消息中间件 RocketMQ 高级功能和源码分析（五）

一、 消息中间件 RocketMQ 源码分析：NameServer 路由元数据

1、消息中间件 RocketMQ 中，NameServer 路由管理

NameServer 的主要作用是为消息的生产者和消息消费者提供关于主题 Topic 的路由信息，那么 NameServer 需要存储路由的基础信息，还要管理 Broker 节点，包括路由注册、路由删除等。

2、消息中间件 RocketMQ 中，NameServer 路由元信息

1） 代码：RouteInfoManager

private final HashMap<String/* topic */, List<QueueData>> topicQueueTable;
private final HashMap<String/* brokerName */, BrokerData> brokerAddrTable;
private final HashMap<String/* clusterName */, Set<String/* brokerName */>> clusterAddrTable;
private final HashMap<String/* brokerAddr */, BrokerLiveInfo> brokerLiveTable;
private final HashMap<String/* brokerAddr */, List<String>/* Filter Server */> filterServerTable;

2）消息中间件 RocketMQ 中，NameServer 路由实体图：

3）说明：

topicQueueTable： Topic 消息队列路由信息，消息发送时根据路由表进行负载均衡

brokerAddrTable： Broker 基础信息，包括brokerName、所属集群名称、主备 Broker 地址

clusterAddrTable： Broker 集群信息，存储集群中所有 Broker 名称

brokerLiveTable： Broker 状态信息，NameServer 每次收到心跳包是会替换该信息

filterServerTable： Broker 上的 FilterServer 列表，用于类模式消息过滤。

RocketMQ 基于定于发布机制，一个 Topic 拥有多个消息队列，一个 Broker 为每一个主题创建4个读队列和4个写队列。多个 Broker 组成一个集群，集群由相同的多台 Broker 组成 Master-Slave 架构，brokerId为0 代表 Master，大于0为 Slave。BrokerLiveInfo 中的 lastUpdateTimestamp 存储上次收到 Broker 心跳包的时间。

4）实体数据实例图

3、org.apache.rocketmq.broker.BrokerStartup.java 源码：

/*
D:\RocketMQ\rocketmq-master\broker\src\main\java\org\apache\rocketmq\broker\BrokerStartup.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.broker;import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.PosixParser;
import org.apache.rocketmq.common.BrokerConfig;
import org.apache.rocketmq.common.MQVersion;
import org.apache.rocketmq.common.MixAll;
import org.apache.rocketmq.common.constant.LoggerName;
import org.apache.rocketmq.logging.InternalLogger;
import org.apache.rocketmq.logging.InternalLoggerFactory;
import org.apache.rocketmq.remoting.common.RemotingUtil;
import org.apache.rocketmq.remoting.common.TlsMode;
import org.apache.rocketmq.remoting.netty.NettyClientConfig;
import org.apache.rocketmq.remoting.netty.NettyServerConfig;
import org.apache.rocketmq.remoting.netty.NettySystemConfig;
import org.apache.rocketmq.remoting.netty.TlsSystemConfig;
import org.apache.rocketmq.remoting.protocol.RemotingCommand;
import org.apache.rocketmq.srvutil.ServerUtil;
import org.apache.rocketmq.store.config.BrokerRole;
import org.apache.rocketmq.store.config.MessageStoreConfig;
import org.slf4j.LoggerFactory;import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicInteger;import static org.apache.rocketmq.remoting.netty.TlsSystemConfig.TLS_ENABLE;public class BrokerStartup {public static Properties properties = null;public static CommandLine commandLine = null;public static String configFile = null;public static InternalLogger log;public static void main(String[] args) {start(createBrokerController(args));}public static BrokerController start(BrokerController controller) {try {controller.start();String tip = "The broker[" + controller.getBrokerConfig().getBrokerName() + ", "+ controller.getBrokerAddr() + "] boot success. serializeType=" + RemotingCommand.getSerializeTypeConfigInThisServer();if (null != controller.getBrokerConfig().getNamesrvAddr()) {tip += " and name server is " + controller.getBrokerConfig().getNamesrvAddr();}log.info(tip);System.out.printf("%s%n", tip);return controller;} catch (Throwable e) {e.printStackTrace();System.exit(-1);}return null;}public static void shutdown(final BrokerController controller) {if (null != controller) {controller.shutdown();}}public static BrokerController createBrokerController(String[] args) {System.setProperty(RemotingCommand.REMOTING_VERSION_KEY, Integer.toString(MQVersion.CURRENT_VERSION));if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_SNDBUF_SIZE)) {NettySystemConfig.socketSndbufSize = 131072;}if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_RCVBUF_SIZE)) {NettySystemConfig.socketRcvbufSize = 131072;}try {//PackageConflictDetect.detectFastjson();Options options = ServerUtil.buildCommandlineOptions(new Options());commandLine = ServerUtil.parseCmdLine("mqbroker", args, buildCommandlineOptions(options),new PosixParser());if (null == commandLine) {System.exit(-1);}final BrokerConfig brokerConfig = new BrokerConfig();final NettyServerConfig nettyServerConfig = new NettyServerConfig();final NettyClientConfig nettyClientConfig = new NettyClientConfig();nettyClientConfig.setUseTLS(Boolean.parseBoolean(System.getProperty(TLS_ENABLE,String.valueOf(TlsSystemConfig.tlsMode == TlsMode.ENFORCING))));nettyServerConfig.setListenPort(10911);final MessageStoreConfig messageStoreConfig = new MessageStoreConfig();if (BrokerRole.SLAVE == messageStoreConfig.getBrokerRole()) {int ratio = messageStoreConfig.getAccessMessageInMemoryMaxRatio() - 10;messageStoreConfig.setAccessMessageInMemoryMaxRatio(ratio);}if (commandLine.hasOption('c')) {String file = commandLine.getOptionValue('c');if (file != null) {configFile = file;InputStream in = new BufferedInputStream(new FileInputStream(file));properties = new Properties();properties.load(in);properties2SystemEnv(properties);MixAll.properties2Object(properties, brokerConfig);MixAll.properties2Object(properties, nettyServerConfig);MixAll.properties2Object(properties, nettyClientConfig);MixAll.properties2Object(properties, messageStoreConfig);BrokerPathConfigHelper.setBrokerConfigPath(file);in.close();}}MixAll.properties2Object(ServerUtil.commandLine2Properties(commandLine), brokerConfig);if (null == brokerConfig.getRocketmqHome()) {System.out.printf("Please set the %s variable in your environment to match the location of the RocketMQ installation", MixAll.ROCKETMQ_HOME_ENV);System.exit(-2);}String namesrvAddr = brokerConfig.getNamesrvAddr();if (null != namesrvAddr) {try {String[] addrArray = namesrvAddr.split(";");for (String addr : addrArray) {RemotingUtil.string2SocketAddress(addr);}} catch (Exception e) {System.out.printf("The Name Server Address[%s] illegal, please set it as follows, \"127.0.0.1:9876;192.168.0.1:9876\"%n",namesrvAddr);System.exit(-3);}}switch (messageStoreConfig.getBrokerRole()) {case ASYNC_MASTER:case SYNC_MASTER:brokerConfig.setBrokerId(MixAll.MASTER_ID);break;case SLAVE:if (brokerConfig.getBrokerId() <= 0) {System.out.printf("Slave's brokerId must be > 0");System.exit(-3);}break;default:break;}messageStoreConfig.setHaListenPort(nettyServerConfig.getListenPort() + 1);LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();JoranConfigurator configurator = new JoranConfigurator();configurator.setContext(lc);lc.reset();configurator.doConfigure(brokerConfig.getRocketmqHome() + "/conf/logback_broker.xml");if (commandLine.hasOption('p')) {InternalLogger console = InternalLoggerFactory.getLogger(LoggerName.BROKER_CONSOLE_NAME);MixAll.printObjectProperties(console, brokerConfig);MixAll.printObjectProperties(console, nettyServerConfig);MixAll.printObjectProperties(console, nettyClientConfig);MixAll.printObjectProperties(console, messageStoreConfig);System.exit(0);} else if (commandLine.hasOption('m')) {InternalLogger console = InternalLoggerFactory.getLogger(LoggerName.BROKER_CONSOLE_NAME);MixAll.printObjectProperties(console, brokerConfig, true);MixAll.printObjectProperties(console, nettyServerConfig, true);MixAll.printObjectProperties(console, nettyClientConfig, true);MixAll.printObjectProperties(console, messageStoreConfig, true);System.exit(0);}log = InternalLoggerFactory.getLogger(LoggerName.BROKER_LOGGER_NAME);MixAll.printObjectProperties(log, brokerConfig);MixAll.printObjectProperties(log, nettyServerConfig);MixAll.printObjectProperties(log, nettyClientConfig);MixAll.printObjectProperties(log, messageStoreConfig);final BrokerController controller = new BrokerController(brokerConfig,nettyServerConfig,nettyClientConfig,messageStoreConfig);// remember all configs to prevent discardcontroller.getConfiguration().registerConfig(properties);boolean initResult = controller.initialize();if (!initResult) {controller.shutdown();System.exit(-3);}Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {private volatile boolean hasShutdown = false;private AtomicInteger shutdownTimes = new AtomicInteger(0);@Overridepublic void run() {synchronized (this) {log.info("Shutdown hook was invoked, {}", this.shutdownTimes.incrementAndGet());if (!this.hasShutdown) {this.hasShutdown = true;long beginTime = System.currentTimeMillis();controller.shutdown();long consumingTimeTotal = System.currentTimeMillis() - beginTime;log.info("Shutdown hook over, consuming total time(ms): {}", consumingTimeTotal);}}}}, "ShutdownHook"));return controller;} catch (Throwable e) {e.printStackTrace();System.exit(-1);}return null;}private static void properties2SystemEnv(Properties properties) {if (properties == null) {return;}String rmqAddressServerDomain = properties.getProperty("rmqAddressServerDomain", MixAll.WS_DOMAIN_NAME);String rmqAddressServerSubGroup = properties.getProperty("rmqAddressServerSubGroup", MixAll.WS_DOMAIN_SUBGROUP);System.setProperty("rocketmq.namesrv.domain", rmqAddressServerDomain);System.setProperty("rocketmq.namesrv.domain.subgroup", rmqAddressServerSubGroup);}private static Options buildCommandlineOptions(final Options options) {Option opt = new Option("c", "configFile", true, "Broker config properties file");opt.setRequired(false);options.addOption(opt);opt = new Option("p", "printConfigItem", false, "Print all config item");opt.setRequired(false);options.addOption(opt);opt = new Option("m", "printImportantConfig", false, "Print important config item");opt.setRequired(false);options.addOption(opt);return options;}
}

