Download/upload shutdown fixes

- Missing renamed to PendingDownload
- PendingDownload now only retries 3 times rather than 6 to dowload an
  object
- Added PendingUpload, replacing invQueueSize
- PendingUpload has both the "len" method (number of objects not
  uploaded) as well as "progress" method, which is a float from 0
  (nothing done) to 1 (all uploaded) which considers not only objects
  but also how many nodes they are uploaded to
- PendingUpload tracks when the object is successfully uploaded to the
  remote node instead of just adding an arbitrary time after they have
  been send the corresponding "inv"
- Network status tab's "Objects to be synced" shows the sum of
  PendingUpload and PendingDownload sizes

src/bitmessageqt/__init__.py

@@ -76,8 +76,8 @@ from account import *
 from dialogs import AddAddressDialog
 from class_objectHashHolder import objectHashHolder
 from class_singleWorker import singleWorker
-from helper_generic import powQueueSize, invQueueSize
-from inventory import Missing
+from helper_generic import powQueueSize
+from inventory import PendingDownload, PendingUpload, PendingUploadDeadlineException
 import paths
 from proofofwork import getPowType
 import protocol
@@ -2708,10 +2708,10 @@ class MyForm(settingsmixin.SMainWindow):
         waitForSync = False
 
         # C PoW currently doesn't support interrupting and OpenCL is untested
-        if getPowType() == "python" and (powQueueSize() > 0 or invQueueSize() > 0):
+        if getPowType() == "python" and (powQueueSize() > 0 or PendingUpload().len() > 0):
             reply = QtGui.QMessageBox.question(self, _translate("MainWindow", "Proof of work pending"),
                     _translate("MainWindow", "%n object(s) pending proof of work", None, QtCore.QCoreApplication.CodecForTr, powQueueSize()) + ", " +
-                    _translate("MainWindow", "%n object(s) waiting to be distributed", None, QtCore.QCoreApplication.CodecForTr, invQueueSize()) + "\n\n" + 
+                    _translate("MainWindow", "%n object(s) waiting to be distributed", None, QtCore.QCoreApplication.CodecForTr, PendingUpload().len()) + "\n\n" + 
                     _translate("MainWindow", "Wait until these tasks finish?"),
                     QtGui.QMessageBox.Yes|QtGui.QMessageBox.No|QtGui.QMessageBox.Cancel, QtGui.QMessageBox.Cancel)
             if reply == QtGui.QMessageBox.No:
@@ -2719,16 +2719,16 @@ class MyForm(settingsmixin.SMainWindow):
             elif reply == QtGui.QMessage.Cancel:
                 return
 
-        if Missing().len() > 0:
+        if PendingDownload().len() > 0:
             reply = QtGui.QMessageBox.question(self, _translate("MainWindow", "Synchronisation pending"),
-                    _translate("MainWindow", "Bitmessage hasn't synchronised with the network, %n object(s) to be downloaded. If you quit now, it may cause delivery delays. Wait until the synchronisation finishes?", None, QtCore.QCoreApplication.CodecForTr, Missing().len()),
+                    _translate("MainWindow", "Bitmessage hasn't synchronised with the network, %n object(s) to be downloaded. If you quit now, it may cause delivery delays. Wait until the synchronisation finishes?", None, QtCore.QCoreApplication.CodecForTr, PendingDownload().len()),
                     QtGui.QMessageBox.Yes|QtGui.QMessageBox.No|QtGui.QMessageBox.Cancel, QtGui.QMessageBox.Cancel)
             if reply == QtGui.QMessageBox.Yes:
                 waitForSync = True
             elif reply == QtGui.QMessageBox.Cancel:
                 return
             else:
-                Missing().stop()
+                PendingDownload().stop()
 
         if shared.statusIconColor == 'red':
             reply = QtGui.QMessageBox.question(self, _translate("MainWindow", "Not connected"),
@@ -2756,7 +2756,7 @@ class MyForm(settingsmixin.SMainWindow):
         if waitForSync:
             self.statusBar().showMessage(_translate(
                 "MainWindow", "Waiting for finishing synchronisation..."))
-            while Missing().len() > 0:
+            while PendingDownload().len() > 0:
                 time.sleep(0.5)
                 QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents, 1000)
 
@@ -2781,22 +2781,17 @@ class MyForm(settingsmixin.SMainWindow):
                 time.sleep(0.5) # a bit of time so that the hashHolder is populated
             QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents, 1000)
         
