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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 <boost/intrusive_ptr.hpp>
#include <deque>
#include <vector>
#include "mongo/db/exec/document_value/document.h"
#include "mongo/db/exec/shard_filterer.h"
#include "mongo/db/pipeline/document_source.h"
#include "mongo/db/pipeline/pipeline.h"
#include "mongo/db/pipeline/process_interface/stub_mongo_process_interface.h"
namespace mongo {
class StubShardFilterer : public ShardFilterer {
public:
DocumentBelongsResult documentBelongsToMe(const WorkingSetMember& wsm) const override {
MONGO_UNREACHABLE;
}
DocumentBelongsResult documentBelongsToMe(const Document& doc) const override {
MONGO_UNREACHABLE;
}
bool isCollectionSharded() const override {
MONGO_UNREACHABLE;
}
const KeyPattern& getKeyPattern() const override {
MONGO_UNREACHABLE;
}
};
/**
* A mock MongoProcessInterface which allows mocking a foreign pipeline.
*/
class StubLookupSingleDocumentProcessInterface final : public StubMongoProcessInterface {
public:
StubLookupSingleDocumentProcessInterface(std::deque<DocumentSource::GetNextResult> mockResults)
: _mockResults(std::move(mockResults)) {}
std::unique_ptr<Pipeline, PipelineDeleter> makePipeline(
const std::vector<BSONObj>& rawPipeline,
const boost::intrusive_ptr<ExpressionContext>& expCtx,
const MakePipelineOptions opts = MakePipelineOptions{}) final;
std::unique_ptr<Pipeline, PipelineDeleter> attachCursorSourceToPipeline(
const boost::intrusive_ptr<ExpressionContext>& expCtx,
Pipeline* ownedPipeline,
bool allowTargetingShards = true) final;
std::unique_ptr<Pipeline, PipelineDeleter> attachCursorSourceToPipelineForLocalRead(
const boost::intrusive_ptr<ExpressionContext>& expCtx, Pipeline* ownedPipeline) final;
boost::optional<Document> lookupSingleDocument(
const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& nss,
UUID collectionUUID,
const Document& documentKey,
boost::optional<BSONObj> readConcern,
bool allowSpeculativeMajorityRead);
std::unique_ptr<ShardFilterer> getShardFilterer(
const boost::intrusive_ptr<ExpressionContext>& expCtx) const override {
// Try to emulate the behavior mongos and mongod would each follow.
if (expCtx->inMongos) {
return nullptr;
} else {
return std::make_unique<StubShardFilterer>();
}
}
private:
std::deque<DocumentSource::GetNextResult> _mockResults;
};
} // namespace mongo
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