| // 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. |
| |
| // Command jaeger is an example program that creates spans |
| // and uploads to Jaeger. |
| package main |
| |
| import ( |
| "context" |
| "log" |
| |
| "go.opencensus.io/exporter/jaeger" |
| "go.opencensus.io/trace" |
| ) |
| |
| func main() { |
| ctx := context.Background() |
| |
| // Register the Jaeger exporter to be able to retrieve |
| // the collected spans. |
| exporter, err := jaeger.NewExporter(jaeger.Options{ |
| CollectorEndpoint: "http://localhost:14268/api/traces", |
| Process: jaeger.Process{ |
| ServiceName: "trace-demo", |
| }, |
| }) |
| if err != nil { |
| log.Fatal(err) |
| } |
| trace.RegisterExporter(exporter) |
| |
| // For demoing purposes, always sample. In a production application, you should |
| // configure this to a trace.ProbabilitySampler set at the desired |
| // probability. |
| trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()}) |
| |
| ctx, span := trace.StartSpan(ctx, "/foo") |
| bar(ctx) |
| span.End() |
| |
| exporter.Flush() |
| } |
| |
| func bar(ctx context.Context) { |
| ctx, span := trace.StartSpan(ctx, "/bar") |
| defer span.End() |
| |
| // Do bar... |
| } |