rocksdb/trace_replay/trace_record_handler.h
Merlin Mao d10801e983 Allow Replayer to report the results of TraceRecords. (#8657)
Summary:
`Replayer::Execute()` can directly returns the result (e.g, request latency, DB::Get() return code, returned value, etc.)
`Replayer::Replay()` reports the results via a callback function.

New interface:
`TraceRecordResult` in "rocksdb/trace_record_result.h".

`DBTest2.TraceAndReplay` and `DBTest2.TraceAndManualReplay` are updated accordingly.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8657

Reviewed By: ajkr

Differential Revision: D30290216

Pulled By: autopear

fbshipit-source-id: 3c8d4e6b180ec743de1a9d9dcaee86064c74f0d6
2021-08-18 17:06:14 -07:00

47 lines
1.6 KiB
C++

// 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 <memory>
#include <unordered_map>
#include <vector>
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "rocksdb/status.h"
#include "rocksdb/system_clock.h"
#include "rocksdb/trace_record.h"
namespace ROCKSDB_NAMESPACE {
// Handler to execute TraceRecord.
class TraceExecutionHandler : public TraceRecord::Handler {
public:
TraceExecutionHandler(DB* db,
const std::vector<ColumnFamilyHandle*>& handles);
virtual ~TraceExecutionHandler() override;
virtual Status Handle(const WriteQueryTraceRecord& record,
std::unique_ptr<TraceRecordResult>* result) override;
virtual Status Handle(const GetQueryTraceRecord& record,
std::unique_ptr<TraceRecordResult>* result) override;
virtual Status Handle(const IteratorSeekQueryTraceRecord& record,
std::unique_ptr<TraceRecordResult>* result) override;
virtual Status Handle(const MultiGetQueryTraceRecord& record,
std::unique_ptr<TraceRecordResult>* result) override;
private:
DB* db_;
std::unordered_map<uint32_t, ColumnFamilyHandle*> cf_map_;
WriteOptions write_opts_;
ReadOptions read_opts_;
std::shared_ptr<SystemClock> clock_;
};
// To do: Handler for trace_analyzer.
} // namespace ROCKSDB_NAMESPACE