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/**
* Copyright (C) 2018 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/single_transaction_stats.h"
namespace mongo {
void SingleTransactionStats::setStartTime(TickSource::Tick curTick, Date_t curWallClockTime) {
invariant(_startTime == 0);
_startTime = curTick;
_startWallClockTime = curWallClockTime;
}
Microseconds SingleTransactionStats::getDuration(TickSource* tickSource,
TickSource::Tick curTick) const {
invariant(_startTime > 0);
// The transaction hasn't ended yet, so we return how long it has currently been running for.
if (_endTime == 0) {
return tickSource->ticksTo<Microseconds>(curTick - _startTime);
}
return tickSource->ticksTo<Microseconds>(_endTime - _startTime);
}
void SingleTransactionStats::setEndTime(TickSource::Tick time) {
invariant(_startTime > 0);
_endTime = time;
}
Microseconds SingleTransactionStats::getTimeActiveMicros(TickSource* tickSource,
TickSource::Tick curTick) const {
invariant(_startTime > 0);
// The transaction is currently active, so we return the recorded active time so far plus the
// time since _timeActiveStart.
if (isActive()) {
return _timeActiveMicros +
tickSource->ticksTo<Microseconds>(curTick - _lastTimeActiveStart);
}
return _timeActiveMicros;
}
Microseconds SingleTransactionStats::getTimeInactiveMicros(TickSource* tickSource,
TickSource::Tick curTick) const {
invariant(_startTime > 0);
return getDuration(tickSource, curTick) - getTimeActiveMicros(tickSource, curTick);
}
void SingleTransactionStats::setActive(TickSource::Tick curTick) {
invariant(!isActive());
_lastTimeActiveStart = curTick;
}
void SingleTransactionStats::setInactive(TickSource* tickSource, TickSource::Tick curTick) {
invariant(isActive());
_timeActiveMicros += tickSource->ticksTo<Microseconds>(curTick - _lastTimeActiveStart);
_lastTimeActiveStart = 0;
}
void SingleTransactionStats::report(BSONObjBuilder* builder,
const repl::ReadConcernArgs& readConcernArgs,
TickSource* tickSource,
TickSource::Tick curTick) const {
BSONObjBuilder parametersBuilder(builder->subobjStart("parameters"));
parametersBuilder.append("txnNumber", _txnNumber);
if (!isForMultiDocumentTransaction()) {
// For retryable writes, we only include the txnNumber.
parametersBuilder.done();
return;
}
parametersBuilder.append("autocommit", *_autoCommit);
readConcernArgs.appendInfo(¶metersBuilder);
parametersBuilder.done();
builder->append("readTimestamp", _readTimestamp);
builder->append("startWallClockTime", dateToISOStringLocal(_startWallClockTime));
// The same "now" time must be used so that the following time metrics are consistent with each
// other.
builder->append("timeOpenMicros",
durationCount<Microseconds>(getDuration(tickSource, curTick)));
auto timeActive = durationCount<Microseconds>(getTimeActiveMicros(tickSource, curTick));
auto timeInactive = durationCount<Microseconds>(getTimeInactiveMicros(tickSource, curTick));
builder->append("timeActiveMicros", timeActive);
builder->append("timeInactiveMicros", timeInactive);
if (_expireDate != Date_t::max()) {
builder->append("expiryTime", dateToISOStringLocal(_expireDate));
}
}
} // namespace mongo
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