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b6640c3117
Summary: The primary purpose of the FactoryFunc was to support LITE mode where the ObjectRegistry was not available. With the removal of LITE mode, the function was no longer required. Note that the MergeOperator had some private classes defined in header files. To gain access to their constructors (and name methods), the class definitions were moved into header files. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11203 Reviewed By: cbi42 Differential Revision: D43160255 Pulled By: pdillinger fbshipit-source-id: f3a465fd5d1a7049b73ecf31e4b8c3762f6dae6c
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "utilities/merge_operators/uint64add.h"
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#include <memory>
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#include "logging/logging.h"
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#include "rocksdb/env.h"
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#include "rocksdb/merge_operator.h"
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#include "rocksdb/slice.h"
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#include "util/coding.h"
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#include "utilities/merge_operators.h"
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namespace ROCKSDB_NAMESPACE { // anonymous namespace
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bool UInt64AddOperator::Merge(const Slice& /*key*/, const Slice* existing_value,
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const Slice& value, std::string* new_value,
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Logger* logger) const {
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uint64_t orig_value = 0;
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if (existing_value) {
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orig_value = DecodeInteger(*existing_value, logger);
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}
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uint64_t operand = DecodeInteger(value, logger);
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assert(new_value);
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new_value->clear();
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PutFixed64(new_value, orig_value + operand);
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return true; // Return true always since corruption will be treated as 0
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}
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uint64_t UInt64AddOperator::DecodeInteger(const Slice& value,
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Logger* logger) const {
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uint64_t result = 0;
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if (value.size() == sizeof(uint64_t)) {
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result = DecodeFixed64(value.data());
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} else if (logger != nullptr) {
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// If value is corrupted, treat it as 0
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ROCKS_LOG_ERROR(logger,
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"uint64 value corruption, size: %" ROCKSDB_PRIszt
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" > %" ROCKSDB_PRIszt,
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value.size(), sizeof(uint64_t));
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}
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return result;
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}
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std::shared_ptr<MergeOperator> MergeOperators::CreateUInt64AddOperator() {
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return std::make_shared<UInt64AddOperator>();
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}
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} // namespace ROCKSDB_NAMESPACE
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