Java MQVersion类代码示例

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
/**
 * Start rocketmq broker service
 * @throws Exception
 */
private static void startBroker() throws Exception {

    System.setProperty(RemotingCommand.REMOTING_VERSION_KEY, Integer.toString(MQVersion.CURRENT_VERSION));

    BrokerConfig brokerConfig = new BrokerConfig();
    brokerConfig.setNamesrvAddr(nameServer);
    brokerConfig.setBrokerId(MixAll.MASTER_ID);
    NettyServerConfig nettyServerConfig = new NettyServerConfig();
    nettyServerConfig.setListenPort(10911);
    NettyClientConfig nettyClientConfig = new NettyClientConfig();
    MessageStoreConfig messageStoreConfig = new MessageStoreConfig();

    brokerController = new BrokerController(brokerConfig, nettyServerConfig, nettyClientConfig, messageStoreConfig);
    boolean initResult = brokerController.initialize();
    if (!initResult) {
        brokerController.shutdown();
        throw new Exception();
    }
    brokerController.start();
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
public void reportConsumerRunningInfo(final String consumerGroup) throws InterruptedException,
    MQBrokerException, RemotingException, MQClientException {
    ConsumerConnection cc = defaultMQAdminExt.examineConsumerConnectionInfo(consumerGroup);
    TreeMap<String, ConsumerRunningInfo> infoMap = new TreeMap<String, ConsumerRunningInfo>();
    for (Connection c : cc.getConnectionSet()) {
        String clientId = c.getClientId();

        if (c.getVersion() < MQVersion.Version.V3_1_8_SNAPSHOT.ordinal()) {
            continue;
        }

        try {
            ConsumerRunningInfo info =
                defaultMQAdminExt.getConsumerRunningInfo(consumerGroup, clientId, false);
            infoMap.put(clientId, info);
        } catch (Exception e) {
        }
    }

    if (!infoMap.isEmpty()) {
        this.monitorListener.reportConsumerRunningInfo(infoMap);
    }
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
public MQClientInstance(ClientConfig clientConfig, int instanceIndex, String clientId, RPCHook rpcHook) {
    this.clientConfig = clientConfig;
    this.instanceIndex = instanceIndex;
    this.nettyClientConfig = new NettyClientConfig();
    this.nettyClientConfig.setClientCallbackExecutorThreads(clientConfig.getClientCallbackExecutorThreads());
    this.clientRemotingProcessor = new ClientRemotingProcessor(this);
    this.mQClientAPIImpl = new MQClientAPIImpl(this.nettyClientConfig, this.clientRemotingProcessor, rpcHook, clientConfig);

    if (this.clientConfig.getNamesrvAddr() != null) {
        this.mQClientAPIImpl.updateNameServerAddressList(this.clientConfig.getNamesrvAddr());
        log.info("user specified name server address: {}", this.clientConfig.getNamesrvAddr());
    }

    this.clientId = clientId;

    this.mQAdminImpl = new MQAdminImpl(this);

    this.pullMessageService = new PullMessageService(this);

    this.rebalanceService = new RebalanceService(this);

    this.defaultMQProducer = new DefaultMQProducer(MixAll.CLIENT_INNER_PRODUCER_GROUP);
    this.defaultMQProducer.resetClientConfig(clientConfig);

    this.consumerStatsManager = new ConsumerStatsManager(this.scheduledExecutorService);

    log.info("created a new client Instance, FactoryIndex: {} ClinetID: {} {} {}, serializeType={}", //
        this.instanceIndex, //
        this.clientId, //
        this.clientConfig, //
        MQVersion.getVersionDesc(MQVersion.CURRENT_VERSION), RemotingCommand.getSerializeTypeConfigInThisServer());
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) throws SubCommandException {
    DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook);

    defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis()));

    try {
        defaultMQAdminExt.start();

        String group = commandLine.getOptionValue('g').trim();
        String topic = commandLine.getOptionValue('t').trim();

