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- // Copyright 2018, 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 main
-
- import (
- "log"
- "net/http"
- "time"
-
- "go.opencensus.io/plugin/ochttp"
- "go.opencensus.io/trace"
-
- "go.opencensus.io/examples/exporter"
- "go.opencensus.io/stats/view"
- )
-
- const server = "http://localhost:50030"
-
- func main() {
- // Register stats and trace exporters to export the collected data.
- exporter := &exporter.PrintExporter{}
- view.RegisterExporter(exporter)
- trace.RegisterExporter(exporter)
-
- // Always trace for this demo. In a production application, you should
- // configure this to a trace.ProbabilitySampler set at the desired
- // probability.
- trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
-
- // Report stats at every second.
- view.SetReportingPeriod(1 * time.Second)
-
- client := &http.Client{Transport: &ochttp.Transport{}}
-
- resp, err := client.Get(server)
- if err != nil {
- log.Printf("Failed to get response: %v", err)
- } else {
- resp.Body.Close()
- }
-
- time.Sleep(2 * time.Second) // Wait until stats are reported.
- }
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