org.apache.rocketmq.remoting.common.RemotingHelper Java Examples

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

    try {
        boolean ok = this.filtersrvController.getFilterClassManager().registerFilterClass(requestHeader.getConsumerGroup(),
            requestHeader.getTopic(),
            requestHeader.getClassName(),
            requestHeader.getClassCRC(),
            request.getBody());
        if (!ok) {
            throw new Exception("registerFilterClass error");
        }
    } catch (Exception e) {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark(RemotingHelper.exceptionSimpleDesc(e));
        return response;
    }

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

@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
    if (evt instanceof IdleStateEvent) {
    	/**
         *IdleStateEvent事件，在指定时间没有进行读写，会进行回调
         */
        IdleStateEvent event = (IdleStateEvent) evt;
        if (event.state().equals(IdleState.ALL_IDLE)) {
            final String remoteAddress = RemotingHelper.parseChannelRemoteAddr(ctx.channel());
            log.warn("NETTY SERVER PIPELINE: IDLE exception [{}]", remoteAddress);
            RemotingUtil.closeChannel(ctx.channel());  //关闭channel
            if (NettyRemotingServer.this.channelEventListener != null) {
                NettyRemotingServer.this
                    .putNettyEvent(new NettyEvent(NettyEventType.IDLE, remoteAddress, ctx.channel()));
            }
        }
    }

    ctx.fireUserEventTriggered(evt);
}
 

@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
    if (evt instanceof IdleStateEvent) {
        IdleStateEvent event = (IdleStateEvent) evt;
        if (event.state().equals(IdleState.ALL_IDLE)) {
            final String remoteAddress = RemotingHelper.parseChannelRemoteAddr(ctx.channel());
            log.warn("NETTY CLIENT PIPELINE: IDLE exception [{}]", remoteAddress);
            closeChannel(ctx.channel());
            if (NettyRemotingClient.this.channelEventListener != null) {
                NettyRemotingClient.this
                    .putNettyEvent(new NettyEvent(NettyEventType.IDLE, remoteAddress, ctx.channel()));
            }
        }
    }

    ctx.fireUserEventTriggered(evt);
}
 

public static void main(String[] args) throws MQClientException, InterruptedException {

        DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");

        producer.start();

        for (int i = 0; i < 128; i++)
            try {
                {
                    Message msg = new Message("TopicTest",
                        "TagA",
                        "OrderID188",
                        "Hello world".getBytes(RemotingHelper.DEFAULT_CHARSET));
                    SendResult sendResult = producer.send(msg);
                    System.out.printf("%s%n", sendResult);
                }

            } catch (Exception e) {
                e.printStackTrace();
            }

        producer.shutdown();
    }
 

public static void main(String[] args) throws MQClientException, InterruptedException {
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    producer.start();

    try {
        for (int i = 0; i < 6000000; i++) {
            Message msg = new Message("TopicFilter7",
                "TagA",
                "OrderID001",
                "Hello world".getBytes(RemotingHelper.DEFAULT_CHARSET));

            msg.putUserProperty("SequenceId", String.valueOf(i));
            SendResult sendResult = producer.send(msg);
            System.out.printf("%s%n", sendResult);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    producer.shutdown();
}
 

/**
 * Process response from remote peer to the previous issued requests.
 *
 * @param ctx channel handler context.
 * @param cmd response command instance.
 */
public void processResponseCommand(ChannelHandlerContext ctx, RemotingCommand cmd) {
    final int opaque = cmd.getOpaque();
    final ResponseFuture responseFuture = responseTable.get(opaque);
    if (responseFuture != null) {
        responseFuture.setResponseCommand(cmd);

        responseTable.remove(opaque);

        if (responseFuture.getInvokeCallback() != null) {
            executeInvokeCallback(responseFuture);
        } else {
            responseFuture.putResponse(cmd);
            responseFuture.release();
        }
    } else {
        log.warn("receive response, but not matched any request, " + RemotingHelper.parseChannelRemoteAddr(ctx.channel()));
        log.warn(cmd.toString());
    }
}
 

public static void main(String[] args) throws MQClientException, InterruptedException {
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    producer.start();

    for (int i = 0; i < 1; i++)
        try {
            {
                Message msg = new Message("TopicTest1",
                    "TagA",
                    "key113",
                    "Hello world".getBytes(RemotingHelper.DEFAULT_CHARSET));
                SendResult sendResult = producer.send(msg);
                System.out.printf("%s%n", sendResult);

