【mq】从零开始实现 mq-11-消费者消息回执添加分组信息 pull message ack groupName

public List<ChannelGroupNameDto> getPushSubscribeList(MqMessage mqMessage) {     final String topicName = mqMessage.getTopic();     Set<ConsumerSubscribeBo> set = pushSubscribeMap.get(topicName);     if(CollectionUtil.isEmpty(set)) {         return Collections.emptyList();     }      //2. 获取匹配的 tag 列表     final List<String> tagNameList = mqMessage.getTags();     Map<String, List<ConsumerSubscribeBo>> groupMap = new HashMap<>();     for(ConsumerSubscribeBo bo : set) {         String tagRegex = bo.getTagRegex();         if(RegexUtil.hasMatch(tagNameList, tagRegex)) {             String groupName = bo.getGroupName();             MapUtil.putToListMap(groupMap, groupName, bo);         }     }      //3. 按照 groupName 分组之后，每一组只随机返回一个。最好应该调整为以 shardingkey 选择     final String shardingKey = mqMessage.getShardingKey();     List<ChannelGroupNameDto> channelGroupNameList = new ArrayList<>();     for(Map.Entry<String, List<ConsumerSubscribeBo>> entry : groupMap.entrySet()) {         List<ConsumerSubscribeBo> list = entry.getValue();         ConsumerSubscribeBo bo = RandomUtils.loadBalance(loadBalance, list, shardingKey);         final String channelId = bo.getChannelId();         BrokerServiceEntryChannel entryChannel = registerMap.get(channelId);         if(entryChannel == null) {             log.warn("channelId: {} 对应的通道信息为空", channelId);             continue;         }         final String groupName = entry.getKey();         ChannelGroupNameDto channelGroupNameDto = ChannelGroupNameDto.of(groupName,                 entryChannel.getChannel());         channelGroupNameList.add(channelGroupNameDto);     }     return channelGroupNameList; }

ChannelGroupNameDto 的定义如下：

public class ChannelGroupNameDto {      /**      * 分组名称      */     private String consumerGroupName;      /**      * 通道      */     private Channel channel;      //get & set }

消息主动推送

我们调整一下消息推送，每次推送完成，根据 groupName 进行状态的更新：

for(final ChannelGroupNameDto channelGroupNameDto : channelList) {     final Channel channel = channelGroupNameDto.getChannel();     final String consumerGroupName =channelGroupNameDto.getConsumerGroupName();      try {         // 更新状态为消费处理中         mqBrokerPersist.updateStatus(messageId, consumerGroupName, MessageStatusConst.TO_CONSUMER_PROCESS);          String channelId = ChannelUtil.getChannelId(channel);         log.info("开始处理 channelId: {}", channelId);         //1. 调用         mqMessage.setMethodType(MethodType.B_MESSAGE_PUSH);         // 重试推送         MqConsumerResultResp resultResp = Retryer.<MqConsumerResultResp>newInstance()                 .maxAttempt(pushMaxAttempt)                 .callable(new Callable<MqConsumerResultResp>() {                     @Override                     public MqConsumerResultResp call() throws Exception {                         MqConsumerResultResp resp = callServer(channel, mqMessage,                                 MqConsumerResultResp.class, invokeService, responseTime);                         // 失败校验                         if(resp == null                             || !ConsumerStatus.SUCCESS.getCode()                                 .equals(resp.getConsumerStatus())) {                             throw new MqException(BrokerRespCode.MSG_PUSH_FAILED);                         }                         return resp;                     }                 }).retryCall();          //2. 更新状态         //2.1 处理成功，取 push 消费状态         if(MqCommonRespCode.SUCCESS.getCode().equals(resultResp.getRespCode())) {             mqBrokerPersist.updateStatus(messageId, consumerGroupName, resultResp.getConsumerStatus());         } else {             // 2.2 处理失败             log.error("消费失败：{}", JSON.toJSON(resultResp));             mqBrokerPersist.updateStatus(messageId, consumerGroupName, MessageStatusConst.TO_CONSUMER_FAILED);         }          log.info("完成处理 channelId: {}", channelId);     } catch (Exception exception) {         log.error("处理异常");         mqBrokerPersist.updateStatus(messageId, consumerGroupName, MessageStatusConst.TO_CONSUMER_FAILED);     }  }

消息消费者状态回执

ps: 这里 V0.1.1 分支漏写了，不过后面 v0.1.2 分支修正了。

public MqCommonResp consumerStatusAck(String messageId, ConsumerStatus consumerStatus) {     final MqConsumerUpdateStatusReq req = new MqConsumerUpdateStatusReq();     req.setMessageId(messageId);     req.setMessageStatus(consumerStatus.getCode());     final String traceId = IdHelper.uuid32();     req.setTraceId(traceId);     req.setMethodType(MethodType.C_CONSUMER_STATUS);      // 添加 groupName     req.setConsumerGroupName(groupName);      // 重试     return Retryer.<MqCommonResp>newInstance()             .maxAttempt(consumerStatusMaxAttempt)             .callable(new Callable<MqCommonResp>() {                 @Override                 public MqCommonResp call() throws Exception {                     Channel channel = getChannel(null);                     MqCommonResp resp = callServer(channel, req, MqCommonResp.class);                     if(!MqCommonRespCode.SUCCESS.getCode().equals(resp.getRespCode())) {                         throw new MqException(ConsumerRespCode.CONSUMER_STATUS_ACK_FAILED);                     }                     return resp;                 }             }).retryCall(); }

消息状态回执时， req.setConsumerGroupName(groupName); 添加 groupName 信息。