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ssh.go
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ssh.go
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// MIT License
// Copyright (c) 2020 ysicing <i@ysicing.me>
package ssh
import (
"bufio"
"fmt"
"io"
"os"
"sync"
"github.com/ysicing/ext/utils/exmisc"
"github.com/ysicing/ext/logger"
)
func (ss *SSH) Run(host string, cmd string) {
session, err := ss.Connect(host)
defer func() {
if r := recover(); r != nil {
logger.Slog.Errorf("%v create ssh session failed, %v", host, err)
}
}()
if err != nil {
panic(err)
}
defer session.Close()
session.Stdout = os.Stdout
session.Stderr = os.Stderr
if err := session.Run(cmd); err != nil {
logger.Slog.Errorf("%v exec cmd(%v) failed, %v", host, cmd, err)
os.Exit(0)
}
}
func readPipe(host string, pipe io.Reader, isErr bool, rundebug ...bool) {
r := bufio.NewReader(pipe)
for {
line, _, err := r.ReadLine()
if line == nil {
return
} else if err != nil {
logger.Slog.Infof("[%s] %s", exmisc.SGreen(host), line)
logger.Slog.Errorf("[ssh] [%s] %s", exmisc.SRed(host), err)
return
} else {
if isErr {
if len(rundebug) > 0 && rundebug[0] {
logger.Slog.Errorf("[%s] %s", exmisc.SRed(host), line)
} else {
msg, _ := fmt.Printf("%s", line)
fmt.Println(msg)
}
} else {
if len(rundebug) > 0 && rundebug[0] {
logger.Slog.Infof("[%s] %s", exmisc.SGreen(host), line)
} else {
msg, _ := fmt.Printf("%s", line)
fmt.Println(msg)
}
}
}
}
}
func (ss *SSH) CmdAsync(host string, cmd string, wg *sync.WaitGroup, rundebug ...bool) error {
defer wg.Done()
fmt.Printf("[ssh][%s] ➜ %s\n", exmisc.SGreen(host), cmd)
session, err := ss.Connect(host)
if err != nil {
logger.Slog.Errorf("[ssh][%s]Error create ssh session failed,%s", host, err)
return err
}
defer session.Close()
stdout, err := session.StdoutPipe()
if err != nil {
logger.Slog.Errorf("[ssh][%s]Unable to request StdoutPipe(): %s", host, err)
return err
}
stderr, err := session.StderrPipe()
if err != nil {
logger.Slog.Errorf("[ssh][%s]Unable to request StderrPipe(): %s", host, err)
return err
}
if err := session.Start(cmd); err != nil {
logger.Slog.Errorf("[ssh][%s]Unable to execute command: %s", host, err)
return err
}
doneout := make(chan bool, 1)
doneerr := make(chan bool, 1)
go func() {
readPipe(host, stderr, true, rundebug...)
doneerr <- true
}()
go func() {
readPipe(host, stdout, false, rundebug...)
doneout <- true
}()
<-doneerr
<-doneout
return session.Wait()
}