                QueryResult queryMessage =
                    producer.queryMessage("TopicTest1", "key113", 10, 0, System.currentTimeMillis());
                for (MessageExt m : queryMessage.getMessageList()) {
                    System.out.printf("%s%n", m);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    producer.shutdown();
}
 

public static String jstack(Map<Thread, StackTraceElement[]> map) {
    StringBuilder result = new StringBuilder();
    try {
        Iterator<Map.Entry<Thread, StackTraceElement[]>> ite = map.entrySet().iterator();
        while (ite.hasNext()) {
            Map.Entry<Thread, StackTraceElement[]> entry = ite.next();
            StackTraceElement[] elements = entry.getValue();
            Thread thread = entry.getKey();
            if (elements != null && elements.length > 0) {
                String threadName = entry.getKey().getName();
                result.append(String.format("%-40sTID: %d STATE: %s%n", threadName, thread.getId(), thread.getState()));
                for (StackTraceElement el : elements) {
                    result.append(String.format("%-40s%s%n", threadName, el.toString()));
                }
                result.append("\n");
            }
        }
    } catch (Throwable e) {
        result.append(RemotingHelper.exceptionSimpleDesc(e));
    }

    return result.toString();
}
 

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

    try {
        boolean ok = this.filtersrvController.getFilterClassManager().registerFilterClass(requestHeader.getConsumerGroup(),
            requestHeader.getTopic(),
            requestHeader.getClassName(),
            requestHeader.getClassCRC(),
            request.getBody());
        if (!ok) {
            throw new Exception("registerFilterClass error");
        }
    } catch (Exception e) {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark(RemotingHelper.exceptionSimpleDesc(e));
        return response;
    }

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

@Override
public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand request) throws Exception {
    if (log.isDebugEnabled()) {
        log.debug("receive request, {} {} {}",
            request.getCode(),
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            request);
    }

    switch (request.getCode()) {
        case RequestCode.REGISTER_MESSAGE_FILTER_CLASS:
            return registerMessageFilterClass(ctx, request);
        case RequestCode.PULL_MESSAGE:
            return pullMessageForward(ctx, request);
    }

    return null;
}
 

public static String jstack(Map<Thread, StackTraceElement[]> map) {
    StringBuilder result = new StringBuilder();
    try {
        Iterator<Map.Entry<Thread, StackTraceElement[]>> ite = map.entrySet().iterator();
        while (ite.hasNext()) {
            Map.Entry<Thread, StackTraceElement[]> entry = ite.next();
            StackTraceElement[] elements = entry.getValue();
            Thread thread = entry.getKey();
            if (elements != null && elements.length > 0) {
                String threadName = entry.getKey().getName();
                result.append(String.format("%-40sTID: %d STATE: %s%n", threadName, thread.getId(), thread.getState()));
                for (StackTraceElement el : elements) {
                    result.append(String.format("%-40s%s%n", threadName, el.toString()));
                }
                result.append("\n");
            }
        }
    } catch (Throwable e) {
        result.append(RemotingHelper.exceptionSimpleDesc(e));
    }

