append(query.value(1))
+ if table_name == "sqlite_master":
+ sql = "SELECT * FROM " + table_name
+ else:
+ if table_name[:19] == "information_schema.":
+ sql = "SELECT * FROM " + table_name
+ select_table_name = table_name[19:]
+ schema = "information_schema"
+ else:
+ select_table_name = table_name
+ schema = "public"
+ QueryExec(query, "SELECT column_name FROM information_schema.columns WHERE table_schema = '" + schema + "' and table_name = '" + select_table_name + "'")
+ while query.next():
+ self.column_headers.append(query.value(0))
+ super(SQLAutoTableModel, self).__init__(glb, sql, len(self.column_headers), parent)
+
+ def columnCount(self, parent=None):
+ return len(self.column_headers)
+
+ def columnHeader(self, column):
+ return self.column_headers[column]
+
+# Base class for custom ResizeColumnsToContents
+
+class ResizeColumnsToContentsBase(QObject):
+
+ def __init__(self, parent=None):
+ super(ResizeColumnsToContentsBase, self).__init__(parent)
+
+ def ResizeColumnToContents(self, column, n):
+ # Using the view's resizeColumnToContents() here is extrememly slow
+ # so implement a crude alternative
+ font = self.view.font()
+ metrics = QFontMetrics(font)
+ max = 0
+ for row in xrange(n):
+ val = self.data_model.child_items[row].data[column]
+ len = metrics.width(str(val) + "MM")
+ max = len if len > max else max
+ val = self.data_model.columnHeader(column)
+ len = metrics.width(str(val) + "MM")
+ max = len if len > max else max
+ self.view.setColumnWidth(column, max)
+
+ def ResizeColumnsToContents(self):
+ n = min(self.data_model.child_count, 100)
+ if n < 1:
+ # No data yet, so connect a signal to notify when there is
+ self.data_model.rowsInserted.connect(self.UpdateColumnWidths)
+ return
+ columns = self.data_model.columnCount()
+ for i in xrange(columns):
+ self.ResizeColumnToContents(i, n)
+
+ def UpdateColumnWidths(self, *x):
+ # This only needs to be done once, so disconnect the signal now
+ self.data_model.rowsInserted.disconnect(self.UpdateColumnWidths)
+ self.ResizeColumnsToContents()
+
+# Table window
+
+class TableWindow(QMdiSubWindow, ResizeColumnsToContentsBase):
+
+ def __init__(self, glb, table_name, parent=None):
+ super(TableWindow, self).__init__(parent)
+
+ self.data_model = LookupCreateModel(table_name + " Table", lambda: SQLAutoTableModel(glb, table_name))
+
+ self.model = QSortFilterProxyModel()
+ self.model.setSourceModel(self.data_model)
+
+ self.view = QTableView()
+ self.view.setModel(self.model)
+ self.view.setEditTriggers(QAbstractItemView.NoEditTriggers)
+ self.view.verticalHeader().setVisible(False)
+ self.view.sortByColumn(-1, Qt.AscendingOrder)
+ self.view.setSortingEnabled(True)
+
+ self.ResizeColumnsToContents()
+
+ self.find_bar = FindBar(self, self, True)
+
+ self.finder = ChildDataItemFinder(self.data_model)
+
+ self.fetch_bar = FetchMoreRecordsBar(self.data_model, self)
+
+ self.vbox = VBox(self.view, self.find_bar.Widget(), self.fetch_bar.Widget())
+
+ self.setWidget(self.vbox.Widget())
+
+ AddSubWindow(glb.mainwindow.mdi_area, self, table_name + " Table")
+
+ def Find(self, value, direction, pattern, context):
+ self.view.setFocus()
+ self.find_bar.Busy()
+ self.finder.Find(value, direction, pattern, context, self.FindDone)
+
+ def FindDone(self, row):
+ self.find_bar.Idle()
+ if row >= 0:
+ self.view.setCurrentIndex(self.model.index(row, 0, QModelIndex()))
+ else:
+ self.find_bar.NotFound()
+
+# Table list
+
+def GetTableList(glb):
+ tables = []
+ query = QSqlQuery(glb.db)
+ if glb.dbref.is_sqlite3:
+ QueryExec(query, "SELECT name FROM sqlite_master WHERE type IN ( 'table' , 'view' ) ORDER BY name")
+ else:
+ QueryExec(query, "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_type IN ( 'BASE TABLE' , 'VIEW' ) ORDER BY table_name")
+ while query.next():
+ tables.append(query.value(0))
+ if glb.dbref.is_sqlite3:
+ tables.append("sqlite_master")
+ else:
+ tables.append("information_schema.tables")
+ tables.append("information_schema.views")
+ tables.append("information_schema.columns")
+ return tables
+
# Action Definition
def CreateAction(label, tip, callback, parent=None, shortcut=None):
edit_menu = menu.addMenu("&Edit")
edit_menu.addAction(CreateAction("&Find...", "Find items", self.Find, self, QKeySequence.Find))
+ edit_menu.addAction(CreateAction("Fetch &more records...", "Fetch more records", self.FetchMoreRecords, self, [QKeySequence(Qt.Key_F8)]))
edit_menu.addAction(CreateAction("&Shrink Font", "Make text smaller", self.ShrinkFont, self, [QKeySequence("Ctrl+-")]))
edit_menu.addAction(CreateAction("&Enlarge Font", "Make text bigger", self.EnlargeFont, self, [QKeySequence("Ctrl++")]))
reports_menu = menu.addMenu("&Reports")
reports_menu.addAction(CreateAction("Context-Sensitive Call &Graph", "Create a new window containing a context-sensitive call graph", self.NewCallGraph, self))
+ self.TableMenu(GetTableList(glb), menu)
+
self.window_menu = WindowMenu(self.mdi_area, menu)
def Find(self):
except:
pass
+ def FetchMoreRecords(self):
+ win = self.mdi_area.activeSubWindow()
+ if win:
+ try:
+ win.fetch_bar.Activate()
+ except:
+ pass
+
def ShrinkFont(self):
win = self.mdi_area.activeSubWindow()
ShrinkFont(win.view)
win = self.mdi_area.activeSubWindow()
EnlargeFont(win.view)
+ def TableMenu(self, tables, menu):
+ table_menu = menu.addMenu("&Tables")
+ for table in tables:
+ table_menu.addAction(CreateAction(table, "Create a new window containing a table view", lambda t=table: self.NewTableView(t), self))
+
def NewCallGraph(self):
CallGraphWindow(self.glb, self)
+ def NewTableView(self, table_name):
+ TableWindow(self.glb, table_name, self)
+
# Global data
class Glb():
self.dbname = dbname
self.app = None
self.mainwindow = None
+ self.instances_to_shutdown_on_exit = weakref.WeakSet()
+
+ def AddInstanceToShutdownOnExit(self, instance):
+ self.instances_to_shutdown_on_exit.add(instance)
+
+ # Shutdown any background processes or threads
+ def ShutdownInstances(self):
+ for x in self.instances_to_shutdown_on_exit:
+ try:
+ x.Shutdown()
+ except:
+ pass
# Database reference
glb.mainwindow = mainwindow
mainwindow.show()
err = app.exec_()
+ glb.ShutdownInstances()
db.close()
sys.exit(err)
projects / openwrt / staging / blogic.git / commitdiff