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+/**
+ * Copyright (C) 2020-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 <boost/optional.hpp>
+#include <memory>
+
+#include "mongo/db/repl/primary_only_service.h"
+#include "mongo/db/repl/tenant_migration_state_machine_gen.h"
+
+namespace mongo {
+
+class OperationContext;
+class ServiceContext;
+
+namespace repl {
+
+/**
+ * TenantMigrationRecipientService is a primary only service to handle
+ * data copy portion of a multitenant migration on recipient side.
+ */
+class TenantMigrationRecipientService final : public PrimaryOnlyService {
+ // Disallows copying.
+ TenantMigrationRecipientService(const TenantMigrationRecipientService&) = delete;
+ TenantMigrationRecipientService& operator=(const TenantMigrationRecipientService&) = delete;
+
+public:
+ static constexpr StringData kTenantMigrationRecipientServiceName =
+ "TenantMigrationRecipientService"_sd;
+
+ explicit TenantMigrationRecipientService(ServiceContext* serviceContext);
+ ~TenantMigrationRecipientService() = default;
+
+ StringData getServiceName() const final;
+
+ NamespaceString getStateDocumentsNS() const final;
+
+ ThreadPool::Limits getThreadPoolLimits() const final;
+
+ std::shared_ptr<PrimaryOnlyService::Instance> constructInstance(
+ BSONObj initialStateDoc) const final;
+
+ class Instance final : public PrimaryOnlyService::TypedInstance<Instance> {
+ public:
+ explicit Instance(BSONObj stateDoc);
+
+ SemiFuture<void> run(std::shared_ptr<executor::ScopedTaskExecutor> executor) noexcept final;
+
+ /*
+ * Returns the instance id.
+ */
+ const UUID& getMigrationUUID() const;
+
+ /*
+ * Returns true if the instance state doc is marked for garbage collect.
+ */
+ bool isMarkedForGarbageCollect() const;
+
+ private:
+ // Protects below data members.
+ mutable Mutex _mutex = MONGO_MAKE_LATCH("TenantMigrationRecipientService::_mutex");
+
+ TenantMigrationRecipientDocument _stateDoc;
+ };
+};
+
+
+} // namespace repl
+} // namespace mongo