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author | Judah Schvimer <judah@mongodb.com> | 2017-12-12 15:47:48 -0500 |
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committer | Judah Schvimer <judah@mongodb.com> | 2018-01-03 10:53:29 -0500 |
commit | 8c0485475323b1e0582f56a071878339c78ee01d (patch) | |
tree | 6e3c5a46df7f58159a6ea59a75de6c3c7c5bfa4d /src/mongo/db/repl/timestamp_block.h | |
parent | cd3c4280d4b083591198960ab43201c4d1431a46 (diff) | |
download | mongo-8c0485475323b1e0582f56a071878339c78ee01d.tar.gz |
SERVER-32188 SERVER-32187 Have secondaries apply timestamps to commands
Diffstat (limited to 'src/mongo/db/repl/timestamp_block.h')
-rw-r--r-- | src/mongo/db/repl/timestamp_block.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/mongo/db/repl/timestamp_block.h b/src/mongo/db/repl/timestamp_block.h new file mode 100644 index 00000000000..c4c7d81506b --- /dev/null +++ b/src/mongo/db/repl/timestamp_block.h @@ -0,0 +1,68 @@ +/** + * + * Copyright (C) 2017 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 "mongo/base/disallow_copying.h" +#include "mongo/bson/timestamp.h" +#include "mongo/db/operation_context.h" +#include "mongo/db/storage/recovery_unit.h" + +namespace mongo { + +/** + * TimestampBlock is an raii type that sets a commit timestamp on the RecoveryUnit at construction + * and clears it at destruction. RecoveryUnit::setTimestamp() should not be called while a + * TimestampBlock is in scope. + */ +class TimestampBlock { + MONGO_DISALLOW_COPYING(TimestampBlock); + +public: + TimestampBlock(OperationContext* opCtx, Timestamp ts) : _opCtx(opCtx), _ts(ts) { + uassert(ErrorCodes::IllegalOperation, + "Cannot timestamp a write operation in read-only mode", + !storageGlobalParams.readOnly); + if (!_ts.isNull()) { + _opCtx->recoveryUnit()->setCommitTimestamp(_ts); + } + } + + ~TimestampBlock() { + if (!_ts.isNull()) { + _opCtx->recoveryUnit()->clearCommitTimestamp(); + } + } + +private: + OperationContext* const _opCtx; + Timestamp _ts; +}; + +} // namespace mongo |