daemon/__init__.py

@@ -52,6 +52,7 @@ class Daemon:
             except Exception as e:
                 msg = "Exception during processing of queue item %s: %s"
                 self.logger.exception(msg, pres_id, queue_item, exc_info=e)
+                # write the que info and error to disk for play-api to display the status
                 with open(os.path.join(self.error_dir, pres_id), 'w') as f:
                     queue_item['error'] = e
                     json.dump(queue_item, f)

daemon/pipeline.py

@@ -170,6 +170,7 @@ class Pipeline:
         # Delete queue file and upload data
         os.remove(os.path.join(self.queue, target_id))
         try:
+            # if any old error file remove it since now iot has worked
             os.remove(os.path.join(self.error, target_id))
         except OSError:
             pass