func (s *sessionManager) waitForShell(shell engines.Shell) {
// Wait for shell to finish
shell.Wait()
// Lock access to s.shells
s.m.Lock()
defer s.m.Unlock()
// Remove shell from s.shells
shells := s.shells[:0]
for _, sh := range s.shells {
if sh != shell {
shells = append(shells, sh)
}
}
s.shells = shells
// Notify threads waiting if all shells are done
if len(s.shells) == 0 && len(s.displays) == 0 {
s.empty.Broadcast()
}
}
func (s *ShellServer) handleShell(ws *websocket.Conn, shell engines.Shell) {
done := make(chan struct{})
// Create a shell handler
s.updateRefCount(1)
handler := NewShellHandler(ws, s.log.WithField("shell-instance-id", s.nextID()))
// Connect pipes
go ioext.CopyAndClose(shell.StdinPipe(), handler.StdinPipe())
go ioext.CopyAndClose(handler.StdoutPipe(), shell.StdoutPipe())
go ioext.CopyAndClose(handler.StderrPipe(), shell.StderrPipe())
// Start streaming
handler.Communicate(shell.SetSize, shell.Abort)
// Wait for call to abort all shells
go func() {
select {
case <-s.done:
shell.Abort()
case <-done:
}
}()
// Wait for the shell to terminate
success, _ := shell.Wait()
handler.Terminated(success)
s.updateRefCount(-1)
// Close done so we stop waiting for abort on all shells
select {
case <-done:
default:
close(done)
}
}