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Correctly handle missing layer upload

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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 887b940ec1
commit 594263a3f5
1 changed files with 14 additions and 4 deletions
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18
docs/layerupload.go
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@ -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 {