Examples with FileRegion io.netty.channel.FileRegion used on opensource projects

Example 16 with FileRegion

use of io.netty.channel.FileRegion in project netty by netty.

the class SocketFileRegionTest method testFileRegionCountLargerThenFile.

public void testFileRegionCountLargerThenFile(ServerBootstrap sb, Bootstrap cb) throws Throwable {
    File file = PlatformDependent.createTempFile("netty-", ".tmp", null);
    file.deleteOnExit();
    final FileOutputStream out = new FileOutputStream(file);
    out.write(data);
    out.close();
    sb.childHandler(new SimpleChannelInboundHandler<ByteBuf>() {

        @Override
        protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) {
        // Just drop the message.
        }
    });
    cb.handler(new ChannelInboundHandlerAdapter());
    Channel sc = sb.bind().sync().channel();
    Channel cc = cb.connect(sc.localAddress()).sync().channel();
    // Request file region which is bigger then the underlying file.
    FileRegion region = new DefaultFileRegion(new RandomAccessFile(file, "r").getChannel(), 0, data.length + 1024);
    assertThat(cc.writeAndFlush(region).await().cause(), CoreMatchers.<Throwable>instanceOf(IOException.class));
    cc.close().sync();
    sc.close().sync();
}

Example 17 with FileRegion

use of io.netty.channel.FileRegion in project netty by netty.

the class AbstractOioByteChannel method doWrite.

@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
    for (; ; ) {
        Object msg = in.current();
        if (msg == null) {
            // nothing left to write
            break;
        }
        if (msg instanceof ByteBuf) {
            ByteBuf buf = (ByteBuf) msg;
            int readableBytes = buf.readableBytes();
            while (readableBytes > 0) {
                doWriteBytes(buf);
                int newReadableBytes = buf.readableBytes();
                in.progress(readableBytes - newReadableBytes);
                readableBytes = newReadableBytes;
            }
            in.remove();
        } else if (msg instanceof FileRegion) {
            FileRegion region = (FileRegion) msg;
            long transferred = region.transferred();
            doWriteFileRegion(region);
            in.progress(region.transferred() - transferred);
            in.remove();
        } else {
            in.remove(new UnsupportedOperationException("unsupported message type: " + StringUtil.simpleClassName(msg)));
        }
    }
}

Example 18 with FileRegion

use of io.netty.channel.FileRegion in project crate by crate.

the class HttpBlobHandler method transferFile.

private ChannelFuture transferFile(final String digest, RandomAccessFile raf, long position, long count) throws IOException {
    Channel channel = ctx.channel();
    final ChannelFuture fileFuture;
    final ChannelFuture endMarkerFuture;
    if (sslEnabled) {
        HttpChunkedInput httpChunkedInput = new HttpChunkedInput(new ChunkedFile(raf, 0, count, HTTPS_CHUNK_SIZE));
        fileFuture = channel.writeAndFlush(httpChunkedInput, ctx.newProgressivePromise());
        // HttpChunkedInput also writes the end marker (LastHttpContent) for us.
        endMarkerFuture = fileFuture;
    } else {
        FileRegion region = new DefaultFileRegion(raf.getChannel(), position, count);
        fileFuture = channel.write(region, ctx.newProgressivePromise());
        // Flushes and sets the ending marker
        endMarkerFuture = channel.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
    }
    fileFuture.addListener(new ChannelProgressiveFutureListener() {

        @Override
        public void operationProgressed(ChannelProgressiveFuture future, long progress, long total) throws Exception {
            LOGGER.debug("transferFile digest={} progress={} total={}", digest, progress, total);
        }

        @Override
        public void operationComplete(ChannelProgressiveFuture future) throws Exception {
            LOGGER.trace("transferFile operationComplete");
        }
    });
    return endMarkerFuture;
}

Example 19 with FileRegion

use of io.netty.channel.FileRegion in project rocketmq-rocketmq-all-4.1.0-incubating by lirenzuo.

the class PullMessageProcessor method processRequest.

