SentinelProperties.SentinelRestTemplate and SentinelProtectInterceptor.SentinelContractHolder.METADATA_MAP to hold
MethodMetadata data.ReadableDataSource Handler Handle the configurations of
'spring.cloud.sentinel.datasource'.Feign.Builder.HealthIndicator for Sentinel, which checks the status of Sentinel Dashboard
and DataSource.InvocationHandler handle invocation that protected by Sentinel.ConfigurationProperties for Sentinel.Copyright © 2021 Pivotal Software, Inc.. All rights reserved.