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// 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 "rocksdb/options.h"
#include "rocksdb/status.h"
namespace ROCKSDB_NAMESPACE {
class Version;
class Slice;
class FilePrefetchBuffer;
class PinnableSlice;
class BlobIndex;
// A thin wrapper around the blob retrieval functionality of Version.
class BlobFetcher {
public:
BlobFetcher(const Version* version, const ReadOptions& read_options)
: version_(version), read_options_(read_options) {}
Status FetchBlob(const Slice& user_key, const Slice& blob_index_slice,
FilePrefetchBuffer* prefetch_buffer,
PinnableSlice* blob_value, uint64_t* bytes_read) const;
Status FetchBlob(const Slice& user_key, const BlobIndex& blob_index,
FilePrefetchBuffer* prefetch_buffer,
PinnableSlice* blob_value, uint64_t* bytes_read) const;
private:
const Version* version_;
ReadOptions read_options_;
};
} // namespace ROCKSDB_NAMESPACE
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