1 files changed, 51 insertions, 0 deletions
diff --git a/src/lib/database/server_selector.cc b/src/lib/database/server_selector.cc
new file mode 100644
index 0000000..18fbdbd
--- /dev/null
+++ b/src/lib/database/server_selector.cc
@@ -0,0 +1,51 @@
+// Copyright (C) 2019-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <database/server_selector.h>
+#include <exceptions/exceptions.h>
+
+using namespace isc::data;
+
+namespace isc {
+namespace db {
+
+ServerSelector
+ServerSelector::MULTIPLE(const std::set<std::string>& server_tags) {
+    if (server_tags.empty()) {
+        isc_throw(InvalidOperation, "ServerSelector: expecting at least one"
+                  " server tag");
+    }
+
+    std::set<ServerTag> tags;
+
+    // Create a set of tags from strings.
+    for (auto tag : server_tags) {
+        tags.insert(ServerTag(tag));
+    }
+
+    ServerSelector selector(tags);
+    return (selector);
+}
+
+ServerSelector::ServerSelector(const Type& type)
+    : type_(type), tags_() {
+    if (type_ == Type::ALL) {
+        tags_.insert(ServerTag());
+    }
+}
+
+ServerSelector::ServerSelector(const ServerTag& server_tag)
+    : type_(server_tag.amAll() ? Type::ALL : Type::SUBSET), tags_({server_tag}) {
+}
+
+ServerSelector::ServerSelector(const std::set<ServerTag>& server_tags)
+    : type_(Type::SUBSET), tags_(server_tags) {
+}
+
+} // end of namespace isc::db
+} // end of namespace isc