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/**
* 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/bson/timestamp.h"
#include "mongo/db/logical_session_id.h"
#include "mongo/db/session_txn_record_gen.h"
namespace mongo {
inline bool operator==(const SessionTxnRecord& lhs, const SessionTxnRecord& rhs) {
return (lhs.getSessionId() == rhs.getSessionId()) && (lhs.getTxnNum() == rhs.getTxnNum()) &&
(lhs.getLastWriteOpTimeTs() == rhs.getLastWriteOpTimeTs());
}
inline bool operator!=(const SessionTxnRecord& lhs, const SessionTxnRecord& rhs) {
return !(lhs == rhs);
}
/**
* A record is greater (i.e. later) than another if its transaction number is greater, or if its
* transaction number is the same, and its last write optime is greater. Records can only be
* compared meaningfully for the same session id.
*/
inline bool operator>(const SessionTxnRecord& lhs, const SessionTxnRecord& rhs) {
invariant(lhs.getSessionId() == rhs.getSessionId());
return (lhs.getTxnNum() > rhs.getTxnNum()) ||
(lhs.getTxnNum() == rhs.getTxnNum() &&
lhs.getLastWriteOpTimeTs() > rhs.getLastWriteOpTimeTs());
}
SessionTxnRecord makeSessionTxnRecord(LogicalSessionId lsid, TxnNumber txnNum, Timestamp ts);
} // namespace mongo
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