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/**
* Copyright (C) 2020-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 <utility>
#include "mongo/logv2/log_component.h"
#include "mongo/logv2/log_severity.h"
namespace mongo {
/*
* Return a pair of booleans. The first value is if we should log the operation and the second value
* is if we should sample this operation for profiling.
*/
inline std::pair<bool, bool> shouldLogSlowOpWithSampling(OperationContext* opCtx,
logv2::LogComponent logComponent,
Milliseconds opDuration,
Milliseconds slowMS) {
// Log the operation if log message verbosity for operation component is >= 1.
const bool componentHasTargetLogVerbosity =
shouldLog(logComponent, logv2::LogSeverity::Debug(1));
const auto client = opCtx->getClient();
const bool shouldSample =
client->getPrng().nextCanonicalDouble() < serverGlobalParams.sampleRate;
// Log the transaction if we should sample and its duration is greater than or equal to the
// slowMS command threshold.
const bool shouldLogSlowOp = shouldSample && opDuration >= slowMS;
return std::pair<bool, bool>(componentHasTargetLogVerbosity || shouldLogSlowOp, shouldSample);
}
} // namespace mongo
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