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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/pipeline/stub_mongo_process_interface_lookup_single_document.h"
#include "mongo/db/pipeline/document_source.h"
#include "mongo/db/pipeline/document_source_mock.h"
#include "mongo/util/assert_util.h"
namespace mongo {
std::unique_ptr<Pipeline, PipelineDeleter>
StubMongoProcessInterfaceLookupSingleDocument::makePipeline(
const std::vector<BSONObj>& rawPipeline,
const boost::intrusive_ptr<ExpressionContext>& expCtx,
const MakePipelineOptions opts) {
auto pipeline = uassertStatusOK(Pipeline::parse(rawPipeline, expCtx));
if (opts.optimize) {
pipeline->optimizePipeline();
}
if (opts.attachCursorSource) {
pipeline = attachCursorSourceToPipeline(expCtx, pipeline.release());
}
return pipeline;
}
std::unique_ptr<Pipeline, PipelineDeleter>
StubMongoProcessInterfaceLookupSingleDocument::attachCursorSourceToPipeline(
const boost::intrusive_ptr<ExpressionContext>& expCtx, Pipeline* ownedPipeline) {
std::unique_ptr<Pipeline, PipelineDeleter> pipeline(ownedPipeline,
PipelineDeleter(expCtx->opCtx));
pipeline->addInitialSource(DocumentSourceMock::create(_mockResults));
return pipeline;
}
boost::optional<Document> StubMongoProcessInterfaceLookupSingleDocument::lookupSingleDocument(
const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& nss,
UUID collectionUUID,
const Document& documentKey,
boost::optional<BSONObj> readConcern,
bool allowSpeculativeMajorityRead) {
// The namespace 'nss' may be different than the namespace on the ExpressionContext in the
// case of a change stream on a whole database so we need to make a copy of the
// ExpressionContext with the new namespace.
auto foreignExpCtx = expCtx->copyWith(nss, collectionUUID, boost::none);
std::unique_ptr<Pipeline, PipelineDeleter> pipeline;
try {
pipeline = makePipeline({BSON("$match" << documentKey)}, foreignExpCtx);
} catch (ExceptionFor<ErrorCodes::NamespaceNotFound>&) {
return boost::none;
}
auto lookedUpDocument = pipeline->getNext();
if (auto next = pipeline->getNext()) {
uasserted(ErrorCodes::TooManyMatchingDocuments,
str::stream() << "found more than one document matching "
<< documentKey.toString()
<< " ["
<< lookedUpDocument->toString()
<< ", "
<< next->toString()
<< "]");
}
return lookedUpDocument;
}
} // namespace mongo
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