        ProducerConnection pc = defaultMQAdminExt.examineProducerConnectionInfo(group, topic);

        int i = 1;
        for (Connection conn : pc.getConnectionSet()) {
            System.out.printf("%04d  %-32s %-22s %-8s %s%n",
                i++,
                conn.getClientId(),
                conn.getClientAddr(),
                conn.getLanguage(),
                MQVersion.getVersionDesc(conn.getVersion())
            );
        }
    } catch (Exception e) {
        throw new SubCommandException(this.getClass().getSimpleName() + " command failed", e);
    } finally {
        defaultMQAdminExt.shutdown();
    }
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
static private void setHeaders(HttpURLConnection conn, List<String> headers, String encoding) {
    if (null != headers) {
        for (Iterator<String> iter = headers.iterator(); iter.hasNext(); ) {
            conn.addRequestProperty(iter.next(), iter.next());
        }
    }
    conn.addRequestProperty("Client-Version", MQVersion.getVersionDesc(MQVersion.CURRENT_VERSION));
    conn.addRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + encoding);

    String ts = String.valueOf(System.currentTimeMillis());
    conn.addRequestProperty("Metaq-Client-RequestTS", ts);
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) {
    DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook);

    defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis()));

    try {
        defaultMQAdminExt.start();

        String group = commandLine.getOptionValue('g').trim();
        String topic = commandLine.getOptionValue('t').trim();

        ProducerConnection pc = defaultMQAdminExt.examineProducerConnectionInfo(group, topic);

        int i = 1;
        for (Connection conn : pc.getConnectionSet()) {
            System.out.printf("%04d  %-32s %-22s %-8s %s%n",
                i++,
                conn.getClientId(),
                conn.getClientAddr(),
                conn.getLanguage(),
                MQVersion.getVersionDesc(conn.getVersion())
            );
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        defaultMQAdminExt.shutdown();
    }
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
public MQClientInstance(ClientConfig clientConfig, int instanceIndex, String clientId, RPCHook rpcHook) {
    this.clientConfig = clientConfig;
    this.instanceIndex = instanceIndex;
    this.nettyClientConfig = new NettyClientConfig();
    this.nettyClientConfig.setClientCallbackExecutorThreads(clientConfig.getClientCallbackExecutorThreads());
    this.nettyClientConfig.setUseTLS(clientConfig.isUseTLS());
    this.clientRemotingProcessor = new ClientRemotingProcessor(this);
    this.mQClientAPIImpl = new MQClientAPIImpl(this.nettyClientConfig, this.clientRemotingProcessor, rpcHook, clientConfig);

    if (this.clientConfig.getNamesrvAddr() != null) {
        this.mQClientAPIImpl.updateNameServerAddressList(this.clientConfig.getNamesrvAddr());
        log.info("user specified name server address: {}", this.clientConfig.getNamesrvAddr());
    }

    this.clientId = clientId;

    this.mQAdminImpl = new MQAdminImpl(this);

    this.pullMessageService = new PullMessageService(this);

    this.rebalanceService = new RebalanceService(this);

    this.defaultMQProducer = new DefaultMQProducer(MixAll.CLIENT_INNER_PRODUCER_GROUP);
    this.defaultMQProducer.resetClientConfig(clientConfig);

    this.consumerStatsManager = new ConsumerStatsManager(this.scheduledExecutorService);

    log.info("created a new client Instance, FactoryIndex: {} ClinetID: {} {} {}, serializeType={}",
        this.instanceIndex,
        this.clientId,
        this.clientConfig,
        MQVersion.getVersionDesc(MQVersion.CURRENT_VERSION), RemotingCommand.getSerializeTypeConfigInThisServer());
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
public PullResult pullKernelImpl(
    final MessageQueue mq,
    final String subExpression,
    final String expressionType,
    final long subVersion,
    final long offset,
    final int maxNums,
    final int sysFlag,
    final long commitOffset,
    final long brokerSuspendMaxTimeMillis,
    final long timeoutMillis,
    final CommunicationMode communicationMode,
    final PullCallback pullCallback
) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
    FindBrokerResult findBrokerResult =
        this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
            this.recalculatePullFromWhichNode(mq), false);
    if (null == findBrokerResult) {
        this.mQClientFactory.updateTopicRouteInfoFromNameServer(mq.getTopic());
        findBrokerResult =
            this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
                this.recalculatePullFromWhichNode(mq), false);
    }

    if (findBrokerResult != null) {
        {
            // check version
            if (!ExpressionType.isTagType(expressionType)
                && findBrokerResult.getBrokerVersion() < MQVersion.Version.V4_1_0_SNAPSHOT.ordinal()) {
                throw new MQClientException("The broker[" + mq.getBrokerName() + ", "
                    + findBrokerResult.getBrokerVersion() + "] does not upgrade to support for filter message by " + expressionType, null);
            }
        }
        int sysFlagInner = sysFlag;

        if (findBrokerResult.isSlave()) {
            sysFlagInner = PullSysFlag.clearCommitOffsetFlag(sysFlagInner);
        }

