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/**
* Copyright (C) 2018-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/db/ops/write_ops_gen.h"
#include "mongo/db/pipeline/pipeline.h"
#include "mongo/db/pipeline/process_interface/non_shardsvr_process_interface.h"
namespace mongo {
/**
* An implementation of the MongoProcessInterface used on replica set nodes when sharding is not
* enabled.
*/
class ReplicaSetNodeProcessInterface final : public NonShardServerProcessInterface {
public:
using NonShardServerProcessInterface::NonShardServerProcessInterface;
std::unique_ptr<WriteSizeEstimator> getWriteSizeEstimator(
OperationContext* opCtx, const NamespaceString& ns) const override {
if (_canWriteLocally(opCtx, ns)) {
return std::make_unique<LocalWriteSizeEstimator>();
} else {
return std::make_unique<TargetPrimaryWriteSizeEstimator>();
}
}
static std::shared_ptr<executor::TaskExecutor> getReplicaSetNodeExecutor(
ServiceContext* service);
static std::shared_ptr<executor::TaskExecutor> getReplicaSetNodeExecutor(
OperationContext* opCtx);
static void setReplicaSetNodeExecutor(ServiceContext* service,
std::shared_ptr<executor::TaskExecutor> executor);
ReplicaSetNodeProcessInterface(std::shared_ptr<executor::TaskExecutor> executor)
: NonShardServerProcessInterface(std::move(executor)) {}
virtual ~ReplicaSetNodeProcessInterface() = default;
Status insert(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::unique_ptr<write_ops::InsertCommandRequest> insertCommand,
const WriteConcernOptions& wc,
boost::optional<OID> targetEpoch) final;
StatusWith<UpdateResult> update(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::unique_ptr<write_ops::UpdateCommandRequest> updateCommand,
const WriteConcernOptions& wc,
UpsertType upsert,
bool multi,
boost::optional<OID> targetEpoch) override;
void renameIfOptionsAndIndexesHaveNotChanged(OperationContext* opCtx,
const NamespaceString& sourceNs,
const NamespaceString& targetNs,
bool dropTarget,
bool stayTemp,
const BSONObj& originalCollectionOptions,
const std::list<BSONObj>& originalIndexes);
void createCollection(OperationContext* opCtx,
const DatabaseName& dbName,
const BSONObj& cmdObj);
void dropCollection(OperationContext* opCtx, const NamespaceString& collection);
void createIndexesOnEmptyCollection(OperationContext* opCtx,
const NamespaceString& ns,
const std::vector<BSONObj>& indexSpecs);
void createTimeseriesView(OperationContext* opCtx,
const NamespaceString& ns,
const BSONObj& cmdObj,
const TimeseriesOptions& userOpts);
Status insertTimeseries(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::unique_ptr<write_ops::InsertCommandRequest> insertCommand,
const WriteConcernOptions& wc,
boost::optional<OID> targetEpoch);
private:
/**
* Attemps to execute the specified command on the primary. Returns the command response upon
* success or a non-OK status upon a failed command response, a writeConcernError, or any
* writeErrors.
*/
StatusWith<BSONObj> _executeCommandOnPrimary(OperationContext* opCtx,
const NamespaceString& ns,
const BSONObj& cmdObj) const;
/**
* Attaches command arguments such as writeConcern to 'cmd'.
*/
void _attachGenericCommandArgs(OperationContext* opCtx, BSONObjBuilder* cmd) const;
/**
* Returns whether we are the primary and can therefore perform writes locally. Result may be
* immediately stale upon return.
*/
bool _canWriteLocally(OperationContext* opCtx, const NamespaceString& ns) const;
};
} // namespace mongo
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