package adapter import ( "context" "fmt" "os" "github.com/containers/libpod/libpod" "github.com/docker/docker/pkg/term" "github.com/pkg/errors" "github.com/sirupsen/logrus" "golang.org/x/crypto/ssh/terminal" "k8s.io/client-go/tools/remotecommand" ) // StartAttachCtr starts and (if required) attaches to a container func StartAttachCtr(ctx context.Context, ctr *libpod.Container, stdout, stderr, stdin *os.File, detachKeys string, sigProxy bool, startContainer bool, recursive bool) error { resize := make(chan remotecommand.TerminalSize) haveTerminal := terminal.IsTerminal(int(os.Stdin.Fd())) // Check if we are attached to a terminal. If we are, generate resize // events, and set the terminal to raw mode if haveTerminal && ctr.Spec().Process.Terminal { logrus.Debugf("Handling terminal attach") subCtx, cancel := context.WithCancel(ctx) defer cancel() resizeTty(subCtx, resize) oldTermState, err := term.SaveState(os.Stdin.Fd()) if err != nil { return errors.Wrapf(err, "unable to save terminal state") } logrus.SetFormatter(&RawTtyFormatter{}) if _, err := term.SetRawTerminal(os.Stdin.Fd()); err != nil { return err } defer func() { if err := restoreTerminal(oldTermState); err != nil { logrus.Errorf("unable to restore terminal: %q", err) } }() } streams := new(libpod.AttachStreams) streams.OutputStream = stdout streams.ErrorStream = stderr streams.InputStream = stdin streams.AttachOutput = true streams.AttachError = true streams.AttachInput = true if stdout == nil { logrus.Debugf("Not attaching to stdout") streams.AttachOutput = false } if stderr == nil { logrus.Debugf("Not attaching to stderr") streams.AttachError = false } if stdin == nil { logrus.Debugf("Not attaching to stdin") streams.AttachInput = false } if !startContainer { if sigProxy { ProxySignals(ctr) } return ctr.Attach(streams, detachKeys, resize) } attachChan, err := ctr.StartAndAttach(ctx, streams, detachKeys, resize, recursive) if err != nil { return err } if sigProxy { ProxySignals(ctr) } if stdout == nil && stderr == nil { fmt.Printf("%s\n", ctr.ID()) } err = <-attachChan if err != nil { return errors.Wrapf(err, "error attaching to container %s", ctr.ID()) } return nil }