SERVER-19205 change all ReadAfterOpTime objects to be ReadConcern objects

1 files changed, 78 insertions, 0 deletions

diff --git a/src/mongo/db/repl/read_concern_args.h b/src/mongo/db/repl/read_concern_args.h
new file mode 100644
index 00000000000..90d558b832f
--- /dev/null
+++ b/src/mongo/db/repl/read_concern_args.h
@@ -0,0 +1,78 @@
+/**
+ *    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 <string>
+
+#include "mongo/base/status.h"
+#include "mongo/db/repl/optime.h"
+#include "mongo/util/time_support.h"
+
+namespace mongo {
+
+class BSONObj;
+
+namespace repl {
+
+class ReadConcernArgs {
+public:
+    static const std::string kReadConcernFieldName;
+    static const std::string kOpTermFieldName;
+    static const std::string kOpTimeFieldName;
+    static const std::string kOpTimestampFieldName;
+    static const std::string kLevelFieldName;
+
+    enum class ReadConcernLevel { kLocalReadConcern, kMajorityReadConcern, kLinearizableReadConcern };
+
+    ReadConcernArgs();
+    ReadConcernArgs(OpTime opTime, ReadConcernLevel level);
+
+    /**
+     * Format:
+     * {
+     *    find: “coll”,
+     *    filter: <Query Object>,
+     *    readConcern: { // optional
+     *      level: "[majority|local|linearizable]",
+     *      afterOpTime: { ts: <timestamp>, term: <NumberLong> },
+     *    }
+     * }
+     */
+    Status initialize(const BSONObj& cmdObj);
+
+    ReadConcernLevel getLevel() const;
+    const OpTime& getOpTime() const;
+
+private:
+    OpTime _opTime;
+    ReadConcernLevel _level;
+};
+
+}  // namespace repl
+}  // namespace mongo