一、客户端自动注册实例流程

1.首先客户端需要引入服务发现包

  com.alibaba.cloud
  spring-cloud-starter-alibaba-nacos-discovery
  2.2.6.RELEASE

2.  NacosServiceRegistryAutoConfiguration 配置类

此类在spring-cloud-starter-alibaba-nacos-discovery客户包里面会自动在当前SPRINGBOOT容器注册

。

3.此配置类最核心的实体注册类为NacosAutoServiceRegistration，

查看此类的继承属性

发现此类继承于spring cloud common的AbstractAutoServiceRegistration抽象继承类，此类包含了与SPRING对接的一系列自动注册功能。并且实现了ApplicationListener接口，所以会监听SPRING WEB事件。

4.监听ServletWebServerInitializedEvent事件

5.AbstractAutoServiceRegistration自动更新服务端口

6.NacosAutoServiceRegistration更新端口，以及配置里面的分组，集群等信息。

7.跳到父类的注册方法

8.最终调用了NacosServiceRegistry.registry

9.接着触发了NacosNamingService.registerInstance

注意这里，如果是临时节点，还会触发客户端定时发送心跳。

这里已经跳到了nacos-client-1.4.2的包，相当于是具体注册中心客户端的实现。

10.接着跳到了NamingProxy.registerService，

11.最终发起HTTP调用请求，NamingProxy

public String reqApi(String api, Map params, Map body, List servers,
            String method) throws NacosException {
        
        params.put(CommonParams.NAMESPACE_ID, getNamespaceId());
        
        if (CollectionUtils.isEmpty(servers) && StringUtils.isBlank(nacosDomain)) {
            throw new NacosException(NacosException.INVALID_PARAM, "no server available");
        }
        
        NacosException exception = new NacosException();
        
        if (StringUtils.isNotBlank(nacosDomain)) {
            for (int i = 0; i < maxRetry; i++) {
                try {
                    return callServer(api, params, body, nacosDomain, method);
                } catch (NacosException e) {
                    exception = e;
                    if (NAMING_LOGGER.isDebugEnabled()) {
                        NAMING_LOGGER.debug("request {} failed.", nacosDomain, e);
                    }
                }
            }
        } else {
            Random random = new Random(System.currentTimeMillis());
            int index = random.nextInt(servers.size());
            
            for (int i = 0; i < servers.size(); i++) {
                String server = servers.get(index);
                try {
                    return callServer(api, params, body, server, method);
                } catch (NacosException e) {
                    exception = e;
                    if (NAMING_LOGGER.isDebugEnabled()) {
                        NAMING_LOGGER.debug("request {} failed.", server, e);
                    }
                }
                index = (index + 1) % servers.size();
            }
        }
        
        NAMING_LOGGER.error("request: {} failed, servers: {}, code: {}, msg: {}", api, servers, exception.getErrCode(),
                exception.getErrMsg());
        
        throw new NacosException(exception.getErrCode(),
                "failed to req API:" + api + " after all servers(" + servers + ") tried: " + exception.getMessage());
        
    }
    

如果是带域名，或者单机运行，则直接发起HTTP调用，如果是集群NACOS服务列表，则随机找到一台NACOS服务器发起请求。

12.客户端注册完成

二、服务端注册流程

1.下载1.4.2源码，本地启动

-Dnacos.standalone=true -Dnacos.home=e: acos

启动类为com.alibaba.nacos.Nacos

2.服务端是SPRINGBOOT项目，找到控制器接口

3.首先进入InstanceController.register

4.进入ServiceManager.register，此类就是客户端服务实例的管理类，保存客户端实例的注册表。

@Component
public class ServiceManager implements RecordListener {
    
    /**
     * Map(namespace, Map(group::serviceName, Service)). 真正的注册表
     */
    private final Map> serviceMap = new ConcurrentHashMap<>();
    
    private final LinkedBlockingDeque toBeUpdatedServicesQueue = new LinkedBlockingDeque<>(1024 * 1024);
    
    private final Synchronizer synchronizer = new ServiceStatusSynchronizer();
    
    private final Lock lock = new ReentrantLock();
    
