/
agent.go
244 lines (207 loc) · 4.33 KB
/
agent.go
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package ssh
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
"log"
"path/filepath"
"strings"
"time"
"github.com/pkg/sftp"
"golang.org/x/crypto/ssh"
"github.com/jyny/outliner/pkg/deployer/ssh/consts"
ol "github.com/jyny/outliner/pkg/outliner"
)
type SecureShell struct {
credentialPub string
credentialPvt string
}
func (s SecureShell) GetCredentialPub() string {
return s.credentialPub
}
func (s SecureShell) sendscript(conn *ssh.Client) error {
client, err := sftp.NewClient(conn)
if err != nil {
return err
}
defer client.Close()
srcFile, err := Script.Open(consts.ScriptName)
if err != nil {
return err
}
defer srcFile.Close()
dstFile, err := client.Create(filepath.Join("/root/", consts.ScriptName))
if err != nil {
return err
}
defer dstFile.Close()
_, err = io.Copy(dstFile, srcFile)
if err != nil {
return err
}
return nil
}
func (s SecureShell) runscript(conn *ssh.Client, cmd string) error {
session, err := conn.NewSession()
if err != nil {
return err
}
defer session.Close()
if err := session.Run(cmd); err != nil {
return err
}
return nil
}
func (s SecureShell) sshconfig() (*ssh.ClientConfig, error) {
signer, err := ssh.ParsePrivateKey([]byte(s.credentialPvt))
if err != nil {
return &ssh.ClientConfig{}, err
}
return &ssh.ClientConfig{
User: "root",
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}, nil
}
func (s SecureShell) sshconn(ip string) (*ssh.Client, error) {
config, err := s.sshconfig()
if err != nil {
return &ssh.Client{}, err
}
return ssh.Dial("tcp", ip+":22", config)
}
func (s SecureShell) Deploy(ip string) error {
conn, err := s.sshconn(ip)
if err != nil {
return err
}
// sendscript
err = s.sendscript(conn)
if err != nil {
return err
}
log.Println("[Deploy script uploaded]")
// runscript
cmd := "chmod +x " + consts.ScriptName
log.Println("[Deploy init]", cmd)
err = s.runscript(conn, cmd)
if err != nil {
return err
}
cmd = "nohup bash "
cmd += filepath.Join("/root/", consts.ScriptName)
cmd += " &> /tmp/out &"
log.Println("[Deploy init]", cmd)
err = s.runscript(conn, cmd)
if err != nil {
return err
}
return nil
}
func (s SecureShell) Watch(ip string) error {
conn, err := s.sshconn(ip)
if err != nil {
return err
}
session, err := conn.NewSession()
if err != nil {
return err
}
defer session.Close()
stdin, err := session.StdinPipe()
if err != nil {
return err
}
stdout, err := session.StdoutPipe()
if err != nil {
return err
}
if err := session.Shell(); err != nil {
return err
}
// watch deploy stdout
cmd := "tail -f /tmp/out"
_, err = fmt.Fprintf(stdin, "%s\n", cmd)
if err != nil {
log.Fatal(err)
}
line := make(chan string)
go func(stdout io.Reader) {
reader := bufio.NewReader(stdout)
for {
linebyte, condition, err := reader.ReadLine()
if err != nil {
log.Println(err)
}
newline := string(linebyte)
for condition {
linebyte, condition, err = reader.ReadLine()
if err != nil {
log.Println(err)
}
newline += string(linebyte)
}
line <- newline
}
}(stdout)
// wait deploy done
done := make(chan bool)
go func(ip string) {
conn, err := s.sshconn(ip)
if err != nil {
log.Println(err)
}
session, err := conn.NewSession()
if err != nil {
log.Println(err)
}
defer session.Close()
cmd := "while kill -0 \"$(cat /tmp/pid)\" &> /dev/null; do sleep 1; done;"
if err := session.Run(cmd); err != nil {
log.Println(err)
}
done <- true
}(ip)
for {
select {
case out := <-line:
log.Println("[Deploy running]", out)
case <-time.After(1 * time.Minute):
return errors.New("Watch Deploy Timeout")
case <-done:
return nil
}
}
}
func (s SecureShell) GetServiceCert(ip string) (ol.APICert, error) {
conn, err := s.sshconn(ip)
if err != nil {
return ol.APICert{}, err
}
session, err := conn.NewSession()
if err != nil {
return ol.APICert{}, err
}
defer session.Close()
var b bytes.Buffer
session.Stdout = &b
cmd := "cat /opt/outline/access.txt"
if err := session.Run(cmd); err != nil {
log.Println(err)
}
var ret ol.APICert
for _, e := range strings.Split(b.String(), "\n") {
f := strings.Split(e, ":")
if f[0] == "certSha256" {
ret.CertSha256 = f[1]
}
if f[0] == "apiUrl" {
ret.APIurl = f[1] + ":" + f[2] + ":" + f[3]
}
}
return ret, nil
}