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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/dbdirectclient.h"
#include "mongo/db/pipeline/pipeline.h"
#include "mongo/db/pipeline/process_interface_standalone.h"
namespace mongo {
/**
* Specialized version of the MongoDInterface when this node is a shard server.
*/
class MongoInterfaceShardServer final : public MongoInterfaceStandalone {
public:
using MongoInterfaceStandalone::MongoInterfaceStandalone;
void checkRoutingInfoEpochOrThrow(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& nss,
ChunkVersion targetCollectionVersion) const final;
std::pair<std::vector<FieldPath>, bool> collectDocumentKeyFieldsForHostedCollection(
OperationContext* opCtx, const NamespaceString&, UUID) const final;
std::vector<FieldPath> collectDocumentKeyFieldsActingAsRouter(
OperationContext*, const NamespaceString&) const final {
// We don't expect anyone to use this method on the shard itself (yet). This is currently
// only used for $out. For $out in a sharded cluster, the mongos is responsible for
// collecting the document key fields before serializing them and sending them to the
// shards. This is logically a MONGO_UNREACHABLE, but a malicious user could construct a
// request to send directly to the shards which does not include the uniqueKey, so we must
// be prepared to gracefully error.
uasserted(50997, "Unexpected attempt to consult catalog cache on a shard server");
}
/**
* Inserts the documents 'objs' into the namespace 'ns' using the ClusterWriter for locking,
* routing, stale config handling, etc.
*/
void insert(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::vector<BSONObj>&& objs,
const WriteConcernOptions& wc,
boost::optional<OID> targetEpoch) final;
/**
* Replaces the documents matching 'queries' with 'updates' using the ClusterWriter for locking,
* routing, stale config handling, etc.
*/
void update(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::vector<BSONObj>&& queries,
std::vector<BSONObj>&& updates,
const WriteConcernOptions& wc,
bool upsert,
bool multi,
boost::optional<OID> targetEpoch) final;
std::unique_ptr<Pipeline, PipelineDeleter> attachCursorSourceToPipeline(
const boost::intrusive_ptr<ExpressionContext>& expCtx, Pipeline* pipeline) final;
};
} // namespace mongo
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