private SinkMetricData getSinkMetricData(String topic) {
        SinkMetricData sinkMetricData;
        if (topicSinkMetricMap.containsKey(topic)) {
            sinkMetricData = topicSinkMetricMap.get(topic);
        } else {
            sinkMetricData = buildSinkMetricData(topic, null, this);
            topicSinkMetricMap.put(topic, sinkMetricData);
        }
        return sinkMetricData;
    }
register sub sink metrics group from metric state

@param metricState MetricState
inlong-sort/sort-flink/base/src/main/java/org/apache/inlong/sort/base/metric/sub/SinkTopicMetricData.java