Java Code Examples for com.alibaba.rocketmq.common.UtilAll#isBlank()

/**
 * Validate topic
 *
 * @param topic
 *
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkTopic(String topic) throws MQClientException {
    if (UtilAll.isBlank(topic)) {
        throw new MQClientException("the specified topic is blank", null);
    }

    if (!regularExpressionMatcher(topic, PATTERN)) {
        throw new MQClientException(String.format(
                "the specified topic[%s] contains illegal characters, allowing only %s", topic,
                VALID_PATTERN_STR), null);
    }

    if (topic.length() > CHARACTER_MAX_LENGTH) {
        throw new MQClientException("the specified topic is longer than topic max length 255.", null);
    }

    //whether the same with system reserved keyword
    if (topic.equals(MixAll.DEFAULT_TOPIC)) {
        throw new MQClientException(
                String.format("the topic[%s] is conflict with default topic.", topic), null);
    }
}
 

/**
 * 校验topic有效性
 *
 * @param topic
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkTopic(String topic) throws MQClientException {
    //检验topic是否为空或者""
    if (UtilAll.isBlank(topic)) {
        throw new MQClientException("the specified topic is blank", null);
    }
    //判断topic包含非法字符（除数字和字母外的字符）
    if (!regularExpressionMatcher(topic, PATTERN)) {
        throw new MQClientException(
            String.format("the specified topic[%s] contains illegal characters, allowing only %s", topic,
                VALID_PATTERN_STR),
            null);
    }
    //判断topic长度是否超长
    if (topic.length() > CHARACTER_MAX_LENGTH) {
        throw new MQClientException("the specified topic is longer than topic max length 255.", null);
    }

    //判断topic是否和系统默认的topic相等
    if (topic.equals(MixAll.DEFAULT_TOPIC)) {
        throw new MQClientException(String.format("the topic[%s] is conflict with default topic.", topic),
            null);
    }
}
 

/**
 * Validate group
 *
 * @param group
 *
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkGroup(String group) throws MQClientException {
    if (UtilAll.isBlank(group)) {
        throw new MQClientException("the specified group is blank", null);
    }
    if (!regularExpressionMatcher(group, PATTERN)) {
        throw new MQClientException(String.format(
                "the specified group[%s] contains illegal characters, allowing only %s", group,
                VALID_PATTERN_STR), null);
    }
    if (group.length() > CHARACTER_MAX_LENGTH) {
        throw new MQClientException("the specified group is longer than group max length 255.", null);
    }
}
 

/**
 * @param origin
 * @param projectGroup
 * @return
 */
public static String buildWithProjectGroup(String origin, String projectGroup) {
    if (!UtilAll.isBlank(projectGroup)) {
        String prefix = String.format(VIRTUAL_APPGROUP_PREFIX, projectGroup);
        if (!origin.endsWith(prefix)) {
            return origin + prefix;
        }
        else {
            return origin;
        }
    }
    else {
        return origin;
    }
}
 

/**
 * @param origin
 * @param projectGroup
 * @return
 */
public static String clearProjectGroup(String origin, String projectGroup) {
    String prefix = String.format(VIRTUAL_APPGROUP_PREFIX, projectGroup);
    if (!UtilAll.isBlank(prefix) && origin.endsWith(prefix)) {
        return origin.substring(0, origin.lastIndexOf(prefix));
    }
    else {
        return origin;
    }
}
 

public Map<Integer, Long> queryMinOffsetInAllGroup(final String topic, final String filterGroups) {

        Map<Integer, Long> queueMinOffset = new HashMap<Integer, Long>();
        Set<String> topicGroups = this.offsetTable.keySet();
        if (!UtilAll.isBlank(filterGroups)) {
            for (String group : filterGroups.split(",")) {
                Iterator<String> it = topicGroups.iterator();
                while (it.hasNext()) {
                    if (group.equals(it.next().split(TOPIC_GROUP_SEPARATOR)[1])) {
                        it.remove();
                    }
                }
            }
        }

