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Diffstat (limited to 'src/mongo/db/repl/tenant_migration_recipient_service.h')
-rw-r--r-- | src/mongo/db/repl/tenant_migration_recipient_service.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/mongo/db/repl/tenant_migration_recipient_service.h b/src/mongo/db/repl/tenant_migration_recipient_service.h new file mode 100644 index 00000000000..c57fdb1a062 --- /dev/null +++ b/src/mongo/db/repl/tenant_migration_recipient_service.h @@ -0,0 +1,96 @@ +/** + * 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 |