getLog(); private static MQClientManager instance = new MQClientManager(); private AtomicInteger factoryIndexGenerator = new AtomicInteger(); private ConcurrentMap<String/* clientId */, MQClientInstance> factoryTable = new ConcurrentHashMap<String, MQClientInstance>(); private MQClientManager() { ...
RocketMQ之MQClientInstance梳理 RocketMQ(实时消息队列)是一种高性能、高可用的消息中间件,广泛应用于金融、电商、物联网等领域。在RocketMQ中,MQClientInstance是负责与Broker建立连接、发送和接收消息的关键组件。本文将介绍如何梳理RocketMQ中的MQClientInstance。 1. 了解MQClientInstance MQClientInstance是RocketMQ的...
State.CREATE_JUST;privateMQClientInstancemQClientFactory;privatePullAPIWrapper pullAPIWrapper;privatevolatilebooleanpause =false;privatebooleanconsumeOrderly =false;privateMessageListener messageListenerInner;privateOffsetStore offsetStore;privateConsumeMessageService consumeMessageService;privatelongqueueFlowControlTimes =...
⑤启动内部的defaultMQProducer this.defaultMQProducer.getDefaultMQProducerImpl().start(false); log.info("the client factory [{}] start OK", this.clientId); this.serviceState = ServiceState.RUNNING; break; case RUNNING: break; case SHUTDOWN_ALREADY: break; case START_FAILED: throw new MQ...
MQClientInstance 是负责网络通信的工具类,其内部实现是netty 初始化的地方在start方法 publicsynchronizedvoidstart()throwsMQClientException {switch(this.serviceState) {caseCREATE_JUST: log.info("the consumer [{}] start beginning. messageModel={}, isUnitMode={}",this.defaultMQPushConsumer.getConsumerGroup...
类定义在client包中,可以理解为是一个工厂,是对生产者、消费者以及控制台三者的合集,内部封装了netty客户端,消息的生产,消费和负载均衡的实现类等。另外MQClientInstance的实例化并不是直接new后使用,而是通过MQClientManager这个单例类,使用饿汉模式设计保证线程安全。 MQClientInstance的内部变量 字段名类型说明 client...
MQClientInstance#start-ScheduledTask(),核心代码如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 private void startScheduledTask() { ... this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() { @Override public void run() { try { //从nameserver更新最新的topic路由信息 MQClientI...
在RocketMQ中,org.apache.rocketmq.client.impl.factory.MQClientInstance 类是一个重要的客户端实例类,负责管理和维护与NameServer和Broker之间的通信。然而,根据我查阅的RocketMQ源码和相关文档,MQClientInstance 类中并没有名为 updateTopicRoute 的直接方法。相反,更新主题路由信息的方法通常是通过 updateTopicRouteInfo...
topicRouteData = this.mQClientAPIImpl.getTopicRouteInfoFromNameServer(topic, 1000 * 3); java.lang.IllegalStateException: org.apache.rocketmq.remoting.exception.RemotingTimeoutException: invokeSync call timeout at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(...
publicMQClientInstance(ClientConfig clientConfig,int instanceIndex,String clientId,RPCHook rpcHook){//配置this.clientConfig=clientConfig;this.instanceIndex=instanceIndex;//通信客户端配置this.nettyClientConfig=newNettyClientConfig();this.nettyClientConfig.setClientCallbackExecutorThreads(clientConfig.getClient...