Examples with ConsumeMessageContext org.apache.rocketmq.broker.mqtrace.ConsumeMessageContext used on opensource projects

Example 6 with ConsumeMessageContext

use of org.apache.rocketmq.broker.mqtrace.ConsumeMessageContext in project rocketmq-rocketmq-all-4.1.0-incubating by lirenzuo.

the class SendMessageProcessor method consumerSendMsgBack.

// Broker Consumer将处理不了的消息发回服务器
private RemotingCommand consumerSendMsgBack(final ChannelHandlerContext ctx, final RemotingCommand request) throws RemotingCommandException {
    final RemotingCommand response = RemotingCommand.createResponseCommand(null);
    final ConsumerSendMsgBackRequestHeader requestHeader = (ConsumerSendMsgBackRequestHeader) request.decodeCommandCustomHeader(ConsumerSendMsgBackRequestHeader.class);
    // 消息轨迹：记录消费失败的消息
    if (this.hasConsumeMessageHook() && !UtilAll.isBlank(requestHeader.getOriginMsgId())) {
        // 执行hook
        ConsumeMessageContext context = new ConsumeMessageContext();
        context.setConsumerGroup(requestHeader.getGroup());
        context.setTopic(requestHeader.getOriginTopic());
        context.setCommercialRcvStats(BrokerStatsManager.StatsType.SEND_BACK);
        context.setCommercialRcvTimes(1);
        context.setCommercialOwner(request.getExtFields().get(BrokerStatsManager.COMMERCIAL_OWNER));
        this.executeConsumeMessageHookAfter(context);
    }
    // 确保订阅组存在
    SubscriptionGroupConfig subscriptionGroupConfig = this.brokerController.getSubscriptionGroupManager().findSubscriptionGroupConfig(requestHeader.getGroup());
    if (null == subscriptionGroupConfig) {
        response.setCode(ResponseCode.SUBSCRIPTION_GROUP_NOT_EXIST);
        response.setRemark("subscription group not exist, " + requestHeader.getGroup() + " " + FAQUrl.suggestTodo(FAQUrl.SUBSCRIPTION_GROUP_NOT_EXIST));
        return response;
    }
    // 检查Broker权限
    if (!PermName.isWriteable(this.brokerController.getBrokerConfig().getBrokerPermission())) {
        response.setCode(ResponseCode.NO_PERMISSION);
        response.setRemark("the broker[" + this.brokerController.getBrokerConfig().getBrokerIP1() + "] sending message is forbidden");
        return response;
    }
    // 如果重试队列数目为0，则直接丢弃消息
    if (subscriptionGroupConfig.getRetryQueueNums() <= 0) {
        response.setCode(ResponseCode.SUCCESS);
        response.setRemark(null);
        return response;
    }
    String newTopic = MixAll.getRetryTopic(requestHeader.getGroup());
    int queueIdInt = Math.abs(this.random.nextInt() % 99999999) % subscriptionGroupConfig.getRetryQueueNums();
    // 如果是单元化模式，则对 topic 进行设置
    int topicSysFlag = 0;
    if (requestHeader.isUnitMode()) {
        topicSysFlag = TopicSysFlag.buildSysFlag(false, true);
    }
    // 检查topic是否存在
    TopicConfig topicConfig = // 
    this.brokerController.getTopicConfigManager().createTopicInSendMessageBackMethod(// 
    newTopic, // 
    subscriptionGroupConfig.getRetryQueueNums(), PermName.PERM_WRITE | PermName.PERM_READ, topicSysFlag);
    if (null == topicConfig) {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark("topic[" + newTopic + "] not exist");
        return response;
    }
    // 检查topic权限
    if (!PermName.isWriteable(topicConfig.getPerm())) {
        response.setCode(ResponseCode.NO_PERMISSION);
        response.setRemark(String.format("the topic[%s] sending message is forbidden", newTopic));
        return response;
    }
    // 查询消息，这里如果堆积消息过多，会访问磁盘
    // 另外如果频繁调用，是否会引起gc问题，需要关注 TODO
    MessageExt msgExt = this.brokerController.getMessageStore().lookMessageByOffset(requestHeader.getOffset());
    if (null == msgExt) {