private RemotingCommand processRequest(final Channel channel, RemotingCommand request, boolean brokerAllowSuspend) throws RemotingCommandException {
    RemotingCommand response = RemotingCommand.createResponseCommand(PullMessageResponseHeader.class);
    final PullMessageResponseHeader responseHeader = (PullMessageResponseHeader) response.readCustomHeader();
    final PullMessageRequestHeader requestHeader = (PullMessageRequestHeader) request.decodeCommandCustomHeader(PullMessageRequestHeader.class);
    // 由于使用sendfile，所以必须要设置
    response.setOpaque(request.getOpaque());
    if (LOG.isDebugEnabled()) {
        LOG.debug("receive PullMessage request command, {}", request);
    }
    // 检查Broker权限
    if (!PermName.isReadable(this.brokerController.getBrokerConfig().getBrokerPermission())) {
        response.setCode(ResponseCode.NO_PERMISSION);
        response.setRemark(String.format("the broker[%s] pulling message is forbidden", this.brokerController.getBrokerConfig().getBrokerIP1()));
        return response;
    }
    // 确保订阅组存在
    SubscriptionGroupConfig subscriptionGroupConfig = this.brokerController.getSubscriptionGroupManager().findSubscriptionGroupConfig(requestHeader.getConsumerGroup());
    if (null == subscriptionGroupConfig) {
        response.setCode(ResponseCode.SUBSCRIPTION_GROUP_NOT_EXIST);
        response.setRemark(String.format("subscription group [%s] does not exist, %s", requestHeader.getConsumerGroup(), FAQUrl.suggestTodo(FAQUrl.SUBSCRIPTION_GROUP_NOT_EXIST)));
        return response;
    }
    // 这个订阅组是否可以消费消息
    if (!subscriptionGroupConfig.isConsumeEnable()) {
        response.setCode(ResponseCode.NO_PERMISSION);
        response.setRemark("subscription group no permission, " + requestHeader.getConsumerGroup());
        return response;
    }
    final boolean hasSuspendFlag = PullSysFlag.hasSuspendFlag(requestHeader.getSysFlag());
    final boolean hasCommitOffsetFlag = PullSysFlag.hasCommitOffsetFlag(requestHeader.getSysFlag());
    final boolean hasSubscriptionFlag = PullSysFlag.hasSubscriptionFlag(requestHeader.getSysFlag());
    final long suspendTimeoutMillisLong = hasSuspendFlag ? requestHeader.getSuspendTimeoutMillis() : 0;
    // 检查topic是否存在
    TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(requestHeader.getTopic());
    if (null == topicConfig) {
        LOG.error("The topic {} not exist, consumer: {} ", requestHeader.getTopic(), RemotingHelper.parseChannelRemoteAddr(channel));
        response.setCode(ResponseCode.TOPIC_NOT_EXIST);
        response.setRemark(String.format("topic[%s] not exist, apply first please! %s", requestHeader.getTopic(), FAQUrl.suggestTodo(FAQUrl.APPLY_TOPIC_URL)));
        return response;
    }
    // 检查topic权限
    if (!PermName.isReadable(topicConfig.getPerm())) {
        response.setCode(ResponseCode.NO_PERMISSION);
        response.setRemark("the topic[" + requestHeader.getTopic() + "] pulling message is forbidden");
        return response;
    }
    // 检查队列有效性
    if (requestHeader.getQueueId() < 0 || requestHeader.getQueueId() >= topicConfig.getReadQueueNums()) {
        String errorInfo = String.format("queueId[%d] is illegal, topic:[%s] topicConfig.readQueueNums:[%d] consumer:[%s]", requestHeader.getQueueId(), requestHeader.getTopic(), topicConfig.getReadQueueNums(), channel.remoteAddress());
        LOG.warn(errorInfo);
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark(errorInfo);
        return response;
    }
    // 订阅关系处理
    SubscriptionData subscriptionData = null;
    ConsumerFilterData consumerFilterData = null;
    if (hasSubscriptionFlag) {
        try {
            subscriptionData = FilterAPI.build(requestHeader.getTopic(), requestHeader.getSubscription(), requestHeader.getExpressionType());
            if (!ExpressionType.isTagType(subscriptionData.getExpressionType())) {
                consumerFilterData = ConsumerFilterManager.build(requestHeader.getTopic(), requestHeader.getConsumerGroup(), requestHeader.getSubscription(), requestHeader.getExpressionType(), requestHeader.getSubVersion());
                assert consumerFilterData != null;
            }
        } catch (Exception e) {
            // 
            LOG.warn(// 
            "Parse the consumer's subscription[{}] failed, group: {}", // 
            requestHeader.getSubscription(), requestHeader.getConsumerGroup());
            response.setCode(ResponseCode.SUBSCRIPTION_PARSE_FAILED);
            response.setRemark("parse the consumer's subscription failed");
            return response;
        }
    } else {
        ConsumerGroupInfo consumerGroupInfo = this.brokerController.getConsumerManager().getConsumerGroupInfo(requestHeader.getConsumerGroup());
        if (null == consumerGroupInfo) {
            LOG.warn("The consumer's group info not exist, group: {}", requestHeader.getConsumerGroup());
            response.setCode(ResponseCode.SUBSCRIPTION_NOT_EXIST);
            response.setRemark("the consumer's group info not exist" + FAQUrl.suggestTodo(FAQUrl.SAME_GROUP_DIFFERENT_TOPIC));
            return response;
        }
        if (// 
        !subscriptionGroupConfig.isConsumeBroadcastEnable() && consumerGroupInfo.getMessageModel() == MessageModel.BROADCASTING) {
            response.setCode(ResponseCode.NO_PERMISSION);
            response.setRemark("the consumer group[" + requestHeader.getConsumerGroup() + "] can not consume by broadcast way");
