update meta consumer

pilab/events/meta.py

@@ -88,20 +88,20 @@ class MetaListener(threading.Thread):
         self.offset = offset
         self.channel = None
         self.connection = None
-
-        self._prefetch_count = 2
+        self._prefetch_count = 1
 
     def default_callback(self, ch, method, properties, body):
         try:
             event = Event.parse_obj(json.loads(body.decode('utf-8')))
             offset = properties.headers['x-stream-offset']
             self.callback(event, offset)
-            ch.basic_ack(delivery_tag=method.delivery_tag)
+            self.channel.basic_ack(method.delivery_tag)
             self.offset = offset
             logger.info(f"Event processed succesful")
         except Exception as e:
             traceback.print_exc()
-            logger.error(f"Failed to process Event; message {e}")
+            logger.error(f"Failed to process Meta event; message {e}")
+            raise
 
     def run(self):
         while True:
@@ -128,9 +128,13 @@ class MetaListener(threading.Thread):
             # Do not recover on channel errors
             except pika.exceptions.AMQPChannelError as err:
                 logger.error(f"Caught a channel error: {err}, stopping...")
-                break
+                continue
             # Recover on all other connection errors
             except pika.exceptions.AMQPConnectionError:
                 logger.error(f"Connection closed unexpected, retrying...")
                 time.sleep(1)
                 continue
+            except Exception:
+                logger.error(f"Unexpected error occured, retrying...")
+                time.sleep(1)
+                continue

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='pilab',
-    version='3.4.2',
+    version='3.5.2',
     description='Shared-Libs for the pi-lab microservices',
     url='https://code.fbi.h-da.de/api/v4/projects/27896/packages/pypi/pilab',
     author='Max Reinheimer',