1 files changed, 82 insertions, 0 deletions
diff --git a/src/mongo/db/keys_collection_util.cpp b/src/mongo/db/keys_collection_util.cpp
new file mode 100644
index 00000000000..bd16f9c0f67
--- /dev/null
+++ b/src/mongo/db/keys_collection_util.cpp
@@ -0,0 +1,82 @@
+/**
+ *    Copyright (C) 2023-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/db/keys_collection_util.h"
+
+#include "mongo/db/catalog_raii.h"
+#include "mongo/db/concurrency/exception_util.h"
+#include "mongo/db/dbhelpers.h"
+#include "mongo/db/keys_collection_document_gen.h"
+#include "mongo/db/operation_context.h"
+#include "mongo/db/repl/repl_client_info.h"
+
+namespace mongo {
+namespace keys_collection_util {
+
+ExternalKeysCollectionDocument makeExternalClusterTimeKeyDoc(BSONObj keyDoc,
+                                                             boost::optional<UUID> migrationId,
+                                                             boost::optional<Date_t> expireAt) {
+    auto originalKeyDoc = KeysCollectionDocument::parse(IDLParserErrorContext("keyDoc"), keyDoc);
+
+    ExternalKeysCollectionDocument externalKeyDoc(OID::gen(), originalKeyDoc.getKeyId());
+    externalKeyDoc.setMigrationId(migrationId);
+    externalKeyDoc.setKeysCollectionDocumentBase(originalKeyDoc.getKeysCollectionDocumentBase());
+    externalKeyDoc.setTTLExpiresAt(expireAt);
+
+    return externalKeyDoc;
+}
+
+repl::OpTime storeExternalClusterTimeKeyDocs(OperationContext* opCtx,
+                                             std::vector<ExternalKeysCollectionDocument> keyDocs) {
+    auto nss = NamespaceString::kExternalKeysCollectionNamespace;
+
+    for (auto& keyDoc : keyDocs) {
+        AutoGetCollection collection(opCtx, nss, MODE_IX);
+
+        writeConflictRetry(opCtx, "CloneExternalKeyDocs", nss.ns(), [&] {
+            // Note that each external key's _id is generated by the migration, so this upsert can
+            // only insert.
+            const auto filter =
+                BSON(ExternalKeysCollectionDocument::kIdFieldName << keyDoc.getId());
+            const auto updateMod = keyDoc.toBSON();
+
+            Helpers::upsert(opCtx,
+                            nss.toString(),
+                            filter,
+                            updateMod,
+                            /*fromMigrate=*/false);
+        });
+    }
+
+    return repl::ReplClientInfo::forClient(opCtx->getClient()).getLastOp();
+}
+
+}  // namespace keys_collection_util
+}  // namespace mongo