Redis Sentinel源码分析（二）(三)
rWaitStart(ri);
break;
//从slave中选择一个master，置状态为SENTINEL_FAILOVER_STATE_SEND_SLAVEOF_NOONE
case SENTINEL_FAILOVER_STATE_SELECT_SLAVE: sentinelFailoverSelectSlave(ri); break;
//升级被选中的从服务器为新主服务器，置状态为SENTINEL_FAILOVER_STATE_WAIT_PROMOTION
case SENTINEL_FAILOVER_STATE_SEND_SLAVEOF_NOONE: sentinelFailoverSendSlaveOfNoOne(ri); break;
//等待fail over生效，info语句的回调函数sentinelRefreshInstanceInfo会更新当前状态SENTINEL_FAILOVER_STATE_RECONF_SLAVES
case SENTINEL_FAILOVER_STATE_WAIT_PROMOTION: sentinelFailoverWaitPromotion(ri); break;
//令其它从服务器同步新主服务器
case SENTINEL_FAILOVER_STATE_RECONF_SLAVES: sentinelFailoverReconfNextSlave(ri); break;
}
}