in src/main/java/org/apache/rocketmq/exporter/collector/RMQMetricsCollector.java [683:691]
public void addGroupDiffMetric(String countOfOnlineConsumers, String group, String topic, String msgModel, long value) {
if (topic.startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
this.consumerRetryDiff.put(new ConsumerTopicDiffMetric(group, topic, countOfOnlineConsumers, msgModel), value);
} else if (topic.startsWith(MixAll.DLQ_GROUP_TOPIC_PREFIX)) {
this.consumerDLQDiff.put(new ConsumerTopicDiffMetric(group, topic, countOfOnlineConsumers, msgModel), value);
} else {
this.consumerDiff.put(new ConsumerTopicDiffMetric(group, topic, countOfOnlineConsumers, msgModel), value);
}
}