    @Resource(name = "consistencyDelegate")
    //一致性协调协议 
    private ConsistencyService consistencyService;
    
    private final SwitchDomain switchDomain;
    
    private final DistroMapper distroMapper;
    
    private final ServerMemberManager memberManager;
    
    private final PushService pushService;
    
    private final RaftPeerSet raftPeerSet;

5.如果服务不存在，则会创建一个空的Service对象。

注意，此时的servicename已经带了分组了。

6.调试日志输出等级

因为服务端源码有多个线程协作，调试比较麻烦，建议看代码，然后加日志打印输出。

可以把naming的LOGBACK日志输出等级调成DEBUG

    
    

    
        ${LOG_HOME}/naming-server.log
        true
        
            ${LOG_HOME}/naming-server.log.%d{yyyy-MM-dd}.%i
            2GB
            15
            7GB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    
    
        ${LOG_HOME}/naming-raft.log
        true
        
            ${LOG_HOME}/naming-raft.log.%d{yyyy-MM-dd}.%i
            20MB
            15
            128MB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    
    
        ${LOG_HOME}/naming-event.log
        true
        
            ${LOG_HOME}/naming-event.log.%d{yyyy-MM-dd}.%i
            20MB
            15
            128MB
            true
        
        
            %date %level [%C:%M:%L] %msg%n%n
            UTF-8
        
    
    
        ${LOG_HOME}/naming-push.log
        true
        
            ${LOG_HOME}/naming-push.log.%d{yyyy-MM-dd}.%i
            20MB
            15
            128MB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    
    
        ${LOG_HOME}/naming-rt.log
        true
        
            ${LOG_HOME}/naming-rt.log.%d{yyyy-MM-dd}.%i
            1GB
            15
            3GB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-performance.log
        true
        
            ${LOG_HOME}/naming-performance.log.%d{yyyy-MM-dd}.%i
            50MB
            15
            512MB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-router.log
        true
        
            ${LOG_HOME}/naming-router.log.%d{yyyy-MM-dd}.%i
            2GB
            15
            7GB
            true
        
        
            %date|%msg%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-cache.log
        true
        
            ${LOG_HOME}/naming-cache.log.%d{yyyy-MM-dd}.%i
            1GB
            15
            3GB
            true
        
        
            %date|%msg%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-device.log
        true
        
            ${LOG_HOME}/naming-device.log.%d{yyyy-MM-dd}.%i
            2GB
            15
            7GB
            true
        
        
            %date|%msg%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-tag.log
        true
        
            ${LOG_HOME}/naming-tag.log.%d{yyyy-MM-dd}.%i
            1GB
            15
            3GB
            true
        
        
            %date %level %msg%n%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-debug.log
        true
        
            ${LOG_HOME}/naming-debug.log.%d{yyyy-MM-dd}.%i
            20MB
            15
            128MB
            true
        
        
            %date %level %msg%n%n
            UTF-8
        
    

    
        ${LOG_HOME}/naming-distro.log
        true
        
            ${LOG_HOME}/naming-distro.log.%d{yyyy-MM-dd}.%i
            1GB
            7
            3GB
            true
        
        
            %date %level  [%C:%M:%L] %msg%n%n
            UTF-8
        
    

    
        
            %date %level [%thread] [%C:%M:%L] %msg%n%n
            UTF-8
        
    

    
        
        
        
    
    
        
        
        
    
    
        
        
        
    
    
        
        
        
    
    
        
        
        
    
    
        
        
        
    
    
        
        
    
    
        
        
    
    
        
        
    
    
        
        
        
    

7.业务日志APPENDER类分析

有一个统一的日志输出类，将各种业务分别用不同的APPENDER对象输出

public class Loggers {
    
//客户端推送
    public static final Logger PUSH = LoggerFactory.getLogger("com.alibaba.nacos.naming.push");
    
//心跳检测
    public static final Logger CHECK_RT = LoggerFactory.getLogger("com.alibaba.nacos.naming.rt");
    
