Correctly handle missing layer upload

Because we guarded the error check, nil Upload on the handler was getting
through to unexpected branches. This directly handles the missing upload
ensuring its set as expected.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-01-09 16:09:45 -08:00
parent 21a69f53b5
commit c78335a023

View file

@ -53,11 +53,18 @@ func layerUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
layers := ctx.services.Layers() layers := ctx.services.Layers()
upload, err := layers.Resume(luh.Name, luh.UUID) upload, err := layers.Resume(luh.Name, luh.UUID)
if err != nil && err != storage.ErrLayerUploadUnknown { if err != nil {
ctx.log.Errorf("error resolving upload: %v", err)
if err == storage.ErrLayerUploadUnknown {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotFound)
luh.Errors.Push(v2.ErrorCodeBlobUploadUnknown, err)
})
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx.log.Errorf("error resolving upload: %v", err) w.WriteHeader(http.StatusInternalServerError)
w.WriteHeader(http.StatusBadRequest) luh.Errors.Push(v2.ErrorCodeUnknown, err)
luh.Errors.Push(v2.ErrorCodeBlobUploadUnknown, err)
}) })
} }
luh.Upload = upload luh.Upload = upload
@ -68,6 +75,7 @@ func layerUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
// problems. We basically cancel the upload and tell the client to // problems. We basically cancel the upload and tell the client to
// start over. // start over.
if nn, err := upload.Seek(luh.State.Offset, os.SEEK_SET); err != nil { if nn, err := upload.Seek(luh.State.Offset, os.SEEK_SET); err != nil {
defer upload.Close()
ctx.log.Infof("error seeking layer upload: %v", err) ctx.log.Infof("error seeking layer upload: %v", err)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusBadRequest) w.WriteHeader(http.StatusBadRequest)
@ -75,6 +83,7 @@ func layerUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
upload.Cancel() upload.Cancel()
}) })
} else if nn != luh.State.Offset { } else if nn != luh.State.Offset {
defer upload.Close()
ctx.log.Infof("seek to wrong offest: %d != %d", nn, luh.State.Offset) ctx.log.Infof("seek to wrong offest: %d != %d", nn, luh.State.Offset)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusBadRequest) w.WriteHeader(http.StatusBadRequest)
@ -129,6 +138,7 @@ func (luh *layerUploadHandler) GetUploadStatus(w http.ResponseWriter, r *http.Re
if luh.Upload == nil { if luh.Upload == nil {
w.WriteHeader(http.StatusNotFound) w.WriteHeader(http.StatusNotFound)
luh.Errors.Push(v2.ErrorCodeBlobUploadUnknown) luh.Errors.Push(v2.ErrorCodeBlobUploadUnknown)
return
} }
if err := luh.layerUploadResponse(w, r); err != nil { if err := luh.layerUploadResponse(w, r); err != nil {