import org.apache.hadoop.ha.proto.HAServiceProtocolProtos.HAServiceStateProto; //导入依赖的package包/类
@Override
public GetServiceStatusResponseProto getServiceStatus(RpcController controller,
    GetServiceStatusRequestProto request) throws ServiceException {
  HAServiceStatus s;
  try {
    s = server.getServiceStatus();
  } catch(IOException e) {
    throw new ServiceException(e);
  }
  
  HAServiceStateProto retState;
  switch (s.getState()) {
  case ACTIVE:
    retState = HAServiceStateProto.ACTIVE;
    break;
  case STANDBY:
    retState = HAServiceStateProto.STANDBY;
    break;
  case INITIALIZING:
  default:
    retState = HAServiceStateProto.INITIALIZING;
    break;
  }
  
  GetServiceStatusResponseProto.Builder ret =
    GetServiceStatusResponseProto.newBuilder()
      .setState(retState)
      .setReadyToBecomeActive(s.isReadyToBecomeActive());
  if (!s.isReadyToBecomeActive()) {
    ret.setNotReadyReason(s.getNotReadyReason());
  }
  return ret.build();
}
 

import org.apache.hadoop.ha.proto.HAServiceProtocolProtos.HAServiceStateProto; //导入依赖的package包/类
private HAServiceState convert(HAServiceStateProto state) {
  switch(state) {
  case ACTIVE:
    return HAServiceState.ACTIVE;
  case STANDBY:
    return HAServiceState.STANDBY;
  case INITIALIZING:
  default:
    return HAServiceState.INITIALIZING;
  }
}