rocketmq 之namesrv（三十九）mqclient admin请求处理拉取broker消费者组状态

拉取broker消费者组状态 AdminBrokerProcessor#fetchAllConsumeStatsInBroker

AdminBrokerProcessor#processRequest#this.fetchAllConsumeStatsInBroker(ctx, request)

private RemotingCommand fetchAllConsumeStatsInBroker(ChannelHandlerContext ctx, RemotingCommand request)
        throws RemotingCommandException {
        final RemotingCommand response = RemotingCommand.createResponseCommand(null);
        GetConsumeStatsInBrokerHeader requestHeader =
            (GetConsumeStatsInBrokerHeader) request.decodeCommandCustomHeader(GetConsumeStatsInBrokerHeader.class);
        boolean isOrder = requestHeader.isOrder();
        /**获取订阅的组 配置信息*/
        ConcurrentMap subscriptionGroups =
            brokerController.getSubscriptionGroupManager().getSubscriptionGroupTable();

        List>> brokerConsumeStatsList =
            new ArrayList>>();

        long totalDiff = 0L;

        for (String group : subscriptionGroups.keySet()) {
            Map> subscripTopicConsumeMap = new HashMap>();
            /**查询被这个消费组消费的topic*/
            Set topics = this.brokerController.getConsumerOffsetManager().whichTopicByConsumer(group);
            List consumeStatsList = new ArrayList();
            for (String topic : topics) {
                ConsumeStats consumeStats = new ConsumeStats();
                /**获取topic配置*/
                TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
                if (null == topicConfig) {
                    log.warn("consumeStats, topic config not exist, {}", topic);
                    continue;
                }

                if (isOrder && !topicConfig.isOrder()) {
                    continue;
                }

                {
                    /**查询topic、消费组的订阅信息*/
                    SubscriptionData findSubscriptionData = this.brokerController.getConsumerManager().findSubscriptionData(group, topic);

                    if (null == findSubscriptionData
                        && this.brokerController.getConsumerManager().findSubscriptionDataCount(group) > 0) {
                        log.warn("consumeStats, the consumer group[{}], topic[{}] not exist", group, topic);
                        continue;
                    }
                }
                /**遍历topicConfig配置的写队列*/
                for (int i = 0; i < topicConfig.getWriteQueueNums(); i++) {
                    MessageQueue mq = new MessageQueue();
                    mq.setTopic(topic);
                    mq.setBrokerName(this.brokerController.getBrokerConfig().getBrokerName());
                    mq.setQueueId(i);
                    OffsetWrapper offsetWrapper = new OffsetWrapper();
                    long brokerOffset = this.brokerController.getMessageStore().getMaxOffsetInQueue(topic, i);
                    if (brokerOffset < 0)
                        brokerOffset = 0;
                    long consumerOffset = this.brokerController.getConsumerOffsetManager().queryOffset(
                        group,
                        topic,
                        i);
                    if (consumerOffset < 0)
                        consumerOffset = 0;

                    offsetWrapper.setBrokerOffset(brokerOffset);
                    offsetWrapper.setConsumerOffset(consumerOffset);

                    long timeOffset = consumerOffset - 1;
                    if (timeOffset >= 0) {
                        long lastTimestamp = this.brokerController.getMessageStore().getMessageStoreTimeStamp(topic, i, timeOffset);
                        if (lastTimestamp > 0) {
                            offsetWrapper.setLastTimestamp(lastTimestamp);
                        }
                    }
                    consumeStats.getOffsetTable().put(mq, offsetWrapper);
                }
                /**根据消费组和topic获取tps*/
                double consumeTps = this.brokerController.getBrokerStatsManager().tpsGroupGetNums(group, topic);
                consumeTps += consumeStats.getConsumeTps();
                consumeStats.setConsumeTps(consumeTps);
                totalDiff += consumeStats.computeTotalDiff();
                consumeStatsList.add(consumeStats);
            }
            subscripTopicConsumeMap.put(group, consumeStatsList);
            brokerConsumeStatsList.add(subscripTopicConsumeMap);
        }
        ConsumeStatsList consumeStats = new ConsumeStatsList();
        consumeStats.setBrokerAddr(brokerController.getBrokerAddr());
        consumeStats.setConsumeStatsList(brokerConsumeStatsList);
        consumeStats.setTotalDiff(totalDiff);
        response.setBody(consumeStats.encode());
        response.setCode(ResponseCode.SUCCESS);
        response.setRemark(null);
        return response;
    }

public double tpsGroupGetNums(final String group, final String topic) {
        final String statsKey = buildStatsKey(topic, group);
        return this.statsTable.get(GROUP_GET_NUMS).getStatsDataInMinute(statsKey).getTps();
    }