-            # check if objectHashHolder empty
+            # check if upload (of objects created locally) pending
             self.statusBar().showMessage(_translate("MainWindow", "Waiting for objects to be sent... %1%").arg(str(50)))
-            maxWaitingObjects = 0
-            curWaitingObjects = invQueueSize()
-            while curWaitingObjects > 0:
-                curWaitingObjects = invQueueSize()
-                if curWaitingObjects > maxWaitingObjects:
-                    maxWaitingObjects = curWaitingObjects
-                if curWaitingObjects > 0:
-                    self.statusBar().showMessage(_translate("MainWindow", "Waiting for objects to be sent... %1%").arg(str(50 + 20 * (maxWaitingObjects - curWaitingObjects) / maxWaitingObjects)))
+            try:
+                while PendingUpload().progress() < 1:
+                    self.statusBar().showMessage(_translate("MainWindow", "Waiting for objects to be sent... %1%").arg(str(int(50 + 20 * PendingUpload().progress()))))
                     time.sleep(0.5)
                     QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents, 1000)
+            except PendingUploadDeadlineException:
+                pass
 
             QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents, 1000)
-            if maxWorkerQueue > 0 or maxWaitingObjects > 0:
-                time.sleep(10) # a bit of time so that the other nodes retrieve the objects
         QtCore.QCoreApplication.processEvents(QtCore.QEventLoop.AllEvents, 1000)
 
         # save state and geometry self and all widgets

src/bitmessageqt/networkstatus.py

@@ -2,7 +2,7 @@ from PyQt4 import QtCore, QtGui
 import time
 import shared
 from tr import _translate
-from inventory import Inventory, Missing
+from inventory import Inventory, PendingDownload, PendingUpload
 import l10n
 from retranslateui import RetranslateMixin
 from uisignaler import UISignaler
@@ -45,7 +45,7 @@ class NetworkStatus(QtGui.QWidget, RetranslateMixin):
         return "%4.0f kB" % num
         
     def updateNumberOfObjectsToBeSynced(self):
-        self.labelSyncStatus.setText(_translate("networkstatus", "Object(s) to be synced: %n", None, QtCore.QCoreApplication.CodecForTr, Missing().len()))
+        self.labelSyncStatus.setText(_translate("networkstatus", "Object(s) to be synced: %n", None, QtCore.QCoreApplication.CodecForTr, PendingDownload().len() + PendingUpload().len()))
 
     def updateNumberOfMessagesProcessed(self):
         self.updateNumberOfObjectsToBeSynced()

src/class_receiveDataThread.py

@@ -31,7 +31,7 @@ from helper_sql import sqlQuery
 from debug import logger
 import paths
 import protocol
-from inventory import Inventory, Missing
+from inventory import Inventory, PendingDownload, PendingUpload
 import state
 import throttle
 import tr
@@ -129,7 +129,7 @@ class receiveDataThread(threading.Thread):
         except Exception as err:
             logger.error('Could not delete ' + str(self.hostIdent) + ' from shared.connectedHostsList.' + str(err))
 
-        Missing().threadEnd()
+        PendingDownload().threadEnd()
         shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data'))
         self.checkTimeOffsetNotification()
         logger.debug('receiveDataThread ending. ID ' + str(id(self)) + '. The size of the shared.connectedHostsList is now ' + str(len(shared.connectedHostsList)))
@@ -219,7 +219,7 @@ class receiveDataThread(threading.Thread):
 
         if self.data == '': # if there are no more messages
             try:
-                self.sendgetdata(Missing().pull(100))
+                self.sendgetdata(PendingDownload().pull(100))
             except Queue.Full:
                 pass
         self.processData()
@@ -292,6 +292,9 @@ class receiveDataThread(threading.Thread):
         if self.initiatedConnection:
             state.networkProtocolAvailability[protocol.networkType(self.peer.host)] = True
 
+        # we need to send our own objects to this node
+        PendingUpload().add()
+
         # Let all of our peers know about this new node.
         dataToSend = (int(time.time()), self.streamNumber, 1, self.peer.host, self.remoteNodeIncomingPort)
         protocol.broadcastToSendDataQueues((
@@ -409,7 +412,7 @@ class receiveDataThread(threading.Thread):
         objectsNewToMe = advertisedSet - Inventory().hashes_by_stream(self.streamNumber)
         logger.info('inv message lists %s objects. Of those %s are new to me. It took %s seconds to figure that out.', numberOfItemsInInv, len(objectsNewToMe), time.time()-startTime)
         for item in objectsNewToMe:
-            Missing().add(item)
+            PendingDownload().add(item)
             self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware[item] = 0 # helps us keep from sending inv messages to peers that already know about the objects listed therein
 
