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Diffstat (limited to 'src/rocksdb/db/blob/blob_fetcher.h')
-rw-r--r-- | src/rocksdb/db/blob/blob_fetcher.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/rocksdb/db/blob/blob_fetcher.h b/src/rocksdb/db/blob/blob_fetcher.h new file mode 100644 index 000000000..8aeaf965d --- /dev/null +++ b/src/rocksdb/db/blob/blob_fetcher.h @@ -0,0 +1,37 @@ +// 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 |