4、org.apache.rocketmq.broker.BrokerController.java 源码：

/*
D:\RocketMQ\rocketmq-master\broker\src\main\java\org\apache\rocketmq\broker\BrokerController.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.broker;import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.apache.rocketmq.acl.AccessValidator;
import org.apache.rocketmq.broker.client.ClientHousekeepingService;
import org.apache.rocketmq.broker.client.ConsumerIdsChangeListener;
import org.apache.rocketmq.broker.client.ConsumerManager;
import org.apache.rocketmq.broker.client.DefaultConsumerIdsChangeListener;
import org.apache.rocketmq.broker.client.ProducerManager;
import org.apache.rocketmq.broker.client.net.Broker2Client;
import org.apache.rocketmq.broker.client.rebalance.RebalanceLockManager;
import org.apache.rocketmq.broker.dledger.DLedgerRoleChangeHandler;
import org.apache.rocketmq.broker.filter.CommitLogDispatcherCalcBitMap;
import org.apache.rocketmq.broker.filter.ConsumerFilterManager;
import org.apache.rocketmq.broker.filtersrv.FilterServerManager;
import org.apache.rocketmq.broker.latency.BrokerFastFailure;
import org.apache.rocketmq.broker.latency.BrokerFixedThreadPoolExecutor;
import org.apache.rocketmq.broker.longpolling.NotifyMessageArrivingListener;
import org.apache.rocketmq.broker.longpolling.PullRequestHoldService;
import org.apache.rocketmq.broker.mqtrace.ConsumeMessageHook;
import org.apache.rocketmq.broker.mqtrace.SendMessageHook;
import org.apache.rocketmq.broker.offset.ConsumerOffsetManager;
import org.apache.rocketmq.broker.out.BrokerOuterAPI;
import org.apache.rocketmq.broker.plugin.MessageStoreFactory;
import org.apache.rocketmq.broker.plugin.MessageStorePluginContext;
import org.apache.rocketmq.broker.processor.AdminBrokerProcessor;
import org.apache.rocketmq.broker.processor.ClientManageProcessor;
import org.apache.rocketmq.broker.processor.ConsumerManageProcessor;
import org.apache.rocketmq.broker.processor.EndTransactionProcessor;
import org.apache.rocketmq.broker.processor.PullMessageProcessor;
import org.apache.rocketmq.broker.processor.QueryMessageProcessor;
import org.apache.rocketmq.broker.processor.SendMessageProcessor;
import org.apache.rocketmq.broker.slave.SlaveSynchronize;
import org.apache.rocketmq.broker.subscription.SubscriptionGroupManager;
import org.apache.rocketmq.broker.topic.TopicConfigManager;
import org.apache.rocketmq.broker.transaction.AbstractTransactionalMessageCheckListener;
import org.apache.rocketmq.broker.transaction.TransactionalMessageCheckService;
import org.apache.rocketmq.broker.transaction.TransactionalMessageService;
import org.apache.rocketmq.broker.transaction.queue.DefaultTransactionalMessageCheckListener;
import org.apache.rocketmq.broker.transaction.queue.TransactionalMessageBridge;
import org.apache.rocketmq.broker.transaction.queue.TransactionalMessageServiceImpl;
import org.apache.rocketmq.broker.util.ServiceProvider;
import org.apache.rocketmq.common.BrokerConfig;
import org.apache.rocketmq.common.Configuration;
import org.apache.rocketmq.common.DataVersion;
import org.apache.rocketmq.common.ThreadFactoryImpl;
import org.apache.rocketmq.common.TopicConfig;
import org.apache.rocketmq.common.UtilAll;
import org.apache.rocketmq.common.constant.LoggerName;
import org.apache.rocketmq.common.constant.PermName;
import org.apache.rocketmq.common.namesrv.RegisterBrokerResult;
import org.apache.rocketmq.common.protocol.RequestCode;
import org.apache.rocketmq.common.protocol.body.TopicConfigSerializeWrapper;
import org.apache.rocketmq.common.stats.MomentStatsItem;
import org.apache.rocketmq.logging.InternalLogger;
import org.apache.rocketmq.logging.InternalLoggerFactory;
import org.apache.rocketmq.remoting.RPCHook;
import org.apache.rocketmq.remoting.RemotingServer;
import org.apache.rocketmq.remoting.common.TlsMode;
import org.apache.rocketmq.remoting.netty.NettyClientConfig;
import org.apache.rocketmq.remoting.netty.NettyRemotingServer;
import org.apache.rocketmq.remoting.netty.NettyRequestProcessor;
import org.apache.rocketmq.remoting.netty.NettyServerConfig;
import org.apache.rocketmq.remoting.netty.RequestTask;
import org.apache.rocketmq.remoting.netty.TlsSystemConfig;
import org.apache.rocketmq.remoting.protocol.RemotingCommand;
import org.apache.rocketmq.srvutil.FileWatchService;
import org.apache.rocketmq.store.DefaultMessageStore;
import org.apache.rocketmq.store.MessageArrivingListener;
import org.apache.rocketmq.store.MessageStore;
import org.apache.rocketmq.store.config.BrokerRole;
import org.apache.rocketmq.store.config.MessageStoreConfig;
import org.apache.rocketmq.store.dledger.DLedgerCommitLog;
import org.apache.rocketmq.store.stats.BrokerStats;
import org.apache.rocketmq.store.stats.BrokerStatsManager;public class BrokerController {private static final InternalLogger log = InternalLoggerFactory.getLogger(LoggerName.BROKER_LOGGER_NAME);private static final InternalLogger LOG_PROTECTION = InternalLoggerFactory.getLogger(LoggerName.PROTECTION_LOGGER_NAME);private static final InternalLogger LOG_WATER_MARK = InternalLoggerFactory.getLogger(LoggerName.WATER_MARK_LOGGER_NAME);private final BrokerConfig brokerConfig;private final NettyServerConfig nettyServerConfig;private final NettyClientConfig nettyClientConfig;private final MessageStoreConfig messageStoreConfig;private final ConsumerOffsetManager consumerOffsetManager;private final ConsumerManager consumerManager;private final ConsumerFilterManager consumerFilterManager;private final ProducerManager producerManager;private final ClientHousekeepingService clientHousekeepingService;private final PullMessageProcessor pullMessageProcessor;private final PullRequestHoldService pullRequestHoldService;private final MessageArrivingListener messageArrivingListener;private final Broker2Client broker2Client;private final SubscriptionGroupManager subscriptionGroupManager;private final ConsumerIdsChangeListener consumerIdsChangeListener;private final RebalanceLockManager rebalanceLockManager = new RebalanceLockManager();private final BrokerOuterAPI brokerOuterAPI;private final ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor(new ThreadFactoryImpl("BrokerControllerScheduledThread"));private final SlaveSynchronize slaveSynchronize;private final BlockingQueue<Runnable> sendThreadPoolQueue;private final BlockingQueue<Runnable> pullThreadPoolQueue;private final BlockingQueue<Runnable> queryThreadPoolQueue;private final BlockingQueue<Runnable> clientManagerThreadPoolQueue;private final BlockingQueue<Runnable> heartbeatThreadPoolQueue;private final BlockingQueue<Runnable> consumerManagerThreadPoolQueue;private final BlockingQueue<Runnable> endTransactionThreadPoolQueue;private final FilterServerManager filterServerManager;private final BrokerStatsManager brokerStatsManager;private final List<SendMessageHook> sendMessageHookList = new ArrayList<SendMessageHook>();private final List<ConsumeMessageHook> consumeMessageHookList = new ArrayList<ConsumeMessageHook>();private MessageStore messageStore;private RemotingServer remotingServer;private RemotingServer fastRemotingServer;private TopicConfigManager topicConfigManager;private ExecutorService sendMessageExecutor;private ExecutorService pullMessageExecutor;private ExecutorService queryMessageExecutor;private ExecutorService adminBrokerExecutor;private ExecutorService clientManageExecutor;private ExecutorService heartbeatExecutor;private ExecutorService consumerManageExecutor;private ExecutorService endTransactionExecutor;private boolean updateMasterHAServerAddrPeriodically = false;private BrokerStats brokerStats;private InetSocketAddress storeHost;private BrokerFastFailure brokerFastFailure;private Configuration configuration;private FileWatchService fileWatchService;private TransactionalMessageCheckService transactionalMessageCheckService;private TransactionalMessageService transactionalMessageService;private AbstractTransactionalMessageCheckListener transactionalMessageCheckListener;private Future<?> slaveSyncFuture;public BrokerController(final BrokerConfig brokerConfig,final NettyServerConfig nettyServerConfig,final NettyClientConfig nettyClientConfig,final MessageStoreConfig messageStoreConfig) {this.brokerConfig = brokerConfig;this.nettyServerConfig = nettyServerConfig;this.nettyClientConfig = nettyClientConfig;this.messageStoreConfig = messageStoreConfig;this.consumerOffsetManager = new ConsumerOffsetManager(this);this.topicConfigManager = new TopicConfigManager(this);this.pullMessageProcessor = new PullMessageProcessor(this);this.pullRequestHoldService = new PullRequestHoldService(this);this.messageArrivingListener = new NotifyMessageArrivingListener(this.pullRequestHoldService);this.consumerIdsChangeListener = new DefaultConsumerIdsChangeListener(this);this.consumerManager = new ConsumerManager(this.consumerIdsChangeListener);this.consumerFilterManager = new ConsumerFilterManager(this);this.producerManager = new ProducerManager();this.clientHousekeepingService = new ClientHousekeepingService(this);this.broker2Client = new Broker2Client(this);this.subscriptionGroupManager = new SubscriptionGroupManager(this);this.brokerOuterAPI = new BrokerOuterAPI(nettyClientConfig);this.filterServerManager = new FilterServerManager(this);this.slaveSynchronize = new SlaveSynchronize(this);this.sendThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getSendThreadPoolQueueCapacity());this.pullThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getPullThreadPoolQueueCapacity());this.queryThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getQueryThreadPoolQueueCapacity());this.clientManagerThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getClientManagerThreadPoolQueueCapacity());this.consumerManagerThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getConsumerManagerThreadPoolQueueCapacity());this.heartbeatThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getHeartbeatThreadPoolQueueCapacity());this.endTransactionThreadPoolQueue = new LinkedBlockingQueue<Runnable>(this.brokerConfig.getEndTransactionPoolQueueCapacity());this.brokerStatsManager = new BrokerStatsManager(this.brokerConfig.getBrokerClusterName());this.setStoreHost(new InetSocketAddress(this.getBrokerConfig().getBrokerIP1(), this.getNettyServerConfig().getListenPort()));this.brokerFastFailure = new BrokerFastFailure(this);this.configuration = new Configuration(log,BrokerPathConfigHelper.getBrokerConfigPath(),this.brokerConfig, this.nettyServerConfig, this.nettyClientConfig, this.messageStoreConfig);}public BrokerConfig getBrokerConfig() {return brokerConfig;}public NettyServerConfig getNettyServerConfig() {return nettyServerConfig;}public BlockingQueue<Runnable> getPullThreadPoolQueue() {return pullThreadPoolQueue;}public BlockingQueue<Runnable> getQueryThreadPoolQueue() {return queryThreadPoolQueue;}public boolean initialize() throws CloneNotSupportedException {boolean result = this.topicConfigManager.load();result = result && this.consumerOffsetManager.load();result = result && this.subscriptionGroupManager.load();result = result && this.consumerFilterManager.load();if (result) {try {this.messageStore =new DefaultMessageStore(this.messageStoreConfig, this.brokerStatsManager, this.messageArrivingListener,this.brokerConfig);if (messageStoreConfig.isEnableDLegerCommitLog()) {DLedgerRoleChangeHandler roleChangeHandler = new DLedgerRoleChangeHandler(this, (DefaultMessageStore) messageStore);((DLedgerCommitLog)((DefaultMessageStore) messageStore).getCommitLog()).getdLedgerServer().getdLedgerLeaderElector().addRoleChangeHandler(roleChangeHandler);}this.brokerStats = new BrokerStats((DefaultMessageStore) this.messageStore);//load pluginMessageStorePluginContext context = new MessageStorePluginContext(messageStoreConfig, brokerStatsManager, messageArrivingListener, brokerConfig);this.messageStore = MessageStoreFactory.build(context, this.messageStore);this.messageStore.getDispatcherList().addFirst(new CommitLogDispatcherCalcBitMap(this.brokerConfig, this.consumerFilterManager));} catch (IOException e) {result = false;log.error("Failed to initialize", e);}}result = result && this.messageStore.load();if (result) {this.remotingServer = new NettyRemotingServer(this.nettyServerConfig, this.clientHousekeepingService);NettyServerConfig fastConfig = (NettyServerConfig) this.nettyServerConfig.clone();fastConfig.setListenPort(nettyServerConfig.getListenPort() - 2);this.fastRemotingServer = new NettyRemotingServer(fastConfig, this.clientHousekeepingService);this.sendMessageExecutor = new BrokerFixedThreadPoolExecutor(this.brokerConfig.getSendMessageThreadPoolNums(),this.brokerConfig.getSendMessageThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.sendThreadPoolQueue,new ThreadFactoryImpl("SendMessageThread_"));this.pullMessageExecutor = new BrokerFixedThreadPoolExecutor(this.brokerConfig.getPullMessageThreadPoolNums(),this.brokerConfig.getPullMessageThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.pullThreadPoolQueue,new ThreadFactoryImpl("PullMessageThread_"));this.queryMessageExecutor = new BrokerFixedThreadPoolExecutor(this.brokerConfig.getQueryMessageThreadPoolNums(),this.brokerConfig.getQueryMessageThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.queryThreadPoolQueue,new ThreadFactoryImpl("QueryMessageThread_"));this.adminBrokerExecutor =Executors.newFixedThreadPool(this.brokerConfig.getAdminBrokerThreadPoolNums(), new ThreadFactoryImpl("AdminBrokerThread_"));this.clientManageExecutor = new ThreadPoolExecutor(this.brokerConfig.getClientManageThreadPoolNums(),this.brokerConfig.getClientManageThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.clientManagerThreadPoolQueue,new