{"id":2164,"date":"2023-04-02T13:38:25","date_gmt":"2023-04-02T05:38:25","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=2164"},"modified":"2023-04-05T13:14:20","modified_gmt":"2023-04-05T05:14:20","slug":"rocketmq-retry-mechanism","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/04\/02\/rocketmq-retry-mechanism\/","title":{"rendered":"RocketMQ\u8be6\u89e3\u2014\u2014RocketMQ\u7684\u91cd\u8bd5\u673a\u5236"},"content":{"rendered":"

MQ\u7684\u91cd\u8bd5\u673a\u5236<\/h2>\n

\u7531\u4e8eMQ\u7ecf\u5e38\u5904\u4e8e\u590d\u6742\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u8003\u8651\u7f51\u7edc\u6ce2\u52a8\u3001\u670d\u52a1\u5b95\u673a\u3001\u7a0b\u5e8f\u5f02\u5e38\u56e0\u7d20\uff0c\u5f88\u6709\u53ef\u80fd\u51fa\u73b0\u6d88\u606f\u53d1\u9001\u6216\u8005\u6d88\u8d39\u5931\u8d25\u7684\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u6d88\u606f\u7684\u91cd\u8bd5\u5c31\u662f\u6240\u6709MQ\u4e2d\u95f4\u4ef6\u5fc5\u987b\u8003\u8651\u5230\u7684\u4e00\u4e2a\u5173\u952e\u70b9\u3002\u5982\u679c\u6ca1\u6709\u6d88\u606f\u91cd\u8bd5\uff0c\u5c31\u53ef\u80fd\u4ea7\u751f\u6d88\u606f\u4e22\u5931\u7684\u95ee\u9898\uff0c\u53ef\u80fd\u5bf9\u7cfb\u7edf\u4ea7\u751f\u5f88\u5927\u7684\u5f71\u54cd\u3002\u6240\u4ee5\uff0c\u79c9\u627f\u5b81\u53ef\u591a\u53d1\u6d88\u606f\uff0c\u4e5f\u4e0d\u53ef\u4e22\u5931\u6d88\u606f\u7684\u539f\u5219\uff0c\u5927\u90e8\u5206MQ\u90fd\u5bf9\u6d88\u606f\u91cd\u8bd5\u63d0\u4f9b\u4e86\u5f88\u597d\u7684\u652f\u6301\u3002<\/p>\n

<\/p>\n

RocketMQ\u4e3a\u4f7f\u7528\u8005\u5c01\u88c5\u4e86\u6d88\u606f\u91cd\u8bd5\u7684\u5904\u7406\u6d41\u7a0b\uff0c\u65e0\u9700\u5f00\u53d1\u4eba\u5458\u624b\u52a8\u5904\u7406\u3002RocketMQ\u652f\u6301\u4e86\u751f\u4ea7\u7aef\u548c\u6d88\u8d39\u7aef\u4e24\u7c7b\u91cd\u8bd5\u673a\u5236\u3002<\/p>\n

\u751f\u4ea7\u7aef\u91cd\u8bd5<\/h2>\n

\u751f\u4ea7\u91cd\u8bd5<\/h3>\n

\u5982\u679c\u7531\u4e8e\u7f51\u7edc\u6296\u52a8\u7b49\u539f\u56e0\uff0cProducer\u7a0b\u5e8f\u5411Broker\u53d1\u9001\u6d88\u606f\u65f6\u6ca1\u6709\u6210\u529f\uff0c\u5373\u53d1\u9001\u7aef\u6ca1\u6709\u6536\u5230Broker\u7684ACK\uff0c\u5bfc\u81f4\u6700\u7ec8Consumer\u65e0\u6cd5\u6d88\u8d39\u6d88\u606f\uff0c\u6b64\u65f6RocketMQ\u4f1a\u81ea\u52a8\u8fdb\u884c\u91cd\u8bd5\u3002<\/p>\n

\u76f8\u5173API<\/h3>\n

DefaultMQProducer\u53ef\u4ee5\u8bbe\u7f6e\u6d88\u606f\u53d1\u9001\u5931\u8d25\u7684\u6700\u5927\u91cd\u8bd5\u6b21\u6570\uff0c\u5e76\u53ef\u4ee5\u7ed3\u5408\u53d1\u9001\u7684\u8d85\u65f6\u65f6\u95f4\u6765\u8fdb\u884c\u91cd\u8bd5\u7684\u5904\u7406\uff0c\u5177\u4f53API\u5982\u4e0b\uff1a<\/p>\n

