/
madux_session.go
123 lines (106 loc) · 2.03 KB
/
madux_session.go
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package madux_session
import (
"bytes"
"fmt"
"io"
"os/exec"
"sync"
"sync/atomic"
"github.com/allmad/madux/madux_term"
"github.com/chzyer/logex"
"github.com/google/shlex"
)
type Session struct {
Name string
Id int32
cmd *exec.Cmd
Pty *madux_term.Pty
output *bytes.Buffer
height int32
width int32
}
func NewSession(cmdStr string) (*Session, error) {
cmdsp, err := shlex.Split(cmdStr)
if err != nil {
return nil, logex.Trace(err)
}
cmd := exec.Command(cmdsp[0], cmdsp[1:]...)
pty, err := madux_term.CopyTerm(cmd)
if err != nil {
return nil, logex.Trace(err)
}
return &Session{
Pty: pty,
cmd: cmd,
output: bytes.NewBuffer(nil),
}, nil
}
func (s *Session) String() string {
return fmt.Sprintf(`{"Id":%d, "name":%q}`,
s.Id, s.Name)
}
func (s *Session) Size(w, h int32) {
s.width = w
s.height = h
s.Pty.SetSize(int(w), int(h))
}
func (s *Session) Start() error {
go io.Copy(s.output, s.Pty)
if err := s.cmd.Start(); err != nil {
return err
}
return nil
}
func (s *Session) Wait() error {
if err := s.cmd.Wait(); err != nil {
return err
}
return nil
}
func (s *Session) GetOutput(start int) ([]byte, int) {
out := s.output.Bytes()
b := out[start:]
return b, start + len(b)
}
// ---------------------------------------------------------------------------
type Sessions struct {
IdSeq int32
list []*Session
m sync.Mutex
}
func (s *Sessions) GetOutput(idx int) []byte {
return s.list[idx].output.Bytes()
}
func (s *Sessions) GetById(id int32) *Session {
for _, item := range s.list {
if item.Id == id {
return item
}
}
return nil
}
func (s *Sessions) List() []*Session {
return s.list
}
func (s *Sessions) Add(sess *Session) {
sess.Id = atomic.AddInt32(&s.IdSeq, 1)
err := sess.Start()
if err != nil {
logex.Error(err)
return
}
go func() {
sess.Wait()
s.m.Lock()
for idx := range s.list {
if s.list[idx] == sess {
s.list = append(s.list[:idx], s.list[idx+1:]...)
break
}
}
s.m.Unlock()
}()
s.m.Lock()
s.list = append(s.list, sess)
s.m.Unlock()
}