ThreadFactoryImpl("ClientManageThread_"));this.heartbeatExecutor = new BrokerFixedThreadPoolExecutor(this.brokerConfig.getHeartbeatThreadPoolNums(),this.brokerConfig.getHeartbeatThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.heartbeatThreadPoolQueue,new ThreadFactoryImpl("HeartbeatThread_", true));this.endTransactionExecutor = new BrokerFixedThreadPoolExecutor(this.brokerConfig.getEndTransactionThreadPoolNums(),this.brokerConfig.getEndTransactionThreadPoolNums(),1000 * 60,TimeUnit.MILLISECONDS,this.endTransactionThreadPoolQueue,new ThreadFactoryImpl("EndTransactionThread_"));this.consumerManageExecutor =Executors.newFixedThreadPool(this.brokerConfig.getConsumerManageThreadPoolNums(), new ThreadFactoryImpl("ConsumerManageThread_"));this.registerProcessor();final long initialDelay = UtilAll.computNextMorningTimeMillis() - System.currentTimeMillis();final long period = 1000 * 60 * 60 * 24;this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.getBrokerStats().record();} catch (Throwable e) {log.error("schedule record error.", e);}}}, initialDelay, period, TimeUnit.MILLISECONDS);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.consumerOffsetManager.persist();} catch (Throwable e) {log.error("schedule persist consumerOffset error.", e);}}}, 1000 * 10, this.brokerConfig.getFlushConsumerOffsetInterval(), TimeUnit.MILLISECONDS);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.consumerFilterManager.persist();} catch (Throwable e) {log.error("schedule persist consumer filter error.", e);}}}, 1000 * 10, 1000 * 10, TimeUnit.MILLISECONDS);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.protectBroker();} catch (Throwable e) {log.error("protectBroker error.", e);}}}, 3, 3, TimeUnit.MINUTES);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.printWaterMark();} catch (Throwable e) {log.error("printWaterMark error.", e);}}}, 10, 1, TimeUnit.SECONDS);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {log.info("dispatch behind commit log {} bytes", BrokerController.this.getMessageStore().dispatchBehindBytes());} catch (Throwable e) {log.error("schedule dispatchBehindBytes error.", e);}}}, 1000 * 10, 1000 * 60, TimeUnit.MILLISECONDS);if (this.brokerConfig.getNamesrvAddr() != null) {this.brokerOuterAPI.updateNameServerAddressList(this.brokerConfig.getNamesrvAddr());log.info("Set user specified name server address: {}", this.brokerConfig.getNamesrvAddr());} else if (this.brokerConfig.isFetchNamesrvAddrByAddressServer()) {this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.brokerOuterAPI.fetchNameServerAddr();} catch (Throwable e) {log.error("ScheduledTask fetchNameServerAddr exception", e);}}}, 1000 * 10, 1000 * 60 * 2, TimeUnit.MILLISECONDS);}if (!messageStoreConfig.isEnableDLegerCommitLog()) {if (BrokerRole.SLAVE == this.messageStoreConfig.getBrokerRole()) {if (this.messageStoreConfig.getHaMasterAddress() != null && this.messageStoreConfig.getHaMasterAddress().length() >= 6) {this.messageStore.updateHaMasterAddress(this.messageStoreConfig.getHaMasterAddress());this.updateMasterHAServerAddrPeriodically = false;} else {this.updateMasterHAServerAddrPeriodically = true;}} else {this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.printMasterAndSlaveDiff();} catch (Throwable e) {log.error("schedule printMasterAndSlaveDiff error.", e);}}}, 1000 * 10, 1000 * 60, TimeUnit.MILLISECONDS);}}if (TlsSystemConfig.tlsMode != TlsMode.DISABLED) {// Register a listener to reload SslContexttry {fileWatchService = new FileWatchService(new String[] {TlsSystemConfig.tlsServerCertPath,TlsSystemConfig.tlsServerKeyPath,TlsSystemConfig.tlsServerTrustCertPath},new FileWatchService.Listener() {boolean certChanged, keyChanged = false;@Overridepublic void onChanged(String path) {if (path.equals(TlsSystemConfig.tlsServerTrustCertPath)) {log.info("The trust certificate changed, reload the ssl context");reloadServerSslContext();}if (path.equals(TlsSystemConfig.tlsServerCertPath)) {certChanged = true;}if (path.equals(TlsSystemConfig.tlsServerKeyPath)) {keyChanged = true;}if (certChanged && keyChanged) {log.info("The certificate and private key changed, reload the ssl context");certChanged = keyChanged = false;reloadServerSslContext();}}private void reloadServerSslContext() {((NettyRemotingServer) remotingServer).loadSslContext();((NettyRemotingServer) fastRemotingServer).loadSslContext();}});} catch (Exception e) {log.warn("FileWatchService created error, can't load the certificate dynamically");}}initialTransaction();initialAcl();initialRpcHooks();}return result;}private void initialTransaction() {this.transactionalMessageService = ServiceProvider.loadClass(ServiceProvider.TRANSACTION_SERVICE_ID, TransactionalMessageService.class);if (null == this.transactionalMessageService) {this.transactionalMessageService = new TransactionalMessageServiceImpl(new TransactionalMessageBridge(this, this.getMessageStore()));log.warn("Load default transaction message hook service: {}", TransactionalMessageServiceImpl.class.getSimpleName());}this.transactionalMessageCheckListener = ServiceProvider.loadClass(ServiceProvider.TRANSACTION_LISTENER_ID, AbstractTransactionalMessageCheckListener.class);if (null == this.transactionalMessageCheckListener) {this.transactionalMessageCheckListener = new DefaultTransactionalMessageCheckListener();log.warn("Load default discard message hook service: {}", DefaultTransactionalMessageCheckListener.class.getSimpleName());}this.transactionalMessageCheckListener.setBrokerController(this);this.transactionalMessageCheckService = new TransactionalMessageCheckService(this);}private void initialAcl() {if (!this.brokerConfig.isAclEnable()) {log.info("The broker dose not enable acl");return;}List<AccessValidator> accessValidators = ServiceProvider.load(ServiceProvider.ACL_VALIDATOR_ID, AccessValidator.class);if (accessValidators == null || accessValidators.isEmpty()) {log.info("The broker dose not load the AccessValidator");return;}for (AccessValidator accessValidator: accessValidators) {final AccessValidator validator = accessValidator;this.registerServerRPCHook(new RPCHook() {@Overridepublic void doBeforeRequest(String remoteAddr, RemotingCommand request) {//Do not catch the exceptionvalidator.validate(validator.parse(request, remoteAddr));}@Overridepublic void doAfterResponse(String remoteAddr, RemotingCommand request, RemotingCommand response) {}});}}private void initialRpcHooks() {List<RPCHook> rpcHooks = ServiceProvider.load(ServiceProvider.RPC_HOOK_ID, RPCHook.class);if (rpcHooks == null || rpcHooks.isEmpty()) {return;}for (RPCHook rpcHook: rpcHooks) {this.registerServerRPCHook(rpcHook);}}public void registerProcessor() {/*** SendMessageProcessor*/SendMessageProcessor sendProcessor = new SendMessageProcessor(this);sendProcessor.registerSendMessageHook(sendMessageHookList);sendProcessor.registerConsumeMessageHook(consumeMessageHookList);this.remotingServer.registerProcessor(RequestCode.SEND_MESSAGE, sendProcessor, this.sendMessageExecutor);this.remotingServer.registerProcessor(RequestCode.SEND_MESSAGE_V2, sendProcessor, this.sendMessageExecutor);this.remotingServer.registerProcessor(RequestCode.SEND_BATCH_MESSAGE, sendProcessor, this.sendMessageExecutor);this.remotingServer.registerProcessor(RequestCode.CONSUMER_SEND_MSG_BACK, sendProcessor, this.sendMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.SEND_MESSAGE, sendProcessor, this.sendMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.SEND_MESSAGE_V2, sendProcessor, this.sendMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.SEND_BATCH_MESSAGE, sendProcessor, this.sendMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.CONSUMER_SEND_MSG_BACK, sendProcessor, this.sendMessageExecutor);/*** PullMessageProcessor*/this.remotingServer.registerProcessor(RequestCode.PULL_MESSAGE, this.pullMessageProcessor, this.pullMessageExecutor);this.pullMessageProcessor.registerConsumeMessageHook(consumeMessageHookList);/*** QueryMessageProcessor*/NettyRequestProcessor queryProcessor = new QueryMessageProcessor(this);this.remotingServer.registerProcessor(RequestCode.QUERY_MESSAGE, queryProcessor, this.queryMessageExecutor);this.remotingServer.registerProcessor(RequestCode.VIEW_MESSAGE_BY_ID, queryProcessor, this.queryMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.QUERY_MESSAGE, queryProcessor, this.queryMessageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.VIEW_MESSAGE_BY_ID, queryProcessor, this.queryMessageExecutor);/*** ClientManageProcessor*/ClientManageProcessor clientProcessor = new ClientManageProcessor(this);this.remotingServer.registerProcessor(RequestCode.HEART_BEAT, clientProcessor, this.heartbeatExecutor);this.remotingServer.registerProcessor(RequestCode.UNREGISTER_CLIENT, clientProcessor, this.clientManageExecutor);this.remotingServer.registerProcessor(RequestCode.CHECK_CLIENT_CONFIG, clientProcessor, this.clientManageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.HEART_BEAT, clientProcessor, this.heartbeatExecutor);this.fastRemotingServer.registerProcessor(RequestCode.UNREGISTER_CLIENT, clientProcessor, this.clientManageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.CHECK_CLIENT_CONFIG, clientProcessor, this.clientManageExecutor);/*** ConsumerManageProcessor*/ConsumerManageProcessor consumerManageProcessor = new ConsumerManageProcessor(this);this.remotingServer.registerProcessor(RequestCode.GET_CONSUMER_LIST_BY_GROUP, consumerManageProcessor, this.consumerManageExecutor);this.remotingServer.registerProcessor(RequestCode.UPDATE_CONSUMER_OFFSET, consumerManageProcessor, this.consumerManageExecutor);this.remotingServer.registerProcessor(RequestCode.QUERY_CONSUMER_OFFSET, consumerManageProcessor, this.consumerManageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.GET_CONSUMER_LIST_BY_GROUP, consumerManageProcessor, this.consumerManageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.UPDATE_CONSUMER_OFFSET, consumerManageProcessor, this.consumerManageExecutor);this.fastRemotingServer.registerProcessor(RequestCode.QUERY_CONSUMER_OFFSET, consumerManageProcessor, this.consumerManageExecutor);/*** EndTransactionProcessor*/this.remotingServer.registerProcessor(RequestCode.END_TRANSACTION, new EndTransactionProcessor(this), this.endTransactionExecutor);this.fastRemotingServer.registerProcessor(RequestCode.END_TRANSACTION, new EndTransactionProcessor(this), this.endTransactionExecutor);/*** Default*/AdminBrokerProcessor adminProcessor = new AdminBrokerProcessor(this);this.remotingServer.registerDefaultProcessor(adminProcessor, this.adminBrokerExecutor);this.fastRemotingServer.registerDefaultProcessor(adminProcessor, this.adminBrokerExecutor);}public BrokerStats getBrokerStats() {return brokerStats;}public void setBrokerStats(BrokerStats brokerStats) {this.brokerStats = brokerStats;}public void protectBroker() {if (this.brokerConfig.isDisableConsumeIfConsumerReadSlowly()) {final Iterator<Map.Entry<String, MomentStatsItem>> it = this.brokerStatsManager.getMomentStatsItemSetFallSize().getStatsItemTable().entrySet().iterator();while (it.hasNext()) {final Map.Entry<String, MomentStatsItem> next = it.next();final long fallBehindBytes = next.getValue().getValue().get();if (fallBehindBytes > this.brokerConfig.getConsumerFallbehindThreshold()) {final String[] split = next.getValue().getStatsKey().split("@");final String group = split[2];LOG_PROTECTION.info("[PROTECT_BROKER] the consumer[{}] consume slowly, {} bytes, disable it", group, fallBehindBytes);this.subscriptionGroupManager.disableConsume(group);}}}}public long headSlowTimeMills(BlockingQueue<Runnable> q) {long slowTimeMills = 0;final Runnable peek = q.peek();if (peek != null) {RequestTask rt = BrokerFastFailure.castRunnable(peek);slowTimeMills = rt == null ? 