//服务相关业务
    public static final Logger SRV_LOG = LoggerFactory.getLogger("com.alibaba.nacos.naming.main");
    
//通知事件，如新服务注册，变更，下线等。
    public static final Logger EVT_LOG = LoggerFactory.getLogger("com.alibaba.nacos.naming.event");
    

//一致性RAFT系统 CP
    public static final Logger RAFT = LoggerFactory.getLogger("com.alibaba.nacos.naming.raft");
    
//一致性协议 ，AP
    public static final Logger DISTRO = LoggerFactory.getLogger("com.alibaba.nacos.naming.distro");
    

//性能分析
    public static final Logger PERFORMANCE_LOG = LoggerFactory.getLogger("com.alibaba.nacos.naming.performance");

8.注册后的serviceMap结构如下:

单个Service的示例结构如下：

{
    "name":"mall@@joyday",
    "protectThreshold":0,
    "groupName":"mall",
    "metadata":{

    },
    "finalizeCount":2,
    "owners":[

    ],
    "resetWeight":false,
    "enabled":true,
    "selector":{
        "type":"none"
    },
    "namespaceId":"public",
    "ipDeleteTimeout":30000,
    "lastModifiedMillis":1722671874301,
    "checksum":"f936119262bea62fbfbb16c10f955e96",
    "clusterMap":{
        "beijing":{
            "serviceName":"mall@@joyday",
            "name":"beijing",
            "healthChecker":{
                "type":"TCP"
            },
            "defaultPort":80,
            "defaultCheckPort":80,
            "useIPPort4Check":true,
            "metadata":{

            },
            "sitegroup":"",
            "defCkport":80,
            "empty":false,
            "defIPPort":80
        }
    },
    "empty":false
}

9.进入ServiceMananger.addInstance，查看保存到一致性服务的dataStore中的KEY，为命名空间+分组+服务名，值为Instances，这个对象里面又包含了一个instance的LIST.

10.进入ServiceMananger.updateIpAddresses,可以更详细看到dataMap,这个就是把dataMap当作旧的注册表，把二级缓存Service中的ClusterMap作为新对象进行比较，从而把新的实例加进到datamap中。

11.进入到DistroConsistencyServiceImpl.onPut，查看单个dataTum

12.Service为其中一个listener,异步收到消息。

13.再将变化的Instances中的实例保存重新刷新到Service的clusterMap中，Service.

updateIPs

注意在这里，会给pushService发出通知，通知相关客户端此服务的实例发生变化。

14.我们再启动一个新的实例，查看clusterMap,dataStore的变化。看到端口变成了8066

15.第一次8064服务启动日志

2024-08-03 16:40:36,500 DEBUG [http-nio-8848-exec-5] [com.alibaba.nacos.naming.controllers.InstanceController:doSrvIpxt:691] no instance to serve for service: mall@@joyday

2024-08-03 16:40:37,151 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:createServiceIfAbsent:471] creating empty service public:mall@@joyday

2024-08-03 16:40:37,158 DEBUG [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":0,"owners":[],"protectThreshold":0.0,"clusters":[]}

2024-08-03 16:40:37,162 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.consistency.persistent.raft.RaftCore:listen:962] add listener: com.alibaba.nacos.naming.iplist.public##mall@@joyday

2024-08-03 16:40:37,251 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:putServiceAndInit:902] [NEW-SERVICE] {"name":"mall@@joyday","protectThreshold":0.0,"groupName":"mall","metadata":{},"finalizeCount":0,"owners":[],"resetWeight":false,"enabled":true,"selector":{"type":"none"},"namespaceId":"public","ipDeleteTimeout":30000,"lastModifiedMillis":1722674437153,"checksum":"45e19250c6a2ded80ed14b5aca7a6ee4","clusterMap":{},"empty":true}

2024-08-03 16:40:37,251 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:createServiceIfAbsent:491] createServiceIfAbsent end getClusterMap {}

2024-08-03 16:40:37,251 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:652]  addInstance key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday

2024-08-03 16:40:37,252 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:806]  updateIpAddresses before  currentIPs:[],instanceMap:{}

2024-08-03 16:40:37,257 WARN [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:815] cluster: beijing not found, ip: {"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722674437147,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}, will create new cluster with default configuration.

