| // 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. |
| // |
| |
| // Package zpages implements a collection of HTML pages that display RPC stats |
| // and trace data, and also functions to write that same data in plain text to |
| // an io.Writer. |
| // |
| // Users can also embed the HTML for stats and traces in custom status pages. |
| // |
| // To add the handlers to the default HTTP request multiplexer with the patterns |
| // /rpcz and /tracez, call: |
| // zpages.AddDefaultHTTPHandlers() |
| // If your program does not already start an HTTP server, you can use: |
| // go func() { log.Fatal(http.ListenAndServe(":8080", nil)) }() |
| // |
| // zpages are currrently work-in-process and cannot display minutely and |
| // hourly stats correctly. |
| package zpages // import "go.opencensus.io/zpages" |
| |
| import ( |
| "net/http" |
| "sync" |
| ) |
| |
| var once sync.Once |
| |
| // AddDefaultHTTPHandlers adds handlers for /rpcz and /tracez to the default HTTP request multiplexer. |
| func AddDefaultHTTPHandlers() { |
| once.Do(func() { |
| http.HandleFunc("/rpcz", RpczHandler) |
| http.HandleFunc("/tracez", TracezHandler) |
| }) |
| } |