总结:

自动配置注册:

EurekaAutoServiceRegistration::start(在DefaultLifecycleProcessor中调用):

1. 先检查port;
2. 如果没有启动过并且非安全的端口大于0,则进行注册(通过调用org.springframework.cloud.client.serviceregistry.ServiceRegistry接口的实例).
3. 注册事件;
4. 设置运行状态


注册:

org.springframework.cloud.client.serviceregistry.ServiceRegistry->注册和取消注册
->
EurekaServiceRegistry::register从参数获取EurekaRegistration,
并初始化EurekaRegistration,通过ApplicationInfoManager设置实例的状态,
如果有healthCheck则注册healthCheck.

自动配置取消注册:

1. 调用org.springframework.cloud.client.serviceregistry.ServiceRegistry接口的实例的deregister方法.
2. 设置状态

取消注册(EurekaServiceRegistry::deregister):

将状态设置成DOWN.


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DiscoveryClient::getInstances根据serviceId获取实例
-> EurekaDiscoveryClient::getInstances通过eurekaClient找到InstanceInfo,加入到List中并返回.