2024-08-03 16:40:37,259 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:839]  updateIpAddresses after  currentIPs:[],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing}

2024-08-03 16:40:37,259 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:661]  addInstance after addIpAddresses new instanceList:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing]

2024-08-03 16:40:37,259 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:put:108]  distro put key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday,value:{"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722674437147,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:40:37,260 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:132] createServiceIfAbsent start dataStore {}

2024-08-03 16:40:37,260 INFO [http-nio-8848-exec-7] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:141] createServiceIfAbsent end dataStore {com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday=com.alibaba.nacos.naming.consistency.Datum@72f532aa}

2024-08-03 16:40:37,263 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:onChange:178] [NACOS-RAFT] datum service is changed, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, value: {"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722674437147,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:40:37,263 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:237] updateIPs before, instances: [10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing], ephemeral: true

2024-08-03 16:40:37,264 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Cluster:updateIps:277] mall@@joyday {SYNC} {IP-NEW} cluster: beijing, new ips size: 1, content: [10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing]

2024-08-03 16:40:37,266 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:290] [IP-UPDATED] namespace: public, service: mall@@joyday, ips: 10.6.33.23:8064_true,

2024-08-03 16:40:37,269 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":1,"owners":[],"protectThreshold":0.0,"clusters":[{"healthChecker":{},"defIPPort":80,"defCkport":80,"name":"beijing","useIPPort4Check":true,"sitegroup":""}]}

2024-08-03 16:40:37,269 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl$Notifier:handle:447] [NACOS-DISTRO] datum change notified, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, listener count: 1, action: CHANGE

2024-08-03 16:40:38,267 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:127] mall@@joyday is changed, add it to push queue.

2024-08-03 16:40:38,272 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:166] serviceName: mall@@joyday changed, schedule push for: 10.6.33.23:62522, agent: Nacos-Java-Client:v1.4.2, key: 10.6.33.23,62522,373503109817900

2024-08-03 16:40:38,272 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:udpPush:614] send udp packet: 10.6.33.23,62522,373503109817900

2024-08-03 16:40:38,278 INFO [com.alibaba.nacos.naming.push.receiver] [com.alibaba.nacos.naming.push.PushService$Receiver:run:687] received ack: {"type": "push-ack", "lastRefTime":"373503109817900", "data":""} from: 10.6.33.23:62522, cost: 6 ms, unacked: 0, total push: 1

dataStore-dataTum

 key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday

{com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday

com.alibaba.nacos.naming.consistency.Datum@72f532aa}

{
    "instanceList":[
        {
            "instanceId":"10.6.33.23#8064#beijing#mall@@joyday",
            "ip":"10.6.33.23",
            "port":8064,
            "weight":1,
            "healthy":true,
            "enabled":true,
            "ephemeral":true,
            "clusterName":"beijing",
            "serviceName":"mall@@joyday",
            "metadata":{
                "preserved.register.source":"SPRING_CLOUD"
            },
            "lastBeat":1722674437147,
            "marked":false,
            "app":"unknown",
            "instanceHeartBeatInterval":5000,
            "instanceHeartBeatTimeOut":15000,
            "ipDeleteTimeout":30000
        }
    ]
}

servicemap结构

{public={mall@@joyday=Service{name='mall@@joyday', protectThreshold=0.0, appName='null', groupName='mall', metadata={}}}}

16.第二次8066服务启动日志

2024-08-03 16:53:45,870 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:createServiceIfAbsent:492] createServiceIfAbsent end getClusterMap {beijing=com.alibaba.nacos.naming.core.Cluster@f27590dd}

2024-08-03 16:53:45,870 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:653]  addInstance key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday

2024-08-03 16:53:45,870 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:656]  addInstance ,serviceMap:{public={mall@@joyday=Service{name='mall@@joyday', protectThreshold=0.0, appName='null', groupName='mall', metadata={}}}}

