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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 <memory>
-
-namespace mongo {
-
-class ServiceContext;
-class SessionsCollection;
-class OperationContext;
-
-/**
- * TransactionReaper is responsible for scanning the transaction table, checking if sessions are
- * still alive and deleting the transaction records if their sessions have expired.
- */
-class TransactionReaper {
-public:
- enum class Type {
- kReplicaSet,
- kSharded,
- };
-
- virtual ~TransactionReaper() = 0;
-
- virtual int reap(OperationContext* OperationContext) = 0;
-
- /**
- * The implementation of the sessions collections is different in replica sets versus sharded
- * clusters, so we have a factory to pick the right impl.
- */
- static std::unique_ptr<TransactionReaper> make(Type type,
- std::shared_ptr<SessionsCollection> collection);
-};
-
-} // namespace mongo