rocksdb/db/blob/blob_file_addition.h

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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 <cassert>
#include <cstdint>
#include <iosfwd>
#include <string>
#include "db/blob/blob_constants.h"
#include "rocksdb/rocksdb_namespace.h"
namespace ROCKSDB_NAMESPACE {
class JSONWriter;
class Slice;
class Status;
class BlobFileAddition {
public:
BlobFileAddition() = default;
BlobFileAddition(uint64_t blob_file_number, uint64_t total_blob_count,
uint64_t total_blob_bytes, std::string checksum_method,
std::string checksum_value)
: blob_file_number_(blob_file_number),
total_blob_count_(total_blob_count),
total_blob_bytes_(total_blob_bytes),
checksum_method_(std::move(checksum_method)),
checksum_value_(std::move(checksum_value)) {
assert(checksum_method_.empty() == checksum_value_.empty());
}
uint64_t GetBlobFileNumber() const { return blob_file_number_; }
uint64_t GetTotalBlobCount() const { return total_blob_count_; }
uint64_t GetTotalBlobBytes() const { return total_blob_bytes_; }
const std::string& GetChecksumMethod() const { return checksum_method_; }
const std::string& GetChecksumValue() const { return checksum_value_; }
void EncodeTo(std::string* output) const;
Status DecodeFrom(Slice* input);
std::string DebugString() const;
std::string DebugJSON() const;
private:
enum CustomFieldTags : uint32_t;
uint64_t blob_file_number_ = kInvalidBlobFileNumber;
uint64_t total_blob_count_ = 0;
uint64_t total_blob_bytes_ = 0;
std::string checksum_method_;
std::string checksum_value_;
};
bool operator==(const BlobFileAddition& lhs, const BlobFileAddition& rhs);
bool operator!=(const BlobFileAddition& lhs, const BlobFileAddition& rhs);
std::ostream& operator<<(std::ostream& os,
const BlobFileAddition& blob_file_addition);
JSONWriter& operator<<(JSONWriter& jw,
const BlobFileAddition& blob_file_addition);
} // namespace ROCKSDB_NAMESPACE