2024-08-03 16:53:45,871 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:809]  updateIpAddresses before  currentIPs:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing}

2024-08-03 16:53:45,871 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:842]  updateIpAddresses after  currentIPs:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing=10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing}

2024-08-03 16:53:45,872 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:664]  addInstance after addIpAddresses new instanceList:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing]

2024-08-03 16:53:45,872 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:put:108]  distro put key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday,value:{"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20880/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20880&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=38352&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675134397&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675221548,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000},{"instanceId":"10.6.33.23#8066#beijing#mall@@joyday","ip":"10.6.33.23","port":8066,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675225870,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:53:45,872 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:132] createServiceIfAbsent start dataStore {com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday=com.alibaba.nacos.naming.consistency.Datum@41cab4c3}

2024-08-03 16:53:45,872 INFO [http-nio-8848-exec-6] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:141] createServiceIfAbsent end dataStore {com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday=com.alibaba.nacos.naming.consistency.Datum@36aea586}

2024-08-03 16:53:45,872 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:onChange:178] [NACOS-RAFT] datum service is changed, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, value: {"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20880/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20880&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=38352&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675134397&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675221548,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000},{"instanceId":"10.6.33.23#8066#beijing#mall@@joyday","ip":"10.6.33.23","port":8066,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675225870,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:53:45,873 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:237] updateIPs before, instances: [10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing], ephemeral: true

2024-08-03 16:53:45,873 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Cluster:updateIps:277] mall@@joyday {SYNC} {IP-NEW} cluster: beijing, new ips size: 1, content: [10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing]

2024-08-03 16:53:45,873 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:290] [IP-UPDATED] namespace: public, service: mall@@joyday, ips: 10.6.33.23:8064_true,10.6.33.23:8066_true,

2024-08-03 16:53:45,873 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":2,"owners":[],"protectThreshold":0.0,"clusters":[{"healthChecker":{},"defIPPort":80,"defCkport":80,"name":"beijing","useIPPort4Check":true,"sitegroup":""}]}

2024-08-03 16:53:45,873 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl$Notifier:handle:447] [NACOS-DISTRO] datum change notified, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, listener count: 1, action: CHANGE

2024-08-03 16:53:46,566 DEBUG [http-nio-8848-exec-8] [com.alibaba.nacos.naming.controllers.InstanceController:beat:494] [CLIENT-BEAT] full arguments: beat: null, serviceName: mall@@joyday

2024-08-03 16:53:46,878 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:127] mall@@joyday is changed, add it to push queue.

2024-08-03 16:53:46,879 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:166] serviceName: mall@@joyday changed, schedule push for: 10.6.33.23:53206, agent: Nacos-Java-Client:v1.4.2, key: 10.6.33.23,53206,374291714306500

2024-08-03 16:53:46,879 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:udpPush:614] send udp packet: 10.6.33.23,53206,374291714306500

2024-08-03 16:53:46,880 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:166] serviceName: mall@@joyday changed, schedule push for: 10.6.33.23:62806, agent: Nacos-Java-Client:v1.4.2, key: 10.6.33.23,62806,374291714306500

2024-08-03 16:53:46,881 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:udpPush:614] send udp packet: 10.6.33.23,62806,374291714306500

2024-08-03 16:53:46,885 INFO [com.alibaba.nacos.naming.push.receiver] [com.alibaba.nacos.naming.push.PushService$Receiver:run:687] received ack: {"type": "push-ack", "lastRefTime":"374291714306500", "data":""} from: 10.6.33.23:62806, cost: 4 ms, unacked: 1, total push: 4

2024-08-03 16:53:46,885 INFO [com.alibaba.nacos.naming.push.receiver] [com.alibaba.nacos.naming.push.PushService$Receiver:run:687] received ack: {"type": "push-ack", "lastRefTime":"374291714306500", "data":""} from: 10.6.33.23:53206, cost: 6 ms, unacked: 0, total push: 4

2024-08-03 16:53:47,494 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:createServiceIfAbsent:492] createServiceIfAbsent end getClusterMap {beijing=com.alibaba.nacos.naming.core.Cluster@f27590dd}

