rocksdb/db/blob/blob_fetcher.cc
Akanksha Mahajan 3897ce3125 Support for Merge in Integrated BlobDB with base values (#8292)
Summary:
This PR add support for Merge operation in Integrated BlobDB with base values(i.e DB::Put). Merged values can be retrieved through  DB::Get, DB::MultiGet, DB::GetMergeOperands and Iterator operation.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8292

Test Plan: Add new unit tests

Reviewed By: ltamasi

Differential Revision: D28415896

Pulled By: akankshamahajan15

fbshipit-source-id: e9b3478bef51d2f214fb88c31ed3c8d2f4a531ff
2021-06-10 12:58:37 -07:00

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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).
#include "db/blob/blob_fetcher.h"
#include "db/version_set.h"
namespace ROCKSDB_NAMESPACE {
Status BlobFetcher::FetchBlob(const Slice& user_key, const Slice& blob_index,
PinnableSlice* blob_value) {
Status s;
assert(version_);
constexpr uint64_t* bytes_read = nullptr;
s = version_->GetBlob(read_options_, user_key, blob_index, blob_value,
bytes_read);
return s;
}
} // namespace ROCKSDB_NAMESPACE