1 files changed, 110 insertions, 0 deletions
diff --git a/src/mongo/db/catalog/commit_quorum_options.cpp b/src/mongo/db/catalog/commit_quorum_options.cpp
new file mode 100644
index 00000000000..ac9d90334f1
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+++ b/src/mongo/db/catalog/commit_quorum_options.cpp
@@ -0,0 +1,110 @@
+/**
+ *    Copyright (C) 2019-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    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
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    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 Server Side 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.
+ */
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/catalog/commit_quorum_options.h"
+
+#include "mongo/base/status.h"
+#include "mongo/base/string_data.h"
+#include "mongo/bson/util/bson_extract.h"
+#include "mongo/db/field_parser.h"
+#include "mongo/util/mongoutils/str.h"
+
+namespace mongo {
+
+const StringData CommitQuorumOptions::kCommitQuorumField = "commitQuorum"_sd;
+const char CommitQuorumOptions::kMajority[] = "majority";
+
+const BSONObj CommitQuorumOptions::Majority(BSON(kCommitQuorumField
+                                                 << CommitQuorumOptions::kMajority));
+
+CommitQuorumOptions::CommitQuorumOptions(int numNodesOpts) {
+    reset();
+    numNodes = numNodesOpts;
+    invariant(numNodes >= 0);
+}
+
+CommitQuorumOptions::CommitQuorumOptions(const std::string& modeOpts) {
+    reset();
+    mode = modeOpts;
+    invariant(!mode.empty());
+}
+
+Status CommitQuorumOptions::parse(const BSONObj& obj) {
+    reset();
+    if (obj.isEmpty()) {
+        return Status(ErrorCodes::FailedToParse, "commit quorum object cannot be empty");
+    }
+
+    BSONElement commitQuorumElement;
+
+    for (auto field : obj) {
+        const auto fieldName = field.fieldNameStringData();
+        if (fieldName == kCommitQuorumField) {
+            commitQuorumElement = field;
+        } else {
+            return Status(ErrorCodes::FailedToParse,
+                          str::stream() << "unrecognized commit quorum field: " << fieldName);
+        }
+    }
+
+    if (commitQuorumElement.isNumber()) {
+        numNodes = commitQuorumElement.numberInt();
+    } else if (commitQuorumElement.type() == String) {
+        mode = commitQuorumElement.valuestrsafe();
+    } else if (commitQuorumElement.eoo() || commitQuorumElement.type() == jstNULL ||
+               commitQuorumElement.type() == Undefined) {
+        numNodes = 1;
+    } else {
+        return Status(ErrorCodes::FailedToParse, "commitQuorum has to be a number or a string");
+    }
+
+    return Status::OK();
+}
+
+CommitQuorumOptions CommitQuorumOptions::deserializerForIDL(const BSONObj& obj) {
+    CommitQuorumOptions commitQuorumOptions;
+    uassertStatusOK(commitQuorumOptions.parse(obj));
+    return commitQuorumOptions;
+}
+
+BSONObj CommitQuorumOptions::toBSON() const {
+    BSONObjBuilder builder;
+
+    if (mode.empty()) {
+        builder.append(kCommitQuorumField, numNodes);
+    } else {
+        builder.append(kCommitQuorumField, mode);
+    }
+
+    return builder.obj();
+}
+
+}  // namespace mongo