made service less crashy

cnn_classification_service/main.py

@@ -24,12 +24,19 @@ def message_callback(channel, method, properties, body):
             msg = json.loads(body.decode('utf-8'))
         except (UnicodeDecodeError, json.JSONDecodeError) as e:
             logging.warning(f"Invalid message recieved: {e}")
+            channel.basic_ack(delivery_tag=method.delivery_tag)  # We don't want this to be requeue
             return
 
         scope.span.log_kv({'event': 'messageParsed', 'sampleTag': msg['tag']})
 
-        with opentracing.tracer.start_active_span('magicDoer.run_everything'):
+        with opentracing.tracer.start_active_span('magicDoer.runEverything'):
+            try:
                 results = MagicDoer.run_everything(msg)  # <- This is where the magic happens
+            except Exception as e:
+                logging.error(f"Something went wrong during AI run: {e}")
+                logging.exception(e)
+                channel.basic_nack(delivery_tag=method.delivery_tag, requeue=True)
+                return
 
         if results:
             channel.basic_publish(
@@ -37,6 +44,7 @@ def message_callback(channel, method, properties, body):
                 routing_key='classification-result',
                 body=json.dumps(results).encode("utf-8")
             )
+
         channel.basic_ack(delivery_tag=method.delivery_tag)