diff options
Diffstat (limited to 'libgo/go/net/rpc/debug.go')
-rw-r--r-- | libgo/go/net/rpc/debug.go | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libgo/go/net/rpc/debug.go b/libgo/go/net/rpc/debug.go new file mode 100644 index 0000000..663663f --- /dev/null +++ b/libgo/go/net/rpc/debug.go @@ -0,0 +1,90 @@ +// 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" + "net/http" + "sort" + "text/template" +) + +const debugText = `<html> + <body> + <title>Services</title> + {{range .}} + <hr> + Service {{.Name}} + <hr> + <table> + <th align=center>Method</th><th align=center>Calls</th> + {{range .Method}} + <tr> + <td align=left font=fixed>{{.Name}}({{.Type.ArgType}}, {{.Type.ReplyType}}) error</td> + <td align=center>{{.Type.NumCalls}}</td> + </tr> + {{end}} + </table> + {{end}} + </body> + </html>` + +var debug = template.Must(template.New("RPC debug").Parse(debugText)) + +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 = make(serviceArray, len(server.serviceMap)) + i := 0 + server.mu.Lock() + for sname, service := range server.serviceMap { + services[i] = debugService{service, sname, make(methodArray, len(service.method))} + j := 0 + for mname, method := range service.method { + services[i].Method[j] = debugMethod{method, mname} + j++ + } + sort.Sort(services[i].Method) + i++ + } + server.mu.Unlock() + sort.Sort(services) + err := debug.Execute(w, services) + if err != nil { + fmt.Fprintln(w, "rpc: error executing template:", err.Error()) + } +} |