// 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 ( "fmt" "html/template" "net/http" "sort" ) const debugText = ` Services {{range .}}
Service {{.Name}}
{{range .Method}} {{end}}
MethodCalls
{{.Name}}({{.Type.ArgType}}, {{.Type.ReplyType}}) error {{.Type.NumCalls}}
{{end}} ` 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 { *Server } // 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 any) 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}) } sort.Sort(ds.Method) services = append(services, ds) return true }) sort.Sort(services) err := debug.Execute(w, services) if err != nil { fmt.Fprintln(w, "rpc: error executing template:", err.Error()) } }