// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_LEVELDB_PROTO_LEVELDB_DATABASE_H_
#define COMPONENTS_LEVELDB_PROTO_LEVELDB_DATABASE_H_

#include <string>
#include <vector>

#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/threading/thread_collision_warner.h"

namespace leveldb {
class DB;
}  // namespace leveldb

namespace leveldb_proto {

// Interacts with the LevelDB third party module.
// Once constructed, function calls and destruction should all occur on the
// same thread (not necessarily the same as the constructor).
class LevelDB {
 public:
  LevelDB();
  virtual ~LevelDB();

  virtual bool Init(const base::FilePath& database_dir);
  virtual bool Save(
      const std::vector<std::pair<std::string, std::string> >& pairs_to_save,
      const std::vector<std::string>& keys_to_remove);
  virtual bool Load(std::vector<std::string>* entries);

 private:
  DFAKE_MUTEX(thread_checker_);
  scoped_ptr<leveldb::DB> db_;
};

}  // namespace leveldb_proto

#endif  // COMPONENTS_LEVELDB_PROTO_LEVELDB_DATABASE_H_