SERVER-45623 read/write concern provenance

1 files changed, 61 insertions, 0 deletions

diff --git a/src/mongo/db/read_write_concern_provenance.cpp b/src/mongo/db/read_write_concern_provenance.cpp
new file mode 100644
index 00000000000..591ed77679d
--- /dev/null
+++ b/src/mongo/db/read_write_concern_provenance.cpp
@@ -0,0 +1,61 @@
+/**
+ *    Copyright (C) 2020-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/read_write_concern_provenance.h"
+
+#include "mongo/db/server_options.h"
+
+namespace mongo {
+
+void ReadWriteConcernProvenance::setSource(boost::optional<Source> source) & {
+    invariant(!hasSource() || getSource() == source,
+              str::stream() << "attempting to re-set provenance, from "
+                            << sourceToString(getSource()) << " to " << sourceToString(source));
+    ReadWriteConcernProvenanceBase::setSource(std::move(source));
+}
+
+ReadWriteConcernProvenance ReadWriteConcernProvenance::parse(const IDLParserErrorContext& ctxt,
+                                                             const BSONObj& bsonObject) {
+    return ReadWriteConcernProvenance(ReadWriteConcernProvenanceBase::parse(ctxt, bsonObject));
+}
+
+void ReadWriteConcernProvenance::serialize(BSONObjBuilder* builder) const {
+    if (serverGlobalParams.featureCompatibility.isVersion(
+            ServerGlobalParams::FeatureCompatibility::Version::kFullyUpgradedTo44)) {
+        ReadWriteConcernProvenanceBase::serialize(builder);
+    }
+}
+
+StringData ReadWriteConcernProvenance::sourceToString(boost::optional<Source> source) {
+    return source ? ReadWriteConcernProvenanceSource_serializer(*source) : "(unset)";
+}
+
+}  // namespace mongo