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// 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";
"gob";
"http";
"io";
"log";
"os";
"sort";
"template";
)
const debugText =
`<html>
<body>
<title>Services</title>
{.repeated section @}
<hr>
Service {name}
<hr>
<table>
<th align=center>Method</th><th align=center>Calls</th>
{.repeated section meth}
<tr>
<td align=left font=fixed>{name}({m.argType}, {m.replyType}) os.Error</td>
<td align=center>{m.numCalls}</td>
</tr>
{.end}
</table>
{.end}
</body>
</html>`
var debug *template.Template
type debugMethod struct {
m *methodType;
name string;
}
type methodArray []debugMethod
type debugService struct {
s *service;
name string;
meth 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] }
// Runs at /debug/rpc
func debugHTTP(c *http.Conn, req *http.Request) {
var err os.Error;
if debug == nil {
debug, err = template.Parse(debugText, nil);
if err != nil {
fmt.Fprintln(c, "rpc can't create debug HTML template:", err.String());
return;
}
}
// Build a sorted version of the data.
var services = make(serviceArray, len(server.serviceMap));
i := 0;
server.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].meth[j] = debugMethod{method, mname};
j++;
}
sort.Sort(services[i].meth);
i++;
}
server.Unlock();
sort.Sort(services);
err = debug.Execute(services, c);
if err != nil {
fmt.Fprintln(c, "rpc: error executing template:", err.String());
}
}
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