\/\/\u8bbe\u7f6e\u6d88\u606f\u53d1\u9001\u5931\u8d25\u65f6\u7684\u6700\u5927\u91cd\u8bd5\u6b21\u6570\npublic void setRetryTimesWhenSendFailed(int retryTimesWhenSendFailed) {\n   this.retryTimesWhenSendFailed = retryTimesWhenSendFailed;\n}\n\n\/\/\u540c\u6b65\u53d1\u9001\u6d88\u606f\uff0c\u5e76\u6307\u5b9a\u8d85\u65f6\u65f6\u95f4\npublic SendResult send(Message msg,\n                      long timeout) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {\n   return this.defaultMQProducerImpl.send(msg, timeout);\n}<\/code><\/pre>\n
\u56e0\u6b64\uff0c\u5b9e\u73b0\u751f\u4ea7\u7aef\u7684\u91cd\u8bd5\u5341\u5206\u7b80\u5355\uff0c\u4f8b\u5982\u4e0b\u9762\u7684\u4ee3\u7801\u53ef\u4ee5\u8bbe\u7f6eProducer\u5982\u679c\u57285s\u5185\u6ca1\u6709\u53d1\u9001\u6210\u529f\uff0c\u5219\u91cd\u8bd55\u6b21\uff1a<\/p>\n
\/\/\u540c\u6b65\u53d1\u9001\u6d88\u606f\uff0c\u5982\u679c5\u79d2\u5185\u6ca1\u6709\u53d1\u9001\u6210\u529f\uff0c\u5219\u91cd\u8bd55\u6b21\nDefaultMQProducer producer = new DefaultMQProducer("DefaultProducer");\nproducer.setRetryTimesWhenSendFailed(5);\nproducer.send(msg, 5000L);<\/code><\/pre>\n
\u6d88\u8d39\u7aef\u7684\u91cd\u8bd5<\/h2>\n
\u6d88\u8d39\u72b6\u6001<\/h3>\n
\u6d88\u8d39\u8005\u6d88\u8d39\u6d88\u606f\u540e\uff0c\u9700\u8981\u7ed9Broker\u8fd4\u56de\u6d88\u8d39\u72b6\u6001\u3002\u4ee5MessageListenerConcurrently<\/code>\u76d1\u542c\u5668\u4e3a\u4f8b\uff0cConsumer\u6d88\u8d39\u5b8c\u6210\u540e\u9700\u8981\u8fd4\u56deConsumeConcurrentlyStatus<\/code>\u5e76\u53d1\u6d88\u8d39\u72b6\u6001\u3002\u67e5\u770b\u6e90\u7801\uff0cConsumeConcurrentlyStatus<\/code>\u662f\u4e00\u4e2a\u679a\u4e3e\uff0c\u5171\u6709\u4e24\u79cd\u72b6\u6001\uff1a<\/p>\n
public enum ConsumeConcurrentlyStatus {\n   \/\/\u6d88\u8d39\u6210\u529f\n   CONSUME_SUCCESS,\n\n   \/\/\u6d88\u8d39\u5931\u8d25\uff0c\u4e00\u6bb5\u65f6\u95f4\u540e\u91cd\u8bd5\n   RECONSUME_LATER;\n}<\/code><\/pre>\n
Consumer\u7aef\u7684\u91cd\u8bd5\u5305\u62ec\u4e24\u79cd\u60c5\u51b5<\/p>\n
    \n
  • \u5f02\u5e38\u91cd\u8bd5\uff1a\u7531\u4e8eConsumer\u7aef\u903b\u8f91\u51fa\u73b0\u4e86\u5f02\u5e38\uff0c\u5bfc\u81f4\u8fd4\u56de\u4e86RECONSUME_LATER<\/code>\u72b6\u6001\uff0c\u90a3\u4e48Broker\u5c31\u4f1a\u5728\u4e00\u6bb5\u65f6\u95f4\u540e\u5c1d\u8bd5\u91cd\u8bd5<\/li>\n
  • \u8d85\u65f6\u91cd\u8bd5\uff1a\u5982\u679cConsumer\u7aef\u5904\u7406\u65f6\u95f4\u8fc7\u957f\uff0c\u6216\u8005\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0\u7ebf\u7a0b\u6302\u8d77\uff0c\u5bfc\u81f4\u8fdf\u8fdf\u6ca1\u6709\u8fd4\u56de\u6d88\u8d39\u72b6\u6001\uff0cBroker\u5c31\u4f1a\u8ba4\u4e3aConsumer\u6d88\u8d39\u8d85\u65f6\uff0c\u6b64\u65f6\u4f1a\u53d1\u8d77\u8d85\u65f6\u91cd\u8bd5<\/li>\n<\/ul>\n
    \u56e0\u6b64\uff0c\u5982\u679cConsumer\u7aef\u6b63\u5e38\u6d88\u8d39\u6210\u529f\uff0c\u4e00\u5b9a\u8981\u8fd4\u56deConsumeConcurrentlyStatus.CONSUME_SUCCESS<\/code>\u72b6\u6001\u3002<\/p>\n
    \u4e0b\u9762\u5206\u522b\u6f14\u793a\u4e24\u79cd\u91cd\u8bd5\u3002<\/p>\n
    \u5f02\u5e38\u91cd\u8bd5<\/h3>\n
    RocketMQ\u53ef\u5728broker.conf<\/code>\u6587\u4ef6\u4e2d\u914d\u7f6eConsumer\u7aef\u7684\u91cd\u8bd5\u6b21\u6570\u548c\u91cd\u8bd5\u65f6\u95f4\u95f4\u9694\uff0c\u5982\u4e0b\uff1a<\/p>\n
    messageDelayLevel=1s 5s 10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h<\/code><\/pre>\n