    return result.toString();
}
 

public RemotingCommand checkTransactionState(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    final CheckTransactionStateRequestHeader requestHeader =
        (CheckTransactionStateRequestHeader) request.decodeCommandCustomHeader(CheckTransactionStateRequestHeader.class);
    final ByteBuffer byteBuffer = ByteBuffer.wrap(request.getBody());
    final MessageExt messageExt = MessageDecoder.decode(byteBuffer);
    if (messageExt != null) {
        final String group = messageExt.getProperty(MessageConst.PROPERTY_PRODUCER_GROUP);
        if (group != null) {
            MQProducerInner producer = this.mqClientFactory.selectProducer(group);
            if (producer != null) {
                final String addr = RemotingHelper.parseChannelRemoteAddr(ctx.channel());
                producer.checkTransactionState(addr, messageExt, requestHeader);
            } else {
                log.debug("checkTransactionState, pick producer by group[{}] failed", group);
            }
        } else {
            log.warn("checkTransactionState, pick producer group failed");
        }
    } else {
        log.warn("checkTransactionState, decode message failed");
    }

    return null;
}
 

@Override
public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand request) throws Exception {
    if (log.isDebugEnabled()) {
        log.debug("receive request, {} {} {}",
            request.getCode(),
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            request);
    }

    switch (request.getCode()) {
        case RequestCode.REGISTER_MESSAGE_FILTER_CLASS:
            return registerMessageFilterClass(ctx, request);
        case RequestCode.PULL_MESSAGE:
            return pullMessageForward(ctx, request);
    }

    return null;
}
 

private RemotingCommand wipeWritePermOfBroker(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(WipeWritePermOfBrokerResponseHeader.class);
    final WipeWritePermOfBrokerResponseHeader responseHeader = (WipeWritePermOfBrokerResponseHeader)response.readCustomHeader();
    final WipeWritePermOfBrokerRequestHeader requestHeader =
        (WipeWritePermOfBrokerRequestHeader)request.decodeCommandCustomHeader(WipeWritePermOfBrokerRequestHeader.class);

    int wipeTopicCnt = this.namesrvController.getRouteInfoManager().wipeWritePermOfBrokerByLock(requestHeader.getBrokerName());

    log.info("wipe write perm of broker[{}], client: {}, {}",
        requestHeader.getBrokerName(),
        RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
        wipeTopicCnt);

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

private RemotingCommand wipeWritePermOfBroker(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(WipeWritePermOfBrokerResponseHeader.class);
    final WipeWritePermOfBrokerResponseHeader responseHeader = (WipeWritePermOfBrokerResponseHeader) response.readCustomHeader();
    final WipeWritePermOfBrokerRequestHeader requestHeader =
        (WipeWritePermOfBrokerRequestHeader) request.decodeCommandCustomHeader(WipeWritePermOfBrokerRequestHeader.class);

    int wipeTopicCnt = this.namesrvController.getRouteInfoManager().wipeWritePermOfBrokerByLock(requestHeader.getBrokerName());

    log.info("wipe write perm of broker[{}], client: {}, {}",
        requestHeader.getBrokerName(),
        RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
        wipeTopicCnt);

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

/**
 * Process response from remote peer to the previous issued requests.
 *
 * @param ctx channel handler context.
 * @param cmd response command instance.
 * 处理响应的方式，NettyClient用于处理这个。
 */
public void processResponseCommand(ChannelHandlerContext ctx, RemotingCommand cmd) {
    final int opaque = cmd.getOpaque();
    //获取responseFulture
    final ResponseFuture responseFuture = responseTable.get(opaque);
    if (responseFuture != null) {
        responseFuture.setResponseCommand(cmd);
        //从response表里移除
        responseTable.remove(opaque);

        //异步请求
        if (responseFuture.getInvokeCallback() != null) {
            //执行异步callBack
            executeInvokeCallback(responseFuture);
            //同步请求
        } else {
            //在responseFulture里加入response
            responseFuture.putResponse(cmd);
            //释放
            responseFuture.release();
        }
    } else {
        log.warn("receive response, but not matched any request, " + RemotingHelper.parseChannelRemoteAddr(ctx.channel()));
        log.warn(cmd.toString());
    }
}
 

