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debug.go
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debug.go
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package debug
import (
"bufio"
"cham/cham"
"cham/service/log"
"fmt"
"net"
"reflect"
"strconv"
"strings"
)
type buffer struct {
conn net.Conn
}
func (s buffer) WriteString(str string) {
s.conn.Write([]byte(str))
}
type debug struct {
addr string
funcs map[string]reflect.Value
}
func (d *debug) serve(conn net.Conn) {
defer conn.Close()
buf := buffer{conn}
br := bufio.NewReader(conn)
buf.WriteString("Welcome to cham console\r\n")
for {
line, _, err := br.ReadLine()
if err != nil {
return
}
if len(line) < 1 {
continue
}
cmds := strings.Fields(string(line))
result := d.handle(cmds)
buf.WriteString(result)
buf.WriteString("\r\n")
}
}
func (d *debug) handle(cmds []string) string {
defer func() {
if err := recover(); err != nil {
log.Infoln("debug cmd", cmds, " error:", err)
}
}()
funName := strings.Title(cmds[0])
if f, ok := d.funcs[funName]; !ok {
return "Invalid command, type help for command list"
} else {
var in []reflect.Value
n := len(cmds) - 1
if n > 0 {
args := cmds[1:]
in = make([]reflect.Value, n)
for i := 0; i < n; i++ {
in[i] = reflect.ValueOf(args[i])
}
} else {
in = []reflect.Value{}
}
result := f.Call(in)
return result[0].String()
}
}
func (d *debug) getfuncs() {
v := reflect.ValueOf(d)
t := v.Type()
for i := 0; i < t.NumMethod(); i++ {
name := t.Method(i).Name
if strings.HasPrefix(name, "Cmd") {
d.funcs[name[3:]] = v.Method(i)
}
}
}
func (d *debug) start() {
listener, err := net.Listen("tcp", d.addr)
if err != nil {
panic("debug listen addr:" + d.addr + " ,error:" + err.Error())
}
log.Infoln("debug start, listen ", d.addr)
defer listener.Close()
d.getfuncs()
for {
conn, err := listener.Accept()
if err != nil {
continue
}
go d.serve(conn)
}
}
func (d *debug) CmdList() string {
return cham.DumpService()
}
func (d *debug) CmdHelp() string {
return `
<-------------------->
help help message
list list all service
send send message to service(send addr message)
<-------------------->
`
}
func (d *debug) CmdSend(args ...string) string {
if len(args) < 2 {
return "FAILED, args not enough"
}
vv := make([]interface{}, len(args)-1)
addr, err := strconv.Atoi(args[0])
if err != nil {
return "FAILED, addr error"
}
pt, err := strconv.Atoi(args[1])
if err != nil {
return "FAILED, ptype error"
}
vv[0] = uint8(pt)
for i := 1; i < len(vv); i++ {
vv[i] = args[i+2]
}
msg := cham.Main.Send(cham.Address(addr), cham.PTYPE_GO, vv...)
return "SUCCESS," + fmt.Sprint(msg)
}
func Start(service *cham.Service, args ...interface{}) cham.Dispatch {
d := &debug{args[0].(string), make(map[string]reflect.Value)}
go d.start()
return func(session int32, source cham.Address, ptype uint8, args ...interface{}) []interface{} {
return cham.NORET
}
}