f58d276764
Summary: New public interfaces: `TraceRecord` and `TraceRecord::Handler`, available in "rocksdb/trace_record.h". `Replayer`, available in `rocksdb/utilities/replayer.h`. User can use `DB::NewDefaultReplayer()` to create a Replayer to auto/manual replay a trace file. Unit tests: - `./db_test2 --gtest_filter="DBTest2.TraceAndReplay"`: Updated with the internal API changes. - `./db_test2 --gtest_filter="DBTest2.TraceAndManualReplay"`: New for manual replay. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8611 Reviewed By: ajkr Differential Revision: D30266329 Pulled By: autopear fbshipit-source-id: 1ecb3cbbedae0f6a67c18f0cc82e002b4d81b6f8
50 lines
1.4 KiB
C++
50 lines
1.4 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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#pragma once
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#include "rocksdb/trace_reader_writer.h"
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namespace ROCKSDB_NAMESPACE {
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class RandomAccessFileReader;
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class WritableFileWriter;
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// FileTraceReader allows reading RocksDB traces from a file.
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class FileTraceReader : public TraceReader {
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public:
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explicit FileTraceReader(std::unique_ptr<RandomAccessFileReader>&& reader);
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~FileTraceReader();
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virtual Status Read(std::string* data) override;
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virtual Status Close() override;
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virtual Status Reset() override;
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private:
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std::unique_ptr<RandomAccessFileReader> file_reader_;
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Slice result_;
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size_t offset_;
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char* const buffer_;
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static const unsigned int kBufferSize;
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};
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// FileTraceWriter allows writing RocksDB traces to a file.
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class FileTraceWriter : public TraceWriter {
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public:
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explicit FileTraceWriter(std::unique_ptr<WritableFileWriter>&& file_writer)
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: file_writer_(std::move(file_writer)) {}
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~FileTraceWriter();
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virtual Status Write(const Slice& data) override;
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virtual Status Close() override;
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virtual uint64_t GetFileSize() override;
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private:
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std::unique_ptr<WritableFileWriter> file_writer_;
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};
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} // namespace ROCKSDB_NAMESPACE
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