            return response;
        }
        subscriptionData = consumerGroupInfo.findSubscriptionData(requestHeader.getTopic());
        if (null == subscriptionData) {
            LOG.warn("The consumer's subscription not exist, group: {}, topic:{}", requestHeader.getConsumerGroup(), requestHeader.getTopic());
            response.setCode(ResponseCode.SUBSCRIPTION_NOT_EXIST);
            response.setRemark("the consumer's subscription not exist" + FAQUrl.suggestTodo(FAQUrl.SAME_GROUP_DIFFERENT_TOPIC));
            return response;
        }
        // 判断Broker的订阅关系版本是否最新
        if (subscriptionData.getSubVersion() < requestHeader.getSubVersion()) {
            LOG.warn("The broker's subscription is not latest, group: {} {}", requestHeader.getConsumerGroup(), subscriptionData.getSubString());
            response.setCode(ResponseCode.SUBSCRIPTION_NOT_LATEST);
            response.setRemark("the consumer's subscription not latest");
            return response;
        }
        if (!ExpressionType.isTagType(subscriptionData.getExpressionType())) {
            consumerFilterData = this.brokerController.getConsumerFilterManager().get(requestHeader.getTopic(), requestHeader.getConsumerGroup());
            if (consumerFilterData == null) {
                response.setCode(ResponseCode.FILTER_DATA_NOT_EXIST);
                response.setRemark("The broker's consumer filter data is not exist!Your expression may be wrong!");
                return response;
            }
            if (consumerFilterData.getClientVersion() < requestHeader.getSubVersion()) {
                LOG.warn("The broker's consumer filter data is not latest, group: {}, topic: {}, serverV: {}, clientV: {}", requestHeader.getConsumerGroup(), requestHeader.getTopic(), consumerFilterData.getClientVersion(), requestHeader.getSubVersion());
                response.setCode(ResponseCode.FILTER_DATA_NOT_LATEST);
                response.setRemark("the consumer's consumer filter data not latest");
                return response;
            }
        }
    }
    if (!ExpressionType.isTagType(subscriptionData.getExpressionType()) && !this.brokerController.getBrokerConfig().isEnablePropertyFilter()) {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark("The broker does not support consumer to filter message by " + subscriptionData.getExpressionType());
        return response;
    }
    MessageFilter messageFilter;
    if (this.brokerController.getBrokerConfig().isFilterSupportRetry()) {
        messageFilter = new ExpressionForRetryMessageFilter(subscriptionData, consumerFilterData, this.brokerController.getConsumerFilterManager());
    } else {
        messageFilter = new ExpressionMessageFilter(subscriptionData, consumerFilterData, this.brokerController.getConsumerFilterManager());
    }
    // 这个地方体现了零拷贝。消息落地磁盘的时候，是从file map出来的内存buffer，此时消费消息的时候无需再读取文件，而是直接读取map出来的buffer！
    final GetMessageResult getMessageResult = this.brokerController.getMessageStore().getMessage(requestHeader.getConsumerGroup(), requestHeader.getTopic(), requestHeader.getQueueId(), requestHeader.getQueueOffset(), requestHeader.getMaxMsgNums(), messageFilter);
    if (getMessageResult != null) {
        response.setRemark(getMessageResult.getStatus().name());
        responseHeader.setNextBeginOffset(getMessageResult.getNextBeginOffset());
        responseHeader.setMinOffset(getMessageResult.getMinOffset());
        responseHeader.setMaxOffset(getMessageResult.getMaxOffset());
        // 消费较慢，重定向到另外一台机器
        if (getMessageResult.isSuggestPullingFromSlave()) {
            responseHeader.setSuggestWhichBrokerId(subscriptionGroupConfig.getWhichBrokerWhenConsumeSlowly());
        } else // 消费正常，按照订阅组配置重定向
        {
            responseHeader.setSuggestWhichBrokerId(MixAll.MASTER_ID);
        }
        switch(this.brokerController.getMessageStoreConfig().getBrokerRole()) {
            case ASYNC_MASTER:
            case SYNC_MASTER:
                break;
            case SLAVE:
                if (!this.brokerController.getBrokerConfig().isSlaveReadEnable()) {
                    response.setCode(ResponseCode.PULL_RETRY_IMMEDIATELY);
                    responseHeader.setSuggestWhichBrokerId(MixAll.MASTER_ID);
                }
                break;
        }
        if (this.brokerController.getBrokerConfig().isSlaveReadEnable()) {
            // consume too slow ,redirect to another machine
            if (getMessageResult.isSuggestPullingFromSlave()) {
                responseHeader.setSuggestWhichBrokerId(subscriptionGroupConfig.getWhichBrokerWhenConsumeSlowly());
            } else // consume ok
            {
                responseHeader.setSuggestWhichBrokerId(subscriptionGroupConfig.getBrokerId());
            }
        } else {
            responseHeader.setSuggestWhichBrokerId(MixAll.MASTER_ID);
        }
        switch(getMessageResult.getStatus()) {
            case FOUND:
                response.setCode(ResponseCode.SUCCESS);
                break;
            case MESSAGE_WAS_REMOVING:
                response.setCode(ResponseCode.PULL_RETRY_IMMEDIATELY);
                break;
            // 这两个返回值都表示服务器暂时没有这个队列，应该立刻将客户端Offset重置为0
            case NO_MATCHED_LOGIC_QUEUE:
            case NO_MESSAGE_IN_QUEUE:
                if (0 != requestHeader.getQueueOffset()) {
