database.h

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/*
 *   Copyright (C) 2020 Nippon Telegraph and Telephone Corporation.
 
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 
 *   http://www.apache.org/licenses/LICENSE-2.0
 
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
 
#ifndef LINEAIRDB_DATABASE_H
#define LINEAIRDB_DATABASE_H
 
#include <lineairdb/transaction.h>
 
#include <functional>
#include <memory>
#include <optional>
 
#include "config.h"
#include "tx_status.h"
 
namespace LineairDB {
 
class Database {
 public:
  Database() noexcept;
 
  Database(const Config& config) noexcept;
 
  ~Database() noexcept;
  Database(const Database&) = delete;
  Database& operator=(const Database&) = delete;
  Database(Database&&)                 = delete;
  Database& operator=(Database&&) = delete;
 
  const Config GetConfig() const noexcept;
 
  using ProcedureType = std::function<void(Transaction&)>;
  using CallbackType  = std::function<void(const TxStatus)>;
  void ExecuteTransaction(
      ProcedureType proc, CallbackType commit_clbk,
      std::optional<CallbackType> precommit_clbk = std::nullopt);
 
  Transaction& BeginTransaction();
 
  bool EndTransaction(Transaction& tx, CallbackType clbk);
 
  void Fence() const noexcept;
 
  void WaitForCheckpoint() const noexcept;
 
  void RequestCallbacks();
 
 private:
  class Impl;
  const std::unique_ptr<Impl> db_pimpl_;
  friend class Transaction;
};
 
};  // namespace LineairDB
 
#endif