apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/grayReleaseRule/GrayReleaseRulesHolder.java/GrayReleaseRulesHolder/hasGrayReleaseRule
class GrayReleaseRulesHolder:  public boolean hasGrayReleaseRule(String clientAppId, String clientIp, String namespaceName) {
    return reversedGrayReleaseRuleCache.containsKey(assembleReversedGrayReleaseRuleKey(clientAppId,
        namespaceName, clientIp)) || reversedGrayReleaseRuleCache.containsKey
        (assembleReversedGrayReleaseRuleKey(clientAppId, namespaceName, GrayReleaseRuleItemDTO
            .ALL_IP));
  }