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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/collmod_coordinator_document_gen.h"
-#include "mongo/db/s/sharding_ddl_coordinator.h"
-#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
-#include "mongo/stdx/mutex.h"
-
-namespace mongo {
-
-class CollModCoordinatorPre60Compatible final : public ShardingDDLCoordinator {
-public:
- using StateDoc = CollModCoordinatorDocument;
- using Phase = CollModCoordinatorPhaseEnum;
-
- CollModCoordinatorPre60Compatible(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 termination of the parent DDLCoordinator (so all the resources are liberated)
- * and then return the result.
- */
- BSONObj getResult(OperationContext* opCtx) {
- getCompletionFuture().get(opCtx);
- invariant(_result.is_initialized());
- return *_result;
- }
-
-private:
- ShardingDDLCoordinatorMetadata const& metadata() const override {
- stdx::lock_guard l{_docMutex};
- return _doc.getShardingDDLCoordinatorMetadata();
- }
-
- ExecutorFuture<void> _runImpl(std::shared_ptr<executor::ScopedTaskExecutor> executor,
- const CancellationToken& token) noexcept override;
-
- template <typename Func>
- auto _executePhase(const Phase& newPhase, Func&& func) {
- return [=] {
- const auto& currPhase = _doc.getPhase();
-
- if (currPhase > newPhase) {
- // Do not execute this phase if we already reached a subsequent one.
- return;
- }
- if (currPhase < newPhase) {
- // Persist the new phase if this is the first time we are executing it.
- _enterPhase(newPhase);
- }
- return func();
- };
- }
-
- void _enterPhase(Phase newPhase);
-
- void _performNoopRetryableWriteOnParticipants(
- OperationContext* opCtx, const std::shared_ptr<executor::TaskExecutor>& executor);
-
- BSONObj _initialState;
- mutable Mutex _docMutex = MONGO_MAKE_LATCH("CollModCoordinatorPre60Compatible::_docMutex");
- CollModCoordinatorDocument _doc;
-
- boost::optional<BSONObj> _result;
-};
-
-} // namespace mongo