        for (Map.Entry<String, ConcurrentHashMap<Integer, Long>> offSetEntry : this.offsetTable.entrySet()) {
            String topicGroup = offSetEntry.getKey();
            String[] topicGroupArr = topicGroup.split(TOPIC_GROUP_SEPARATOR);
            if (topic.equals(topicGroupArr[0])) {
                for (Entry<Integer, Long> entry : offSetEntry.getValue().entrySet()) {
                    long minOffset = this.brokerController.getMessageStore().getMinOffsetInQuque(topic, entry.getKey());
                    if (entry.getValue() >= minOffset) {
                        Long offset = queueMinOffset.get(entry.getKey());
                        if (offset == null) {
                            queueMinOffset.put(entry.getKey(), Math.min(Long.MAX_VALUE, entry.getValue()));
                        } else {
                            queueMinOffset.put(entry.getKey(), Math.min(entry.getValue(), offset));
                        }
                    }
                }
            }

        }
        return queueMinOffset;
    }
 

public String buildMQClientId() {
    StringBuilder sb = new StringBuilder();
    sb.append(this.getClientIP());

    sb.append("@");
    sb.append(this.getInstanceName());
    if (!UtilAll.isBlank(this.unitName)) {
        sb.append("@");
        sb.append(this.unitName);
    }

    return sb.toString();
}
 

public void sendMessageBack(MessageExt msg, int delayLevel, final String brokerName, String consumerGroup)
        throws RemotingException, MQBrokerException, InterruptedException, MQClientException {
    try {
        String brokerAddr = (null != brokerName) ? this.mQClientFactory.findBrokerAddressInPublish(brokerName)
                : RemotingHelper.parseSocketAddressAddr(msg.getStoreHost());

        if (UtilAll.isBlank(consumerGroup)) {
            consumerGroup = this.defaultMQPullConsumer.getConsumerGroup();
        }

        this.mQClientFactory.getMQClientAPIImpl().consumerSendMessageBack(brokerAddr, msg, consumerGroup, delayLevel, 3000,
                this.defaultMQPullConsumer.getMaxReconsumeTimes());
    } catch (Exception e) {
        log.error("sendMessageBack Exception, " + this.defaultMQPullConsumer.getConsumerGroup(), e);

        Message newMsg = new Message(MixAll.getRetryTopic(this.defaultMQPullConsumer.getConsumerGroup()), msg.getBody());
        String originMsgId = MessageAccessor.getOriginMessageId(msg);
        MessageAccessor.setOriginMessageId(newMsg, UtilAll.isBlank(originMsgId) ? msg.getMsgId() : originMsgId);
        newMsg.setFlag(msg.getFlag());
        MessageAccessor.setProperties(newMsg, msg.getProperties());
        MessageAccessor.putProperty(newMsg, MessageConst.PROPERTY_RETRY_TOPIC, msg.getTopic());
        MessageAccessor.setReconsumeTime(newMsg, String.valueOf(msg.getReconsumeTimes() + 1));
        MessageAccessor.setMaxReconsumeTimes(newMsg, String.valueOf(this.defaultMQPullConsumer.getMaxReconsumeTimes()));
        newMsg.setDelayTimeLevel(3 + msg.getReconsumeTimes());
        this.mQClientFactory.getDefaultMQProducer().send(newMsg);
    }
}
 

/**
 * 获取topic状态相关信息
 * 
 * @param addr
 * @param topic
 * @param timeoutMillis
 * @return
 * @throws InterruptedException
 * @throws RemotingTimeoutException
 * @throws RemotingSendRequestException
 * @throws RemotingConnectException
 * @throws MQBrokerException
 */
public TopicStatsTable getTopicStatsInfo(final String addr, final String topic, final long timeoutMillis)
        throws InterruptedException, RemotingTimeoutException, RemotingSendRequestException,
        RemotingConnectException, MQBrokerException {
    String topicWithProjectGroup = topic;
    if (!UtilAll.isBlank(projectGroupPrefix)) {
        topicWithProjectGroup = VirtualEnvUtil.buildWithProjectGroup(topic, projectGroupPrefix);
    }

    GetTopicStatsInfoRequestHeader requestHeader = new GetTopicStatsInfoRequestHeader();
    requestHeader.setTopic(topicWithProjectGroup);

    RemotingCommand request =
            RemotingCommand.createRequestCommand(RequestCode.GET_TOPIC_STATS_INFO, requestHeader);

