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// Copyright 2014 The Chromium OS 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 BUFFET_STORAGE_IMPLS_H_
#define BUFFET_STORAGE_IMPLS_H_
#include <base/basictypes.h>
#include <base/file_util.h>
#include <base/values.h>
#include "buffet/storage_interface.h"
namespace buffet {
// Persists the given Value to an atomically written file.
class FileStorage : public StorageInterface {
public:
explicit FileStorage(const base::FilePath& file_path);
virtual ~FileStorage() = default;
std::unique_ptr<base::Value> Load() override;
bool Save(const base::Value* config) override;
private:
base::FilePath file_path_;
DISALLOW_COPY_AND_ASSIGN(FileStorage);
};
// StorageInterface for testing. Just stores the values in memory.
class MemStorage : public StorageInterface {
public:
MemStorage() = default;
virtual ~MemStorage() = default;
std::unique_ptr<base::Value> Load() override;
bool Save(const base::Value* config) override;
int save_count() { return save_count_; }
void reset_save_count() { save_count_ = 0; }
private:
int save_count_ = 0;
std::unique_ptr<base::Value> cache_;
DISALLOW_COPY_AND_ASSIGN(MemStorage);
};
} // namespace buffet
#endif // BUFFET_STORAGE_IMPLS_H_