Function DfsGetCurrent

src/admincli.cc:836–862

}

int DfsGetCurrent(const std::string& current_path, std::string* content) {
  if (current_path == "") {
    LOG(INFO) << "fail, Invalid arguments";
    return -1;
  }

  leveldb::DfsFile* file = g_dfs->OpenFile(current_path, leveldb::RDONLY);
  if (NULL == file) {
    LOG(INFO) << "fail, open current path(" << current_path.c_str() << ") fail";
    return errno;
  }

  // MANIFEST-000000, just 15 char
  char buf[MANIFEST_LEN] = {0};
  ssize_t ret_size = 0;
  ret_size = file->Read(buf, sizeof(buf));
  if (ret_size > 0) {
    buf[MANIFEST_LEN - 1] = '\0';
    *content = buf;
  } else {
    *content = "";
    LOG(INFO) << "fail, read current fail";
  }

  file->CloseFile();
  return 0;
}

int MapOutPutDiff(std::map<std::string, std::vector<std::string>>* map_diff) {
  // output mutex