@Override
public void connect(ChannelHandlerContext ctx, SocketAddress remoteAddress, SocketAddress localAddress,
    ChannelPromise promise) throws Exception {
    final String local = localAddress == null ? "UNKNOWN" : RemotingHelper.parseSocketAddressAddr(localAddress);
    final String remote = remoteAddress == null ? "UNKNOWN" : RemotingHelper.parseSocketAddressAddr(remoteAddress);
    log.info("NETTY CLIENT PIPELINE: CONNECT  {} => {}", local, remote);

    super.connect(ctx, remoteAddress, localAddress, promise);

    if (NettyRemotingClient.this.channelEventListener != null) {
        NettyRemotingClient.this.putNettyEvent(new NettyEvent(NettyEventType.CONNECT, remote, ctx.channel()));
    }
}
 

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

    ProducerConnection bodydata = new ProducerConnection();
    HashMap<Channel, ClientChannelInfo> channelInfoHashMap =
        this.brokerController.getProducerManager().getGroupChannelTable().get(requestHeader.getProducerGroup());
    if (channelInfoHashMap != null) {
        Iterator<Map.Entry<Channel, ClientChannelInfo>> it = channelInfoHashMap.entrySet().iterator();
        while (it.hasNext()) {
            ClientChannelInfo info = it.next().getValue();
            Connection connection = new Connection();
            connection.setClientId(info.getClientId());
            connection.setLanguage(info.getLanguage());
            connection.setVersion(info.getVersion());
            connection.setClientAddr(RemotingHelper.parseChannelRemoteAddr(info.getChannel()));

            bodydata.getConnectionSet().add(connection);
        }

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

    response.setCode(ResponseCode.SYSTEM_ERROR);
    response.setRemark("the producer group[" + requestHeader.getProducerGroup() + "] not exist");
    return response;
}
 

/**
 * 执行oneWay，也就是发过去就不管了
 * @param channel channel
 * @param request request
 * @param timeoutMillis 超时时间
 * @throws InterruptedException ;
 * @throws RemotingTooMuchRequestException ;
 * @throws RemotingTimeoutException ;
 * @throws RemotingSendRequestException ;
 */
public void invokeOnewayImpl(final Channel channel, final RemotingCommand request, final long timeoutMillis)
    throws InterruptedException, RemotingTooMuchRequestException, RemotingTimeoutException, RemotingSendRequestException {

    //标记请求是oneWay类型的
    request.markOnewayRPC();
    //信号量限流
    boolean acquired = this.semaphoreOneway.tryAcquire(timeoutMillis, TimeUnit.MILLISECONDS);
    if (acquired) {
        final SemaphoreReleaseOnlyOnce once = new SemaphoreReleaseOnlyOnce(this.semaphoreOneway);
        try {
            channel.writeAndFlush(request).addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture f) throws Exception {
                    once.release();
                    if (!f.isSuccess()) {
                        log.warn("send a request command to channel <" + channel.remoteAddress() + "> failed.");
                    }
                }
            });
        } catch (Exception e) {
            once.release();
            log.warn("write send a request command to channel <" + channel.remoteAddress() + "> failed.");
            throw new RemotingSendRequestException(RemotingHelper.parseChannelRemoteAddr(channel), e);
        }
    } else {
        if (timeoutMillis <= 0) {
            throw new RemotingTooMuchRequestException("invokeOnewayImpl invoke too fast");
        } else {
            String info = String.format(
                "invokeOnewayImpl tryAcquire semaphore timeout, %dms, waiting thread nums: %d semaphoreAsyncValue: %d",
                timeoutMillis,
                this.semaphoreOneway.getQueueLength(),
                this.semaphoreOneway.availablePermits()
            );
            log.warn(info);
            throw new RemotingTimeoutException(info);
        }
    }
}
 

