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/**
* Copyright (C) 2021-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/s/sharded_rename_collection_gen.h"
#include "mongo/db/s/sharding_ddl_coordinator.h"
#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
namespace mongo {
class RenameCollectionCoordinator final
: public RecoverableShardingDDLCoordinator<RenameCollectionCoordinatorDocument,
RenameCollectionCoordinatorPhaseEnum> {
public:
using StateDoc = RenameCollectionCoordinatorDocument;
using Phase = RenameCollectionCoordinatorPhaseEnum;
RenameCollectionCoordinator(ShardingDDLCoordinatorService* service,
const BSONObj& initialState);
void checkIfOptionsConflict(const BSONObj& doc) const override;
boost::optional<BSONObj> reportForCurrentOp(
MongoProcessInterface::CurrentOpConnectionsMode connMode,
MongoProcessInterface::CurrentOpSessionsMode sessionMode) noexcept override;
/**
* Waits for the rename to complete and returns the collection version.
*/
RenameCollectionResponse getResponse(OperationContext* opCtx) {
getCompletionFuture().get(opCtx);
invariant(_response);
return *_response;
}
private:
StringData serializePhase(const Phase& phase) const override {
return RenameCollectionCoordinatorPhase_serializer(phase);
}
bool _mustAlwaysMakeProgress() override {
return _doc.getPhase() >= Phase::kFreezeMigrations;
};
ExecutorFuture<void> _runImpl(std::shared_ptr<executor::ScopedTaskExecutor> executor,
const CancellationToken& token) noexcept override;
std::vector<StringData> _acquireAdditionalLocks(OperationContext* opCtx) override;
boost::optional<RenameCollectionResponse> _response;
const RenameCollectionRequest _request;
};
} // namespace mongo
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