def query_streamer(self, index):
        """Query the status of the streamer at the given index."""

        if index >= len(self.graph.streamers):
            return None

        info = self.streamer_status[index]
        highest_ack = self.streamer_acks.get(index, 0)

        return [info.last_attempt_time, info.last_success_time, info.last_error, highest_ack, info.last_status, info.attempt_number, info.comm_status]
Query the status of the streamer at the given index.