2024-08-03 16:53:47,494 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:653]  addInstance key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday

2024-08-03 16:53:47,495 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:656]  addInstance ,serviceMap:{public={mall@@joyday=Service{name='mall@@joyday', protectThreshold=0.0, appName='null', groupName='mall', metadata={}}}}

2024-08-03 16:53:47,495 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:809]  updateIpAddresses before  currentIPs:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing=10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing}

2024-08-03 16:53:47,496 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:updateIpAddresses:842]  updateIpAddresses after  currentIPs:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing=10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing}

2024-08-03 16:53:47,496 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.core.ServiceManager:addInstance:664]  addInstance after addIpAddresses new instanceList:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing]

2024-08-03 16:53:47,496 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:put:108]  distro put key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday,value:{"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20880/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20880&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=38352&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675134397&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675226566,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000},{"instanceId":"10.6.33.23#8066#beijing#mall@@joyday","ip":"10.6.33.23","port":8066,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20881/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20881&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=44484&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675226758&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675227493,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:53:47,496 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:132] createServiceIfAbsent start dataStore {com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday=com.alibaba.nacos.naming.consistency.Datum@36aea586}

2024-08-03 16:53:47,497 INFO [http-nio-8848-exec-9] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl:onPut:141] createServiceIfAbsent end dataStore {com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday=com.alibaba.nacos.naming.consistency.Datum@6ee0d505}

2024-08-03 16:53:47,497 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:onChange:178] [NACOS-RAFT] datum service is changed, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, value: {"instanceList":[{"instanceId":"10.6.33.23#8064#beijing#mall@@joyday","ip":"10.6.33.23","port":8064,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20880/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20880&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=38352&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675134397&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675226566,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000},{"instanceId":"10.6.33.23#8066#beijing#mall@@joyday","ip":"10.6.33.23","port":8066,"weight":1.0,"healthy":true,"enabled":true,"ephemeral":true,"clusterName":"beijing","serviceName":"mall@@joyday","metadata":{"dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20881/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20881&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=44484&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675226758&version=1.0.0" ]","dubbo.metadata.revision":"0","preserved.register.source":"SPRING_CLOUD"},"lastBeat":1722675227493,"marked":false,"app":"unknown","instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000}]}

2024-08-03 16:53:47,497 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:237] updateIPs before, instances: [10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing], ephemeral: true

2024-08-03 16:53:47,497 INFO [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:updateIPs:290] [IP-UPDATED] namespace: public, service: mall@@joyday, ips: 10.6.33.23:8064_true,10.6.33.23:8066_true,

2024-08-03 16:53:47,498 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":2,"owners":[],"protectThreshold":0.0,"clusters":[{"healthChecker":{},"defIPPort":80,"defCkport":80,"name":"beijing","useIPPort4Check":true,"sitegroup":""}]}

2024-08-03 16:53:47,498 DEBUG [com.alibaba.nacos.naming.distro.notifier.0] [com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl$Notifier:handle:447] [NACOS-DISTRO] datum change notified, key: com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday, listener count: 1, action: CHANGE

2024-08-03 16:53:47,674 DEBUG [com.alibaba.nacos.naming.service.worker.0] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":2,"owners":[],"protectThreshold":0.0,"clusters":[{"healthChecker":{},"defIPPort":80,"defCkport":80,"name":"beijing","useIPPort4Check":true,"sitegroup":""}]}

2024-08-03 16:53:48,501 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:127] mall@@joyday is changed, add it to push queue.