    RemotingCommand response = this.remotingClient.invokeSync(addr, request, timeoutMillis);
    switch (response.getCode()) {
    case ResponseCode.SUCCESS: {
        TopicStatsTable topicStatsTable =
                TopicStatsTable.decode(response.getBody(), TopicStatsTable.class);
        if (!UtilAll.isBlank(projectGroupPrefix)) {
            HashMap<MessageQueue, TopicOffset> newTopicOffsetMap =
                    new HashMap<MessageQueue, TopicOffset>();
            for (Map.Entry<MessageQueue, TopicOffset> messageQueue : topicStatsTable.getOffsetTable()
                .entrySet()) {
                MessageQueue key = messageQueue.getKey();
                key.setTopic(VirtualEnvUtil.clearProjectGroup(key.getTopic(), projectGroupPrefix));
                newTopicOffsetMap.put(key, messageQueue.getValue());
            }
            topicStatsTable.setOffsetTable(newTopicOffsetMap);
        }
        return topicStatsTable;
    }
    default:
        break;
    }

    throw new MQBrokerException(response.getCode(), response.getRemark());
}
 

public void sendMessageBack(MessageExt msg, int delayLevel, final String brokerName, String consumerGroup)
        throws RemotingException, MQBrokerException, InterruptedException, MQClientException {
    try {
        String brokerAddr =
                (null != brokerName) ? this.mQClientFactory.findBrokerAddressInPublish(brokerName)
                        : RemotingHelper.parseSocketAddressAddr(msg.getStoreHost());

        if (UtilAll.isBlank(consumerGroup)) {
            consumerGroup = this.defaultMQPullConsumer.getConsumerGroup();
        }

        this.mQClientFactory.getMQClientAPIImpl().consumerSendMessageBack(brokerAddr, msg, consumerGroup,
            delayLevel, 3000);
    }
    catch (Exception e) {
        log.error("sendMessageBack Exception, " + this.defaultMQPullConsumer.getConsumerGroup(), e);

        Message newMsg = new Message(MixAll.getRetryTopic(this.defaultMQPullConsumer.getConsumerGroup()),
            msg.getBody());

        newMsg.setFlag(msg.getFlag());
        MessageAccessor.setProperties(newMsg, msg.getProperties());
        MessageAccessor.putProperty(newMsg, MessageConst.PROPERTY_RETRY_TOPIC, msg.getTopic());

        this.mQClientFactory.getDefaultMQProducer().send(newMsg);
    }
}
 

/**
 * @param origin
 * @param projectGroup
 * @return
 */
public static String buildWithProjectGroup(String origin, String projectGroup) {
    if (!UtilAll.isBlank(projectGroup)) {
        String prefix = String.format(VIRTUAL_APPGROUP_PREFIX, projectGroup);
        if (!origin.endsWith(prefix)) {
            return origin + prefix;
        } else {
            return origin;
        }
    } else {
        return origin;
    }
}
 

/**
 * 注册client
 * 
 * @param addr
 * @param heartbeat
 * @param timeoutMillis
 * @return
 * @throws RemotingException
 * @throws InterruptedException
 */
public boolean registerClient(final String addr, final HeartbeatData heartbeat, final long timeoutMillis)
        throws RemotingException, InterruptedException {
    if (!UtilAll.isBlank(projectGroupPrefix)) {
        Set<ConsumerData> consumerDatas = heartbeat.getConsumerDataSet();
        for (ConsumerData consumerData : consumerDatas) {
            consumerData.setGroupName(
                VirtualEnvUtil.buildWithProjectGroup(consumerData.getGroupName(), projectGroupPrefix));
            Set<SubscriptionData> subscriptionDatas = consumerData.getSubscriptionDataSet();
            for (SubscriptionData subscriptionData : subscriptionDatas) {
                subscriptionData.setTopic(VirtualEnvUtil
                    .buildWithProjectGroup(subscriptionData.getTopic(), projectGroupPrefix));
            }
        }
        Set<ProducerData> producerDatas = heartbeat.getProducerDataSet();
        for (ProducerData producerData : producerDatas) {
            producerData.setGroupName(
                VirtualEnvUtil.buildWithProjectGroup(producerData.getGroupName(), projectGroupPrefix));
        }
    }