private RemotingCommand updateAndCreateTopic(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    final CreateTopicRequestHeader requestHeader =
        (CreateTopicRequestHeader) request.decodeCommandCustomHeader(CreateTopicRequestHeader.class);
    log.info("updateAndCreateTopic called by {}", RemotingHelper.parseChannelRemoteAddr(ctx.channel()));

    if (requestHeader.getTopic().equals(this.brokerController.getBrokerConfig().getBrokerClusterName())) {
        String errorMsg = "the topic[" + requestHeader.getTopic() + "] is conflict with system reserved words.";
        log.warn(errorMsg);
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark(errorMsg);
        return response;
    }

    try {
        response.setCode(ResponseCode.SUCCESS);
        response.setOpaque(request.getOpaque());
        response.markResponseType();
        response.setRemark(null);
        ctx.writeAndFlush(response);
    } catch (Exception e) {
        log.error("Failed to produce a proper response", e);
    }

    TopicConfig topicConfig = new TopicConfig(requestHeader.getTopic());
    topicConfig.setReadQueueNums(requestHeader.getReadQueueNums());
    topicConfig.setWriteQueueNums(requestHeader.getWriteQueueNums());
    topicConfig.setTopicFilterType(requestHeader.getTopicFilterTypeEnum());
    topicConfig.setPerm(requestHeader.getPerm());
    topicConfig.setTopicSysFlag(requestHeader.getTopicSysFlag() == null ? 0 : requestHeader.getTopicSysFlag());

    this.brokerController.getTopicConfigManager().updateTopicConfig(topicConfig);
    this.brokerController.registerBrokerAll(false, true);

    return null;
}
 

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    final String remoteAddress = RemotingHelper.parseChannelRemoteAddr(ctx.channel());
    log.warn("NETTY CLIENT PIPELINE: exceptionCaught {}", remoteAddress);
    log.warn("NETTY CLIENT PIPELINE: exceptionCaught exception.", cause);
    closeChannel(ctx.channel());
    if (NettyRemotingClient.this.channelEventListener != null) {
        NettyRemotingClient.this.putNettyEvent(new NettyEvent(NettyEventType.EXCEPTION, remoteAddress, ctx.channel()));
    }
}
 

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);
    }
}
 

@Override
public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
    final String remoteAddress = RemotingHelper.parseChannelRemoteAddr(ctx.channel());
    log.info("NETTY CLIENT PIPELINE: CLOSE {}", remoteAddress);
    closeChannel(ctx.channel());
    super.close(ctx, promise);

    if (NettyRemotingClient.this.channelEventListener != null) {
        NettyRemotingClient.this.putNettyEvent(new NettyEvent(NettyEventType.CLOSE, remoteAddress.toString(), ctx.channel()));
    }
}
 

public RemotingCommand notifyConsumerIdsChanged(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    try {
        final NotifyConsumerIdsChangedRequestHeader requestHeader =
            (NotifyConsumerIdsChangedRequestHeader) request.decodeCommandCustomHeader(NotifyConsumerIdsChangedRequestHeader.class);
        log.info("receive broker's notification[{}], the consumer group: {} changed, rebalance immediately",
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            requestHeader.getConsumerGroup());
        this.mqClientFactory.rebalanceImmediately();
    } catch (Exception e) {
        log.error("notifyConsumerIdsChanged exception", RemotingHelper.exceptionSimpleDesc(e));
    }
    return null;
}
 

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);
    }
}
 

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

        log.info("deleteSubscriptionGroup called by {}", RemotingHelper.parseChannelRemoteAddr(ctx.channel()));

//        =》
        this.brokerController.getSubscriptionGroupManager().deleteSubscriptionGroupConfig(requestHeader.getGroupName());

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

public static void main(String[] args) throws MQClientException, InterruptedException {
    CommandLine commandLine = buildCommandline(args);
    if (commandLine != null) {
        String group = commandLine.getOptionValue('g');
        String topic = commandLine.getOptionValue('t');
        String tags = commandLine.getOptionValue('a');
        String keys = commandLine.getOptionValue('k');
        String msgCount = commandLine.getOptionValue('c');

