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/**
* Copyright (C) 2017 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.
*/
#pragma once
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
#include "mongo/db/commands.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/pipeline/aggregation_request.h"
#include "mongo/db/query/cursor_response.h"
namespace mongo {
class CurrentOpCommandBase : public BasicCommand {
public:
CurrentOpCommandBase() : BasicCommand("currentOp") {}
virtual ~CurrentOpCommandBase() {}
bool supportsWriteConcern(const BSONObj& cmd) const final {
return false;
}
bool allowsAfterClusterTime(const BSONObj& cmdObj) const final {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const final {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const final {
return true;
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) final;
private:
/**
* Adds or removes stages before the final $group stage is appended to the pipeline.
*/
virtual void modifyPipeline(std::vector<BSONObj>* pipeline) const {};
/**
* Runs the aggregation specified by the supplied AggregationRequest, returning a CursorResponse
* if successful or a Status containing the error otherwise.
*/
virtual StatusWith<CursorResponse> runAggregation(OperationContext* opCtx,
const AggregationRequest& request) const = 0;
/**
* Allows overriders to optionally write additional data to the response object before the final
* 'ok' field is added.
*/
virtual void appendToResponse(BSONObjBuilder* result) const {};
};
} // namespace mongo
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