    RemotingCommand request = RemotingCommand.createRequestCommand(RequestCode.HEART_BEAT, null);

    request.setBody(heartbeat.encode());
    RemotingCommand response = this.remotingClient.invokeSync(addr, request, timeoutMillis);
    return response.getCode() == ResponseCode.SUCCESS;
}
 

public Map<Integer, Long> queryMinOffsetInAllGroup(final String topic, final String filterGroups) {

        Map<Integer, Long> queueMinOffset = new HashMap<Integer, Long>();
        Set<String> topicGroups = this.offsetTable.keySet();
        if (!UtilAll.isBlank(filterGroups)) {
            for (String group : filterGroups.split(",")) {
                Iterator<String> it = topicGroups.iterator();
                while (it.hasNext()) {
                    if (group.equals(it.next().split(TOPIC_GROUP_SEPARATOR)[1])) {
                        it.remove();
                    }
                }
            }
        }
        for (String topicGroup : topicGroups) {
            String[] topicGroupArr = topicGroup.split(TOPIC_GROUP_SEPARATOR);
            if (topic.equals(topicGroupArr[0])) {
                for (Entry<Integer, Long> entry : this.offsetTable.get(topicGroup).entrySet()) {
                    long minOffset = this.brokerController.getMessageStore().getMinOffsetInQuque(topic, entry.getKey());
                    if (entry.getValue() >= minOffset) {
                        Long offset = queueMinOffset.get(entry.getKey());
                        if (offset == null) {
                            queueMinOffset.put(entry.getKey(), Math.min(Long.MAX_VALUE, entry.getValue()));
                        }
                        else {
                            queueMinOffset.put(entry.getKey(), Math.min(entry.getValue(), offset));
                        }
                    }
                }
            }
        }
        return queueMinOffset;
    }
 

/**
 * Validate group
 *
 * @param group
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkGroup(String group) throws MQClientException {
    if (UtilAll.isBlank(group)) {
        throw new MQClientException("the specified group is blank", null);
    }
    if (!regularExpressionMatcher(group, PATTERN)) {
        throw new MQClientException(
            String.format("the specified group[%s] contains illegal characters, allowing only %s", group,
                VALID_PATTERN_STR),
            null);
    }
    if (group.length() > CHARACTER_MAX_LENGTH) {
        throw new MQClientException("the specified group is longer than group max length 255.", null);
    }
}
 

/**
 * Validate group
 *
 * @param group
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkGroup(String group) throws MQClientException {
    if (UtilAll.isBlank(group)) {
        throw new MQClientException("the specified group is blank", null);
    }
    if (!regularExpressionMatcher(group, PATTERN)) {
        throw new MQClientException(String.format(
                "the specified group[%s] contains illegal characters, allowing only %s", group,
                VALID_PATTERN_STR), null);
    }
    if (group.length() > CHARACTER_MAX_LENGTH) {
        throw new MQClientException("the specified group is longer than group max length 255.", null);
    }
}
 

private RemotingCommand getConsumeStats(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    final GetConsumeStatsRequestHeader requestHeader =
            (GetConsumeStatsRequestHeader) request.decodeCommandCustomHeader(GetConsumeStatsRequestHeader.class);

    ConsumeStats consumeStats = new ConsumeStats();

    Set<String> topics = new HashSet<String>();
    if (UtilAll.isBlank(requestHeader.getTopic())) {
        topics = this.brokerController.getConsumerOffsetManager().whichTopicByConsumer(requestHeader.getConsumerGroup());
    }
    else {
        topics.add(requestHeader.getTopic());
    }

    for (String topic : topics) {
        TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
        if (null == topicConfig) {
            log.warn("consumeStats, topic config not exist, {}", topic);
            continue;
        }
        {
            SubscriptionData findSubscriptionData =
                    this.brokerController.getConsumerManager().findSubscriptionData(requestHeader.getConsumerGroup(), topic);
            if (null == findSubscriptionData //
                    && this.brokerController.getConsumerManager().findSubscriptionDataCount(requestHeader.getConsumerGroup()) > 0) {
                log.warn("consumeStats, the consumer group[{}], topic[{}] not exist", requestHeader.getConsumerGroup(), topic);
                continue;
            }
        }

        for (int i = 0; i < topicConfig.getReadQueueNums(); 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().getMaxOffsetInQuque(topic, i);
            if (brokerOffset < 0)
                brokerOffset = 0;

