diff options
| -rw-r--r-- | src/mongo/db/SConscript | 2 | ||||
| -rw-r--r-- | src/mongo/db/session.h | 2 | ||||
| -rw-r--r-- | src/mongo/db/transaction_coordinator.cpp | 53 | ||||
| -rw-r--r-- | src/mongo/db/transaction_coordinator.h | 55 | ||||
| -rw-r--r-- | src/mongo/db/transaction_participant.cpp | 53 | ||||
| -rw-r--r-- | src/mongo/db/transaction_participant.h | 55 |
6 files changed, 219 insertions, 1 deletions
diff --git a/src/mongo/db/SConscript b/src/mongo/db/SConscript index 54445e732fd..7739779e9cc 100644 --- a/src/mongo/db/SConscript +++ b/src/mongo/db/SConscript @@ -615,6 +615,8 @@ env.Library( 'server_transactions_metrics.cpp', 'session.cpp', 'session_catalog.cpp', + 'transaction_coordinator.cpp', + 'transaction_participant.cpp', 'transaction_history_iterator.cpp', env.Idlc('session_txn_record.idl')[0], env.Idlc('transactions_stats.idl')[0], diff --git a/src/mongo/db/session.h b/src/mongo/db/session.h index e95ba535ae4..53a22f0cc82 100644 --- a/src/mongo/db/session.h +++ b/src/mongo/db/session.h @@ -60,7 +60,7 @@ class UpdateRequest; * refresh' (in which case refreshFromStorageIfNeeded needs to be called in order to make it * up-to-date). */ -class Session { +class Session : public Decorable<Session> { MONGO_DISALLOW_COPYING(Session); public: diff --git a/src/mongo/db/transaction_coordinator.cpp b/src/mongo/db/transaction_coordinator.cpp new file mode 100644 index 00000000000..c0f6811746c --- /dev/null +++ b/src/mongo/db/transaction_coordinator.cpp @@ -0,0 +1,53 @@ +/** + * Copyright (C) 2018 MongoDB, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * 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 + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * 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 GNU Affero General 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. + */ + +#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding + +#include "mongo/platform/basic.h" + +#include "mongo/db/transaction_coordinator.h" + +#include "mongo/db/session.h" + +namespace mongo { + +namespace { +const Session::Decoration<boost::optional<TransactionCoordinator>> getTransactionCoordinator = + Session::declareDecoration<boost::optional<TransactionCoordinator>>(); +} // namespace + +boost::optional<TransactionCoordinator>& TransactionCoordinator::get(Session* session) { + return getTransactionCoordinator(session); +} + +void TransactionCoordinator::create(Session* session) { + invariant(!getTransactionCoordinator(session)); + getTransactionCoordinator(session).emplace(); +} + +} // namespace mongo diff --git a/src/mongo/db/transaction_coordinator.h b/src/mongo/db/transaction_coordinator.h new file mode 100644 index 00000000000..a74a607bfdd --- /dev/null +++ b/src/mongo/db/transaction_coordinator.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2018 MongoDB, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * 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 + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * 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 GNU Affero General 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 "mongo/base/disallow_copying.h" +#include "mongo/util/decorable.h" + +namespace mongo { + +class Session; + +/** + * A state machine that coordinates a distributed transaction commit with the transaction + * participants. + */ +class TransactionCoordinator { + MONGO_DISALLOW_COPYING(TransactionCoordinator); + +public: + TransactionCoordinator() = default; + ~TransactionCoordinator() = default; + + static boost::optional<TransactionCoordinator>& get(Session* session); + static void create(Session* session); +}; + +} // namespace mongo diff --git a/src/mongo/db/transaction_participant.cpp b/src/mongo/db/transaction_participant.cpp new file mode 100644 index 00000000000..91b32184f97 --- /dev/null +++ b/src/mongo/db/transaction_participant.cpp @@ -0,0 +1,53 @@ +/** + * Copyright (C) 2018 MongoDB, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * 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 + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * 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 GNU Affero General 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. + */ + +#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding + +#include "mongo/platform/basic.h" + +#include "mongo/db/transaction_participant.h" + +#include "mongo/db/session.h" + +namespace mongo { + +namespace { +const Session::Decoration<boost::optional<TransactionParticipant>> getTransactionParticipant = + Session::declareDecoration<boost::optional<TransactionParticipant>>(); +} // namespace + +boost::optional<TransactionParticipant>& TransactionParticipant::get(Session* session) { + return getTransactionParticipant(session); +} + +void TransactionParticipant::create(Session* session) { + invariant(!getTransactionParticipant(session)); + getTransactionParticipant(session).emplace(); +} + +} // namespace mongo diff --git a/src/mongo/db/transaction_participant.h b/src/mongo/db/transaction_participant.h new file mode 100644 index 00000000000..57fef52c023 --- /dev/null +++ b/src/mongo/db/transaction_participant.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2018 MongoDB, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * 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 + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * 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 GNU Affero General 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 "mongo/base/disallow_copying.h" +#include "mongo/util/decorable.h" + +namespace mongo { + +class Session; + +/** + * A state machine that coordinates a distributed transaction commit with the transaction + * coordinator. + */ +class TransactionParticipant { + MONGO_DISALLOW_COPYING(TransactionParticipant); + +public: + TransactionParticipant() = default; + ~TransactionParticipant() = default; + + static boost::optional<TransactionParticipant>& get(Session* session); + static void create(Session* session); +}; + +} // namespace mongo |