//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.

//  This source code is licensed under both the GPLv2 (found in the

//  COPYING file in the root directory) and Apache 2.0 License

//  (found in the LICENSE.Apache file in the root directory).

#pragma once

#include <string>

#include "cache/cache_key.h"

#include "monitoring/statistics_impl.h"

#include "rocksdb/persistent_cache.h"

namespace ROCKSDB_NAMESPACE {

// PersistentCacheOptions

//

// This describe the caching behavior for page cache

// This is used to pass the context for caching and the cache handle

struct PersistentCacheOptions {

  PersistentCacheOptions() {}

  explicit PersistentCacheOptions(

      const std::shared_ptr<PersistentCache>& _persistent_cache,

      const OffsetableCacheKey& _base_cache_key, Statistics* const _statistics)

      : persistent_cache(_persistent_cache),

        base_cache_key(_base_cache_key),

        statistics(_statistics) {}

  std::shared_ptr<PersistentCache> persistent_cache;

  OffsetableCacheKey base_cache_key;

  Statistics* statistics = nullptr;

  static const PersistentCacheOptions kEmpty;

};

}  // namespace ROCKSDB_NAMESPACE