0 : this.messageStore.now() - rt.getCreateTimestamp();}if (slowTimeMills < 0) {slowTimeMills = 0;}return slowTimeMills;}public long headSlowTimeMills4SendThreadPoolQueue() {return this.headSlowTimeMills(this.sendThreadPoolQueue);}public long headSlowTimeMills4PullThreadPoolQueue() {return this.headSlowTimeMills(this.pullThreadPoolQueue);}public long headSlowTimeMills4QueryThreadPoolQueue() {return this.headSlowTimeMills(this.queryThreadPoolQueue);}public long headSlowTimeMills4EndTransactionThreadPoolQueue() {return this.headSlowTimeMills(this.endTransactionThreadPoolQueue);}public void printWaterMark() {LOG_WATER_MARK.info("[WATERMARK] Send Queue Size: {} SlowTimeMills: {}", this.sendThreadPoolQueue.size(), headSlowTimeMills4SendThreadPoolQueue());LOG_WATER_MARK.info("[WATERMARK] Pull Queue Size: {} SlowTimeMills: {}", this.pullThreadPoolQueue.size(), headSlowTimeMills4PullThreadPoolQueue());LOG_WATER_MARK.info("[WATERMARK] Query Queue Size: {} SlowTimeMills: {}", this.queryThreadPoolQueue.size(), headSlowTimeMills4QueryThreadPoolQueue());LOG_WATER_MARK.info("[WATERMARK] Transaction Queue Size: {} SlowTimeMills: {}", this.endTransactionThreadPoolQueue.size(), headSlowTimeMills4EndTransactionThreadPoolQueue());}public MessageStore getMessageStore() {return messageStore;}public void setMessageStore(MessageStore messageStore) {this.messageStore = messageStore;}private void printMasterAndSlaveDiff() {long diff = this.messageStore.slaveFallBehindMuch();// XXX: warn and notify melog.info("Slave fall behind master: {} bytes", diff);}public Broker2Client getBroker2Client() {return broker2Client;}public ConsumerManager getConsumerManager() {return consumerManager;}public ConsumerFilterManager getConsumerFilterManager() {return consumerFilterManager;}public ConsumerOffsetManager getConsumerOffsetManager() {return consumerOffsetManager;}public MessageStoreConfig getMessageStoreConfig() {return messageStoreConfig;}public ProducerManager getProducerManager() {return producerManager;}public void setFastRemotingServer(RemotingServer fastRemotingServer) {this.fastRemotingServer = fastRemotingServer;}public PullMessageProcessor getPullMessageProcessor() {return pullMessageProcessor;}public PullRequestHoldService getPullRequestHoldService() {return pullRequestHoldService;}public SubscriptionGroupManager getSubscriptionGroupManager() {return subscriptionGroupManager;}public void shutdown() {if (this.brokerStatsManager != null) {this.brokerStatsManager.shutdown();}if (this.clientHousekeepingService != null) {this.clientHousekeepingService.shutdown();}if (this.pullRequestHoldService != null) {this.pullRequestHoldService.shutdown();}if (this.remotingServer != null) {this.remotingServer.shutdown();}if (this.fastRemotingServer != null) {this.fastRemotingServer.shutdown();}if (this.fileWatchService != null) {this.fileWatchService.shutdown();}if (this.messageStore != null) {this.messageStore.shutdown();}this.scheduledExecutorService.shutdown();try {this.scheduledExecutorService.awaitTermination(5000, TimeUnit.MILLISECONDS);} catch (InterruptedException e) {}this.unregisterBrokerAll();if (this.sendMessageExecutor != null) {this.sendMessageExecutor.shutdown();}if (this.pullMessageExecutor != null) {this.pullMessageExecutor.shutdown();}if (this.adminBrokerExecutor != null) {this.adminBrokerExecutor.shutdown();}if (this.brokerOuterAPI != null) {this.brokerOuterAPI.shutdown();}this.consumerOffsetManager.persist();if (this.filterServerManager != null) {this.filterServerManager.shutdown();}if (this.brokerFastFailure != null) {this.brokerFastFailure.shutdown();}if (this.consumerFilterManager != null) {this.consumerFilterManager.persist();}if (this.clientManageExecutor != null) {this.clientManageExecutor.shutdown();}if (this.queryMessageExecutor != null) {this.queryMessageExecutor.shutdown();}if (this.consumerManageExecutor != null) {this.consumerManageExecutor.shutdown();}if (this.fileWatchService != null) {this.fileWatchService.shutdown();}if (this.transactionalMessageCheckService != null) {this.transactionalMessageCheckService.shutdown(false);}if (this.endTransactionExecutor != null) {this.endTransactionExecutor.shutdown();}}private void unregisterBrokerAll() {this.brokerOuterAPI.unregisterBrokerAll(this.brokerConfig.getBrokerClusterName(),this.getBrokerAddr(),this.brokerConfig.getBrokerName(),this.brokerConfig.getBrokerId());}public String getBrokerAddr() {return this.brokerConfig.getBrokerIP1() + ":" + this.nettyServerConfig.getListenPort();}public void start() throws Exception {if (this.messageStore != null) {this.messageStore.start();}if (this.remotingServer != null) {this.remotingServer.start();}if (this.fastRemotingServer != null) {this.fastRemotingServer.start();}if (this.fileWatchService != null) {this.fileWatchService.start();}if (this.brokerOuterAPI != null) {this.brokerOuterAPI.start();}if (this.pullRequestHoldService != null) {this.pullRequestHoldService.start();}if (this.clientHousekeepingService != null) {this.clientHousekeepingService.start();}if (this.filterServerManager != null) {this.filterServerManager.start();}if (!messageStoreConfig.isEnableDLegerCommitLog()) {startProcessorByHa(messageStoreConfig.getBrokerRole());handleSlaveSynchronize(messageStoreConfig.getBrokerRole());}this.registerBrokerAll(true, false, true);this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.registerBrokerAll(true, false, brokerConfig.isForceRegister());} catch (Throwable e) {log.error("registerBrokerAll Exception", e);}}}, 1000 * 10, Math.max(10000, Math.min(brokerConfig.getRegisterNameServerPeriod(), 60000)), TimeUnit.MILLISECONDS);if (this.brokerStatsManager != null) {this.brokerStatsManager.start();}if (this.brokerFastFailure != null) {this.brokerFastFailure.start();}}public synchronized void registerIncrementBrokerData(TopicConfig topicConfig, DataVersion dataVersion) {TopicConfig registerTopicConfig = topicConfig;if (!PermName.isWriteable(this.getBrokerConfig().getBrokerPermission())|| !PermName.isReadable(this.getBrokerConfig().getBrokerPermission())) {registerTopicConfig =new TopicConfig(topicConfig.getTopicName(), topicConfig.getReadQueueNums(), topicConfig.getWriteQueueNums(),this.brokerConfig.getBrokerPermission());}ConcurrentMap<String, TopicConfig> topicConfigTable = new ConcurrentHashMap<String, TopicConfig>();topicConfigTable.put(topicConfig.getTopicName(), registerTopicConfig);TopicConfigSerializeWrapper topicConfigSerializeWrapper = new TopicConfigSerializeWrapper();topicConfigSerializeWrapper.setDataVersion(dataVersion);topicConfigSerializeWrapper.setTopicConfigTable(topicConfigTable);doRegisterBrokerAll(true, false, topicConfigSerializeWrapper);}public synchronized void registerBrokerAll(final boolean checkOrderConfig, boolean oneway, boolean forceRegister) {TopicConfigSerializeWrapper topicConfigWrapper = this.getTopicConfigManager().buildTopicConfigSerializeWrapper();if (!PermName.isWriteable(this.getBrokerConfig().getBrokerPermission())|| !PermName.isReadable(this.getBrokerConfig().getBrokerPermission())) {ConcurrentHashMap<String, TopicConfig> topicConfigTable = new ConcurrentHashMap<String, TopicConfig>();for (TopicConfig topicConfig : topicConfigWrapper.getTopicConfigTable().values()) {TopicConfig tmp =new TopicConfig(topicConfig.getTopicName(), topicConfig.getReadQueueNums(), topicConfig.getWriteQueueNums(),this.brokerConfig.getBrokerPermission());topicConfigTable.put(topicConfig.getTopicName(), tmp);}topicConfigWrapper.setTopicConfigTable(topicConfigTable);}if (forceRegister || needRegister(this.brokerConfig.getBrokerClusterName(),this.getBrokerAddr(),this.brokerConfig.getBrokerName(),this.brokerConfig.getBrokerId(),this.brokerConfig.getRegisterBrokerTimeoutMills())) {doRegisterBrokerAll(checkOrderConfig, oneway, topicConfigWrapper);}}private void doRegisterBrokerAll(boolean checkOrderConfig, boolean oneway,TopicConfigSerializeWrapper topicConfigWrapper) {List<RegisterBrokerResult> registerBrokerResultList = this.brokerOuterAPI.registerBrokerAll(this.brokerConfig.getBrokerClusterName(),this.getBrokerAddr(),this.brokerConfig.getBrokerName(),this.brokerConfig.getBrokerId(),this.getHAServerAddr(),topicConfigWrapper,this.filterServerManager.buildNewFilterServerList(),oneway,this.brokerConfig.getRegisterBrokerTimeoutMills(),this.brokerConfig.isCompressedRegister());if (registerBrokerResultList.size() > 0) {RegisterBrokerResult registerBrokerResult = registerBrokerResultList.get(0);if (registerBrokerResult != null) {if (this.updateMasterHAServerAddrPeriodically && registerBrokerResult.getHaServerAddr() != null) {this.messageStore.updateHaMasterAddress(registerBrokerResult.getHaServerAddr());}this.slaveSynchronize.setMasterAddr(registerBrokerResult.getMasterAddr());if (checkOrderConfig) {this.getTopicConfigManager().updateOrderTopicConfig(registerBrokerResult.getKvTable());}}}}private boolean needRegister(final String clusterName,final String brokerAddr,final String brokerName,final long brokerId,final int timeoutMills) {TopicConfigSerializeWrapper topicConfigWrapper = this.getTopicConfigManager().buildTopicConfigSerializeWrapper();List<Boolean> changeList = brokerOuterAPI.needRegister(clusterName, brokerAddr, brokerName, brokerId, topicConfigWrapper, timeoutMills);boolean needRegister = false;for (Boolean changed : changeList) {if (changed) {needRegister = true;break;}}return needRegister;}public TopicConfigManager getTopicConfigManager() {return topicConfigManager;}public void setTopicConfigManager(TopicConfigManager topicConfigManager) {this.topicConfigManager = topicConfigManager;}public String getHAServerAddr() {return this.brokerConfig.getBrokerIP2() + ":" + this.messageStoreConfig.getHaListenPort();}public RebalanceLockManager getRebalanceLockManager() {return rebalanceLockManager;}public SlaveSynchronize getSlaveSynchronize() {return slaveSynchronize;}public ExecutorService getPullMessageExecutor() {return pullMessageExecutor;}public void setPullMessageExecutor(ExecutorService pullMessageExecutor) {this.pullMessageExecutor = pullMessageExecutor;}public BlockingQueue<Runnable> getSendThreadPoolQueue() {return sendThreadPoolQueue;}public FilterServerManager getFilterServerManager() {return filterServerManager;}public BrokerStatsManager getBrokerStatsManager() {return brokerStatsManager;}public List<SendMessageHook> getSendMessageHookList() {return sendMessageHookList;}public void registerSendMessageHook(final SendMessageHook hook) {this.sendMessageHookList.add(hook);log.info("register SendMessageHook Hook, {}", hook.hookName());}public List<ConsumeMessageHook> getConsumeMessageHookList() {return consumeMessageHookList;}public void registerConsumeMessageHook(final ConsumeMessageHook hook) {this.consumeMessageHookList.add(hook);log.info("register ConsumeMessageHook Hook, {}", hook.hookName());}public void registerServerRPCHook(RPCHook rpcHook) {getRemotingServer().registerRPCHook(rpcHook);this.fastRemotingServer.registerRPCHook(rpcHook);}public RemotingServer getRemotingServer() {return remotingServer;}public void setRemotingServer(RemotingServer remotingServer) {this.remotingServer = remotingServer;}public void registerClientRPCHook(RPCHook rpcHook) {this.getBrokerOuterAPI().registerRPCHook(rpcHook);}public BrokerOuterAPI getBrokerOuterAPI() {return brokerOuterAPI;}public InetSocketAddress getStoreHost() {return storeHost;}public void setStoreHost(InetSocketAddress storeHost) {this.storeHost = storeHost;}public Configuration getConfiguration() {return this.configuration;}public BlockingQueue<Runnable> getHeartbeatThreadPoolQueue() {return heartbeatThreadPoolQueue;}public TransactionalMessageCheckService getTransactionalMessageCheckService() {return transactionalMessageCheckService;}public void setTransactionalMessageCheckService(TransactionalMessageCheckService transactionalMessageCheckService) {this.transactionalMessageCheckService = transactionalMessageCheckService;}public TransactionalMessageService getTransactionalMessageService() {return transactionalMessageService;}public void setTransactionalMessageService(TransactionalMessageService transactionalMessageService) {this.transactionalMessageService = transactionalMessageService;}public AbstractTransactionalMessageCheckListener getTransactionalMessageCheckListener() {return transactionalMessageCheckListener;}public void setTransactionalMessageCheckListener(AbstractTransactionalMessageCheckListener transactionalMessageCheckListener) {this.transactionalMessageCheckListener = transactionalMessageCheckListener;}public BlockingQueue<Runnable> getEndTransactionThreadPoolQueue() {return endTransactionThreadPoolQueue;}private void handleSlaveSynchronize(BrokerRole role) {if (role == BrokerRole.SLAVE) {if (null != slaveSyncFuture) {slaveSyncFuture.cancel(false);}this.slaveSynchronize.setMasterAddr(null);slaveSyncFuture = this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.slaveSynchronize.syncAll();}catch (Throwable e) {log.error("ScheduledTask SlaveSynchronize syncAll error.", e);}}}, 1000 * 3, 1000 * 10, TimeUnit.MILLISECONDS);} else {//handle the slave synchroniseif (null != slaveSyncFuture) {slaveSyncFuture.cancel(false);}this.slaveSynchronize.setMasterAddr(null);}}public void changeToSlave(int brokerId) {log.info("Begin to change to slave brokerName={} brokerId={}", brokerConfig.getBrokerName(), brokerId);//change the rolebrokerConfig.setBrokerId(brokerId == 0 ? 1 : brokerId); //TO DO checkmessageStoreConfig.setBrokerRole(BrokerRole.SLAVE);//handle the scheduled servicetry {this.messageStore.handleScheduleMessageService(BrokerRole.SLAVE);} catch (Throwable t) {log.error("[MONITOR] handleScheduleMessageService failed when changing to slave", t);}//handle the transactional servicetry {this.shutdownProcessorByHa();} catch (Throwable t) {log.error("[MONITOR] shutdownProcessorByHa failed when changing to slave", t);}//handle the slave synchronisehandleSlaveSynchronize(BrokerRole.SLAVE);try {this.registerBrokerAll(true, true, brokerConfig.isForceRegister());} catch (Throwable ignored) {}log.info("Finish to change to slave brokerName={} brokerId={}", brokerConfig.getBrokerName(), brokerId);}public void changeToMaster(BrokerRole role) {if (role == BrokerRole.SLAVE) {return;}log.info("Begin to change to master brokerName={}", brokerConfig.getBrokerName());//handle the slave synchronisehandleSlaveSynchronize(role);//handle the scheduled servicetry {this.messageStore.handleScheduleMessageService(role);} catch (Throwable t) {log.error("[MONITOR] handleScheduleMessageService failed when changing to master", t);}//handle the transactional servicetry {this.startProcessorByHa(BrokerRole.SYNC_MASTER);} catch (Throwable t) {log.error("[MONITOR] startProcessorByHa failed when changing to master", t);}//if the operations above are totally successful, we change to masterbrokerConfig.setBrokerId(0); //TO DO checkmessageStoreConfig.setBrokerRole(role);try {this.registerBrokerAll(true, true, brokerConfig.isForceRegister());} catch (Throwable ignored) {}log.info("Finish to change to master brokerName={}", brokerConfig.getBrokerName());}private void startProcessorByHa(BrokerRole role) {if (BrokerRole.SLAVE != role) {if (this.transactionalMessageCheckService != null) {this.transactionalMessageCheckService.start();}}}private void shutdownProcessorByHa() {if (this.transactionalMessageCheckService != null) {this.transactionalMessageCheckService.shutdown(true);}}}

