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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>
pull/56/head
Stephen J Day 2015-01-09 16:09:45 -08:00
parent 21a69f53b5
commit c78335a023
1 changed files with 14 additions and 4 deletions
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18
registry/layerupload.go
View File

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