public String getSrcBaseTopicName(String groupId, String streamId) {
        IdTopicConfig idTopicConfig = getSrcIdTopicConfig(groupId, streamId);
        if (idTopicConfig == null) {
            return null;
        }
        return idTopicConfig.getTopicName();
    }
get source topic by groupId and streamId
inlong-dataproxy/dataproxy-source/src/main/java/org/apache/inlong/dataproxy/config/holder/MetaConfigHolder.java