public void fillSrcMetricItemsByEvent(Event event, boolean isSuccess, long size) {
        fillMetricItemsByEvent(event, true, true, isSuccess, size, 0);
    }
Fill source metric items by event

@param event    the event object
@param isSuccess  whether success read
@param size       the message size
inlong-dataproxy/dataproxy-source/src/main/java/org/apache/inlong/dataproxy/metrics/DataProxyMetricItemSet.java