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/**
* Copyright (C) 2022-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include "mongo/crypto/fle_stats_gen.h"
#include "mongo/db/commands/server_status.h"
#include "mongo/util/tick_source.h"
namespace mongo {
/**
* Tracks and reports statistics about the server-side Queryable Encryption integration.
*/
class FLEStatusSection : public ServerStatusSection {
public:
// Creates a section which tracks operation time with system default clock source.
FLEStatusSection();
// Creates a section manager which tracks operation time with provided clock source.
FLEStatusSection(TickSource* tickSource);
// Return the global status section Singleton
static FLEStatusSection& get();
// Report FLE metrics if any stat has been set.
bool includeByDefault() const final {
return _hasStats.loadRelaxed();
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const final;
/**
* An object by which a caller may report their interactions with Emulated Binary Search.
*
* Every time a caller performs emuBinary, this object will report the attempt. After the
* caller is done, this object will report the total elapsed wallclock time.
*/
class EmuBinaryTracker {
friend FLEStatusSection;
public:
~EmuBinaryTracker() {
if (_active) {
_section->emuBinaryTotalMillis.fetchAndAddRelaxed(_timer.millis());
}
}
void recordSuboperation() {
if (_active) {
_section->emuBinarySuboperation.fetchAndAddRelaxed(1);
}
}
private:
explicit EmuBinaryTracker(FLEStatusSection* section, bool active)
: _section(section), _active(active), _timer(_section->_tickSource) {
if (_active) {
_section->_hasStats.store(true);
_section->emuBinaryCalls.fetchAndAddRelaxed(1);
}
}
FLEStatusSection* _section;
bool _active;
Timer _timer;
};
EmuBinaryTracker makeEmuBinaryTracker();
void updateCompactionStats(const CompactStats& stats) {
stdx::lock_guard<Mutex> lock(_mutex);
_hasStats.store(true);
accumulateStats(_compactStats.getEsc(), stats.getEsc());
accumulateStats(_compactStats.getEcoc(), stats.getEcoc());
if (stats.getEcc().has_value()) {
if (!_compactStats.getEcc().has_value()) {
_compactStats.setEcc(ECStats{});
}
accumulateStats(_compactStats.getEcc().value(), stats.getEcc().value());
}
}
private:
static void accumulateStats(ECStats& left, const ECStats& right) {
left.setRead(left.getRead() + right.getRead());
left.setInserted(left.getInserted() + right.getInserted());
left.setUpdated(left.getUpdated() + right.getUpdated());
left.setDeleted(left.getDeleted() + right.getDeleted());
}
static void accumulateStats(ECOCStats& left, const ECOCStats& right) {
left.setRead(left.getRead() + right.getRead());
left.setDeleted(left.getDeleted() + right.getDeleted());
}
TickSource* _tickSource;
AtomicWord<bool> _hasStats{false};
AtomicWord<long long> emuBinaryCalls;
AtomicWord<long long> emuBinarySuboperation;
AtomicWord<long long> emuBinaryTotalMillis;
mutable Mutex _mutex = MONGO_MAKE_LATCH("FLECompactStats::_mutex");
CompactStats _compactStats;
};
} // namespace mongo
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