        DefaultMQProducer producer = new DefaultMQProducer(group);
        producer.setInstanceName(Long.toString(System.currentTimeMillis()));

        producer.start();

        for (int i = 0; i < Integer.parseInt(msgCount); i++) {
            try {
                Message msg = new Message(
                    topic,
                    tags,
                    keys,
                    ("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET));
                SendResult sendResult = producer.send(msg);
                System.out.printf("%-8d %s%n", i, sendResult);
            } catch (Exception e) {
                e.printStackTrace();
                Thread.sleep(1000);
            }
        }

        producer.shutdown();
    }
}
 

/**
 * 扫描不活跃的channel
 */
public void scanNotActiveChannel() {
    try {
        if (this.groupChannelLock.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
            try {
                for (final Map.Entry<String, HashMap<Channel, ClientChannelInfo>> entry : this.groupChannelTable
                    .entrySet()) {
                    final String group = entry.getKey();
                    final HashMap<Channel, ClientChannelInfo> chlMap = entry.getValue();

                    Iterator<Entry<Channel, ClientChannelInfo>> it = chlMap.entrySet().iterator();
                    while (it.hasNext()) {
                        Entry<Channel, ClientChannelInfo> item = it.next();
                        // final Integer id = item.getKey();
                        final ClientChannelInfo info = item.getValue();

                        long diff = System.currentTimeMillis() - info.getLastUpdateTimestamp();
                        if (diff > CHANNEL_EXPIRED_TIMEOUT) {
                            it.remove();
                            log.warn(
                                "SCAN: remove expired channel[{}] from ProducerManager groupChannelTable, producer group name: {}",
                                RemotingHelper.parseChannelRemoteAddr(info.getChannel()), group);
                            RemotingUtil.closeChannel(info.getChannel());
                        }
                    }
                }
            } finally {
                this.groupChannelLock.unlock();
            }
        } else {
            log.warn("ProducerManager scanNotActiveChannel lock timeout");
        }
    } catch (InterruptedException e) {
        log.error("", e);
    }
}
 

public RemotingCommand resetOffset(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    final ResetOffsetRequestHeader requestHeader =
        (ResetOffsetRequestHeader) request.decodeCommandCustomHeader(ResetOffsetRequestHeader.class);
    log.info("invoke reset offset operation from broker. brokerAddr={}, topic={}, group={}, timestamp={}",
        RemotingHelper.parseChannelRemoteAddr(ctx.channel()), requestHeader.getTopic(), requestHeader.getGroup(),
        requestHeader.getTimestamp());
    Map<MessageQueue, Long> offsetTable = new HashMap<MessageQueue, Long>();
    if (request.getBody() != null) {
        ResetOffsetBody body = ResetOffsetBody.decode(request.getBody(), ResetOffsetBody.class);
        offsetTable = body.getOffsetTable();
    }
    this.mqClientFactory.resetOffset(requestHeader.getTopic(), requestHeader.getGroup(), offsetTable);
    return null;
}
 

public RemotingCommand notifyConsumerIdsChanged(ChannelHandlerContext ctx,
    RemotingCommand request) throws RemotingCommandException {
    try {
        final NotifyConsumerIdsChangedRequestHeader requestHeader =
            (NotifyConsumerIdsChangedRequestHeader) request.decodeCommandCustomHeader(NotifyConsumerIdsChangedRequestHeader.class);
        log.info("receive broker's notification[{}], the consumer group: {} changed, rebalance immediately",
            RemotingHelper.parseChannelRemoteAddr(ctx.channel()),
            requestHeader.getConsumerGroup());
        this.mqClientFactory.rebalanceImmediately();
    } catch (Exception e) {
        log.error("notifyConsumerIdsChanged exception", RemotingHelper.exceptionSimpleDesc(e));
    }
    return null;
}