    \u4f46\u662f\u5728\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\uff0c\u5982\u679cConsumer\u7aef\u903b\u8f91\u51fa\u73b0\u5f02\u5e38\uff0c\u91cd\u8bd5\u592a\u591a\u6b21\u4e5f\u6ca1\u6709\u5f88\u5927\u7684\u610f\u4e49\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u6307\u5b9a\u6700\u5927\u7684\u91cd\u8bd5\u6b21\u6570\u3002\u5982\u4e0b\uff1a<\/p>\n
    import lombok.extern.slf4j.Slf4j;\nimport org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;\nimport org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;\nimport org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;\nimport org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;\nimport org.apache.rocketmq.client.exception.MQClientException;\nimport org.apache.rocketmq.common.consumer.ConsumeFromWhere;\nimport org.apache.rocketmq.common.message.MessageExt;\nimport org.apache.rocketmq.common.protocol.heartbeat.MessageModel;\nimport org.apache.rocketmq.remoting.common.RemotingHelper;\nimport org.springframework.beans.factory.annotation.Value;\nimport org.springframework.stereotype.Service;\nimport org.springframework.util.CollectionUtils;\nimport william.rmq.common.constant.RocketMQConstant;\n\nimport javax.annotation.PostConstruct;\nimport java.util.List;\n\n\/**\n * @Description:RocketMQ\u6d88\u606f\u6d88\u8d39\u8005\n *\/\n@Slf4j\n@Service\npublic class MessageConsumer implements MessageListenerConcurrently {\n   @Value("${spring.rocketmq.namesrvAddr}")\n   private String namesrvAddr;\n\n   private final DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("DefaultConsumer");\n\n   @PostConstruct\n   public void start() {\n       try {\n           consumer.setNamesrvAddr(namesrvAddr);\n\n           \/\/\u4ece\u6d88\u606f\u961f\u5217\u5934\u90e8\u5f00\u59cb\u6d88\u8d39\n           consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);\n\n           \/\/\u8bbe\u7f6e\u96c6\u7fa4\u6d88\u8d39\u6a21\u5f0f\n           consumer.setMessageModel(MessageModel.CLUSTERING);\n\n           \/\/\u8ba2\u9605\u4e3b\u9898\n           consumer.subscribe("DefaultCluster", "*");\n\n           \/\/\u6ce8\u518c\u6d88\u606f\u76d1\u542c\u5668\n           consumer.registerMessageListener(this);\n\n           \/\/\u542f\u52a8\u6d88\u8d39\u7aef\n           consumer.start();\n\n           log.info("Message Consumer Start...");\n           System.err.println("Message Consumer Start...");\n       } catch (MQClientException e) {\n           log.error("Message Consumer Start Error!!",e);\n       }\n\n   }\n\n   @Override\n   public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {\n       if (CollectionUtils.isEmpty(msgs)) {\n           return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;\n       }\n\n       MessageExt message = msgs.get(0);\n       try {\n           \/\/\u9010\u6761\u6d88\u8d39\n           String messageBody = new String(message.getBody(), RemotingHelper.DEFAULT_CHARSET);\n           System.err.println("Message Consumer: Handle New Message: messageId: " + message.getMsgId() + ",topic: " +\n                   message.getTopic() + ",tags: " + message.getTags() + ",messageBody: " + messageBody);\n\n           \/\/\u6a21\u62df\u4e1a\u52a1\u5f02\u5e38\n           int i = 1 \/ 0;\n           