5、org.apache.rocketmq.common.BrokerConfig.java 源码：

/*
D:\RocketMQ\rocketmq-master\common\src\main\java\org\apache\rocketmq\common\BrokerConfig.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.common;import java.net.InetAddress;
import java.net.UnknownHostException;
import org.apache.rocketmq.common.annotation.ImportantField;
import org.apache.rocketmq.common.constant.LoggerName;
import org.apache.rocketmq.common.constant.PermName;
import org.apache.rocketmq.logging.InternalLogger;
import org.apache.rocketmq.logging.InternalLoggerFactory;
import org.apache.rocketmq.remoting.common.RemotingUtil;public class BrokerConfig {private static final InternalLogger log = InternalLoggerFactory.getLogger(LoggerName.COMMON_LOGGER_NAME);private String rocketmqHome = System.getProperty(MixAll.ROCKETMQ_HOME_PROPERTY, System.getenv(MixAll.ROCKETMQ_HOME_ENV));@ImportantFieldprivate String namesrvAddr = System.getProperty(MixAll.NAMESRV_ADDR_PROPERTY, System.getenv(MixAll.NAMESRV_ADDR_ENV));@ImportantFieldprivate String brokerIP1 = RemotingUtil.getLocalAddress();private String brokerIP2 = RemotingUtil.getLocalAddress();@ImportantFieldprivate String brokerName = localHostName();@ImportantFieldprivate String brokerClusterName = "DefaultCluster";@ImportantFieldprivate long brokerId = MixAll.MASTER_ID;private int brokerPermission = PermName.PERM_READ | PermName.PERM_WRITE;private int defaultTopicQueueNums = 8;@ImportantFieldprivate boolean autoCreateTopicEnable = true;private boolean clusterTopicEnable = true;private boolean brokerTopicEnable = true;@ImportantFieldprivate boolean autoCreateSubscriptionGroup = true;private String messageStorePlugIn = "";@ImportantFieldprivate String msgTraceTopicName = MixAll.RMQ_SYS_TRACE_TOPIC;@ImportantFieldprivate boolean traceTopicEnable = false;/*** thread numbers for send message thread pool, since spin lock will be used by default since 4.0.x, the default* value is 1.*/private int sendMessageThreadPoolNums = 1; //16 + Runtime.getRuntime().availableProcessors() * 4;private int pullMessageThreadPoolNums = 16 + Runtime.getRuntime().availableProcessors() * 2;private int queryMessageThreadPoolNums = 8 + Runtime.getRuntime().availableProcessors();private int adminBrokerThreadPoolNums = 16;private int clientManageThreadPoolNums = 32;private int consumerManageThreadPoolNums = 32;private int heartbeatThreadPoolNums = Math.min(32, Runtime.getRuntime().availableProcessors());/*** Thread numbers for EndTransactionProcessor*/private int endTransactionThreadPoolNums = 8 + Runtime.getRuntime().availableProcessors() * 2;private int flushConsumerOffsetInterval = 1000 * 5;private int flushConsumerOffsetHistoryInterval = 1000 * 60;@ImportantFieldprivate boolean rejectTransactionMessage = false;@ImportantFieldprivate boolean fetchNamesrvAddrByAddressServer = false;private int sendThreadPoolQueueCapacity = 10000;private int pullThreadPoolQueueCapacity = 100000;private int queryThreadPoolQueueCapacity = 20000;private int clientManagerThreadPoolQueueCapacity = 1000000;private int consumerManagerThreadPoolQueueCapacity = 1000000;private int heartbeatThreadPoolQueueCapacity = 50000;private int endTransactionPoolQueueCapacity = 100000;private int filterServerNums = 0;private boolean longPollingEnable = true;private long shortPollingTimeMills = 1000;private boolean notifyConsumerIdsChangedEnable = true;private boolean highSpeedMode = false;private boolean commercialEnable = true;private int commercialTimerCount = 1;private int commercialTransCount = 1;private int commercialBigCount = 1;private int commercialBaseCount = 1;private boolean transferMsgByHeap = true;private int maxDelayTime = 40;private String regionId = MixAll.DEFAULT_TRACE_REGION_ID;private int registerBrokerTimeoutMills = 6000;private boolean slaveReadEnable = false;private boolean disableConsumeIfConsumerReadSlowly = false;private long consumerFallbehindThreshold = 1024L * 1024 * 1024 * 16;private boolean brokerFastFailureEnable = true;private long waitTimeMillsInSendQueue = 200;private long waitTimeMillsInPullQueue = 5 * 1000;private long waitTimeMillsInHeartbeatQueue = 31 * 1000;private long waitTimeMillsInTransactionQueue = 3 * 1000;private long startAcceptSendRequestTimeStamp = 0L;private boolean traceOn = true;// Switch of filter bit map calculation.// If switch on:// 1. Calculate filter bit map when construct queue.// 2. Filter bit map will be saved to consume queue extend file if allowed.private boolean enableCalcFilterBitMap = false;// Expect num of consumers will use filter.private int expectConsumerNumUseFilter = 32;// Error rate of bloom filter, 1~100.private int maxErrorRateOfBloomFilter = 20;//how long to clean filter data after dead.Default: 24hprivate long filterDataCleanTimeSpan = 24 * 3600 * 1000;// whether do filter when retry.private boolean filterSupportRetry = false;private boolean enablePropertyFilter = false;private boolean compressedRegister = false;private boolean forceRegister = true;/*** This configurable item defines interval of topics registration of broker to name server. Allowing values are* between 10, 000 and 60, 000 milliseconds.*/private int registerNameServerPeriod = 1000 * 30;/*** The minimum time of the transactional message  to be checked firstly, one message only exceed this time interval* that can be checked.*/@ImportantFieldprivate long transactionTimeOut = 6 * 1000;/*** The maximum number of times the message was checked, if exceed this value, this message will be discarded.*/@ImportantFieldprivate int transactionCheckMax = 15;/*** Transaction message check interval.*/@ImportantFieldprivate long transactionCheckInterval = 60 * 1000;/*** Acl feature switch*/@ImportantFieldprivate boolean aclEnable = false;public static String localHostName() {try {return InetAddress.getLocalHost().getHostName();} catch (UnknownHostException e) {log.error("Failed to obtain the host name", e);}return "DEFAULT_BROKER";}public boolean isTraceOn() {return traceOn;}public void setTraceOn(final boolean traceOn) {this.traceOn = traceOn;}public long getStartAcceptSendRequestTimeStamp() {return startAcceptSendRequestTimeStamp;}public void setStartAcceptSendRequestTimeStamp(final long startAcceptSendRequestTimeStamp) {this.startAcceptSendRequestTimeStamp = startAcceptSendRequestTimeStamp;}public long getWaitTimeMillsInSendQueue() {return waitTimeMillsInSendQueue;}public void setWaitTimeMillsInSendQueue(final long waitTimeMillsInSendQueue) {this.waitTimeMillsInSendQueue = waitTimeMillsInSendQueue;}public long getConsumerFallbehindThreshold() {return consumerFallbehindThreshold;}public void setConsumerFallbehindThreshold(final long consumerFallbehindThreshold) {this.consumerFallbehindThreshold = consumerFallbehindThreshold;}public boolean isBrokerFastFailureEnable() {return brokerFastFailureEnable;}public void setBrokerFastFailureEnable(final boolean brokerFastFailureEnable) {this.brokerFastFailureEnable = brokerFastFailureEnable;}public long getWaitTimeMillsInPullQueue() {return waitTimeMillsInPullQueue;}public void setWaitTimeMillsInPullQueue(final long waitTimeMillsInPullQueue) {this.waitTimeMillsInPullQueue = waitTimeMillsInPullQueue;}public boolean isDisableConsumeIfConsumerReadSlowly() {return disableConsumeIfConsumerReadSlowly;}public void setDisableConsumeIfConsumerReadSlowly(final boolean disableConsumeIfConsumerReadSlowly) {this.disableConsumeIfConsumerReadSlowly = disableConsumeIfConsumerReadSlowly;}public boolean isSlaveReadEnable() {return slaveReadEnable;}public void setSlaveReadEnable(final boolean slaveReadEnable) {this.slaveReadEnable = slaveReadEnable;}public int getRegisterBrokerTimeoutMills() {return registerBrokerTimeoutMills;}public void setRegisterBrokerTimeoutMills(final int registerBrokerTimeoutMills) {this.registerBrokerTimeoutMills = registerBrokerTimeoutMills;}public String getRegionId() {return regionId;}public void setRegionId(final String regionId) {this.regionId = regionId;}public boolean isTransferMsgByHeap() {return transferMsgByHeap;}public void setTransferMsgByHeap(final boolean transferMsgByHeap) {this.transferMsgByHeap = transferMsgByHeap;}public String getMessageStorePlugIn() {return messageStorePlugIn;}public void setMessageStorePlugIn(String messageStorePlugIn) {this.messageStorePlugIn = messageStorePlugIn;}public boolean isHighSpeedMode() {return highSpeedMode;}public void setHighSpeedMode(final boolean highSpeedMode) {this.highSpeedMode = highSpeedMode;}public String getRocketmqHome() {return rocketmqHome;}public void setRocketmqHome(String rocketmqHome) {this.rocketmqHome = rocketmqHome;}public String getBrokerName() {return brokerName;}public void setBrokerName(String brokerName) {this.brokerName = brokerName;}public int getBrokerPermission() {return brokerPermission;}public void setBrokerPermission(int brokerPermission) {this.brokerPermission = brokerPermission;}public int getDefaultTopicQueueNums() {return defaultTopicQueueNums;}public void setDefaultTopicQueueNums(int defaultTopicQueueNums) {this.defaultTopicQueueNums = defaultTopicQueueNums;}public boolean isAutoCreateTopicEnable() {return autoCreateTopicEnable;}public void setAutoCreateTopicEnable(boolean autoCreateTopic) {this.autoCreateTopicEnable = autoCreateTopic;}public String getBrokerClusterName() {return brokerClusterName;}public void setBrokerClusterName(String brokerClusterName) {this.brokerClusterName = brokerClusterName;}public String getBrokerIP1() {return brokerIP1;}public void setBrokerIP1(String brokerIP1) {this.brokerIP1 = brokerIP1;}public String getBrokerIP2() {return brokerIP2;}public void setBrokerIP2(String brokerIP2) {this.brokerIP2 = brokerIP2;}public int getSendMessageThreadPoolNums() {return sendMessageThreadPoolNums;}public void setSendMessageThreadPoolNums(int sendMessageThreadPoolNums) {this.sendMessageThreadPoolNums = sendMessageThreadPoolNums;}public int getPullMessageThreadPoolNums() {return pullMessageThreadPoolNums;}public void setPullMessageThreadPoolNums(int pullMessageThreadPoolNums) {this.pullMessageThreadPoolNums = pullMessageThreadPoolNums;}public int getQueryMessageThreadPoolNums() {return queryMessageThreadPoolNums;}public void setQueryMessageThreadPoolNums(final int queryMessageThreadPoolNums) {this.queryMessageThreadPoolNums = queryMessageThreadPoolNums;}public int getAdminBrokerThreadPoolNums() {return adminBrokerThreadPoolNums;}public void setAdminBrokerThreadPoolNums(int adminBrokerThreadPoolNums) {this.adminBrokerThreadPoolNums = adminBrokerThreadPoolNums;}public int getFlushConsumerOffsetInterval() {return flushConsumerOffsetInterval;}public void setFlushConsumerOffsetInterval(int flushConsumerOffsetInterval) {this.flushConsumerOffsetInterval = flushConsumerOffsetInterval;}public int getFlushConsumerOffsetHistoryInterval() {return flushConsumerOffsetHistoryInterval;}public void setFlushConsumerOffsetHistoryInterval(int flushConsumerOffsetHistoryInterval) {this.flushConsumerOffsetHistoryInterval = flushConsumerOffsetHistoryInterval;}public boolean isClusterTopicEnable() {return clusterTopicEnable;}public void setClusterTopicEnable(boolean clusterTopicEnable) {this.clusterTopicEnable = clusterTopicEnable;}public String getNamesrvAddr() {return namesrvAddr;}public void setNamesrvAddr(String namesrvAddr) {this.namesrvAddr = namesrvAddr;}public long getBrokerId() {return brokerId;}public void setBrokerId(long brokerId) {this.brokerId = brokerId;}public boolean isAutoCreateSubscriptionGroup() {return autoCreateSubscriptionGroup;}public void setAutoCreateSubscriptionGroup(boolean autoCreateSubscriptionGroup) {this.autoCreateSubscriptionGroup = autoCreateSubscriptionGroup;}public boolean isRejectTransactionMessage() {return rejectTransactionMessage;}public void setRejectTransactionMessage(boolean rejectTransactionMessage) {this.rejectTransactionMessage = rejectTransactionMessage;}public boolean isFetchNamesrvAddrByAddressServer() {return fetchNamesrvAddrByAddressServer;}public void setFetchNamesrvAddrByAddressServer(boolean fetchNamesrvAddrByAddressServer) {this.fetchNamesrvAddrByAddressServer = fetchNamesrvAddrByAddressServer;}public int getSendThreadPoolQueueCapacity() {return sendThreadPoolQueueCapacity;}public void setSendThreadPoolQueueCapacity(int sendThreadPoolQueueCapacity) {this.sendThreadPoolQueueCapacity = sendThreadPoolQueueCapacity;}public int getPullThreadPoolQueueCapacity() {return pullThreadPoolQueueCapacity;}public void setPullThreadPoolQueueCapacity(int pullThreadPoolQueueCapacity) {this.pullThreadPoolQueueCapacity = pullThreadPoolQueueCapacity;}public int getQueryThreadPoolQueueCapacity() {return queryThreadPoolQueueCapacity;}public void setQueryThreadPoolQueueCapacity(final int queryThreadPoolQueueCapacity) {this.queryThreadPoolQueueCapacity = queryThreadPoolQueueCapacity;}public boolean isBrokerTopicEnable() {return brokerTopicEnable;}public void setBrokerTopicEnable(boolean brokerTopicEnable) {this.brokerTopicEnable = brokerTopicEnable;}public int getFilterServerNums() {return filterServerNums;}public void setFilterServerNums(int filterServerNums) {this.filterServerNums = filterServerNums;}public boolean isLongPollingEnable() {return longPollingEnable;}public void setLongPollingEnable(boolean longPollingEnable) {this.longPollingEnable = longPollingEnable;}public boolean isNotifyConsumerIdsChangedEnable() {return notifyConsumerIdsChangedEnable;}public void setNotifyConsumerIdsChangedEnable(boolean notifyConsumerIdsChangedEnable) {this.notifyConsumerIdsChangedEnable = notifyConsumerIdsChangedEnable;}public long getShortPollingTimeMills() {return shortPollingTimeMills;}public void setShortPollingTimeMills(long shortPollingTimeMills) {this.shortPollingTimeMills = shortPollingTimeMills;}public int getClientManageThreadPoolNums() {return clientManageThreadPoolNums;}public void setClientManageThreadPoolNums(int clientManageThreadPoolNums) {this.clientManageThreadPoolNums = clientManageThreadPoolNums;}public boolean isCommercialEnable() {return commercialEnable;}public void setCommercialEnable(final boolean commercialEnable) {this.commercialEnable = commercialEnable;}public int getCommercialTimerCount() {return commercialTimerCount;}public void setCommercialTimerCount(final int commercialTimerCount) {this.commercialTimerCount = commercialTimerCount;}public int getCommercialTransCount() {return commercialTransCount;}public void setCommercialTransCount(final int commercialTransCount) {this.commercialTransCount = commercialTransCount;}public int getCommercialBigCount() {return commercialBigCount;}public void setCommercialBigCount(final int commercialBigCount) {this.commercialBigCount = commercialBigCount;}public int getMaxDelayTime() {return maxDelayTime;}public void setMaxDelayTime(final int maxDelayTime) {this.maxDelayTime = maxDelayTime;}public int getClientManagerThreadPoolQueueCapacity() {return clientManagerThreadPoolQueueCapacity;}public void setClientManagerThreadPoolQueueCapacity(int clientManagerThreadPoolQueueCapacity) {this.clientManagerThreadPoolQueueCapacity = clientManagerThreadPoolQueueCapacity;}public int getConsumerManagerThreadPoolQueueCapacity() {return consumerManagerThreadPoolQueueCapacity;}public void setConsumerManagerThreadPoolQueueCapacity(int consumerManagerThreadPoolQueueCapacity) {this.consumerManagerThreadPoolQueueCapacity = consumerManagerThreadPoolQueueCapacity;}public int getConsumerManageThreadPoolNums() {return consumerManageThreadPoolNums;}public void setConsumerManageThreadPoolNums(int consumerManageThreadPoolNums) {this.consumerManageThreadPoolNums = consumerManageThreadPoolNums;}public int getCommercialBaseCount() {return commercialBaseCount;}public void setCommercialBaseCount(int commercialBaseCount) {this.commercialBaseCount = commercialBaseCount;}public boolean isEnableCalcFilterBitMap() {return enableCalcFilterBitMap;}public void setEnableCalcFilterBitMap(boolean enableCalcFilterBitMap) {this.enableCalcFilterBitMap = enableCalcFilterBitMap;}public int getExpectConsumerNumUseFilter() {return expectConsumerNumUseFilter;}public void setExpectConsumerNumUseFilter(int expectConsumerNumUseFilter) {this.expectConsumerNumUseFilter = expectConsumerNumUseFilter;}public int getMaxErrorRateOfBloomFilter() {return maxErrorRateOfBloomFilter;}public void setMaxErrorRateOfBloomFilter(int maxErrorRateOfBloomFilter) {this.maxErrorRateOfBloomFilter = maxErrorRateOfBloomFilter;}public long getFilterDataCleanTimeSpan() {return filterDataCleanTimeSpan;}public void setFilterDataCleanTimeSpan(long filterDataCleanTimeSpan) {this.filterDataCleanTimeSpan = filterDataCleanTimeSpan;}public boolean isFilterSupportRetry() {return filterSupportRetry;}public void setFilterSupportRetry(boolean filterSupportRetry) {this.filterSupportRetry = filterSupportRetry;}public boolean isEnablePropertyFilter() {return enablePropertyFilter;}public void setEnablePropertyFilter(boolean enablePropertyFilter) {this.enablePropertyFilter = enablePropertyFilter;}public boolean isCompressedRegister() {return compressedRegister;}public void setCompressedRegister(boolean compressedRegister) {this.compressedRegister = compressedRegister;}public boolean isForceRegister() {return forceRegister;}public void setForceRegister(boolean forceRegister) {this.forceRegister = forceRegister;}public int getHeartbeatThreadPoolQueueCapacity() {return heartbeatThreadPoolQueueCapacity;}public void setHeartbeatThreadPoolQueueCapacity(int heartbeatThreadPoolQueueCapacity) {this.heartbeatThreadPoolQueueCapacity = heartbeatThreadPoolQueueCapacity;}public int getHeartbeatThreadPoolNums() {return heartbeatThreadPoolNums;}public void setHeartbeatThreadPoolNums(int heartbeatThreadPoolNums) {this.heartbeatThreadPoolNums = heartbeatThreadPoolNums;}public long getWaitTimeMillsInHeartbeatQueue() {return waitTimeMillsInHeartbeatQueue;}public void setWaitTimeMillsInHeartbeatQueue(long waitTimeMillsInHeartbeatQueue) {this.waitTimeMillsInHeartbeatQueue = waitTimeMillsInHeartbeatQueue;}public int getRegisterNameServerPeriod() {return registerNameServerPeriod;}public void setRegisterNameServerPeriod(int registerNameServerPeriod) {this.registerNameServerPeriod = registerNameServerPeriod;}public long getTransactionTimeOut() {return transactionTimeOut;}public void setTransactionTimeOut(long transactionTimeOut) {this.transactionTimeOut = transactionTimeOut;}public int getTransactionCheckMax() {return transactionCheckMax;}public void setTransactionCheckMax(int transactionCheckMax) {this.transactionCheckMax = transactionCheckMax;}public long getTransactionCheckInterval() {return transactionCheckInterval;}public void setTransactionCheckInterval(long transactionCheckInterval) {this.transactionCheckInterval = transactionCheckInterval;}public int getEndTransactionThreadPoolNums() {return endTransactionThreadPoolNums;}public void setEndTransactionThreadPoolNums(int endTransactionThreadPoolNums) {this.endTransactionThreadPoolNums = endTransactionThreadPoolNums;}public int getEndTransactionPoolQueueCapacity() {return endTransactionPoolQueueCapacity;}public void setEndTransactionPoolQueueCapacity(int endTransactionPoolQueueCapacity) {this.endTransactionPoolQueueCapacity = endTransactionPoolQueueCapacity;}public long getWaitTimeMillsInTransactionQueue() {return waitTimeMillsInTransactionQueue;}public void setWaitTimeMillsInTransactionQueue(long waitTimeMillsInTransactionQueue) {this.waitTimeMillsInTransactionQueue = waitTimeMillsInTransactionQueue;}public String getMsgTraceTopicName() {return msgTraceTopicName;}public void setMsgTraceTopicName(String msgTraceTopicName) {this.msgTraceTopicName = msgTraceTopicName;}public boolean isTraceTopicEnable() {return traceTopicEnable;}public void setTraceTopicEnable(boolean traceTopicEnable) {this.traceTopicEnable = traceTopicEnable;}public boolean isAclEnable() {return aclEnable;}public void setAclEnable(boolean aclEnable) {this.aclEnable = aclEnable;}
}