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark("look message by offset failed, " + requestHeader.getOffset());
        return response;
    }
    // 构造消息
    final String retryTopic = msgExt.getProperty(MessageConst.PROPERTY_RETRY_TOPIC);
    if (null == retryTopic) {
        MessageAccessor.putProperty(msgExt, MessageConst.PROPERTY_RETRY_TOPIC, msgExt.getTopic());
    }
    msgExt.setWaitStoreMsgOK(false);
    // 客户端自动决定定时级别
    int delayLevel = requestHeader.getDelayLevel();
    int maxReconsumeTimes = subscriptionGroupConfig.getRetryMaxTimes();
    if (request.getVersion() >= MQVersion.Version.V3_4_9.ordinal()) {
        maxReconsumeTimes = requestHeader.getMaxReconsumeTimes();
    }
    // 死信消息处理
    if (// 
    msgExt.getReconsumeTimes() >= maxReconsumeTimes || delayLevel < 0) {
        newTopic = MixAll.getDLQTopic(requestHeader.getGroup());
        queueIdInt = Math.abs(this.random.nextInt() % 99999999) % DLQ_NUMS_PER_GROUP;
        topicConfig = // 
        this.brokerController.getTopicConfigManager().createTopicInSendMessageBackMethod(// 
        newTopic, // 
        DLQ_NUMS_PER_GROUP, // 死信消息不需要同步，不需要较正。
        PermName.PERM_WRITE, // 死信消息不需要同步，不需要较正。
        0);
        if (null == topicConfig) {
            response.setCode(ResponseCode.SYSTEM_ERROR);
            response.setRemark("topic[" + newTopic + "] not exist");
            return response;
        }
    } else // 继续重试
    {
        if (0 == delayLevel) {
            delayLevel = 3 + msgExt.getReconsumeTimes();
        }
        msgExt.setDelayTimeLevel(delayLevel);
    }
    // 构建 MessageExtBrokerInner
    MessageExtBrokerInner msgInner = new MessageExtBrokerInner();
    msgInner.setTopic(newTopic);
    msgInner.setBody(msgExt.getBody());
    msgInner.setFlag(msgExt.getFlag());
    MessageAccessor.setProperties(msgInner, msgExt.getProperties());
    msgInner.setPropertiesString(MessageDecoder.messageProperties2String(msgExt.getProperties()));
    msgInner.setTagsCode(MessageExtBrokerInner.tagsString2tagsCode(null, msgExt.getTags()));
    msgInner.setQueueId(queueIdInt);
    msgInner.setSysFlag(msgExt.getSysFlag());
    msgInner.setBornTimestamp(msgExt.getBornTimestamp());
    msgInner.setBornHost(msgExt.getBornHost());
    msgInner.setStoreHost(this.getStoreHost());
    msgInner.setReconsumeTimes(msgExt.getReconsumeTimes() + 1);
    // 保存源生消息的 msgId
    String originMsgId = MessageAccessor.getOriginMessageId(msgExt);
    MessageAccessor.setOriginMessageId(msgInner, UtilAll.isBlank(originMsgId) ? msgExt.getMsgId() : originMsgId);
    PutMessageResult putMessageResult = this.brokerController.getMessageStore().putMessage(msgInner);
    if (putMessageResult != null) {
        switch(putMessageResult.getPutMessageStatus()) {
            case PUT_OK:
                // 统计失败重试的Topic
                String backTopic = msgExt.getTopic();
                String correctTopic = msgExt.getProperty(MessageConst.PROPERTY_RETRY_TOPIC);
                if (correctTopic != null) {
                    backTopic = correctTopic;
                }
                this.brokerController.getBrokerStatsManager().incSendBackNums(requestHeader.getGroup(), backTopic);
                response.setCode(ResponseCode.SUCCESS);
                response.setRemark(null);
                return response;
            default:
                break;
        }
        response.setCode(ResponseCode.SYSTEM_ERROR);
        response.setRemark(putMessageResult.getPutMessageStatus().name());
        return response;
    }
    response.setCode(ResponseCode.SYSTEM_ERROR);
    response.setRemark("putMessageResult is null");
    return response;
}