                    response.setCode(ResponseCode.PULL_OFFSET_MOVED);
                    // XXX: warn and notify me
                    // 
                    LOG.info(// 
                    "the broker store no queue data, fix the request offset {} to {}, Topic: {} QueueId: {} Consumer Group: {}", // 
                    requestHeader.getQueueOffset(), // 
                    getMessageResult.getNextBeginOffset(), // 
                    requestHeader.getTopic(), // 
                    requestHeader.getQueueId(), // 
                    requestHeader.getConsumerGroup());
                } else {
                    response.setCode(ResponseCode.PULL_NOT_FOUND);
                }
                break;
            case NO_MATCHED_MESSAGE:
                response.setCode(ResponseCode.PULL_RETRY_IMMEDIATELY);
                break;
            case OFFSET_FOUND_NULL:
                response.setCode(ResponseCode.PULL_NOT_FOUND);
                break;
            case OFFSET_OVERFLOW_BADLY:
                response.setCode(ResponseCode.PULL_OFFSET_MOVED);
                // XXX: warn and notify me
                LOG.info("The request offset:{} over flow badly, broker max offset:{} , consumer: {}", requestHeader.getQueueOffset(), getMessageResult.getMaxOffset(), channel.remoteAddress());
                break;
            case OFFSET_OVERFLOW_ONE:
                response.setCode(ResponseCode.PULL_NOT_FOUND);
                break;
            case OFFSET_TOO_SMALL:
                response.setCode(ResponseCode.PULL_OFFSET_MOVED);
                LOG.info("The request offset is too small. group={}, topic={}, requestOffset={}, brokerMinOffset={}, clientIp={}", requestHeader.getConsumerGroup(), requestHeader.getTopic(), requestHeader.getQueueOffset(), getMessageResult.getMinOffset(), channel.remoteAddress());
                break;
            default:
                assert false;
                break;
        }
        // 消息轨迹：记录客户端拉取的消息记录（不表示消费成功）
        if (this.hasConsumeMessageHook()) {
            // 执行hook
            ConsumeMessageContext context = new ConsumeMessageContext();
            context.setConsumerGroup(requestHeader.getConsumerGroup());
            context.setTopic(requestHeader.getTopic());
            context.setQueueId(requestHeader.getQueueId());
            String owner = request.getExtFields().get(BrokerStatsManager.COMMERCIAL_OWNER);
            switch(response.getCode()) {
                case ResponseCode.SUCCESS:
                    int commercialBaseCount = brokerController.getBrokerConfig().getCommercialBaseCount();
                    int incValue = getMessageResult.getMsgCount4Commercial() * commercialBaseCount;
                    context.setCommercialRcvStats(BrokerStatsManager.StatsType.RCV_SUCCESS);
                    context.setCommercialRcvTimes(incValue);
                    context.setCommercialRcvSize(getMessageResult.getBufferTotalSize());
                    context.setCommercialOwner(owner);
                    break;
                case ResponseCode.PULL_NOT_FOUND:
                    if (!brokerAllowSuspend) {
                        context.setCommercialRcvStats(BrokerStatsManager.StatsType.RCV_EPOLLS);
                        context.setCommercialRcvTimes(1);
                        context.setCommercialOwner(owner);
                    }
                    break;
                case ResponseCode.PULL_RETRY_IMMEDIATELY:
                case ResponseCode.PULL_OFFSET_MOVED:
                    context.setCommercialRcvStats(BrokerStatsManager.StatsType.RCV_EPOLLS);
                    context.setCommercialRcvTimes(1);
                    context.setCommercialOwner(owner);
                    break;
                default:
                    assert false;
                    break;
            }
            this.executeConsumeMessageHookBefore(context);
        }
        switch(response.getCode()) {
            case ResponseCode.SUCCESS:
                // 统计
                this.brokerController.getBrokerStatsManager().incGroupGetNums(requestHeader.getConsumerGroup(), requestHeader.getTopic(), getMessageResult.getMessageCount());
                this.brokerController.getBrokerStatsManager().incGroupGetSize(requestHeader.getConsumerGroup(), requestHeader.getTopic(), getMessageResult.getBufferTotalSize());
                this.brokerController.getBrokerStatsManager().incBrokerGetNums(getMessageResult.getMessageCount());
                if (this.brokerController.getBrokerConfig().isTransferMsgByHeap()) {
                    final long beginTimeMills = this.brokerController.getMessageStore().now();
                    final byte[] r = this.readGetMessageResult(getMessageResult, requestHeader.getConsumerGroup(), requestHeader.getTopic(), requestHeader.getQueueId());
                    this.brokerController.getBrokerStatsManager().incGroupGetLatency(requestHeader.getConsumerGroup(), requestHeader.getTopic(), requestHeader.getQueueId(), (int) (this.brokerController.getMessageStore().now() - beginTimeMills));
                    response.setBody(r);
                } else {
                    try {
                        FileRegion fileRegion = new ManyMessageTransfer(response.encodeHeader(getMessageResult.getBufferTotalSize()), getMessageResult);
                        channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {

