SERVER-68826 Introduce the server_base library

1 files changed, 57 insertions, 0 deletions

diff --git a/src/mongo/db/shard_id.cpp b/src/mongo/db/shard_id.cpp
new file mode 100644
index 00000000000..39d66aa56a7
--- /dev/null
+++ b/src/mongo/db/shard_id.cpp
@@ -0,0 +1,57 @@
+/**
+ *    Copyright (C) 2018-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/shard_id.h"
+
+#include <functional>
+
+namespace mongo {
+
+const ShardId ShardId::kConfigServerId("config");
+
+bool ShardId::isValid() const {
+    return !_shardId.empty();
+}
+
+Status ShardId::validate(const ShardId& value) {
+    if (!value.isValid()) {
+        return {ErrorCodes::NoSuchKey, "Shard ID cannot be empty"};
+    }
+    return Status::OK();
+}
+
+int ShardId::compare(const ShardId& other) const {
+    return _shardId.compare(other._shardId);
+}
+
+std::size_t ShardId::Hasher::operator()(const ShardId& shardId) const {
+    return std::hash<std::string>()(shardId._shardId);
+}
+
+}  // namespace mongo