Method LoadMetaTableFromFile

src/master/master_impl.cc:654–689

}

bool MasterImpl::LoadMetaTableFromFile(const std::string &filename, StatusCode *ret_status) {
  tablet_manager_->ClearTableList();
  std::ifstream ifs(filename.c_str(), std::ofstream::binary);
  if (!ifs.is_open()) {
    LOG(ERROR) << "fail to open file " << filename << " for read";
    SetStatusCode(kIOError, ret_status);
    return false;
  }

  uint64_t count = 0;
  std::string key, value;
  while (ReadFromStream(ifs, &key, &value)) {
    if (key.empty()) {
      return true;
    }

    char first_key_char = key[0];
    if (first_key_char == '~') {
      user_manager_->LoadUserMeta(key, value);
    } else if (first_key_char == '|') {
      // user&passwd&role&permission
    } else if (first_key_char == '@') {
      tablet_manager_->LoadTableMeta(key, value);
    } else if (first_key_char > '@') {
      tablet_manager_->LoadTabletMeta(key, value);
    } else {
      continue;
    }

    count++;
  }
  tablet_manager_->ClearTableList();
  SetStatusCode(kIOError, ret_status);
  LOG(ERROR) << "fail to load meta table: " << StatusCodeToString(kIOError);
  return false;
}

bool MasterImpl::ReadFromStream(std::ifstream &ifs, std::string *key, std::string *value) {
  uint32_t key_size = 0, value_size = 0;