1 files changed, 23 insertions, 0 deletions
diff --git a/grpc/src/core/ext/filters/client_channel/lb_policy/ring_hash/ring_hash.cc b/grpc/src/core/ext/filters/client_channel/lb_policy/ring_hash/ring_hash.cc
new file mode 100644
index 00000000..921bd2e0
--- /dev/null
+++ b/grpc/src/core/ext/filters/client_channel/lb_policy/ring_hash/ring_hash.cc
@@ -0,0 +1,23 @@
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+namespace grpc_core {
+
+const char* kRequestRingHashAttribute = "request_ring_hash";
+
+}  // namespace grpc_core