Check number of unacknowledged messages before closing stream only if receiver...

Check number of unacknowledged messages before closing stream only if receiver will retry. Starting stream first, because it may take time.

src/AsapoWorker/asapo_receiver.py

@@ -67,6 +67,8 @@ class SimpleAsapoReceiver:
         "The name of the stream.", type=str, default="default", init=False)
     data_source = Config(
         "Name of input data_source", type=str, default="")
+    n_resend_nacs = Config(
+        "Number if tries to resend unacknowledged messages", type=int, default=0)
 
     @group_id.default
     def _generate_group_id(self):

src/AsapoWorker/streamer.py

@@ -171,12 +171,12 @@ class Streamer:
         except StreamFinishedError as err:
             log.info("Stream is finished")
             self.stream_finished = True
-            left_msgs = len(self.receiver.get_unacknowledged_messages())
-            log.info("Number of unacknowledged messages = %s", left_msgs)
             self._handle_end_of_stream()
             stream_info = self.receiver.get_stream_info()
             self.worker.stream_finished(stream_info)
-            if left_msgs == 0:
+            left_msgs = len(self.receiver.get_unacknowledged_messages())
+            log.info("Number of unacknowledged messages = %s", left_msgs)
+            if left_msgs == 0 or self.receiver.n_resend_nacs == 0:
                 # Stop this instance if it can not start new instance anymore
                 if self.end_of_stream_callback is None:
                     self.stop()