| // Copyright 2016 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 logging_test |
| |
| import ( |
| "cloud.google.com/go/logging" |
| "go.opencensus.io/trace" |
| "golang.org/x/net/context" |
| ) |
| |
| // This example shows how to create a Logger that disables OpenCensus tracing of the |
| // WriteLogEntries RPC. |
| func ExampleContextFunc() { |
| ctx := context.Background() |
| client, err := logging.NewClient(ctx, "my-project") |
| if err != nil { |
| // TODO: Handle error. |
| } |
| lg := client.Logger("logID", logging.ContextFunc(func() (context.Context, func()) { |
| ctx, span := trace.StartSpan(context.Background(), "this span will not be exported", |
| trace.WithSampler(trace.NeverSample())) |
| return ctx, span.End |
| })) |
| _ = lg // TODO: Use lg |
| } |