6、org.apache.rocketmq.remoting.netty.NettyServerConfig.java 源码：

/*
D:\RocketMQ\rocketmq-master\remoting\src\main\java\org\apache\rocketmq\remoting\netty\NettyServerConfig.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.remoting.netty;public class NettyServerConfig implements Cloneable {private int listenPort = 8888;private int serverWorkerThreads = 8;private int serverCallbackExecutorThreads = 0;private int serverSelectorThreads = 3;private int serverOnewaySemaphoreValue = 256;private int serverAsyncSemaphoreValue = 64;private int serverChannelMaxIdleTimeSeconds = 120;private int serverSocketSndBufSize = NettySystemConfig.socketSndbufSize;private int serverSocketRcvBufSize = NettySystemConfig.socketRcvbufSize;private boolean serverPooledByteBufAllocatorEnable = true;/*** make make install*** ../glibc-2.10.1/configure \ --prefix=/usr \ --with-headers=/usr/include \* --host=x86_64-linux-gnu \ --build=x86_64-pc-linux-gnu \ --without-gd*/private boolean useEpollNativeSelector = false;public int getListenPort() {return listenPort;}public void setListenPort(int listenPort) {this.listenPort = listenPort;}public int getServerWorkerThreads() {return serverWorkerThreads;}public void setServerWorkerThreads(int serverWorkerThreads) {this.serverWorkerThreads = serverWorkerThreads;}public int getServerSelectorThreads() {return serverSelectorThreads;}public void setServerSelectorThreads(int serverSelectorThreads) {this.serverSelectorThreads = serverSelectorThreads;}public int getServerOnewaySemaphoreValue() {return serverOnewaySemaphoreValue;}public void setServerOnewaySemaphoreValue(int serverOnewaySemaphoreValue) {this.serverOnewaySemaphoreValue = serverOnewaySemaphoreValue;}public int getServerCallbackExecutorThreads() {return serverCallbackExecutorThreads;}public void setServerCallbackExecutorThreads(int serverCallbackExecutorThreads) {this.serverCallbackExecutorThreads = serverCallbackExecutorThreads;}public int getServerAsyncSemaphoreValue() {return serverAsyncSemaphoreValue;}public void setServerAsyncSemaphoreValue(int serverAsyncSemaphoreValue) {this.serverAsyncSemaphoreValue = serverAsyncSemaphoreValue;}public int getServerChannelMaxIdleTimeSeconds() {return serverChannelMaxIdleTimeSeconds;}public void setServerChannelMaxIdleTimeSeconds(int serverChannelMaxIdleTimeSeconds) {this.serverChannelMaxIdleTimeSeconds = serverChannelMaxIdleTimeSeconds;}public int getServerSocketSndBufSize() {return serverSocketSndBufSize;}public void setServerSocketSndBufSize(int serverSocketSndBufSize) {this.serverSocketSndBufSize = serverSocketSndBufSize;}public int getServerSocketRcvBufSize() {return serverSocketRcvBufSize;}public void setServerSocketRcvBufSize(int serverSocketRcvBufSize) {this.serverSocketRcvBufSize = serverSocketRcvBufSize;}public boolean isServerPooledByteBufAllocatorEnable() {return serverPooledByteBufAllocatorEnable;}public void setServerPooledByteBufAllocatorEnable(boolean serverPooledByteBufAllocatorEnable) {this.serverPooledByteBufAllocatorEnable = serverPooledByteBufAllocatorEnable;}public boolean isUseEpollNativeSelector() {return useEpollNativeSelector;}public void setUseEpollNativeSelector(boolean useEpollNativeSelector) {this.useEpollNativeSelector = useEpollNativeSelector;}@Overridepublic Object clone() throws CloneNotSupportedException {return (NettyServerConfig) super.clone();}
}

7、org.apache.rocketmq.remoting.netty.NettyClientConfig.java 源码：

/*
D:\RocketMQ\rocketmq-master\remoting\src\main\java\org\apache\rocketmq\remoting\netty\NettyClientConfig.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.remoting.netty;public class NettyClientConfig {/*** Worker thread number*/private int clientWorkerThreads = 4;private int clientCallbackExecutorThreads = Runtime.getRuntime().availableProcessors();private int clientOnewaySemaphoreValue = NettySystemConfig.CLIENT_ONEWAY_SEMAPHORE_VALUE;private int clientAsyncSemaphoreValue = NettySystemConfig.CLIENT_ASYNC_SEMAPHORE_VALUE;private int connectTimeoutMillis = 3000;private long channelNotActiveInterval = 1000 * 60;/*** IdleStateEvent will be triggered when neither read nor write was performed for* the specified period of this time. Specify {@code 0} to disable*/private int clientChannelMaxIdleTimeSeconds = 120;private int clientSocketSndBufSize = NettySystemConfig.socketSndbufSize;private int clientSocketRcvBufSize = NettySystemConfig.socketRcvbufSize;private boolean clientPooledByteBufAllocatorEnable = false;private boolean clientCloseSocketIfTimeout = false;private boolean useTLS;public boolean isClientCloseSocketIfTimeout() {return clientCloseSocketIfTimeout;}public void setClientCloseSocketIfTimeout(final boolean clientCloseSocketIfTimeout) {this.clientCloseSocketIfTimeout = clientCloseSocketIfTimeout;}public int getClientWorkerThreads() {return clientWorkerThreads;}public void setClientWorkerThreads(int clientWorkerThreads) {this.clientWorkerThreads = clientWorkerThreads;}public int getClientOnewaySemaphoreValue() {return clientOnewaySemaphoreValue;}public void setClientOnewaySemaphoreValue(int clientOnewaySemaphoreValue) {this.clientOnewaySemaphoreValue = clientOnewaySemaphoreValue;}public int getConnectTimeoutMillis() {return connectTimeoutMillis;}public void setConnectTimeoutMillis(int connectTimeoutMillis) {this.connectTimeoutMillis = connectTimeoutMillis;}public int getClientCallbackExecutorThreads() {return clientCallbackExecutorThreads;}public void setClientCallbackExecutorThreads(int clientCallbackExecutorThreads) {this.clientCallbackExecutorThreads = clientCallbackExecutorThreads;}public long getChannelNotActiveInterval() {return channelNotActiveInterval;}public void setChannelNotActiveInterval(long channelNotActiveInterval) {this.channelNotActiveInterval = channelNotActiveInterval;}public int getClientAsyncSemaphoreValue() {return clientAsyncSemaphoreValue;}public void setClientAsyncSemaphoreValue(int clientAsyncSemaphoreValue) {this.clientAsyncSemaphoreValue = clientAsyncSemaphoreValue;}public int getClientChannelMaxIdleTimeSeconds() {return clientChannelMaxIdleTimeSeconds;}public void setClientChannelMaxIdleTimeSeconds(int clientChannelMaxIdleTimeSeconds) {this.clientChannelMaxIdleTimeSeconds = clientChannelMaxIdleTimeSeconds;}public int getClientSocketSndBufSize() {return clientSocketSndBufSize;}public void setClientSocketSndBufSize(int clientSocketSndBufSize) {this.clientSocketSndBufSize = clientSocketSndBufSize;}public int getClientSocketRcvBufSize() {return clientSocketRcvBufSize;}public void setClientSocketRcvBufSize(int clientSocketRcvBufSize) {this.clientSocketRcvBufSize = clientSocketRcvBufSize;}public boolean isClientPooledByteBufAllocatorEnable() {return clientPooledByteBufAllocatorEnable;}public void setClientPooledByteBufAllocatorEnable(boolean clientPooledByteBufAllocatorEnable) {this.clientPooledByteBufAllocatorEnable = clientPooledByteBufAllocatorEnable;}public boolean isUseTLS() {return useTLS;}public void setUseTLS(boolean useTLS) {this.useTLS = useTLS;}
}