        PullMessageRequestHeader requestHeader = new PullMessageRequestHeader();
        requestHeader.setConsumerGroup(this.consumerGroup);
        requestHeader.setTopic(mq.getTopic());
        requestHeader.setQueueId(mq.getQueueId());
        requestHeader.setQueueOffset(offset);
        requestHeader.setMaxMsgNums(maxNums);
        requestHeader.setSysFlag(sysFlagInner);
        requestHeader.setCommitOffset(commitOffset);
        requestHeader.setSuspendTimeoutMillis(brokerSuspendMaxTimeMillis);
        requestHeader.setSubscription(subExpression);
        requestHeader.setSubVersion(subVersion);
        requestHeader.setExpressionType(expressionType);

        String brokerAddr = findBrokerResult.getBrokerAddr();
        if (PullSysFlag.hasClassFilterFlag(sysFlagInner)) {
            brokerAddr = computPullFromWhichFilterServer(mq.getTopic(), brokerAddr);
        }

        // 请求拉取
        PullResult pullResult = this.mQClientFactory.getMQClientAPIImpl().pullMessage(
            brokerAddr,
            requestHeader,
            timeoutMillis,
            communicationMode,
            pullCallback);

        return pullResult;
    }

    throw new MQClientException("The broker[" + mq.getBrokerName() + "] not exist", null);
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
private HashMap<String, String> prepareRuntimeInfo() {
    HashMap<String, String> runtimeInfo = this.brokerController.getMessageStore().getRuntimeInfo();
    runtimeInfo.put("brokerVersionDesc", MQVersion.getVersionDesc(MQVersion.CURRENT_VERSION));
    runtimeInfo.put("brokerVersion", String.valueOf(MQVersion.CURRENT_VERSION));

    runtimeInfo.put("msgPutTotalYesterdayMorning",
        String.valueOf(this.brokerController.getBrokerStats().getMsgPutTotalYesterdayMorning()));
    runtimeInfo.put("msgPutTotalTodayMorning", String.valueOf(this.brokerController.getBrokerStats().getMsgPutTotalTodayMorning()));
    runtimeInfo.put("msgPutTotalTodayNow", String.valueOf(this.brokerController.getBrokerStats().getMsgPutTotalTodayNow()));

    runtimeInfo.put("msgGetTotalYesterdayMorning",
        String.valueOf(this.brokerController.getBrokerStats().getMsgGetTotalYesterdayMorning()));
    runtimeInfo.put("msgGetTotalTodayMorning", String.valueOf(this.brokerController.getBrokerStats().getMsgGetTotalTodayMorning()));
    runtimeInfo.put("msgGetTotalTodayNow", String.valueOf(this.brokerController.getBrokerStats().getMsgGetTotalTodayNow()));

    runtimeInfo.put("sendThreadPoolQueueSize", String.valueOf(this.brokerController.getSendThreadPoolQueue().size()));

    runtimeInfo.put("sendThreadPoolQueueCapacity",
        String.valueOf(this.brokerController.getBrokerConfig().getSendThreadPoolQueueCapacity()));

    runtimeInfo.put("pullThreadPoolQueueSize", String.valueOf(this.brokerController.getPullThreadPoolQueue().size()));
    runtimeInfo.put("pullThreadPoolQueueCapacity",
        String.valueOf(this.brokerController.getBrokerConfig().getPullThreadPoolQueueCapacity()));

    runtimeInfo.put("dispatchBehindBytes", String.valueOf(this.brokerController.getMessageStore().dispatchBehindBytes()));
    runtimeInfo.put("pageCacheLockTimeMills", String.valueOf(this.brokerController.getMessageStore().lockTimeMills()));