     # Send a getdata message to our peer to request the object with the given
@@ -439,15 +442,15 @@ class receiveDataThread(threading.Thread):
                 self.antiIntersectionDelay()
             else:
                 if hash in Inventory():
-                    self.sendObject(Inventory()[hash].payload)
+                    self.sendObject(hash, Inventory()[hash].payload)
                 else:
                     self.antiIntersectionDelay()
                     logger.warning('%s asked for an object with a getdata which is not in either our memory inventory or our SQL inventory. We probably cleaned it out after advertising it but before they got around to asking for it.' % (self.peer,))
 
     # Our peer has requested (in a getdata message) that we send an object.
-    def sendObject(self, payload):
+    def sendObject(self, hash, payload):
         logger.debug('sending an object.')
-        self.sendDataThreadQueue.put((0, 'sendRawData', protocol.CreatePacket('object',payload)))
+        self.sendDataThreadQueue.put((0, 'sendRawData', (hash, protocol.CreatePacket('object',payload))))
 
     def _checkIPAddress(self, host):
         if host[0:12] == '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':

src/class_sendDataThread.py

@@ -12,6 +12,7 @@ from helper_generic import addDataPadding
 from class_objectHashHolder import *
 from addresses import *
 from debug import logger
+from inventory import PendingUpload
 import protocol
 import state
 import throttle
@@ -169,8 +170,12 @@ class sendDataThread(threading.Thread):
                             logger.error('send pong failed')
                             break
                 elif command == 'sendRawData':
+                    hash = None
+                    if type(data) in [list, tuple]:
+                        hash, data = data
                     try:
                         self.sendBytes(data)
+                        PendingUpload().delete(hash)
                     except:
                         logger.error('Sending of data to ' + str(self.peer) + ' failed. sendDataThread thread ' + str(self) + ' ending now.', exc_info=True)
                         break
@@ -188,5 +193,6 @@ class sendDataThread(threading.Thread):
         except:
             pass
         state.sendDataQueues.remove(self.sendDataThreadQueue)
+        PendingUpload().threadEnd()
         logger.info('sendDataThread ending. ID: ' + str(id(self)) + '. Number of queues in sendDataQueues: ' + str(len(state.sendDataQueues)))
         self.objectHashHolderInstance.close()

src/class_singleWorker.py

@@ -18,7 +18,7 @@ import helper_inbox
 from helper_generic import addDataPadding
 import helper_msgcoding
 from helper_threading import *
-from inventory import Inventory
+from inventory import Inventory, PendingUpload
 import l10n
 import protocol
 import state
@@ -176,6 +176,7 @@ class singleWorker(threading.Thread, StoppableThread):
         objectType = 1
         Inventory()[inventoryHash] = (
             objectType, streamNumber, payload, embeddedTime,'')
+        PendingUpload().add(inventoryHash)
 
         logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
 
@@ -266,6 +267,7 @@ class singleWorker(threading.Thread, StoppableThread):
         objectType = 1
         Inventory()[inventoryHash] = (
             objectType, streamNumber, payload, embeddedTime,'')
+        PendingUpload().add(inventoryHash)
 
         logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
 
@@ -356,6 +358,7 @@ class singleWorker(threading.Thread, StoppableThread):
         objectType = 1
         Inventory()[inventoryHash] = (
             objectType, streamNumber, payload, embeddedTime, doubleHashOfAddressData[32:])
+        PendingUpload().add(inventoryHash)
 
         logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
 
@@ -487,6 +490,7 @@ class singleWorker(threading.Thread, StoppableThread):
             objectType = 3
             Inventory()[inventoryHash] = (
                 objectType, streamNumber, payload, embeddedTime, tag)
+            PendingUpload().add(inventoryHash)
             logger.info('sending inv (within sendBroadcast function) for object: ' + hexlify(inventoryHash))
             protocol.broadcastToSendDataQueues((
                 streamNumber, 'advertiseobject', inventoryHash))
@@ -813,6 +817,7 @@ class singleWorker(threading.Thread, StoppableThread):
             objectType = 2
             Inventory()[inventoryHash] = (
                 objectType, toStreamNumber, encryptedPayload, embeddedTime, '')
+            PendingUpload().add(inventoryHash)
             if BMConfigParser().has_section(toaddress) or not protocol.checkBitfield(behaviorBitfield, protocol.BITFIELD_DOESACK):
                 shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Message sent. Sent at %1").arg(l10n.formatTimestamp()))))
             else:
@@ -922,6 +927,7 @@ class singleWorker(threading.Thread, StoppableThread):
         objectType = 1
         Inventory()[inventoryHash] = (
             objectType, streamNumber, payload, embeddedTime, '')
+        PendingUpload().add(inventoryHash)
         logger.info('sending inv (for the getpubkey message)')
         protocol.broadcastToSendDataQueues((
             streamNumber, 'advertiseobject', inventoryHash))

src/helper_generic.py

@@ -19,16 +19,6 @@ def powQueueSize():
             pass
     return curWorkerQueue
 