8、org.apache.rocketmq.store.config.MessageStoreConfig.java 源码：

/*
D:\RocketMQ\rocketmq-master\store\src\main\java\org\apache\rocketmq\store\config\MessageStoreConfig.java* Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You under the Apache License, Version 2.0* (the "License"); you may not use this file except in compliance with* the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package org.apache.rocketmq.store.config;import java.io.File;
import org.apache.rocketmq.common.annotation.ImportantField;
import org.apache.rocketmq.store.ConsumeQueue;public class MessageStoreConfig {//The root directory in which the log data is kept@ImportantFieldprivate String storePathRootDir = System.getProperty("user.home") + File.separator + "store";//The directory in which the commitlog is kept@ImportantFieldprivate String storePathCommitLog = System.getProperty("user.home") + File.separator + "store"+ File.separator + "commitlog";// CommitLog file size,default is 1Gprivate int mapedFileSizeCommitLog = 1024 * 1024 * 1024;// ConsumeQueue file size,default is 30Wprivate int mapedFileSizeConsumeQueue = 300000 * ConsumeQueue.CQ_STORE_UNIT_SIZE;// enable consume queue extprivate boolean enableConsumeQueueExt = false;// ConsumeQueue extend file size, 48Mprivate int mappedFileSizeConsumeQueueExt = 48 * 1024 * 1024;// Bit count of filter bit map.// this will be set by pipe of calculate filter bit map.private int bitMapLengthConsumeQueueExt = 64;// CommitLog flush interval// flush data to disk@ImportantFieldprivate int flushIntervalCommitLog = 500;// Only used if TransientStorePool enabled// flush data to FileChannel@ImportantFieldprivate int commitIntervalCommitLog = 200;/*** introduced since 4.0.x. Determine whether to use mutex reentrantLock when putting message.<br/>* By default it is set to false indicating using spin lock when putting message.*/private boolean useReentrantLockWhenPutMessage = false;// Whether schedule flush,default is real-time@ImportantFieldprivate boolean flushCommitLogTimed = false;// ConsumeQueue flush intervalprivate int flushIntervalConsumeQueue = 1000;// Resource reclaim intervalprivate int cleanResourceInterval = 10000;// CommitLog removal intervalprivate int deleteCommitLogFilesInterval = 100;// ConsumeQueue removal intervalprivate int deleteConsumeQueueFilesInterval = 100;private int destroyMapedFileIntervalForcibly = 1000 * 120;private int redeleteHangedFileInterval = 1000 * 120;// When to delete,default is at 4 am@ImportantFieldprivate String deleteWhen = "04";private int diskMaxUsedSpaceRatio = 75;// The number of hours to keep a log file before deleting it (in hours)@ImportantFieldprivate int fileReservedTime = 72;// Flow control for ConsumeQueueprivate int putMsgIndexHightWater = 600000;// The maximum size of a single log file,default is 512Kprivate int maxMessageSize = 1024 * 1024 * 4;// Whether check the CRC32 of the records consumed.// This ensures no on-the-wire or on-disk corruption to the messages occurred.// This check adds some overhead,so it may be disabled in cases seeking extreme performance.private boolean checkCRCOnRecover = true;// How many pages are to be flushed when flush CommitLogprivate int flushCommitLogLeastPages = 4;// How many pages are to be committed when commit data to fileprivate int commitCommitLogLeastPages = 4;// Flush page size when the disk in warming stateprivate int flushLeastPagesWhenWarmMapedFile = 1024 / 4 * 16;// How many pages are to be flushed when flush ConsumeQueueprivate int flushConsumeQueueLeastPages = 2;private int flushCommitLogThoroughInterval = 1000 * 10;private int commitCommitLogThoroughInterval = 200;private int flushConsumeQueueThoroughInterval = 1000 * 60;@ImportantFieldprivate int maxTransferBytesOnMessageInMemory = 1024 * 256;@ImportantFieldprivate int maxTransferCountOnMessageInMemory = 32;@ImportantFieldprivate int maxTransferBytesOnMessageInDisk = 1024 * 64;@ImportantFieldprivate int maxTransferCountOnMessageInDisk = 8;@ImportantFieldprivate int accessMessageInMemoryMaxRatio = 40;@ImportantFieldprivate boolean messageIndexEnable = true;private int maxHashSlotNum = 5000000;private int maxIndexNum = 5000000 * 4;private int maxMsgsNumBatch = 64;@ImportantFieldprivate boolean messageIndexSafe = false;private int haListenPort = 10912;private int haSendHeartbeatInterval = 1000 * 5;private int haHousekeepingInterval = 1000 * 20;private int haTransferBatchSize = 1024 * 32;@ImportantFieldprivate String haMasterAddress = null;private int haSlaveFallbehindMax = 1024 * 1024 * 256;@ImportantFieldprivate BrokerRole brokerRole = BrokerRole.ASYNC_MASTER;@ImportantFieldprivate FlushDiskType flushDiskType = FlushDiskType.ASYNC_FLUSH;private int syncFlushTimeout = 1000 * 5;private String messageDelayLevel = "1s 5s 10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h";private long flushDelayOffsetInterval = 1000 * 10;@ImportantFieldprivate boolean cleanFileForciblyEnable = true;private boolean warmMapedFileEnable = false;private boolean offsetCheckInSlave = false;private boolean debugLockEnable = false;private boolean duplicationEnable = false;private boolean diskFallRecorded = true;private long osPageCacheBusyTimeOutMills = 1000;private int defaultQueryMaxNum = 32;@ImportantFieldprivate boolean transientStorePoolEnable = false;private int transientStorePoolSize = 5;private boolean fastFailIfNoBufferInStorePool = false;private boolean enableDLegerCommitLog = false;private String dLegerGroup;private String dLegerPeers;private String dLegerSelfId;public boolean isDebugLockEnable() {return debugLockEnable;}public void setDebugLockEnable(final boolean debugLockEnable) {this.debugLockEnable = debugLockEnable;}public boolean isDuplicationEnable() {return duplicationEnable;}public void setDuplicationEnable(final boolean duplicationEnable) {this.duplicationEnable = duplicationEnable;}public long getOsPageCacheBusyTimeOutMills() {return osPageCacheBusyTimeOutMills;}public void setOsPageCacheBusyTimeOutMills(final long osPageCacheBusyTimeOutMills) {this.osPageCacheBusyTimeOutMills = osPageCacheBusyTimeOutMills;}public boolean isDiskFallRecorded() {return diskFallRecorded;}public void setDiskFallRecorded(final boolean diskFallRecorded) {this.diskFallRecorded = diskFallRecorded;}public boolean isWarmMapedFileEnable() {return warmMapedFileEnable;}public void setWarmMapedFileEnable(boolean warmMapedFileEnable) {this.warmMapedFileEnable = warmMapedFileEnable;}public int getMapedFileSizeCommitLog() {return mapedFileSizeCommitLog;}public void setMapedFileSizeCommitLog(int mapedFileSizeCommitLog) {this.mapedFileSizeCommitLog = mapedFileSizeCommitLog;}public int getMapedFileSizeConsumeQueue() {int factor = (int) Math.ceil(this.mapedFileSizeConsumeQueue / (ConsumeQueue.CQ_STORE_UNIT_SIZE * 1.0));return (int) (factor * ConsumeQueue.CQ_STORE_UNIT_SIZE);}public void setMapedFileSizeConsumeQueue(int mapedFileSizeConsumeQueue) {this.mapedFileSizeConsumeQueue = mapedFileSizeConsumeQueue;}public boolean isEnableConsumeQueueExt() {return enableConsumeQueueExt;}public void setEnableConsumeQueueExt(boolean enableConsumeQueueExt) {this.enableConsumeQueueExt = enableConsumeQueueExt;}public int getMappedFileSizeConsumeQueueExt() {return mappedFileSizeConsumeQueueExt;}public void setMappedFileSizeConsumeQueueExt(int mappedFileSizeConsumeQueueExt) {this.mappedFileSizeConsumeQueueExt = mappedFileSizeConsumeQueueExt;}public int getBitMapLengthConsumeQueueExt() {return bitMapLengthConsumeQueueExt;}public void setBitMapLengthConsumeQueueExt(int bitMapLengthConsumeQueueExt) {this.bitMapLengthConsumeQueueExt = bitMapLengthConsumeQueueExt;}public int getFlushIntervalCommitLog() {return flushIntervalCommitLog;}public void setFlushIntervalCommitLog(int flushIntervalCommitLog) {this.flushIntervalCommitLog = flushIntervalCommitLog;}public int getFlushIntervalConsumeQueue() {return flushIntervalConsumeQueue;}public void setFlushIntervalConsumeQueue(int flushIntervalConsumeQueue) {this.flushIntervalConsumeQueue = flushIntervalConsumeQueue;}public int getPutMsgIndexHightWater() {return putMsgIndexHightWater;}public void setPutMsgIndexHightWater(int putMsgIndexHightWater) {this.putMsgIndexHightWater = putMsgIndexHightWater;}public int getCleanResourceInterval() {return cleanResourceInterval;}public void setCleanResourceInterval(int cleanResourceInterval) {this.cleanResourceInterval = cleanResourceInterval;}public int getMaxMessageSize() {return maxMessageSize;}public void setMaxMessageSize(int maxMessageSize) {this.maxMessageSize = maxMessageSize;}public boolean isCheckCRCOnRecover() {return checkCRCOnRecover;}public boolean getCheckCRCOnRecover() {return checkCRCOnRecover;}public void setCheckCRCOnRecover(boolean checkCRCOnRecover) {this.checkCRCOnRecover = checkCRCOnRecover;}public String getStorePathCommitLog() {return storePathCommitLog;}public void setStorePathCommitLog(String storePathCommitLog) {this.storePathCommitLog = storePathCommitLog;}public String getDeleteWhen() {return deleteWhen;}public void setDeleteWhen(String deleteWhen) {this.deleteWhen = deleteWhen;}public int getDiskMaxUsedSpaceRatio() {if (this.diskMaxUsedSpaceRatio < 10)return 10;if (this.diskMaxUsedSpaceRatio > 95)return 95;return diskMaxUsedSpaceRatio;}public void setDiskMaxUsedSpaceRatio(int diskMaxUsedSpaceRatio) {this.diskMaxUsedSpaceRatio = diskMaxUsedSpaceRatio;}public int getDeleteCommitLogFilesInterval() {return deleteCommitLogFilesInterval;}public void setDeleteCommitLogFilesInterval(int deleteCommitLogFilesInterval) {this.deleteCommitLogFilesInterval = deleteCommitLogFilesInterval;}public int getDeleteConsumeQueueFilesInterval() {return deleteConsumeQueueFilesInterval;}public void setDeleteConsumeQueueFilesInterval(int deleteConsumeQueueFilesInterval) {this.deleteConsumeQueueFilesInterval = deleteConsumeQueueFilesInterval;}public int getMaxTransferBytesOnMessageInMemory() {return maxTransferBytesOnMessageInMemory;}public void setMaxTransferBytesOnMessageInMemory(int maxTransferBytesOnMessageInMemory) {this.maxTransferBytesOnMessageInMemory = maxTransferBytesOnMessageInMemory;}public int getMaxTransferCountOnMessageInMemory() {return maxTransferCountOnMessageInMemory;}public void setMaxTransferCountOnMessageInMemory(int maxTransferCountOnMessageInMemory) {this.maxTransferCountOnMessageInMemory = maxTransferCountOnMessageInMemory;}public int getMaxTransferBytesOnMessageInDisk() {return maxTransferBytesOnMessageInDisk;}public void setMaxTransferBytesOnMessageInDisk(int maxTransferBytesOnMessageInDisk) {this.maxTransferBytesOnMessageInDisk = maxTransferBytesOnMessageInDisk;}public int getMaxTransferCountOnMessageInDisk() {return maxTransferCountOnMessageInDisk;}public void setMaxTransferCountOnMessageInDisk(int maxTransferCountOnMessageInDisk) {this.maxTransferCountOnMessageInDisk = maxTransferCountOnMessageInDisk;}public int getFlushCommitLogLeastPages() {return flushCommitLogLeastPages;}public void setFlushCommitLogLeastPages(int flushCommitLogLeastPages) {this.flushCommitLogLeastPages = flushCommitLogLeastPages;}public int getFlushConsumeQueueLeastPages() {return flushConsumeQueueLeastPages;}public void setFlushConsumeQueueLeastPages(int flushConsumeQueueLeastPages) {this.flushConsumeQueueLeastPages = flushConsumeQueueLeastPages;}public int getFlushCommitLogThoroughInterval() {return flushCommitLogThoroughInterval;}public void setFlushCommitLogThoroughInterval(int flushCommitLogThoroughInterval) {this.flushCommitLogThoroughInterval = flushCommitLogThoroughInterval;}public int getFlushConsumeQueueThoroughInterval() {return flushConsumeQueueThoroughInterval;}public void setFlushConsumeQueueThoroughInterval(int flushConsumeQueueThoroughInterval) {this.flushConsumeQueueThoroughInterval = flushConsumeQueueThoroughInterval;}public int getDestroyMapedFileIntervalForcibly() {return destroyMapedFileIntervalForcibly;}public void setDestroyMapedFileIntervalForcibly(int destroyMapedFileIntervalForcibly) {this.destroyMapedFileIntervalForcibly = destroyMapedFileIntervalForcibly;}public int getFileReservedTime() {return fileReservedTime;}public void setFileReservedTime(int fileReservedTime) {this.fileReservedTime = fileReservedTime;}public int getRedeleteHangedFileInterval() {return redeleteHangedFileInterval;}public void setRedeleteHangedFileInterval(int redeleteHangedFileInterval) {this.redeleteHangedFileInterval = redeleteHangedFileInterval;}public int getAccessMessageInMemoryMaxRatio() {return accessMessageInMemoryMaxRatio;}public void setAccessMessageInMemoryMaxRatio(int accessMessageInMemoryMaxRatio) {this.accessMessageInMemoryMaxRatio = accessMessageInMemoryMaxRatio;}public boolean isMessageIndexEnable() {return messageIndexEnable;}public void setMessageIndexEnable(boolean messageIndexEnable) {this.messageIndexEnable = messageIndexEnable;}public int getMaxHashSlotNum() {return maxHashSlotNum;}public void setMaxHashSlotNum(int maxHashSlotNum) {this.maxHashSlotNum = maxHashSlotNum;}public int getMaxIndexNum() {return maxIndexNum;}public void setMaxIndexNum(int maxIndexNum) {this.maxIndexNum = maxIndexNum;}public int getMaxMsgsNumBatch() {return maxMsgsNumBatch;}public void setMaxMsgsNumBatch(int maxMsgsNumBatch) {this.maxMsgsNumBatch = maxMsgsNumBatch;}public int getHaListenPort() {return haListenPort;}public void setHaListenPort(int haListenPort) {this.haListenPort = haListenPort;}public int getHaSendHeartbeatInterval() {return haSendHeartbeatInterval;}public void setHaSendHeartbeatInterval(int haSendHeartbeatInterval) {this.haSendHeartbeatInterval = haSendHeartbeatInterval;}public int getHaHousekeepingInterval() {return haHousekeepingInterval;}public void setHaHousekeepingInterval(int haHousekeepingInterval) {this.haHousekeepingInterval = haHousekeepingInterval;}public BrokerRole getBrokerRole() {return brokerRole;}public void setBrokerRole(BrokerRole brokerRole) {this.brokerRole = brokerRole;}public void setBrokerRole(String brokerRole) {this.brokerRole = BrokerRole.valueOf(brokerRole);}public int getHaTransferBatchSize() {return haTransferBatchSize;}public void setHaTransferBatchSize(int haTransferBatchSize) {this.haTransferBatchSize = haTransferBatchSize;}public int getHaSlaveFallbehindMax() {return haSlaveFallbehindMax;}public void setHaSlaveFallbehindMax(int haSlaveFallbehindMax) {this.haSlaveFallbehindMax = haSlaveFallbehindMax;}public FlushDiskType getFlushDiskType() {return flushDiskType;}public void setFlushDiskType(FlushDiskType flushDiskType) {this.flushDiskType = flushDiskType;}public void setFlushDiskType(String type) {this.flushDiskType = FlushDiskType.valueOf(type);}public int getSyncFlushTimeout() {return syncFlushTimeout;}public void setSyncFlushTimeout(int syncFlushTimeout) {this.syncFlushTimeout = syncFlushTimeout;}public String getHaMasterAddress() {return haMasterAddress;}public void setHaMasterAddress(String haMasterAddress) {this.haMasterAddress = haMasterAddress;}public String getMessageDelayLevel() {return messageDelayLevel;}public void setMessageDelayLevel(String messageDelayLevel) {this.messageDelayLevel = messageDelayLevel;}public long getFlushDelayOffsetInterval() {return flushDelayOffsetInterval;}public void setFlushDelayOffsetInterval(long flushDelayOffsetInterval) {this.flushDelayOffsetInterval = flushDelayOffsetInterval;}public boolean isCleanFileForciblyEnable() {return cleanFileForciblyEnable;}public void setCleanFileForciblyEnable(boolean cleanFileForciblyEnable) {this.cleanFileForciblyEnable = cleanFileForciblyEnable;}public boolean isMessageIndexSafe() {return messageIndexSafe;}public void setMessageIndexSafe(boolean messageIndexSafe) {this.messageIndexSafe = messageIndexSafe;}public boolean isFlushCommitLogTimed() {return flushCommitLogTimed;}public void setFlushCommitLogTimed(boolean flushCommitLogTimed) {this.flushCommitLogTimed = flushCommitLogTimed;}public String getStorePathRootDir() {return storePathRootDir;}public void setStorePathRootDir(String storePathRootDir) {this.storePathRootDir = storePathRootDir;}public int getFlushLeastPagesWhenWarmMapedFile() {return flushLeastPagesWhenWarmMapedFile;}public void setFlushLeastPagesWhenWarmMapedFile(int flushLeastPagesWhenWarmMapedFile) {this.flushLeastPagesWhenWarmMapedFile = flushLeastPagesWhenWarmMapedFile;}public boolean isOffsetCheckInSlave() {return offsetCheckInSlave;}public void setOffsetCheckInSlave(boolean offsetCheckInSlave) {this.offsetCheckInSlave = offsetCheckInSlave;}public int getDefaultQueryMaxNum() {return defaultQueryMaxNum;}public void setDefaultQueryMaxNum(int defaultQueryMaxNum) {this.defaultQueryMaxNum = defaultQueryMaxNum;}/*** Enable transient commitLog store pool only if transientStorePoolEnable is true and the FlushDiskType is* ASYNC_FLUSH** @return <tt>true</tt> or <tt>false</tt>*/public boolean isTransientStorePoolEnable() {return transientStorePoolEnable && FlushDiskType.ASYNC_FLUSH == getFlushDiskType()&& BrokerRole.SLAVE != getBrokerRole();}public void setTransientStorePoolEnable(final boolean transientStorePoolEnable) {this.transientStorePoolEnable = transientStorePoolEnable;}public int getTransientStorePoolSize() {return transientStorePoolSize;}public void setTransientStorePoolSize(final int transientStorePoolSize) {this.transientStorePoolSize = transientStorePoolSize;}public int getCommitIntervalCommitLog() {return commitIntervalCommitLog;}public void setCommitIntervalCommitLog(final int commitIntervalCommitLog) {this.commitIntervalCommitLog = commitIntervalCommitLog;}public boolean isFastFailIfNoBufferInStorePool() {return fastFailIfNoBufferInStorePool;}public void setFastFailIfNoBufferInStorePool(final boolean fastFailIfNoBufferInStorePool) {this.fastFailIfNoBufferInStorePool = fastFailIfNoBufferInStorePool;}public boolean isUseReentrantLockWhenPutMessage() {return useReentrantLockWhenPutMessage;}public void setUseReentrantLockWhenPutMessage(final boolean useReentrantLockWhenPutMessage) {this.useReentrantLockWhenPutMessage = useReentrantLockWhenPutMessage;}public int getCommitCommitLogLeastPages() {return commitCommitLogLeastPages;}public void setCommitCommitLogLeastPages(final int commitCommitLogLeastPages) {this.commitCommitLogLeastPages = commitCommitLogLeastPages;}public int getCommitCommitLogThoroughInterval() {return commitCommitLogThoroughInterval;}public void setCommitCommitLogThoroughInterval(final int commitCommitLogThoroughInterval) {this.commitCommitLogThoroughInterval = commitCommitLogThoroughInterval;}public String getdLegerGroup() {return dLegerGroup;}public void setdLegerGroup(String dLegerGroup) {this.dLegerGroup = dLegerGroup;}public String getdLegerPeers() {return dLegerPeers;}public void setdLegerPeers(String dLegerPeers) {this.dLegerPeers = dLegerPeers;}public String getdLegerSelfId() {return dLegerSelfId;}public void setdLegerSelfId(String dLegerSelfId) {this.dLegerSelfId = dLegerSelfId;}public boolean isEnableDLegerCommitLog() {return enableDLegerCommitLog;}public void setEnableDLegerCommitLog(boolean enableDLegerCommitLog) {this.enableDLegerCommitLog = enableDLegerCommitLog;}
}

二、 消息中间件 RocketMQ 源码分析：路由注册之发送心跳包

1、路由注册 示例图：

2、路由注册：发送心跳包

RocketMQ 路由注册是通过 Broker 与 NameServer 的心跳功能实现的。Broker 启动时向集群中所有的 NameServer 发送心跳信息，每隔30s向集群中所有 NameServer 发送心跳包，NameServer 收到心跳包时会更新 brokerLiveTable 缓存中 BrokerLiveInfo 的 lastUpdataTimeStamp 信息，然后 NameServer 每隔10s扫描 brokerLiveTable，如果连续120S没有收到心跳包，NameServer 将移除 Broker 的路由信息同时关闭 Socket 连接。

3、代码：BrokerController#start

//注册Broker信息
this.registerBrokerAll(true, false, true);
//每隔30s上报Broker信息到NameServer
this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {try {BrokerController.this.registerBrokerAll(true, false, brokerConfig.isForceRegister());} catch (Throwable e) {log.error("registerBrokerAll Exception", e);}}
}, 1000 * 10, Math.max(10000, Math.min(brokerConfig.getRegisterNameServerPeriod(), 60000)), TimeUnit.MILLISECONDS);

