func SerialRun(config map[string]interface{}, raw_host_arr []string, start, end int) error {
host_arr := raw_host_arr[start:end]
user, _ := config["User"].(string)
pwd, _ := config["Password"].(string)
keyfile, _ := config["Keyfile"].(string)
cmd, _ := config["Cmd"].(string)
args, _ := config["Args"].(string)
timeout, _ := config["Timeout"].(int)
// Format command
cmd = format_cmd(cmd, args)
printer, _ := config["Output"].(io.Writer)
err_printer, _ := config["Errout"].(io.Writer)
mgr, _ := job.NewManager()
for index, h := range host_arr {
s3h := sssh.NewS3h(h, user, pwd, keyfile, cmd, printer, err_printer, mgr)
s3h.Timeout = timeout
go func() {
if _, err := mgr.Receive(-1); err == nil {
report(err_printer, fmt.Sprintf("%d/%d ", index+1+start, len(raw_host_arr)), s3h.Host, true)
mgr.Send(s3h.Host, map[string]interface{}{"FROM": job.MASTER_ID, "BODY": "CONTINUE"})
} else {
mgr.Send(s3h.Host, map[string]interface{}{"FROM": job.MASTER_ID, "BODY": "STOP"})
}
}()
s3h.Work()
}
return nil
}
func Interact(config map[string]interface{}, host string) {
user, _ := config["User"].(string)
pwd, _ := config["Password"].(string)
keyfile, _ := config["Keyfile"].(string)
cmd, _ := config["Cmd"].(string)
printer, _ := config["Output"].(io.Writer)
err_printer, _ := config["Errout"].(io.Writer)
mgr, _ := job.NewManager()
s3h := sssh.NewS3h(host, user, pwd, keyfile, cmd, printer, err_printer, mgr)
s3h.SysLogin()
}
func ParallelRun(config map[string]interface{}, raw_host_arr []string, start, end int, tmpdir string) error {
host_arr := raw_host_arr[start:end]
user, _ := config["User"].(string)
pwd, _ := config["Password"].(string)
keyfile, _ := config["Keyfile"].(string)
cmd, _ := config["Cmd"].(string)
args, _ := config["Args"].(string)
timeout, _ := config["Timeout"].(int)
cmd = format_cmd(cmd, args)
printer, _ := config["Output"].(io.Writer)
err_printer, _ := config["Errout"].(io.Writer)
// Create master, the master is used to manage go routines
mgr, _ := job.NewManager()
// Setup tmp directory for tmp files
dir := fmt.Sprintf("%s/.s3h.%d", tmpdir, time.Now().Nanosecond())
if err := os.Mkdir(dir, os.ModeDir|os.ModePerm); err != nil {
return err
}
// Listen interrupt and kill signal, clear tmp files before exit.
intqueue := make(chan os.Signal, 1)
signal.Notify(intqueue, os.Interrupt, os.Kill)
// If got interrupt or kill signal, delete tmp directory first, then exit with 1
go func() {
<-intqueue
os.RemoveAll(dir)
os.Exit(1)
}()
// If the complete all the tasks normlly, stop listenning signals and remove tmp directory
defer func() {
signal.Stop(intqueue)
os.RemoveAll(dir)
}()
// Create tmp file for every host, then executes.
var tmpfiles []*os.File
for _, h := range host_arr {
file, _ := os.Create(fmt.Sprintf("%s/%s", dir, h))
err_file, _ := os.Create(fmt.Sprintf("%s/%s.err", dir, h))
tmpfiles = append(tmpfiles, file, err_file)
s3h := sssh.NewS3h(h, user, pwd, keyfile, cmd, file, err_file, mgr)
s3h.Timeout = timeout
go s3h.Work()
}
// show realtime view for each host
var dc *dircat.DirCat
if terminal.IsTerminal(1) {
wlist := []string{}
for _, h := range host_arr {
wlist = append(wlist, fmt.Sprintf("%s/%s", dir, h))
}
dc, _ = dircat.Init(wlist...)
go dc.Start()
}
// When a host is ready and request for continue, the master would echo CONTINUE for response to allow host to run
size := len(host_arr)
for {
data, _ := mgr.Receive(-1)
info, _ := data.(map[string]interface{})
if info["BODY"].(string) == "BEGIN" {
mgr.Send(info["FROM"].(string), map[string]interface{}{"FROM": job.MASTER_ID, "BODY": "CONTINUE"})
} else if info["BODY"].(string) == "END" {
// If master gets every hosts' END message, then it stop waiting.
size -= 1
if size == 0 {
break
}
}
}
if terminal.IsTerminal(1) {
dc.Stop()
}
// close tmp files
for _, f := range tmpfiles {
f.Close()
}
// Merge all the hosts' output to the output file
for _, h := range host_arr {
report(os.Stderr, "", h, true)
// copy err output first
err_fn := fmt.Sprintf("%s/%s.err", dir, h)
err_src, _ := os.Open(err_fn)
io.Copy(err_printer, err_src)
err_src.Close()
// copy output then
fn := fmt.Sprintf("%s/%s", dir, h)
src, _ := os.Open(fn)
io.Copy(printer, src)
src.Close()
// remove tmp file
os.Remove(err_fn)
os.Remove(fn)
}
return nil
}