    runtimeInfo.put("sendThreadPoolQueueHeadWaitTimeMills", String.valueOf(this.brokerController.headSlowTimeMills4SendThreadPoolQueue()));
    runtimeInfo.put("pullThreadPoolQueueHeadWaitTimeMills", String.valueOf(this.brokerController.headSlowTimeMills4PullThreadPoolQueue()));
    runtimeInfo.put("earliestMessageTimeStamp", String.valueOf(this.brokerController.getMessageStore().getEarliestMessageTime()));
    runtimeInfo.put("startAcceptSendRequestTimeStamp", String.valueOf(this.brokerController.getBrokerConfig().getStartAcceptSendRequestTimeStamp()));
    if (this.brokerController.getMessageStore() instanceof DefaultMessageStore) {
        DefaultMessageStore defaultMessageStore = (DefaultMessageStore) this.brokerController.getMessageStore();
        runtimeInfo.put("remainTransientStoreBufferNumbs", String.valueOf(defaultMessageStore.remainTransientStoreBufferNumbs()));
        if (defaultMessageStore.getMessageStoreConfig().isTransientStorePoolEnable()) {
            runtimeInfo.put("remainHowManyDataToCommit", MixAll.humanReadableByteCount(defaultMessageStore.getCommitLog().remainHowManyDataToCommit(), false));
        }
        runtimeInfo.put("remainHowManyDataToFlush", MixAll.humanReadableByteCount(defaultMessageStore.getCommitLog().remainHowManyDataToFlush(), false));
    }

    java.io.File commitLogDir = new java.io.File(this.brokerController.getMessageStoreConfig().getStorePathRootDir());
    if (commitLogDir.exists()) {
        runtimeInfo.put("commitLogDirCapacity", String.format("Total : %s, Free : %s.", MixAll.humanReadableByteCount(commitLogDir.getTotalSpace(), false), MixAll.humanReadableByteCount(commitLogDir.getFreeSpace(), false)));
    }

    return runtimeInfo;
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
private boolean handleRetryAndDLQ(SendMessageRequestHeader requestHeader, RemotingCommand response, RemotingCommand request,
    MessageExt msg, TopicConfig topicConfig) {
    String newTopic = requestHeader.getTopic();
    if (null != newTopic && newTopic.startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
        String groupName = newTopic.substring(MixAll.RETRY_GROUP_TOPIC_PREFIX.length());
        SubscriptionGroupConfig subscriptionGroupConfig =
            this.brokerController.getSubscriptionGroupManager().findSubscriptionGroupConfig(groupName);
        if (null == subscriptionGroupConfig) {
            response.setCode(ResponseCode.SUBSCRIPTION_GROUP_NOT_EXIST);
            response.setRemark(
                "subscription group not exist, " + groupName + " " + FAQUrl.suggestTodo(FAQUrl.SUBSCRIPTION_GROUP_NOT_EXIST));
            return false;
        }

        int maxReconsumeTimes = subscriptionGroupConfig.getRetryMaxTimes();
        if (request.getVersion() >= MQVersion.Version.V3_4_9.ordinal()) {
            maxReconsumeTimes = requestHeader.getMaxReconsumeTimes();
        }
        int reconsumeTimes = requestHeader.getReconsumeTimes() == null ? 0 : requestHeader.getReconsumeTimes();
        if (reconsumeTimes >= maxReconsumeTimes) {
            newTopic = MixAll.getDLQTopic(groupName);
            int queueIdInt = Math.abs(this.random.nextInt() % 99999999) % DLQ_NUMS_PER_GROUP;
            topicConfig = this.brokerController.getTopicConfigManager().createTopicInSendMessageBackMethod(newTopic, //
                DLQ_NUMS_PER_GROUP, //
                PermName.PERM_WRITE, 0
            );
            msg.setTopic(newTopic);
            msg.setQueueId(queueIdInt);
            if (null == topicConfig) {
                response.setCode(ResponseCode.SYSTEM_ERROR);
                response.setRemark("topic[" + newTopic + "] not exist");
                return false;
            }
        }
    }
    int sysFlag = requestHeader.getSysFlag();
    if (TopicFilterType.MULTI_TAG == topicConfig.getTopicFilterType()) {
        sysFlag |= MessageSysFlag.MULTI_TAGS_FLAG;
    }
    msg.setSysFlag(sysFlag);
    return true;
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    if (log.isDebugEnabled()) {
        log.debug("receive request, {} {} {}",
            request.getCode(),
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            request);
    }