return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;\n       } catch (Exception e) {\n           log.error("Consume Message Error!!", e);\n           \/\/\u629b\u51fa\u5f02\u5e38\u65f6\uff0c\u8fd4\u56deConsumeConcurrentlyStatus.RECONSUME_LATER\uff0c\u5c1d\u8bd5\u91cd\u8bd5\u3002\u5f53\u91cd\u8bd5\u6307\u5b9a\u6b21\u6570\u540e\u8fd4\u56deConsumeConcurrentlyStatus.CONSUME_SUCCESS\n           int reconsumeTimes = message.getReconsumeTimes();\n           System.err.println("Now Retry Times: " + reconsumeTimes);\n           if (reconsumeTimes >= RocketMQConstant.MAX_RETRY_TIMES) {\n               return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;\n           }\n           return ConsumeConcurrentlyStatus.RECONSUME_LATER;\n       }\n   }\n\n}<\/code><\/pre>\n
    \u53ef\u4ee5\u770b\u5230\u63a7\u5236\u53f0\u6253\u5370\u5982\u4e0b\uff1a<\/p>\n
    Now Retry Times: 3\nMessage Consumer: Handle New Message: messageId: 0A0E096CA14618B4AAC2562C6D5B0000,topic: DefaultCluster,tags: Tags,messageBody: Message-1\nNow Retry Times: 3\nMessage Consumer: Handle New Message: messageId: C0A81FFA7FF318B4AAC24A37C32C0007,topic: DefaultCluster,tags: Tags,messageBody: Order-2-\u5b8c\u6210\nNow Retry Times: 3\nNow Retry Times: 3\nMessage Consumer: Handle New Message: messageId: C0A81FFA7FF318B4AAC24A37C3290006,topic: DefaultCluster,tags: Tags,messageBody: Order-2-\u652f\u4ed8\nNow Retry Times: 3\nNow Retry Times: 3<\/code><\/pre>\n
    \u6d88\u606f\u91cd\u8bd5\u6307\u5b9a\u7684\u6b21\u6570\u540e\uff0c\u5c31\u8fd4\u56deConsumeConcurrentlyStatus.CONSUME_SUCCESS<\/code>\u4e0d\u518d\u91cd\u8bd5\u4e86\u3002<\/p>\n
    \n
    \u6ce8\uff1a\u53ea\u6709\u5728\u6d88\u606f\u6a21\u5f0f\u4e3aMessageModel.CLUSTERING<\/code>\u96c6\u7fa4\u6a21\u5f0f\u65f6\uff0cBroker\u624d\u4f1a\u81ea\u52a8\u8fdb\u884c\u91cd\u8bd5\uff0c\u5e7f\u64ad\u6d88\u606f\u662f\u4e0d\u4f1a\u91cd\u8bd5\u7684<\/strong><\/p>\n<\/blockquote>\n
    \u8d85\u65f6\u91cd\u8bd5<\/h3>\n
    \u5f53Consumer\u5904\u7406\u65f6\u95f4\u8fc7\u957f\uff0c\u5728\u8d85\u65f6\u65f6\u95f4\u5185\u6ca1\u6709\u8fd4\u56de\u7ed9Broker\u6d88\u8d39\u72b6\u6001\uff0c\u90a3\u4e48Broker\u4e5f\u4f1a\u81ea\u52a8\u91cd\u8bd5<\/p>\n
    import lombok.extern.slf4j.Slf4j;\nimport org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;\nimport org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;\nimport org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;\nimport org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;\nimport org.apache.rocketmq.client.exception.MQClientException;\nimport org.apache.rocketmq.common.consumer.ConsumeFromWhere;\nimport org.apache.rocketmq.common.message.MessageExt;\nimport org.apache.rocketmq.common.protocol.heartbeat.MessageModel;\nimport org.apache.rocketmq.remoting.common.RemotingHelper;\nimport org.springframework.beans.factory.annotation.Value;\nimport org.springframework.stereotype.Service;\nimport org.springframework.util.CollectionUtils;\nimport william.rmq.common.constant.RocketMQConstant;\n\nimport javax.annotation.PostConstruct;\nimport java.util.List;\n\n\/**\n * @Description:RocketMQ\u6d88\u606f\u6d88\u8d39\u8005\n *\/\n@Slf4j\n@Service\npublic class MessageConsumer implements MessageListenerConcurrently {\n   @Value("${spring.rocketmq.namesrvAddr}")\n   