More accurate PendingUpload tracking

- works correctly when starting offline
- stops tracking after after 60 seconds but only if at least 1
  successful upload

src/class_sendDataThread.py

@@ -187,12 +187,12 @@ class sendDataThread(threading.Thread):
                             logger.error('send pong failed')
                             break
                 elif command == 'sendRawData':
-                    hash = None
+                    objectHash = None
                     if type(data) in [list, tuple]:
-                        hash, data = data
+                        objectHash, data = data
                     try:
                         self.sendBytes(data)
-                        PendingUpload().delete(hash)
+                        PendingUpload().delete(objectHash)
                     except:
                         logger.error('Sending of data to ' + str(self.peer) + ' failed. sendDataThread thread ' + str(self) + ' ending now.', exc_info=True)
                         break

src/inventory.py

@@ -225,36 +225,48 @@ class PendingUpload(object):
         # end by this time in any case
         self.deadline = 0
         self.maxLen = 0
+        # during shutdown, wait up to 20 seconds to finish uploading
+        self.shutdownWait = 20
+        # forget tracking objects after 60 seconds
+        self.objectWait = 60
+        # wait 10 seconds between clears
+        self.clearDelay = 10
+        self.lastCleared = time.time()
 
     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] = []
+                    self.hashes[objectHash] = {'created': time.time(), 'sendCount': 0, 'peers': []}
                 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)
+                        thread.peer not in self.hashes[objectHash]['peers']:
+                        self.hashes[objectHash]['peers'].append(thread.peer)
             # add all objects into the current thread
             else:
                 for objectHash in self.hashes:
-                    if current_thread().peer not in self.hashes[objectHash]:
-                        self.hashes[objectHash].append(current_thread().peer)
+                    if current_thread().peer not in self.hashes[objectHash]['peers']:
+                        self.hashes[objectHash]['peers'].append(current_thread().peer)
 
     def len(self):
+        self.clearHashes()
         with self.lock:
-            return sum(len(self.hashes[x]) > 0 for x in self.hashes)
+            return sum(1
+                for x in self.hashes if (self.hashes[x]['created'] + self.objectWait < time.time() or
+                    self.hashes[x]['sendCount'] == 0))
 
     def _progress(self):
         with self.lock:
-            return float(sum(len(self.hashes[x]) for x in self.hashes))
+            return float(sum(len(self.hashes[x]['peers'])
+                for x in self.hashes if (self.hashes[x]['created'] + self.objectWait < time.time()) or
+                    self.hashes[x]['sendCount'] == 0))
 
-    def progress(self, throwDeadline=True):
+    def progress(self, raiseDeadline=True):
         if self.maxLen < self._progress():
             self.maxLen = self._progress()
         if self.deadline < time.time():
-            if self.deadline > 0 and throwDeadline:
+            if self.deadline > 0 and raiseDeadline:
                 raise PendingUploadDeadlineException
             self.deadline = time.time() + 20
         try:
@@ -262,29 +274,48 @@ class PendingUpload(object):
         except ZeroDivisionError:
             return 1.0
 
-    def delete(self, objectHash):
+    def clearHashes(self, objectHash=None):
+        if objectHash is None:
+            if self.lastCleared > time.time() - self.clearDelay:
+                return
+            objects = self.hashes.keys()
+        else:
+            objects = objectHash, 
+        with self.lock:
+            for i in objects:
+                try:
+                    if self.hashes[i]['sendCount'] > 0 and (
+                        len(self.hashes[i]['peers']) == 0 or 
+                        self.hashes[i]['created'] + self.objectWait < time.time()):
+                        del self.hashes[i]
+                except KeyError:
+                    pass
+        self.lastCleared = time.time()
+    
+    def delete(self, objectHash=None):
         if not hasattr(current_thread(), 'peer'):
             return
+        if objectHash is None:
+            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]
+            try:
+                if objectHash in self.hashes and current_thread().peer in self.hashes[objectHash]['peers']:
+                    self.hashes[objectHash]['sendCount'] += 1
+                    self.hashes[objectHash]['peers'].remove(current_thread().peer)
+            except KeyError:
+                    pass
+        self.clearHashes(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):
+                try:
+                    if current_thread().peer in self.hashes[objectHash]['peers']:
+                        self.hashes[objectHash]['peers'].remove(current_thread().peer)
+                except KeyError:
                     pass
-            else:
-                break
+        self.clearHashes()