            long consumerOffset = this.brokerController.getConsumerOffsetManager().queryOffset(//
                requestHeader.getConsumerGroup(),//
                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);
        }

        double consumeTps = this.brokerController.getBrokerStatsManager().tpsGroupGetNums(requestHeader.getConsumerGroup(), topic);

        consumeTps += consumeStats.getConsumeTps();
        consumeStats.setConsumeTps(consumeTps);
    }

    byte[] body = consumeStats.encode();
    response.setBody(body);
    response.setCode(ResponseCode.SUCCESS);
    response.setRemark(null);
    return response;
}
 

private RemotingCommand getConsumeStats(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    final GetConsumeStatsRequestHeader requestHeader =
            (GetConsumeStatsRequestHeader) request.decodeCommandCustomHeader(GetConsumeStatsRequestHeader.class);

    ConsumeStats consumeStats = new ConsumeStats();

    Set<String> topics = new HashSet<String>();
    if (UtilAll.isBlank(requestHeader.getTopic())) {
        topics = this.brokerController.getConsumerOffsetManager().whichTopicByConsumer(requestHeader.getConsumerGroup());
    } else {
        topics.add(requestHeader.getTopic());
    }

    for (String topic : topics) {
        TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
        if (null == topicConfig) {
            log.warn("consumeStats, topic config not exist, {}", topic);
            continue;
        }

        /**

         */
        {
            SubscriptionData findSubscriptionData =
                    this.brokerController.getConsumerManager().findSubscriptionData(requestHeader.getConsumerGroup(), topic);

            if (null == findSubscriptionData //
                    && this.brokerController.getConsumerManager().findSubscriptionDataCount(requestHeader.getConsumerGroup()) > 0) {
                log.warn("consumeStats, the consumer group[{}], topic[{}] not exist", requestHeader.getConsumerGroup(), topic);
                continue;
            }
        }

        for (int i = 0; i < topicConfig.getReadQueueNums(); 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().getMaxOffsetInQuque(topic, i);
            if (brokerOffset < 0)
                brokerOffset = 0;

            long consumerOffset = this.brokerController.getConsumerOffsetManager().queryOffset(//
                    requestHeader.getConsumerGroup(), //
                    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);
        }

        double consumeTps = this.brokerController.getBrokerStatsManager().tpsGroupGetNums(requestHeader.getConsumerGroup(), topic);

        consumeTps += consumeStats.getConsumeTps();
        consumeStats.setConsumeTps(consumeTps);
    }

    byte[] body = consumeStats.encode();
    response.setBody(body);
    response.setCode(ResponseCode.SUCCESS);
    response.setRemark(null);
    return response;
}
 

private RemotingCommand cloneGroupOffset(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    CloneGroupOffsetRequestHeader requestHeader =
            (CloneGroupOffsetRequestHeader) request.decodeCommandCustomHeader(CloneGroupOffsetRequestHeader.class);

    Set<String> topics;
    if (UtilAll.isBlank(requestHeader.getTopic())) {
        topics = this.brokerController.getConsumerOffsetManager().whichTopicByConsumer(requestHeader.getSrcGroup());
    } else {
        topics = new HashSet<String>();
        topics.add(requestHeader.getTopic());
    }

    for (String topic : topics) {
        TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
        if (null == topicConfig) {
            log.warn("[cloneGroupOffset], topic config not exist, {}", topic);
            continue;
        }

        /**

         */
        if (!requestHeader.isOffline()) {

            SubscriptionData findSubscriptionData =
                    this.brokerController.getConsumerManager().findSubscriptionData(requestHeader.getSrcGroup(), topic);
            if (this.brokerController.getConsumerManager().findSubscriptionDataCount(requestHeader.getSrcGroup()) > 0
                    && findSubscriptionData == null) {
                log.warn("[cloneGroupOffset], the consumer group[{}], topic[{}] not exist", requestHeader.getSrcGroup(), topic);
                continue;
            }
        }

        this.brokerController.getConsumerOffsetManager().cloneOffset(requestHeader.getSrcGroup(), requestHeader.getDestGroup(),
                requestHeader.getTopic());
    }

    response.setCode(ResponseCode.SUCCESS);
    response.setRemark(null);
    return response;
}
 

private RemotingCommand cloneGroupOffset(ChannelHandlerContext ctx, RemotingCommand request)
        throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    CloneGroupOffsetRequestHeader requestHeader = (CloneGroupOffsetRequestHeader) request
        .decodeCommandCustomHeader(CloneGroupOffsetRequestHeader.class);

