Fix bug where files downloaded directly do not exist when the watchdog event fires

converter.py

@@ -70,6 +70,17 @@ class Handler(watchdog.events.PatternMatchingEventHandler):
 
     def on_created(self, event):
         print('File found: {}'.format(event.src_path))
+
+        fileExists = False
+        timeout = 0
+        while not fileExists:
+            fileExists = os.path.isfile(event.src_path)
+            time.sleep(1)
+            timeout += 1
+
+            if timeout > 10:
+                print('Timeout waiting for file {} to exist. Aborting processing.'.format(event.src_path))
+                return
         
         historicalSize = -1
         while (historicalSize != os.path.getsize(event.src_path)):