1 files changed, 83 insertions, 0 deletions
diff --git a/src/mongo/db/repl/optime.h b/src/mongo/db/repl/optime.h
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+++ b/src/mongo/db/repl/optime.h
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+/**
+*    Copyright (C) 2015 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 <tuple>
+#include <utility>
+
+#include "mongo/bson/timestamp.h"
+
+namespace mongo {
+namespace repl {
+
+    class OpTime {
+    public:
+        OpTime() = default;
+        OpTime(Timestamp ts, long long term) : _timestamp(std::move(ts)), _term(term) {}
+
+        Timestamp getTimestamp() const {
+            return _timestamp;
+        }
+
+        long long getTerm() const {
+            return _term;
+        }
+
+    private:
+        Timestamp _timestamp;
+        long long _term = -1;
+    };
+
+    inline bool operator==(const OpTime& lhs, const OpTime& rhs) {
+        return std::tie(lhs.opTime, lhs.term) == std::tie(rhs.opTime, rhs.term);
+    }
+
+    inline bool operator<(const OpTime& lhs, const OpTime& rhs) {
+        // Compare term first, then the opTimes.
+        return std::tie(lhs.term, lhs.opTime) < std::tie(rhs.term, rhs.opTime);
+    }
+
+    inline bool operator!=(const OpTime& lhs, const OpTime& rhs) {
+        return !(lhs == rhs);
+    }
+
+    inline bool operator<=(const OpTime& lhs, const OpTime& rhs) {
+        return lhs < rhs || lhs == rhs;
+    }
+
+    inline bool operator>(const OpTime& lhs, const OpTime& rhs) {
+        return !(lhs <= rhs);
+    }
+
+    inline bool operator>=(const OpTime& lhs, const OpTime& rhs) {
+        return !(lhs < rhs);
+    }
+
+} // namespace repl
+} // namespace mongo