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/**
* Copyright (C) 2023-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/db/pipeline/document_source_list_sampled_queries.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/logv2/log.h"
#include "mongo/s/analyze_shard_key_documents_gen.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
namespace mongo {
namespace analyze_shard_key {
REGISTER_DOCUMENT_SOURCE(listSampledQueries,
DocumentSourceListSampledQueries::LiteParsed::parse,
DocumentSourceListSampledQueries::createFromBson,
AllowedWithApiStrict::kNeverInVersion1);
boost::intrusive_ptr<DocumentSource> DocumentSourceListSampledQueries::createFromBson(
BSONElement specElem, const boost::intrusive_ptr<ExpressionContext>& pExpCtx) {
const NamespaceString& nss = pExpCtx->ns;
uassert(ErrorCodes::InvalidNamespace,
"$listSampledQueries must be run against the 'admin' database with {aggregate: 1}",
nss.db() == DatabaseName::kAdmin.db() && nss.isCollectionlessAggregateNS());
uassert(6876001,
str::stream() << kStageName << " must take a nested object but found: " << specElem,
specElem.type() == BSONType::Object);
auto spec = DocumentSourceListSampledQueriesSpec::parse(IDLParserContext(kStageName),
specElem.embeddedObject());
return make_intrusive<DocumentSourceListSampledQueries>(pExpCtx, std::move(spec));
}
Value DocumentSourceListSampledQueries::serialize(SerializationOptions opts) const {
if (opts.applyHmacToIdentifiers || opts.replacementForLiteralArgs) {
MONGO_UNIMPLEMENTED_TASSERT(6876002);
}
return Value(Document{{getSourceName(), _spec.toBSON()}});
}
DocumentSource::GetNextResult DocumentSourceListSampledQueries::doGetNext() {
if (_finished) {
return GetNextResult::makeEOF();
}
auto ns = _spec.getNamespace();
if (_cursor == nullptr) {
FindCommandRequest findRequest{NamespaceString::kConfigSampledQueriesNamespace};
if (ns) {
findRequest.setFilter(BSON(SampledQueryDocument::kNsFieldName << ns->toString()));
}
DBDirectClient client(pExpCtx->opCtx);
_cursor = client.find(std::move(findRequest));
}
if (_cursor->more()) {
const auto obj = _cursor->next().getOwned();
const auto doc = SampledQueryDocument::parse(
IDLParserContext(DocumentSourceListSampledQueries::kStageName), obj);
DocumentSourceListSampledQueriesResponse response;
response.setSampledQueryDocument(doc);
return {Document(response.toBSON())};
}
_finished = true;
return GetNextResult::makeEOF();
}
} // namespace analyze_shard_key
} // namespace mongo
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