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Source file src/net/rpc/debug.go

Documentation: net/rpc

  // Copyright 2009 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  package rpc
  	Some HTML presented at http://machine:port/debug/rpc
  	Lists services, their methods, and some statistics, still rudimentary.
  import (
  const debugText = `<html>
  	{{range .}}
  	Service {{.Name}}
  		<th align=center>Method</th><th align=center>Calls</th>
  		{{range .Method}}
  			<td align=left font=fixed>{{.Name}}({{.Type.ArgType}}, {{.Type.ReplyType}}) error</td>
  			<td align=center>{{.Type.NumCalls}}</td>
  var debug = template.Must(template.New("RPC debug").Parse(debugText))
  // If set, print log statements for internal and I/O errors.
  var debugLog = false
  type debugMethod struct {
  	Type *methodType
  	Name string
  type methodArray []debugMethod
  type debugService struct {
  	Service *service
  	Name    string
  	Method  methodArray
  type serviceArray []debugService
  func (s serviceArray) Len() int           { return len(s) }
  func (s serviceArray) Less(i, j int) bool { return s[i].Name < s[j].Name }
  func (s serviceArray) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
  func (m methodArray) Len() int           { return len(m) }
  func (m methodArray) Less(i, j int) bool { return m[i].Name < m[j].Name }
  func (m methodArray) Swap(i, j int)      { m[i], m[j] = m[j], m[i] }
  type debugHTTP struct {
  // Runs at /debug/rpc
  func (server debugHTTP) ServeHTTP(w http.ResponseWriter, req *http.Request) {
  	// Build a sorted version of the data.
  	var services serviceArray
  	server.serviceMap.Range(func(snamei, svci interface{}) bool {
  		svc := svci.(*service)
  		ds := debugService{svc, snamei.(string), make(methodArray, 0, len(svc.method))}
  		for mname, method := range svc.method {
  			ds.Method = append(ds.Method, debugMethod{method, mname})
  		services = append(services, ds)
  		return true
  	err := debug.Execute(w, services)
  	if err != nil {
  		fmt.Fprintln(w, "rpc: error executing template:", err.Error())

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