    switch (request.getCode()) {
        case RequestCode.PUT_KV_CONFIG:
            return this.putKVConfig(ctx, request);
        case RequestCode.GET_KV_CONFIG:
            return this.getKVConfig(ctx, request);
        case RequestCode.DELETE_KV_CONFIG:
            return this.deleteKVConfig(ctx, request);
        case RequestCode.REGISTER_BROKER: // 注册borker信息
            Version brokerVersion = MQVersion.value2Version(request.getVersion());
            // 新版本Broker，支持Filter Server
            if (brokerVersion.ordinal() >= MQVersion.Version.V3_0_11.ordinal()) {
                return this.registerBrokerWithFilterServer(ctx, request);
            } else {
            	  // 低版本Broker，不支持Filter Server
                return this.registerBroker(ctx, request);
            }
        case RequestCode.UNREGISTER_BROKER: // 取消注册broker
            return this.unregisterBroker(ctx, request);
        case RequestCode.GET_ROUTEINTO_BY_TOPIC:
            return this.getRouteInfoByTopic(ctx, request); // 根据topic获取路由信息，在producer发送消息和consumer在pull消息的时候的时候会从nameServer 中获取
        case RequestCode.GET_BROKER_CLUSTER_INFO:
            return this.getBrokerClusterInfo(ctx, request);
        case RequestCode.WIPE_WRITE_PERM_OF_BROKER:
            return this.wipeWritePermOfBroker(ctx, request);
        case RequestCode.GET_ALL_TOPIC_LIST_FROM_NAMESERVER:
            return getAllTopicListFromNameserver(ctx, request);
        case RequestCode.DELETE_TOPIC_IN_NAMESRV:
            return deleteTopicInNamesrv(ctx, request);
        case RequestCode.GET_KVLIST_BY_NAMESPACE:
            return this.getKVListByNamespace(ctx, request);
        case RequestCode.GET_TOPICS_BY_CLUSTER:
            return this.getTopicsByCluster(ctx, request);
        case RequestCode.GET_SYSTEM_TOPIC_LIST_FROM_NS:
            return this.getSystemTopicListFromNs(ctx, request);
        case RequestCode.GET_UNIT_TOPIC_LIST:
            return this.getUnitTopicList(ctx, request);
        case RequestCode.GET_HAS_UNIT_SUB_TOPIC_LIST:
            return this.getHasUnitSubTopicList(ctx, request);
        case RequestCode.GET_HAS_UNIT_SUB_UNUNIT_TOPIC_LIST:
            return this.getHasUnitSubUnUnitTopicList(ctx, request);
        case RequestCode.UPDATE_NAMESRV_CONFIG:
            return this.updateConfig(ctx, request);
        case RequestCode.GET_NAMESRV_CONFIG:
            return this.getConfig(ctx, request);
        default:
            break;
    }
    return null;
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
public String versionDesc() {
    if (this.count != 0) {
        return MQVersion.getVersionDesc(this.version);
    }
    return "";
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) throws SubCommandException {
    DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook);

    defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis()));

    try {
        defaultMQAdminExt.start();

        String group = commandLine.getOptionValue('g').trim();

        ConsumerConnection cc = defaultMQAdminExt.examineConsumerConnectionInfo(group);

        int i = 1;
        for (Connection conn : cc.getConnectionSet()) {
            System.out.printf("%03d  %-32s %-22s %-8s %s%n",
                i++,
                conn.getClientId(),
                conn.getClientAddr(),
                conn.getLanguage(),
                MQVersion.getVersionDesc(conn.getVersion())
            );
        }

        System.out.printf("%nBelow is subscription:");
        Iterator<Entry<String, SubscriptionData>> it = cc.getSubscriptionTable().entrySet().iterator();
        i = 1;
        while (it.hasNext()) {
            Entry<String, SubscriptionData> entry = it.next();
            SubscriptionData sd = entry.getValue();
            System.out.printf("%03d  Topic: %-40s SubExpression: %s%n",
                i++,
                sd.getTopic(),
                sd.getSubString()
            );
        }

