Spring Cloud Eureka 源码跟踪(2.服务获取)

说明：通过定时线程类（ScheduledExecutorService scheduler）间隔renewalIntervalInSecs（默认30s）执行 DiscoveryClient.CacheRefreshThread方法获取服务。

scheduler.schedule调用完整代码
this.scheduler.schedule(newTimedSupervisorTask(“cacheRefresh”,this.scheduler,this.cacheRefreshExecutor,renewalIntervalInSecs,TimeUnit.SECONDS,expBackOffBound,newDiscoveryClient.CacheRefreshThread()),(long)renewalIntervalInSecs,TimeUnit.SECONDS);
说明：cacheRefreshExecutor 具体执行线程池

TimedSupervisorTask线程类 run方法