@Override
  public TPermissionInfoResp checkRoleOfUser(TAuthorizerReq req) {
    return configManager.checkRoleOfUser(req.getUserName(), req.getRoleName());
  }
ConfigNodeRPCServer exposes the interface that interacts with the DataNode
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/service/thrift/ConfigNodeRPCServiceProcessor.java