-def invQueueSize():
-    curInvQueue = 0
-    for thread in enumerate():
-        try:
-            if thread.name == "objectHashHolder":
-                curInvQueue += thread.hashCount()
-        except:
-            pass
-    return curInvQueue
-
 def convertIntToString(n):
     a = __builtins__.hex(n)
     if a[-1:] == 'L':

src/inventory.py

@@ -1,5 +1,6 @@
 import collections
-from threading import current_thread, RLock
+import pprint
+from threading import current_thread, enumerate as threadingEnumerate, RLock
 import time
 
 from helper_sql import *
@@ -37,7 +38,7 @@ class Inventory(collections.MutableMapping):
             value = self.InventoryItem(*value)
             self._inventory[hash] = value
             self._streams[value.stream].add(hash)
-        Missing().delete(hash)
+        PendingDownload().delete(hash)
 
     def __delitem__(self, hash):
         raise NotImplementedError
@@ -85,7 +86,8 @@ class Inventory(collections.MutableMapping):
 
 
 @Singleton
-class Missing(object):
+class PendingDownload(object):
+# keep a track of objects that have been advertised to us but we haven't downloaded them yet
     def __init__(self):
         super(self.__class__, self).__init__()
         self.lock = RLock()
@@ -94,7 +96,7 @@ class Missing(object):
         # don't request the same object more frequently than this
         self.frequency = 60
         # after requesting and not receiving an object more than this times, consider it expired
-        self.maxRequestCount = 6
+        self.maxRequestCount = 3
         self.pending = {}
 
     def add(self, objectHash):
@@ -207,3 +209,83 @@ class Missing(object):
                 del self.pending[current_thread().peer]
             except KeyError:
                 pass
+
+
+class PendingUploadDeadlineException(Exception):
+    pass
+
+
+@Singleton
+class PendingUpload(object):
+# keep a track of objects that we have created but haven't distributed yet
+    def __init__(self):
+        super(self.__class__, self).__init__()
+        self.lock = RLock()
+        self.hashes = {}
+        # end by this time in any case
+        self.deadline = 0
+        self.maxLen = 0
+
+    def add(self, objectHash = None):
+        with self.lock:
+            # add a new object into existing thread lists
+            if objectHash:
+                if objectHash not in self.hashes:
+                    self.hashes[objectHash] = []
+                for thread in threadingEnumerate():
+                    if thread.isAlive() and hasattr(thread, 'peer') and \
+                        thread.peer not in self.hashes[objectHash]:
+                        self.hashes[objectHash].append(thread.peer)
+            # add all objects into the current thread
+            else:
+                for hash in self.hashes:
+                    if current_thread().peer not in self.hashes[hash]:
+                        self.hashes[hash].append(current_thread().peer)
+
+
+    def len(self):
+        with self.lock:
+            return sum(len(self.hashes[x]) > 0 for x in self.hashes)
+
+    def _progress(self):
+        with self.lock:
+            return float(sum(len(self.hashes[x]) for x in self.hashes))
+
+    def progress(self, throwDeadline=True):
+        if self.maxLen < self._progress():
+            self.maxLen = self._progress()
+        if self.deadline < time.time():
+            if self.deadline > 0 and throwDeadline:
+                raise PendingUploadDeadlineException
+            self.deadline = time.time() + 20
+        try:
+            return 1.0 - self._progress() / self.maxLen
+        except ZeroDivisionError:
+            return 1.0
+
+    def delete(self, objectHash):
+        if not hasattr(current_thread(), 'peer'):
+            return
+        with self.lock:
+            if objectHash in self.hashes and current_thread().peer in self.hashes[objectHash]:
+                self.hashes[objectHash].remove(current_thread().peer)
+                if len(self.hashes[objectHash]) == 0:
+                    del self.hashes[objectHash]
+
+    def stop(self):
+        with self.lock:
+            self.hashes = {}
+
+    def threadEnd(self):
+        while True:
+            try:
+                with self.lock:
+                    for objectHash in self.hashes:
+                        if current_thread().peer in self.hashes[objectHash]:
+                            self.hashes[objectHash].remove(current_thread().peer)
+                            if len(self.hashes[objectHash]) == 0:
+                                del self.hashes[objectHash]
+            except (KeyError, RuntimeError):
+                pass
+            else:
+                break