code: @GetMapping("/log/transaction-info")
      public JSONObject transactionInfo(
              @RequestParam("groupId") String groupId,
              @RequestParam("unitId") String unitId) throws TxManagerException {
          try {
              return txExceptionService.getTransactionInfo(groupId, unitId);
          } catch (TransactionStateException e) {
              throw new TxManagerException(e);
          }
      }
docs: 获取某个事务组某个节点具体补偿信息
  
  @param groupId groupId
  @param unitId  unitId
  @return transaction info
  @throws TxManagerException TxManagerException