/**
 *    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.
 */

#include "mongo/executor/hedging_metrics.h"

namespace mongo {

namespace {
const auto HedgingMetricsDecoration = ServiceContext::declareDecoration<HedgingMetrics>();
}  // namespace

HedgingMetrics* HedgingMetrics::get(ServiceContext* service) {
    return &HedgingMetricsDecoration(service);
}

HedgingMetrics* HedgingMetrics::get(OperationContext* opCtx) {
    return get(opCtx->getServiceContext());
}

long long HedgingMetrics::getNumTotalOperations() const {
    return _numTotalOperations.load();
}

void HedgingMetrics::incrementNumTotalOperations() {
    _numTotalOperations.fetchAndAdd(1);
}

long long HedgingMetrics::getNumTotalHedgedOperations() const {
    return _numTotalHedgedOperations.load();
}

void HedgingMetrics::incrementNumTotalHedgedOperations() {
    _numTotalHedgedOperations.fetchAndAdd(1);
}

long long HedgingMetrics::getNumAdvantageouslyHedgedOperations() const {
    return _numAdvantageouslyHedgedOperations.load();
}

void HedgingMetrics::incrementNumAdvantageouslyHedgedOperations() {
    _numAdvantageouslyHedgedOperations.fetchAndAdd(1);
}

BSONObj HedgingMetrics::toBSON() const {
    BSONObjBuilder builder;

    builder.append("numTotalOperations", _numTotalOperations.load());
    builder.append("numTotalHedgedOperations", _numTotalHedgedOperations.load());
    builder.append("numAdvantageouslyHedgedOperations", _numAdvantageouslyHedgedOperations.load());

    return builder.obj();
}

}  // namespace mongo
