Copyright 2017, OpenCensus 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.

package ocgrpc

import (
	
	

	
	
	
)
statsTagRPC gets the tag.Map populated by the application code, serializes its tags into the GRPC metadata in order to be sent to the server.
func ( *ClientHandler) ( context.Context,  *stats.RPCTagInfo) context.Context {
	 := time.Now()
	if  == nil {
		if grpclog.V(2) {
			grpclog.Info("clientHandler.TagRPC called with nil info.")
		}
		return 
	}

	 := &rpcData{
		startTime: ,
		method:    .FullMethodName,
	}
	 := tag.FromContext()
	if  != nil {
		 := tag.Encode()
		 = stats.SetTags(, )
	}

	return context.WithValue(, rpcDataKey, )