code: @GetMapping("/count/{type}/{key}/{task}")
      public Map<String, Object> count(@PathVariable String type, @PathVariable String key, @PathVariable String task) {
          OuterAdapter adapter = loader.getExtension(type, key);
          return adapter.count(task);
      }
docs: 统计总数 curl http://127.0.0.1:8081/count/rdb/oracle1/mytest_user.yml
  
  @param type 类型 hbase, es
  @param key adapter key
  @param task 任务名对应配置文件名 mytest_person2.yml
  @return