func ListenPorts() []int64 {
bs, err := systool.CmdOutBytes("ss", "-n", "-l", "-t")
if err != nil {
log.Error("ss -n -l exec fail: %s", err)
return []int64{}
}
reader := bufio.NewReader(bytes.NewBuffer(bs))
// ignore the first line
var line []byte
line, _, err = reader.ReadLine()
if err == io.EOF || err != nil {
return []int64{}
}
ret := []int64{}
for {
line, _, err = reader.ReadLine()
if err == io.EOF || err != nil {
break
}
arr := strings.Fields(string(line))
arrlen := len(arr)
if arrlen != 4 && arrlen != 5 {
log.Error("output of [ss -n -l -t] format error")
continue
}
ci := 2
if arrlen == 5 {
ci = 3
}
location := strings.LastIndex(arr[ci], ":")
port := arr[ci][location+1:]
if p, e := strconv.ParseInt(port, 10, 64); e != nil {
log.Error("parse port to int64 fail: %s", e)
continue
} else {
ret = append(ret, p)
}
}
ret = slicetool.SliceUniqueInt64(ret)
log.Info("listening ports: %v", ret)
return ret
}
func StartHttp() {
p, err := strconv.Atoi(global.HttpPort)
if err != nil {
logtool.Fetal("port[%s] format error", global.HttpPort)
os.Exit(1)
}
if funcs.PortIsListen(int64(p)) {
logtool.Fetal("port[%d] is in listen", p)
os.Exit(1)
}
m = martini.Classic()
m.Use(render.Renderer(render.Options{
Funcs: []template.FuncMap{{
"nl2br": nl2br,
"htmlquote": htmlQuote,
"str2html": str2html,
"dateformat": dateFormat,
}},
}))
m.Get("/healthz", func() string {
return "ok"
})
m.Get("/", func(re render.Render) {
m := make(map[string]string)
m["version"] = global.Version
re.HTML(200, "index", m)
})
CfgKernelRouter()
CfgSystemRouter()
CfgCpuRouter()
CfgMemRouter()
CfgDfRouter()
CfgNetRouter()
CfgIORouter()
logtool.Info("use http port: %s", global.HttpPort)
http.ListenAndServe(":"+global.HttpPort, m)
}
func CmdRunWithTimeout(cmd *exec.Cmd, timeout time.Duration) (error, bool) {
done := make(chan error)
go func() {
done <- cmd.Wait()
}()
var err error
select {
case <-time.After(timeout):
//timeout
if err = cmd.Process.Kill(); err != nil {
log.Error("failed to kill: %s, error: %s", cmd.Path, err)
}
go func() {
<-done // allow goroutine to exit
}()
log.Info("process:%s killed", cmd.Path)
return err, true
case err = <-done:
return err, false
}
}