Eureka Server 代码分析01

Posted 2022-02-05 zhujunhuawoaini

Eureka Server 配置

InstanceStatus： 实例状态

    public enum InstanceStatus 
        UP, // Ready to receive traffic 准备接收通信(流量)
        DOWN, // Do not send traffic- healthcheck callback failed 不发送流量，服务健康检查调用失败
        STARTING, // Just about starting- initializations to be done - do not
        // send traffic
        OUT_OF_SERVICE, // Intentionally shutdown for traffic 故意关闭流量
        UNKNOWN;

        public static InstanceStatus toEnum(String s) 
            if (s != null) 
                try 
                    return InstanceStatus.valueOf(s.toUpperCase());
                 catch (IllegalArgumentException e) 
                    // ignore and fall through to unknown
                    logger.debug("illegal argument supplied to InstanceStatus.valueOf: , defaulting to ", s, UNKNOWN);
                
            
            return UNKNOWN;