2024-08-03 16:53:48,501 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:166] serviceName: mall@@joyday changed, schedule push for: 10.6.33.23:53206, agent: Nacos-Java-Client:v1.4.2, key: 10.6.33.23,53206,374293336465400

2024-08-03 16:53:48,501 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:udpPush:614] send udp packet: 10.6.33.23,53206,374293336465400

2024-08-03 16:53:48,502 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:lambda$onApplicationEvent$1:166] serviceName: mall@@joyday changed, schedule push for: 10.6.33.23:62806, agent: Nacos-Java-Client:v1.4.2, key: 10.6.33.23,62806,374293336465400

2024-08-03 16:53:48,502 INFO [com.alibaba.nacos.naming.push.udpSender.0] [com.alibaba.nacos.naming.push.PushService:udpPush:614] send udp packet: 10.6.33.23,62806,374293336465400

2024-08-03 16:53:48,504 INFO [com.alibaba.nacos.naming.push.receiver] [com.alibaba.nacos.naming.push.PushService$Receiver:run:687] received ack: {"type": "push-ack", "lastRefTime":"374293336465400", "data":""} from: 10.6.33.23:53206, cost: 3 ms, unacked: 1, total push: 6

2024-08-03 16:53:48,505 INFO [com.alibaba.nacos.naming.push.receiver] [com.alibaba.nacos.naming.push.PushService$Receiver:run:687] received ack: {"type": "push-ack", "lastRefTime":"374293336465400", "data":""} from: 10.6.33.23:62806, cost: 3 ms, unacked: 0, total push: 6

2024-08-03 16:53:51,570 DEBUG [http-nio-8848-exec-4] [com.alibaba.nacos.naming.controllers.InstanceController:beat:494] [CLIENT-BEAT] full arguments: beat: null, serviceName: mall@@joyday

2024-08-03 16:53:52,685 DEBUG [com.alibaba.nacos.naming.service.worker.0] [com.alibaba.nacos.naming.core.Service:recalculateChecksum:549] service to json: {"invalidIPCount":0,"name":"mall@@joyday","ipCount":2,"owners":[],"protectThreshold":0.0,"clusters":[{"healthChecker":{},"defIPPort":80,"defCkport":80,"name":"beijing","useIPPort4Check":true,"sitegroup":""}]}

 updateIpAddresses after  currentIPs:[10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing],instanceMap:{10.6.33.23:8064:unknown:beijing=10.6.33.23:8064:unknown:beijing_1.0_true_false_beijing, 10.6.33.23:8066:unknown:beijing=10.6.33.23:8066:unknown:beijing_1.0_true_false_beijing}

可以看到经过updateIpAddresses  多了一个实例，

最终写入distro后，也会多了一个实例

distro put key:com.alibaba.nacos.naming.iplist.ephemeral.public##mall@@joyday,value:

{
    "instanceList":[
        {
            "instanceId":"10.6.33.23#8064#beijing#mall@@joyday",
            "ip":"10.6.33.23",
            "port":8064,
            "weight":1,
            "healthy":true,
            "enabled":true,
            "ephemeral":true,
            "clusterName":"beijing",
            "serviceName":"mall@@joyday",
            "metadata":{
                "dubbo.metadata-service.urls":"[ "dubbo://10.6.33.23:20880/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=joyday&bind.ip=10.6.33.23&bind.port=20880&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&group=joyday&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=38352&qos.enable=false&release=2.7.8&revision=2.2.6.RELEASE&side=provider×tamp=1722675134397&version=1.0.0" ]",
                "dubbo.metadata.revision":"0",
                "preserved.register.source":"SPRING_CLOUD"
            },
            "lastBeat":1722675221548,
            "marked":false,
            "app":"unknown",
            "instanceHeartBeatInterval":5000,
            "instanceHeartBeatTimeOut":15000,
            "ipDeleteTimeout":30000
        },
        {
            "instanceId":"10.6.33.23#8066#beijing#mall@@joyday",
            "ip":"10.6.33.23",
            "port":8066,
            "weight":1,
            "healthy":true,
            "enabled":true,
            "ephemeral":true,
            "clusterName":"beijing",
            "serviceName":"mall@@joyday",
            "metadata":{
                "preserved.register.source":"SPRING_CLOUD"
            },
            "lastBeat":1722675225870,
            "marked":false,
            "app":"unknown",
            "instanceHeartBeatInterval":5000,
            "instanceHeartBeatTimeOut":15000,
            "ipDeleteTimeout":30000
        }
    ]
}

三、注册表数据结构

1.数据结构思维导图