Method run_operation

pymongo/synchronous/server.py:138–348

Run a _Query or _GetMore operation and return a Response object. This method is used only to run _Query/_GetMore operations from cursors. Can raise ConnectionFailure, OperationFailure, etc. :param conn: A Connection instance. :param operation: A _Query or _G

(
        self,
        conn: Connection,
        operation: Union[_Query, _GetMore],
        read_preference: _ServerMode,
        listeners: Optional[_EventListeners],
        unpack_res: Callable[..., list[_DocumentOut]],
        client: MongoClient[Any],
    )

    @_handle_reauth
    def run_operation(
        self,
        conn: Connection,
        operation: Union[_Query, _GetMore],
        read_preference: _ServerMode,
        listeners: Optional[_EventListeners],
        unpack_res: Callable[..., list[_DocumentOut]],
        client: MongoClient[Any],
    ) -> Response:
        """Run a _Query or _GetMore operation and return a Response object.

        This method is used only to run _Query/_GetMore operations from
        cursors.
        Can raise ConnectionFailure, OperationFailure, etc.

        :param conn: A Connection instance.
        :param operation: A _Query or _GetMore object.
        :param read_preference: The read preference to use.
        :param listeners: Instance of _EventListeners or None.
        :param unpack_res: A callable that decodes the wire protocol response.
        :param client: A MongoClient instance.
        """
        assert listeners is not None
        publish = listeners.enabled_for_commands
        start = datetime.now()

        use_cmd = operation.use_command(conn)
        more_to_come = operation.conn_mgr and operation.conn_mgr.more_to_come
        cmd, dbn = self.operation_to_command(operation, conn, use_cmd)
        if more_to_come:
            request_id = 0
        else:
            message = operation.get_message(read_preference, conn, use_cmd)
            request_id, data, max_doc_size = self._split_message(message)

        if _COMMAND_LOGGER.isEnabledFor(logging.DEBUG):
            _debug_log(
                _COMMAND_LOGGER,
                message=_CommandStatusMessage.STARTED,
                clientId=client._topology_settings._topology_id,
                command=cmd,
                commandName=next(iter(cmd)),
                databaseName=dbn,
                requestId=request_id,
                operationId=request_id,
                driverConnectionId=conn.id,
                serverConnectionId=conn.server_connection_id,
                serverHost=conn.address[0],
                serverPort=conn.address[1],
                serviceId=conn.service_id,
            )

        if publish:
            if "$db" not in cmd:
                cmd["$db"] = dbn
            assert listeners is not None
            listeners.publish_command_start(
                cmd,