    Set<String> topics;
    if (UtilAll.isBlank(requestHeader.getTopic())) {
        topics = this.brokerController.getConsumerOffsetManager()
            .whichTopicByConsumer(requestHeader.getSrcGroup());
    }
    else {
        topics = new HashSet<String>();
        topics.add(requestHeader.getTopic());
    }

    for (String topic : topics) {
        TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
        if (null == topicConfig) {
            log.warn("[cloneGroupOffset], topic config not exist, {}", topic);
            continue;
        }

        /**
         * Consumer不在线的时候，也允许查询消费进度
         */
        if (!requestHeader.isOffline()) {
            // 如果Consumer在线，而且这个topic没有被订阅，那么就跳过
            SubscriptionData findSubscriptionData = this.brokerController.getConsumerManager()
                .findSubscriptionData(requestHeader.getSrcGroup(), topic);
            if (this.brokerController.getConsumerManager()
                .findSubscriptionDataCount(requestHeader.getSrcGroup()) > 0
                    && findSubscriptionData == null) {
                log.warn("[cloneGroupOffset], the consumer group[{}], topic[{}] not exist",
                    requestHeader.getSrcGroup(), topic);
                continue;
            }
        }

        this.brokerController.getConsumerOffsetManager().cloneOffset(requestHeader.getSrcGroup(),
            requestHeader.getDestGroup(), requestHeader.getTopic());
    }

    response.setCode(ResponseCode.SUCCESS);
    response.setRemark(null);
    return response;
}
 

private RemotingCommand getConsumeStats(ChannelHandlerContext ctx, RemotingCommand request)
        throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    final GetConsumeStatsRequestHeader requestHeader = (GetConsumeStatsRequestHeader) request
        .decodeCommandCustomHeader(GetConsumeStatsRequestHeader.class);

    ConsumeStats consumeStats = new ConsumeStats();

    Set<String> topics = new HashSet<String>();
    if (UtilAll.isBlank(requestHeader.getTopic())) {
        topics = this.brokerController.getConsumerOffsetManager()
            .whichTopicByConsumer(requestHeader.getConsumerGroup());
    }
    else {
        topics.add(requestHeader.getTopic());
    }

    for (String topic : topics) {
        TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
        if (null == topicConfig) {
            log.warn("consumeStats, topic config not exist, {}", topic);
            continue;
        }

        /**
         * Consumer不在线的时候，也允许查询消费进度
         */
        {
            SubscriptionData findSubscriptionData = this.brokerController.getConsumerManager()
                .findSubscriptionData(requestHeader.getConsumerGroup(), topic);
            // 如果Consumer在线，而且这个topic没有被订阅，那么就跳过
            if (null == findSubscriptionData //
                    && this.brokerController.getConsumerManager()
                        .findSubscriptionDataCount(requestHeader.getConsumerGroup()) > 0) {
                log.warn("consumeStats, the consumer group[{}], topic[{}] not exist",
                    requestHeader.getConsumerGroup(), topic);
                continue;
            }
        }

        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().getMaxOffsetInQuque(topic, i);
            if (brokerOffset < 0)
                brokerOffset = 0;

            long consumerOffset = this.brokerController.getConsumerOffsetManager().queryOffset(//
                requestHeader.getConsumerGroup(), //
                topic, //
                i);
            if (consumerOffset < 0)
                consumerOffset = 0;

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

            // 查询消费者最后一条消息对应的时间戳
            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);
        }

        long consumeTps = (long) this.brokerController.getBrokerStatsManager()
            .tpsGroupGetNums(requestHeader.getConsumerGroup(), topic);

        consumeTps += consumeStats.getConsumeTps();
        consumeStats.setConsumeTps(consumeTps);
    }

    byte[] body = consumeStats.encode();
    response.setBody(body);
    response.setCode(ResponseCode.SUCCESS);
    response.setRemark(null);
    return response;
}