                            @Override
                            public void operationComplete(ChannelFuture future) throws Exception {
                                getMessageResult.release();
                                if (!future.isSuccess()) {
                                    LOG.error("Fail to transfer messages from page cache to {}", channel.remoteAddress(), future.cause());
                                }
                            }
                        });
                    } catch (Throwable e) {
                        LOG.error("Error occurred when transferring messages from page cache", e);
                        getMessageResult.release();
                    }
                    response = null;
                }
                break;
            case ResponseCode.PULL_NOT_FOUND:
                // 长轮询
                if (brokerAllowSuspend && hasSuspendFlag) {
                    long pollingTimeMills = suspendTimeoutMillisLong;
                    if (!this.brokerController.getBrokerConfig().isLongPollingEnable()) {
                        pollingTimeMills = this.brokerController.getBrokerConfig().getShortPollingTimeMills();
                    }
                    String topic = requestHeader.getTopic();
                    long offset = requestHeader.getQueueOffset();
                    int queueId = requestHeader.getQueueId();
                    PullRequest pullRequest = new PullRequest(request, channel, pollingTimeMills, this.brokerController.getMessageStore().now(), offset, subscriptionData, messageFilter);
                    this.brokerController.getPullRequestHoldService().suspendPullRequest(topic, queueId, pullRequest);
                    response = null;
                    break;
                }
            // 向Consumer返回应答
            case ResponseCode.PULL_RETRY_IMMEDIATELY:
                break;
            case ResponseCode.PULL_OFFSET_MOVED:
                if (this.brokerController.getMessageStoreConfig().getBrokerRole() != BrokerRole.SLAVE || this.brokerController.getMessageStoreConfig().isOffsetCheckInSlave()) {
                    MessageQueue mq = new MessageQueue();
                    mq.setTopic(requestHeader.getTopic());
                    mq.setQueueId(requestHeader.getQueueId());
                    mq.setBrokerName(this.brokerController.getBrokerConfig().getBrokerName());
                    OffsetMovedEvent event = new OffsetMovedEvent();
                    event.setConsumerGroup(requestHeader.getConsumerGroup());
                    event.setMessageQueue(mq);
                    event.setOffsetRequest(requestHeader.getQueueOffset());
                    event.setOffsetNew(getMessageResult.getNextBeginOffset());
                    this.generateOffsetMovedEvent(event);
                    LOG.warn("PULL_OFFSET_MOVED:correction offset. topic={}, groupId={}, requestOffset={}, newOffset={}, suggestBrokerId={}", requestHeader.getTopic(), requestHeader.getConsumerGroup(), event.getOffsetRequest(), event.getOffsetNew(), responseHeader.getSuggestWhichBrokerId());
                } else {
                    responseHeader.setSuggestWhichBrokerId(subscriptionGroupConfig.getBrokerId());
                    response.setCode(ResponseCode.PULL_RETRY_IMMEDIATELY);
                    LOG.warn("PULL_OFFSET_MOVED:none correction. topic={}, groupId={}, requestOffset={}, suggestBrokerId={}", requestHeader.getTopic(), requestHeader.getConsumerGroup(), requestHeader.getQueueOffset(), responseHeader.getSuggestWhichBrokerId());
                }
                break;
            default:
                assert false;
        }
    } else {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark("store getMessage return null");
    }
    // 存储Consumer消费进度
    // 说明是首次调用，相对于长轮询通知
    boolean storeOffsetEnable = brokerAllowSuspend;
    // 说明Consumer设置了标志位
    storeOffsetEnable = storeOffsetEnable && hasCommitOffsetFlag;
    storeOffsetEnable = // 只有Master支持存储offset
    storeOffsetEnable && this.brokerController.getMessageStoreConfig().getBrokerRole() != BrokerRole.SLAVE;
    if (storeOffsetEnable) {
        this.brokerController.getConsumerOffsetManager().commitOffset(RemotingHelper.parseChannelRemoteAddr(channel), requestHeader.getConsumerGroup(), requestHeader.getTopic(), requestHeader.getQueueId(), requestHeader.getCommitOffset());
    }
    return response;
}

