// Copyright 2018 Google LLC // // 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. // +build !go1.8 package trace import ( "golang.org/x/net/context" ) // OpenCensus only supports go 1.8 and higher. func StartSpan(ctx context.Context, _ string) context.Context { return ctx } func EndSpan(context.Context, error) { }