        System.out.printf("");
        System.out.printf("ConsumeType: %s%n", cc.getConsumeType());
        System.out.printf("MessageModel: %s%n", cc.getMessageModel());
        System.out.printf("ConsumeFromWhere: %s%n", cc.getConsumeFromWhere());
    } catch (Exception e) {
        throw new SubCommandException(this.getClass().getSimpleName() + " command failed", e);
    } finally {
        defaultMQAdminExt.shutdown();
    }
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    if (log.isDebugEnabled()) {
        log.debug("receive request, {} {} {}",
            request.getCode(),
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            request);
    }

    switch (request.getCode()) {
        case RequestCode.PUT_KV_CONFIG:
            return this.putKVConfig(ctx, request);
        case RequestCode.GET_KV_CONFIG:
            return this.getKVConfig(ctx, request);
        case RequestCode.DELETE_KV_CONFIG:
            return this.deleteKVConfig(ctx, request);
        case RequestCode.REGISTER_BROKER:
            Version brokerVersion = MQVersion.value2Version(request.getVersion());
            if (brokerVersion.ordinal() >= MQVersion.Version.V3_0_11.ordinal()) {
                return this.registerBrokerWithFilterServer(ctx, request);
            } else {
                return this.registerBroker(ctx, request);
            }
        case RequestCode.UNREGISTER_BROKER:
            return this.unregisterBroker(ctx, request);
        case RequestCode.GET_ROUTEINTO_BY_TOPIC:
            return this.getRouteInfoByTopic(ctx, request);
        case RequestCode.GET_BROKER_CLUSTER_INFO:
            return this.getBrokerClusterInfo(ctx, request);
        case RequestCode.WIPE_WRITE_PERM_OF_BROKER:
            return this.wipeWritePermOfBroker(ctx, request);
        case RequestCode.GET_ALL_TOPIC_LIST_FROM_NAMESERVER:
            return getAllTopicListFromNameserver(ctx, request);
        case RequestCode.DELETE_TOPIC_IN_NAMESRV:
            return deleteTopicInNamesrv(ctx, request);
        case RequestCode.GET_KVLIST_BY_NAMESPACE:
            return this.getKVListByNamespace(ctx, request);
        case RequestCode.GET_TOPICS_BY_CLUSTER:
            return this.getTopicsByCluster(ctx, request);
        case RequestCode.GET_SYSTEM_TOPIC_LIST_FROM_NS:
            return this.getSystemTopicListFromNs(ctx, request);
        case RequestCode.GET_UNIT_TOPIC_LIST:
            return this.getUnitTopicList(ctx, request);
        case RequestCode.GET_HAS_UNIT_SUB_TOPIC_LIST:
            return this.getHasUnitSubTopicList(ctx, request);
        case RequestCode.GET_HAS_UNIT_SUB_UNUNIT_TOPIC_LIST:
            return this.getHasUnitSubUnUnitTopicList(ctx, request);
        case RequestCode.UPDATE_NAMESRV_CONFIG:
            return this.updateConfig(ctx, request);
        case RequestCode.GET_NAMESRV_CONFIG:
            return this.getConfig(ctx, request);
        default:
            break;
    }
    return null;
}
 

import org.apache.rocketmq.common.MQVersion; //导入依赖的package包/类
@Override
public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) {
    DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook);

    defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis()));

    try {
        defaultMQAdminExt.start();

        String group = commandLine.getOptionValue('g').trim();

        ConsumerConnection cc = defaultMQAdminExt.examineConsumerConnectionInfo(group);

        int i = 1;
        for (Connection conn : cc.getConnectionSet()) {
            System.out.printf("%03d  %-32s %-22s %-8s %s%n",
                i++,
                conn.getClientId(),
                conn.getClientAddr(),
                conn.getLanguage(),
                MQVersion.getVersionDesc(conn.getVersion())
            );
        }

        System.out.printf("%nBelow is subscription:");
        Iterator<Entry<String, SubscriptionData>> it = cc.getSubscriptionTable().entrySet().iterator();
        i = 1;
        while (it.hasNext()) {
            Entry<String, SubscriptionData> entry = it.next();
            SubscriptionData sd = entry.getValue();
            System.out.printf("%03d  Topic: %-40s SubExpression: %s%n",
                i++,
                sd.getTopic(),
                sd.getSubString()
            );
        }

        System.out.printf("");
        System.out.printf("ConsumeType: %s%n", cc.getConsumeType());
        System.out.printf("MessageModel: %s%n", cc.getMessageModel());
        System.out.printf("ConsumeFromWhere: %s%n", cc.getConsumeFromWhere());
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        defaultMQAdminExt.shutdown();
    }
}