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-rw-r--r--pkg/api/handlers/compat/resize.go15
-rw-r--r--pkg/api/server/register_containers.go2
-rw-r--r--pkg/bindings/containers/attach.go54
3 files changed, 36 insertions, 35 deletions
diff --git a/pkg/api/handlers/compat/resize.go b/pkg/api/handlers/compat/resize.go
index 23ed33a22..f65e313fc 100644
--- a/pkg/api/handlers/compat/resize.go
+++ b/pkg/api/handlers/compat/resize.go
@@ -46,20 +46,13 @@ func ResizeTTY(w http.ResponseWriter, r *http.Request) {
utils.ContainerNotFound(w, name, err)
return
}
- if state, err := ctnr.State(); err != nil {
- utils.InternalServerError(w, errors.Wrapf(err, "cannot obtain container state"))
- return
- } else if state != define.ContainerStateRunning && !query.IgnoreNotRunning {
- utils.Error(w, "Container not running", http.StatusConflict,
- fmt.Errorf("container %q in wrong state %q", name, state.String()))
- return
- }
- // If container is not running, ignore since this can be a race condition, and is expected
if err := ctnr.AttachResize(sz); err != nil {
- if errors.Cause(err) != define.ErrCtrStateInvalid || !query.IgnoreNotRunning {
+ if errors.Cause(err) != define.ErrCtrStateInvalid {
utils.InternalServerError(w, errors.Wrapf(err, "cannot resize container"))
- return
+ } else {
+ utils.Error(w, "Container not running", http.StatusConflict, err)
}
+ return
}
// This is not a 204, even though we write nothing, for compatibility
// reasons.
diff --git a/pkg/api/server/register_containers.go b/pkg/api/server/register_containers.go
index aa999905e..88ebb4df5 100644
--- a/pkg/api/server/register_containers.go
+++ b/pkg/api/server/register_containers.go
@@ -1364,6 +1364,8 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// $ref: "#/responses/ok"
// 404:
// $ref: "#/responses/NoSuchContainer"
+ // 409:
+ // $ref: "#/responses/ConflictError"
// 500:
// $ref: "#/responses/InternalError"
r.HandleFunc(VersionedPath("/libpod/containers/{name}/resize"), s.APIHandler(compat.ResizeTTY)).Methods(http.MethodPost)
diff --git a/pkg/bindings/containers/attach.go b/pkg/bindings/containers/attach.go
index fd8a7011d..adef1e7c8 100644
--- a/pkg/bindings/containers/attach.go
+++ b/pkg/bindings/containers/attach.go
@@ -138,7 +138,7 @@ func Attach(ctx context.Context, nameOrID string, stdin io.Reader, stdout io.Wri
winCtx, winCancel := context.WithCancel(ctx)
defer winCancel()
- go attachHandleResize(ctx, winCtx, winChange, false, nameOrID, file)
+ attachHandleResize(ctx, winCtx, winChange, false, nameOrID, file)
}
// If we are attaching around a start, we need to "signal"
@@ -327,32 +327,38 @@ func (f *rawFormatter) Format(entry *logrus.Entry) ([]byte, error) {
return append(buffer, '\r'), nil
}
-// This is intended to be run as a goroutine, handling resizing for a container
-// or exec session.
+// This is intended to not be run as a goroutine, handling resizing for a container
+// or exec session. It will call resize once and then starts a goroutine which calls resize on winChange
func attachHandleResize(ctx, winCtx context.Context, winChange chan os.Signal, isExec bool, id string, file *os.File) {
- // Prime the pump, we need one reset to ensure everything is ready
- winChange <- sig.SIGWINCH
- for {
- select {
- case <-winCtx.Done():
- return
- case <-winChange:
- w, h, err := terminal.GetSize(int(file.Fd()))
- if err != nil {
- logrus.Warnf("failed to obtain TTY size: %v", err)
- }
+ resize := func() {
+ w, h, err := terminal.GetSize(int(file.Fd()))
+ if err != nil {
+ logrus.Warnf("failed to obtain TTY size: %v", err)
+ }
- var resizeErr error
- if isExec {
- resizeErr = ResizeExecTTY(ctx, id, new(ResizeExecTTYOptions).WithHeight(h).WithWidth(w))
- } else {
- resizeErr = ResizeContainerTTY(ctx, id, new(ResizeTTYOptions).WithHeight(h).WithWidth(w))
- }
- if resizeErr != nil {
- logrus.Warnf("failed to resize TTY: %v", resizeErr)
- }
+ var resizeErr error
+ if isExec {
+ resizeErr = ResizeExecTTY(ctx, id, new(ResizeExecTTYOptions).WithHeight(h).WithWidth(w))
+ } else {
+ resizeErr = ResizeContainerTTY(ctx, id, new(ResizeTTYOptions).WithHeight(h).WithWidth(w))
+ }
+ if resizeErr != nil {
+ logrus.Warnf("failed to resize TTY: %v", resizeErr)
}
}
+
+ resize()
+
+ go func() {
+ for {
+ select {
+ case <-winCtx.Done():
+ return
+ case <-winChange:
+ resize()
+ }
+ }
+ }()
}
// Configure the given terminal for raw mode
@@ -457,7 +463,7 @@ func ExecStartAndAttach(ctx context.Context, sessionID string, options *ExecStar
winCtx, winCancel := context.WithCancel(ctx)
defer winCancel()
- go attachHandleResize(ctx, winCtx, winChange, true, sessionID, terminalFile)
+ attachHandleResize(ctx, winCtx, winChange, true, sessionID, terminalFile)
}
if options.GetAttachInput() {