Turn all nacks to requeue False (#811)

A temporary workaround for the rabbitmq errors we are seeing

Author: stephen-riggs

src/murfey/server/feedback.py

@@ -2113,7 +2113,9 @@ def feedback_callback(header: dict, message: dict, _db=murfey_db) -> None:
                 if bfactors_registered:
                     murfey.server._transport_object.transport.ack(header)
                 else:
-                    murfey.server._transport_object.transport.nack(header)
+                    murfey.server._transport_object.transport.nack(
+                        header, requeue=False
+                    )
             return None
         elif message["register"] == "done_bfactor":
             _save_bfactor(message, _db)
@@ -2144,8 +2146,8 @@ def feedback_callback(header: dict, message: dict, _db=murfey_db) -> None:
                 else:
                     # Send it directly to DLQ without trying to rerun it
                     murfey.server._transport_object.transport.nack(
-                        header, requeue=result.get("requeue", False)
-                    )
+                        header, requeue=False
+                    )  # should be result.get("requeue", False)
             if not result:
                 logger.error(
                     f"Workflow {sanitise(message['register'])} returned {result}"
@@ -2160,18 +2162,24 @@ def feedback_callback(header: dict, message: dict, _db=murfey_db) -> None:
         _db.close()
         logger.warning("Murfey database required a rollback")
         if murfey.server._transport_object:
-            murfey.server._transport_object.transport.nack(header, requeue=True)
+            murfey.server._transport_object.transport.nack(
+                header, requeue=False
+            )  # should be True
     except OperationalError:
         logger.warning("Murfey database error encountered", exc_info=True)
         time.sleep(1)
         if murfey.server._transport_object:
-            murfey.server._transport_object.transport.nack(header, requeue=True)
+            murfey.server._transport_object.transport.nack(
+                header, requeue=False
+            )  # should be True
     except NoResultFound:
         # Missing rows might be due to a race condition and should be requeued
         logger.warning("No matching database row was found", exc_info=True)
         time.sleep(1)
         if murfey.server._transport_object:
-            murfey.server._transport_object.transport.nack(header, requeue=True)
+            murfey.server._transport_object.transport.nack(
+                header, requeue=False
+            )  # should be True
     except Exception:
         logger.warning(
             "Exception encountered in server RabbitMQ callback", exc_info=True