Throw an exception when a stream stops due to errors

src/AsapoWorker/streamer.py

@@ -32,12 +32,10 @@ class Streamer:
             self.worker.process(data, metadata)
         except (AsapoProducerError, ConfigurationError) as err:
             log.critical("Sending failed: " + str(err))
-            self.stop()
-            return False
+            raise err
         except Exception as err:
             log.exception("Worker could not process data.")
-            self.stop()
-            return False
+            raise err
 
         return True
 
@@ -60,8 +58,7 @@ class Streamer:
         except Exception as err:
             log.critical("Unhandled exception", exc_info=True)
             self._handle_receiver_critical_error()
-            self.stop()
-            return None, None
+            raise err
 
         self.started = True
 
@@ -97,15 +94,16 @@ class Streamer:
     def run(self):
         log.info("Start stream processing.")
         self.stopped.clear()
-        while not self.stopped.is_set():
-            success = self._process_stream()
-            if not success:
-                self.stopped.wait(self.delay_on_error)
-                self._increase_delay_on_error()
-            else:
-                self._reset_delay_on_error()
-
-        self._shutdown()
+        try:
+            while not self.stopped.is_set():
+                success = self._process_stream()
+                if not success:
+                    self.stopped.wait(self.delay_on_error)
+                    self._increase_delay_on_error()
+                else:
+                    self._reset_delay_on_error()
+        finally:
+            self._shutdown()
 
     def _increase_delay_on_error(self):
         self.delay_on_error = max(