private String namesrvAddr;\n\n   private final DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("DefaultConsumer");\n\n   @PostConstruct\n   public void start() {\n       try {\n           consumer.setNamesrvAddr(namesrvAddr);\n\n           \/\/\u4ece\u6d88\u606f\u961f\u5217\u5934\u90e8\u5f00\u59cb\u6d88\u8d39\n           consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);\n\n           \/\/\u8bbe\u7f6e\u96c6\u7fa4\u6d88\u8d39\u6a21\u5f0f\n           consumer.setMessageModel(MessageModel.CLUSTERING);\n\n           \/\/\u8bbe\u7f6e\u6d88\u8d39\u8d85\u65f6\u65f6\u95f4(\u5206\u949f)\n           consumer.setConsumeTimeout(RocketMQConstant.CONSUMER_TIMEOUT_MINUTES);\n\n           \/\/\u8ba2\u9605\u4e3b\u9898\n           consumer.subscribe("DefaultCluster", "*");\n\n           \/\/\u6ce8\u518c\u6d88\u606f\u76d1\u542c\u5668\n           consumer.registerMessageListener(this);\n\n           \/\/\u542f\u52a8\u6d88\u8d39\u7aef\n           consumer.start();\n\n           log.info("Message Consumer Start...");\n           System.err.println("Message Consumer Start...");\n       } catch (MQClientException e) {\n           log.error("Message Consumer Start Error!!",e);\n       }\n\n   }\n\n   @Override\n   public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {\n       if (CollectionUtils.isEmpty(msgs)) {\n           return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;\n       }\n\n       MessageExt message = msgs.get(0);\n       try {\n           \/\/\u9010\u6761\u6d88\u8d39\n           String messageBody = new String(message.getBody(), RemotingHelper.DEFAULT_CHARSET);\n           System.err.println("Message Consumer: Handle New Message: messageId: " + message.getMsgId() + ",topic: " +\n                   message.getTopic() + ",tags: " + message.getTags() + ",messageBody: " + messageBody);\n\n           \/\/\u6a21\u62df\u8017\u65f6\u64cd\u4f5c2\u5206\u949f\uff0c\u5927\u4e8e\u8bbe\u7f6e\u7684\u6d88\u8d39\u8d85\u65f6\u65f6\u95f4\n           Thread.sleep(1000L * 60 * 2);\n           return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;\n       } catch (Exception e) {\n           log.error("Consume Message Error!!", e);\n           return ConsumeConcurrentlyStatus.RECONSUME_LATER;\n       }\n   }\n\n}<\/code><\/pre>\n
    \u6d88\u606f\u7684\u5e42\u7b49\u53bb\u91cd<\/h3>\n
    \u7531\u4e8eMQ\u7684\u91cd\u8bd5\u673a\u5236\uff0c\u96be\u514d\u4f1a\u5f15\u8d77\u6d88\u606f\u7684\u91cd\u590d\u6d88\u8d39\u95ee\u9898\u3002\u6bd4\u5982\u4e00\u4e2aConsumerGroup\u4e2d\u6709\u4e24\u4e2a\uff0cConsumer1\u548cConsumer2\uff0c\u4ee5\u96c6\u7fa4\u65b9\u5f0f\u6d88\u8d39\u3002\u5047\u8bbe\u4e00\u6761\u6d88\u606f\u53d1\u5f80ConsumerGroup\uff0c\u7531Consumer1\u6d88\u8d39\uff0c\u4f46\u662f\u7531\u4e8eConsumer1\u6d88\u8d39\u8fc7\u6162\u5bfc\u81f4\u8d85\u65f6\uff0c\u6b21\u6570Broker\u4f1a\u5c06\u6d88\u606f\u53d1\u9001\u7ed9Consumer2\u53bb\u6d88\u8d39\uff0c\u8fd9\u6837\u5c31\u4ea7\u751f\u4e86\u91cd\u590d\u6d88\u8d39\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u4f7f\u7528MQ\u65f6\u5e94\u8be5\u5bf9\u4e00\u4e9b\u5173\u952e\u6d88\u606f\u8fdb\u884c\u5e42\u7b49\u53bb\u91cd\u7684\u5904\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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