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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 "mongo/base/counter.h"
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/ops/write_ops.h"
namespace mongo {
/**
* Execution metrics for update type commands - update, findAndModify and their mongoS variants.
* Exposes the metrics to the output of the serverStatus command.
*/
class UpdateMetrics {
public:
/**
* Construct metrics for a command identified by commandName.
*/
UpdateMetrics(StringData commandName);
/**
* Increment counter for how many times this command has executed with an aggregation
* pipeline-style update parameter.
*/
void incrementExecutedWithAggregationPipeline();
/**
* Increment counter for how many times this command has executed with the arrayFilters option.
*/
void incrementExecutedWithArrayFilters();
/**
* Collect update related metrics from the command object for update type commands. Update type
* commands may have update and arrayFilters fields. Accepts an unparsed command object to
* support use cases when the command object is not fully parsed by the command.
*/
void collectMetrics(const BSONObj& cmdObj);
/**
* Increments update metrics corresponding to the supplied parameters.
*/
void collectMetrics(const write_ops::FindAndModifyCommandRequest& cmd);
private:
// A counter for how many times this command has been executed with an aggregation
// pipeline-style update parameter.
Counter64 _commandsWithAggregationPipeline;
// A counter for how many times this command has been executed with the arrayFilters option.
Counter64 _commandsWithArrayFilters;
// A server metric field for the command executions with an aggregation pipeline-style update
// parameter counter.
ServerStatusMetricField<Counter64> _commandsWithAggregationPipelineMetric;
// A server metric field for the command executions with arrayFilters option counter.
ServerStatusMetricField<Counter64> _commandsWithArrayFiltersMetric;
};
} // namespace mongo
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