public FullTextInfo getTopicIndexFullText(String secretId, String secretKey, String region, String topicId) {

        ClsClient clsClient = getClsClient(secretId, secretKey, region);
        DescribeIndexRequest req = new DescribeIndexRequest();
        req.setTopicId(topicId);
        try {
            DescribeIndexResponse resp = clsClient.DescribeIndex(req);
            return resp.getRule() == null ? null : resp.getRule().getFullText();
        } catch (Exception e) {
            String errMsg = "describe cls topic index failed: " + e.getMessage();
            LOG.error(errMsg, e);
            throw new BusinessException(errMsg);
        }
    }
Get cls topic index full text
inlong-manager/manager-service/src/main/java/org/apache/inlong/manager/service/resource/sink/cls/ClsOperator.java