56 lines
1.8 KiB
C
56 lines
1.8 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).
|
||
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "rocksdb/stats_history.h"
|
||
|
|
|
||
|
|
namespace rocksdb {
|
||
|
|
|
||
|
|
class InMemoryStatsHistoryIterator final : public StatsHistoryIterator {
|
||
|
|
public:
|
||
|
|
InMemoryStatsHistoryIterator(uint64_t start_time, uint64_t end_time,
|
||
|
|
DBImpl* db_impl)
|
||
|
|
: start_time_(start_time),
|
||
|
|
end_time_(end_time),
|
||
|
|
valid_(true),
|
||
|
|
db_impl_(db_impl) {
|
||
|
|
AdvanceIteratorByTime(start_time_, end_time_);
|
||
|
|
}
|
||
|
|
~InMemoryStatsHistoryIterator() override;
|
||
|
|
bool Valid() const override;
|
||
|
|
Status status() const override;
|
||
|
|
|
||
|
|
void Next() override;
|
||
|
|
uint64_t GetStatsTime() const override;
|
||
|
|
|
||
|
|
const std::map<std::string, uint64_t>& GetStatsMap() const override;
|
||
|
|
|
||
|
|
private:
|
||
|
|
// advance the iterator to the next stats history record with timestamp
|
||
|
|
// between [start_time, end_time)
|
||
|
|
void AdvanceIteratorByTime(uint64_t start_time, uint64_t end_time);
|
||
|
|
|
||
|
|
// No copying allowed
|
||
|
|
InMemoryStatsHistoryIterator(const InMemoryStatsHistoryIterator&) = delete;
|
||
|
|
void operator=(const InMemoryStatsHistoryIterator&) = delete;
|
||
|
|
InMemoryStatsHistoryIterator(InMemoryStatsHistoryIterator&&) = delete;
|
||
|
|
InMemoryStatsHistoryIterator& operator=(InMemoryStatsHistoryIterator&&) =
|
||
|
|
delete;
|
||
|
|
|
||
|
|
uint64_t time_;
|
||
|
|
uint64_t start_time_;
|
||
|
|
uint64_t end_time_;
|
||
|
|
std::map<std::string, uint64_t> stats_map_;
|
||
|
|
Status status_;
|
||
|
|
bool valid_;
|
||
|
|
DBImpl* db_impl_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace rocksdb
|