4、代码：BrokerOuterAPI#registerBrokerAll

//获得nameServer地址信息
List<String> nameServerAddressList = this.remotingClient.getNameServerAddressList();
//遍历所有nameserver列表
if (nameServerAddressList != null && nameServerAddressList.size() > 0) {//封装请求头final RegisterBrokerRequestHeader requestHeader = new RegisterBrokerRequestHeader();requestHeader.setBrokerAddr(brokerAddr);requestHeader.setBrokerId(brokerId);requestHeader.setBrokerName(brokerName);requestHeader.setClusterName(clusterName);requestHeader.setHaServerAddr(haServerAddr);requestHeader.setCompressed(compressed);//封装请求体RegisterBrokerBody requestBody = new RegisterBrokerBody();requestBody.setTopicConfigSerializeWrapper(topicConfigWrapper);requestBody.setFilterServerList(filterServerList);final byte[] body = requestBody.encode(compressed);final int bodyCrc32 = UtilAll.crc32(body);requestHeader.setBodyCrc32(bodyCrc32);final CountDownLatch countDownLatch = new CountDownLatch(nameServerAddressList.size());for (final String namesrvAddr : nameServerAddressList) {brokerOuterExecutor.execute(new Runnable() {@Overridepublic void run() {try {//分别向NameServer注册RegisterBrokerResult result = registerBroker(namesrvAddr,oneway, timeoutMills,requestHeader,body);if (result != null) {registerBrokerResultList.add(result);}log.info("register broker[{}]to name server {} OK", brokerId, namesrvAddr);} catch (Exception e) {log.warn("registerBroker Exception, {}", namesrvAddr, e);} finally {countDownLatch.countDown();}}});}try {countDownLatch.await(timeoutMills, TimeUnit.MILLISECONDS);} catch (InterruptedException e) {}
}

5、代码：BrokerOutAPI#registerBroker

if (oneway) {try {this.remotingClient.invokeOneway(namesrvAddr, request, timeoutMills);} catch (RemotingTooMuchRequestException e) {// Ignore}return null;
}
RemotingCommand response = this.remotingClient.invokeSync(namesrvAddr, request, timeoutMills);

三、 消息中间件 RocketMQ 源码分析：路由注册之处理请求包

1、路由注册之处理请求包 示例图：

org.apache.rocketmq.namesrv.processor.DefaultRequestProcessor网路处理类解析请求类型，如果请求类型是为REGISTER_BROKER，则将请求转发到RouteInfoManager#regiesterBroker

2、代码：DefaultRequestProcessor#processRequest

//判断是注册Broker信息
case RequestCode.REGISTER_BROKER:Version brokerVersion = MQVersion.value2Version(request.getVersion());if (brokerVersion.ordinal() >= MQVersion.Version.V3_0_11.ordinal()) {return this.registerBrokerWithFilterServer(ctx, request);} else {//注册Broker信息return this.registerBroker(ctx, request);}

3、代码：DefaultRequestProcessor#registerBroker

RegisterBrokerResult result = this.namesrvController.getRouteInfoManager().registerBroker(requestHeader.getClusterName(),requestHeader.getBrokerAddr(),requestHeader.getBrokerName(),requestHeader.getBrokerId(),requestHeader.getHaServerAddr(),topicConfigWrapper,null,ctx.channel()
);

4、代码：RouteInfoManager#registerBroker

维护路由信息

//加锁
this.lock.writeLock().lockInterruptibly();
//维护clusterAddrTable
Set<String> brokerNames = this.clusterAddrTable.get(clusterName);
if (null == brokerNames) {brokerNames = new HashSet<String>();this.clusterAddrTable.put(clusterName, brokerNames);
}
brokerNames.add(brokerName);

5、维护 brokerAddrTable

//维护brokerAddrTable
BrokerData brokerData = this.brokerAddrTable.get(brokerName);
//第一次注册,则创建brokerData
if (null == brokerData) {registerFirst = true;brokerData = new BrokerData(clusterName, brokerName, new HashMap<Long, String>());this.brokerAddrTable.put(brokerName, brokerData);
}
//非第一次注册,更新Broker
Map<Long, String> brokerAddrsMap = brokerData.getBrokerAddrs();
Iterator<Entry<Long, String>> it = brokerAddrsMap.entrySet().iterator();
while (it.hasNext()) {Entry<Long, String> item = it.next();if (null != brokerAddr && brokerAddr.equals(item.getValue()) && brokerId != item.getKey()) {it.remove();}
}
String oldAddr = brokerData.getBrokerAddrs().put(brokerId, brokerAddr);
registerFirst = registerFirst || (null == oldAddr);

6、维护 topicQueueTable

//维护topicQueueTable
if (null != topicConfigWrapper && MixAll.MASTER_ID == brokerId) {if (this.isBrokerTopicConfigChanged(brokerAddr, topicConfigWrapper.getDataVersion()) || registerFirst) {ConcurrentMap<String, TopicConfig> tcTable = topicConfigWrapper.getTopicConfigTable();if (tcTable != null) {for (Map.Entry<String, TopicConfig> entry : tcTable.entrySet()) {this.createAndUpdateQueueData(brokerName, entry.getValue());}}}
}

7、代码：RouteInfoManager#createAndUpdateQueueData

private void createAndUpdateQueueData(final String brokerName, final TopicConfig topicConfig) {//创建QueueDataQueueData queueData = new QueueData();queueData.setBrokerName(brokerName);queueData.setWriteQueueNums(topicConfig.getWriteQueueNums());queueData.setReadQueueNums(topicConfig.getReadQueueNums());queueData.setPerm(topicConfig.getPerm());queueData.setTopicSynFlag(topicConfig.getTopicSysFlag());//获得topicQueueTable中队列集合List<QueueData> queueDataList = this.topicQueueTable.get(topicConfig.getTopicName());//topicQueueTable为空,则直接添加queueData到队列集合if (null == queueDataList) {queueDataList = new LinkedList<QueueData>();queueDataList.add(queueData);this.topicQueueTable.put(topicConfig.getTopicName(), queueDataList);log.info("new topic registered, {} {}", topicConfig.getTopicName(), queueData);} else {//判断是否是新的队列boolean addNewOne = true;Iterator<QueueData> it = queueDataList.iterator();while (it.hasNext()) {QueueData qd = it.next();//如果brokerName相同,代表不是新的队列if (qd.getBrokerName().equals(brokerName)) {if (qd.equals(queueData)) {addNewOne = false;} else {log.info("topic changed, {} OLD: {} NEW: {}", topicConfig.getTopicName(), qd,queueData);it.remove();}}}//如果是新的队列,则添加队列到queueDataListif (addNewOne) {queueDataList.add(queueData);}}
}

8、维护 brokerLiveTable

//维护brokerLiveTable
BrokerLiveInfo prevBrokerLiveInfo = this.brokerLiveTable.put(brokerAddr,new BrokerLiveInfo(System.currentTimeMillis(),topicConfigWrapper.getDataVersion(),channel,haServerAddr));

9、维护 filterServerList

//维护filterServerList
if (filterServerList != null) {if (filterServerList.isEmpty()) {this.filterServerTable.remove(brokerAddr);} else {this.filterServerTable.put(brokerAddr, filterServerList);}
}if (MixAll.MASTER_ID != brokerId) {String masterAddr = brokerData.getBrokerAddrs().get(MixAll.MASTER_ID);if (masterAddr != null) {BrokerLiveInfo brokerLiveInfo = this.brokerLiveTable.get(masterAddr);if (brokerLiveInfo != null) {result.setHaServerAddr(brokerLiveInfo.getHaServerAddr());result.setMasterAddr(masterAddr);}}
}

四、 消息中间件 RocketMQ 源码分析：路由删除

1、路由删除

Broker每隔30s向NameServer发送一个心跳包，心跳包包含BrokerId，Broker地址，Broker名称，Broker所属集群名称、Broker关联的FilterServer列表。但是如果Broker宕机，NameServer无法收到心跳包，此时NameServer如何来剔除这些失效的Broker呢？NameServer会每隔10s扫描brokerLiveTable状态表，如果BrokerLive的lastUpdateTimestamp的时间戳距当前时间超过120s，则认为Broker失效，移除该Broker，关闭与Broker连接，同时更新topicQueueTable、brokerAddrTable、brokerLiveTable、filterServerTable。

2、RocketMQ 有两个触发点来删除路由信息：

• NameServer 定期扫描 brokerLiveTable 检测上次心跳包与当前系统的时间差，如果时间超过120s，则需要移除 broker。
• Broker 在正常关闭的情况下，会执行 unregisterBroker 指令

这两种方式路由删除的方法都是一样的，就是从相关路由表中删除与该 broker 相关的信息。

3、代码：NamesrvController#initialize

//每隔10s扫描一次为活跃Broker
this.scheduledExecutorService.scheduleAtFixedRate(new Runnable() {@Overridepublic void run() {NamesrvController.this.routeInfoManager.scanNotActiveBroker();}
}, 5, 10, TimeUnit.SECONDS);

4、代码：RouteInfoManager#scanNotActiveBroker

public void scanNotActiveBroker() {//获得brokerLiveTableIterator<Entry<String, BrokerLiveInfo>> it = this.brokerLiveTable.entrySet().iterator();//遍历brokerLiveTablewhile (it.hasNext()) {Entry<String, BrokerLiveInfo> next = it.next();long last = next.getValue().getLastUpdateTimestamp();//如果收到心跳包的时间距当时时间是否超过120sif ((last + BROKER_CHANNEL_EXPIRED_TIME) < System.currentTimeMillis()) {//关闭连接RemotingUtil.closeChannel(next.getValue().getChannel());//移除brokerit.remove();//维护路由表this.onChannelDestroy(next.getKey(), next.getValue().getChannel());}}
}

5、代码：RouteInfoManager#onChannelDestroy

//申请写锁,根据brokerAddress从brokerLiveTable和filterServerTable移除
this.lock.writeLock().lockInterruptibly();
this.brokerLiveTable.remove(brokerAddrFound);
this.filterServerTable.remove(brokerAddrFound);

6、维护 brokerAddrTable

//维护brokerAddrTable
String brokerNameFound = null;
boolean removeBrokerName = false;
Iterator<Entry<String, BrokerData>> itBrokerAddrTable =this.brokerAddrTable.entrySet().iterator();
//遍历brokerAddrTable
while (itBrokerAddrTable.hasNext() && (null == brokerNameFound)) {BrokerData brokerData = itBrokerAddrTable.next().getValue();//遍历broker地址Iterator<Entry<Long, String>> it = brokerData.getBrokerAddrs().entrySet().iterator();while (it.hasNext()) {Entry<Long, String> entry = it.next();Long brokerId = entry.getKey();String brokerAddr = entry.getValue();//根据broker地址移除brokerAddrif (brokerAddr.equals(brokerAddrFound)) {brokerNameFound = brokerData.getBrokerName();it.remove();log.info("remove brokerAddr[{}, {}] from brokerAddrTable, because channel destroyed",brokerId, brokerAddr);break;}}//如果当前主题只包含待移除的broker,则移除该topicif (brokerData.getBrokerAddrs().isEmpty()) {removeBrokerName = true;itBrokerAddrTable.remove();log.info("remove brokerName[{}] from brokerAddrTable, because channel destroyed",brokerData.getBrokerName());}
}

7、维护 clusterAddrTable

//维护clusterAddrTable
if (brokerNameFound != null && removeBrokerName) {Iterator<Entry<String, Set<String>>> it = this.clusterAddrTable.entrySet().iterator();//遍历clusterAddrTablewhile (it.hasNext()) {Entry<String, Set<String>> entry = it.next();//获得集群名称String clusterName = entry.getKey();//获得集群中brokerName集合Set<String> brokerNames = entry.getValue();//从brokerNames中移除brokerNameFoundboolean removed = brokerNames.remove(brokerNameFound);if (removed) {log.info("remove brokerName[{}], clusterName[{}] from clusterAddrTable, because channel destroyed",brokerNameFound, clusterName);if (brokerNames.isEmpty()) {log.info("remove the clusterName[{}] from clusterAddrTable, because channel destroyed and no broker in this cluster",clusterName);//如果集群中不包含任何broker,则移除该集群it.remove();}break;}}
}

8、维护 topicQueueTable队列

//维护topicQueueTable队列
if (removeBrokerName) {//遍历topicQueueTableIterator<Entry<String, List<QueueData>>> itTopicQueueTable =this.topicQueueTable.entrySet().iterator();while (itTopicQueueTable.hasNext()) {Entry<String, List<QueueData>> entry = itTopicQueueTable.next();//主题名称String topic = entry.getKey();//队列集合List<QueueData> queueDataList = entry.getValue();//遍历该主题队列Iterator<QueueData> itQueueData = queueDataList.iterator();while (itQueueData.hasNext()) {//从队列中移除为活跃broker信息QueueData queueData = itQueueData.next();if (queueData.getBrokerName().equals(brokerNameFound)) {itQueueData.remove();log.info("remove topic[{} {}], from topicQueueTable, because channel destroyed",topic, queueData);}}//如果该topic的队列为空,则移除该topicif (queueDataList.isEmpty()) {itTopicQueueTable.remove();log.info("remove topic[{}] all queue, from topicQueueTable, because channel destroyed",topic);}}
}

9、释放写锁

//释放写锁
finally {this.lock.writeLock().unlock();
}

五、 消息中间件 RocketMQ 源码分析：路由发现和小结

1、路由发现

RocketMQ 路由发现是非实时的，当 Topic 路由出现变化后，NameServer 不会主动推送给客户端，而是由客户端定时拉取主题最新的路由。

2、代码：DefaultRequestProcessor#getRouteInfoByTopic

public RemotingCommand getRouteInfoByTopic(ChannelHandlerContext ctx,RemotingCommand request) throws RemotingCommandException {final RemotingCommand response = RemotingCommand.createResponseCommand(null);final GetRouteInfoRequestHeader requestHeader =(GetRouteInfoRequestHeader) request.decodeCommandCustomHeader(GetRouteInfoRequestHeader.class);//调用RouteInfoManager的方法,从路由表topicQueueTable、brokerAddrTable、filterServerTable中分别填充TopicRouteData的List<QueueData>、List<BrokerData>、filterServerTopicRouteData topicRouteData = this.namesrvController.getRouteInfoManager().pickupTopicRouteData(requestHeader.getTopic());//如果找到主题对应你的路由信息并且该主题为顺序消息，则从NameServer KVConfig中获取关于顺序消息相关的配置填充路由信息if (topicRouteData != null) {if (this.namesrvController.getNamesrvConfig().isOrderMessageEnable()) {String orderTopicConf =this.namesrvController.getKvConfigManager().getKVConfig(NamesrvUtil.NAMESPACE_ORDER_TOPIC_CONFIG,requestHeader.getTopic());topicRouteData.setOrderTopicConf(orderTopicConf);}byte[] content = topicRouteData.encode();response.setBody(content);response.setCode(ResponseCode.SUCCESS);response.setRemark(null);return response;}response.setCode(ResponseCode.TOPIC_NOT_EXIST);response.setRemark("No topic route info in name server for the topic: " + requestHeader.getTopic()+ FAQUrl.suggestTodo(FAQUrl.APPLY_TOPIC_URL));return response;
}

3、 NameServer 小结

# 消息中间件 RocketMQ 高级功能和源码分析（四）