| // 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 ochttp_test |
| |
| import ( |
| "log" |
| "net/http" |
| |
| "go.opencensus.io/plugin/ochttp" |
| "go.opencensus.io/plugin/ochttp/propagation/b3" |
| "go.opencensus.io/stats/view" |
| "go.opencensus.io/tag" |
| ) |
| |
| func ExampleTransport() { |
| // import ( |
| // "go.opencensus.io/plugin/ochttp" |
| // "go.opencensus.io/stats/view" |
| // ) |
| |
| if err := view.Register( |
| // Register a few default views. |
| ochttp.ClientSentBytesDistribution, |
| ochttp.ClientReceivedBytesDistribution, |
| ochttp.ClientRoundtripLatencyDistribution, |
| // Register a custom view. |
| &view.View{ |
| Name: "httpclient_latency_by_path", |
| TagKeys: []tag.Key{ochttp.KeyClientPath}, |
| Measure: ochttp.ClientRoundtripLatency, |
| Aggregation: ochttp.DefaultLatencyDistribution, |
| }, |
| ); err != nil { |
| log.Fatal(err) |
| } |
| |
| client := &http.Client{ |
| Transport: &ochttp.Transport{}, |
| } |
| |
| // Use client to perform requests. |
| _ = client |
| } |
| |
| var usersHandler http.Handler |
| |
| func ExampleHandler() { |
| // import "go.opencensus.io/plugin/ochttp" |
| |
| http.Handle("/users", ochttp.WithRouteTag(usersHandler, "/users")) |
| |
| // If no handler is specified, the default mux is used. |
| log.Fatal(http.ListenAndServe("localhost:8080", &ochttp.Handler{})) |
| } |
| |
| func ExampleHandler_mux() { |
| // import "go.opencensus.io/plugin/ochttp" |
| |
| mux := http.NewServeMux() |
| mux.Handle("/users", ochttp.WithRouteTag(usersHandler, "/users")) |
| log.Fatal(http.ListenAndServe("localhost:8080", &ochttp.Handler{ |
| Handler: mux, |
| Propagation: &b3.HTTPFormat{}, |
| })) |
| } |