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Diffstat (limited to 'src/mongo/db/serverless/tenant_split_donor_service.h')
-rw-r--r-- | src/mongo/db/serverless/tenant_split_donor_service.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/mongo/db/serverless/tenant_split_donor_service.h b/src/mongo/db/serverless/tenant_split_donor_service.h new file mode 100644 index 00000000000..8e964040341 --- /dev/null +++ b/src/mongo/db/serverless/tenant_split_donor_service.h @@ -0,0 +1,85 @@ +/** + * 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/repl/primary_only_service.h" + +namespace mongo { + +class TenantSplitDonorService final : public repl::PrimaryOnlyService { +public: + static constexpr StringData kServiceName = "TenantSplitDonorService"_sd; + + explicit TenantSplitDonorService(ServiceContext* const serviceContext) + : PrimaryOnlyService(serviceContext) {} + ~TenantSplitDonorService() = default; + + class DonorStateMachine; + + StringData getServiceName() const override { + return kServiceName; + } + + NamespaceString getStateDocumentsNS() const override { + return NamespaceString::kTenantSplitDonorsNamespace; + } + + ThreadPool::Limits getThreadPoolLimits() const override; + +protected: + std::shared_ptr<PrimaryOnlyService::Instance> constructInstance(BSONObj initialState) override; +}; + +class TenantSplitDonorService::DonorStateMachine final + : public repl::PrimaryOnlyService::TypedInstance<DonorStateMachine> { +public: + explicit DonorStateMachine(const TenantSplitDonorService* donorService, + const BSONObj& initialState); + + ~DonorStateMachine() = default; + + SemiFuture<void> run(std::shared_ptr<executor::ScopedTaskExecutor> executor, + const CancellationToken& token) noexcept override; + + void interrupt(Status status) override; + + /** + * Report TenantMigrationDonorService Instances in currentOp(). + */ + boost::optional<BSONObj> reportForCurrentOp( + MongoProcessInterface::CurrentOpConnectionsMode connMode, + MongoProcessInterface::CurrentOpSessionsMode sessionMode) noexcept override; + +private: + const TenantSplitDonorService* const _donorService; + mutable Mutex _mutex = MONGO_MAKE_LATCH("TenantSplitDonorService::_mutex"); +}; + +} // namespace mongo |