Example 20 with FileRegion

use of io.netty.channel.FileRegion in project rocketmq-rocketmq-all-4.1.0-incubating by lirenzuo.

the class QueryMessageProcessor method queryMessage.

// 查询消息
public RemotingCommand queryMessage(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(QueryMessageResponseHeader.class);
    final QueryMessageResponseHeader responseHeader = (QueryMessageResponseHeader) response.readCustomHeader();
    final QueryMessageRequestHeader requestHeader = (QueryMessageRequestHeader) request.decodeCommandCustomHeader(QueryMessageRequestHeader.class);
    response.setOpaque(request.getOpaque());
    String isUniqueKey = request.getExtFields().get(MixAll.UNIQUE_MSG_QUERY_FLAG);
    if (isUniqueKey != null && isUniqueKey.equals("true")) {
        requestHeader.setMaxNum(this.brokerController.getMessageStoreConfig().getDefaultQueryMaxNum());
    }
    final QueryMessageResult queryMessageResult = this.brokerController.getMessageStore().queryMessage(requestHeader.getTopic(), requestHeader.getKey(), requestHeader.getMaxNum(), requestHeader.getBeginTimestamp(), requestHeader.getEndTimestamp());
    assert queryMessageResult != null;
    responseHeader.setIndexLastUpdatePhyoffset(queryMessageResult.getIndexLastUpdatePhyoffset());
    responseHeader.setIndexLastUpdateTimestamp(queryMessageResult.getIndexLastUpdateTimestamp());
    // 说明找到消息
    if (queryMessageResult.getBufferTotalSize() > 0) {
        response.setCode(ResponseCode.SUCCESS);
        response.setRemark(null);
        try {
            FileRegion fileRegion = new QueryMessageTransfer(response.encodeHeader(queryMessageResult.getBufferTotalSize()), queryMessageResult);
            ctx.channel().writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {

                @Override
                public void operationComplete(ChannelFuture future) throws Exception {
                    queryMessageResult.release();
                    if (!future.isSuccess()) {
                        log.error("transfer query message by page cache failed, ", future.cause());
                    }
                }
            });
        } catch (Throwable e) {
            log.error("", e);
            queryMessageResult.release();
        }
        return null;
    }
    response.setCode(ResponseCode.QUERY_NOT_FOUND);
    response.setRemark("can not find message, maybe time range not correct");
    return response;
}