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pkg/registry: Export errNotFound #1940

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pkg/registry: Export errNotFound #1940

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24 changes: 12 additions & 12 deletions pkg/registry/blobs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -51,14 +51,14 @@ func isBlob(req *http.Request) bool {
// BlobHandler represents a minimal blob storage backend, capable of serving
// blob contents.
type BlobHandler interface {
// Get gets the blob contents, or errNotFound if the blob wasn't found.
// Get gets the blob contents, or ErrNotFound if the blob wasn't found.
Get(ctx context.Context, repo string, h v1.Hash) (io.ReadCloser, error)
}

// BlobStatHandler is an extension interface representing a blob storage
// backend that can serve metadata about blobs.
type BlobStatHandler interface {
// Stat returns the size of the blob, or errNotFound if the blob wasn't
// Stat returns the size of the blob, or ErrNotFound if the blob wasn't
// found, or redirectError if the blob can be found elsewhere.
Stat(ctx context.Context, repo string, h v1.Hash) (int64, error)
}
Expand Down Expand Up @@ -103,8 +103,8 @@ func (r *bytesCloser) Close() error {

func (e redirectError) Error() string { return fmt.Sprintf("redirecting (%d): %s", e.Code, e.Location) }

// errNotFound represents an error locating the blob.
var errNotFound = errors.New("not found")
// ErrNotFound represents an error locating the blob.
var ErrNotFound = errors.New("not found")

type memHandler struct {
m map[string][]byte
Expand All @@ -119,7 +119,7 @@ func (m *memHandler) Stat(_ context.Context, _ string, h v1.Hash) (int64, error)

b, found := m.m[h.String()]
if !found {
return 0, errNotFound
return 0, ErrNotFound
}
return int64(len(b)), nil
}
Expand All @@ -130,7 +130,7 @@ func (m *memHandler) Get(_ context.Context, _ string, h v1.Hash) (io.ReadCloser,

b, found := m.m[h.String()]
if !found {
return nil, errNotFound
return nil, ErrNotFound
}
return &bytesCloser{bytes.NewReader(b)}, nil
}
Expand All @@ -153,7 +153,7 @@ func (m *memHandler) Delete(_ context.Context, _ string, h v1.Hash) error {
defer m.lock.Unlock()

if _, found := m.m[h.String()]; !found {
return errNotFound
return ErrNotFound
}

delete(m.m, h.String())
Expand Down Expand Up @@ -206,7 +206,7 @@ func (b *blobs) handle(resp http.ResponseWriter, req *http.Request) *regError {
var size int64
if bsh, ok := b.blobHandler.(BlobStatHandler); ok {
size, err = bsh.Stat(req.Context(), repo, h)
if errors.Is(err, errNotFound) {
if errors.Is(err, ErrNotFound) {
return regErrBlobUnknown
} else if err != nil {
var rerr redirectError
Expand All @@ -218,7 +218,7 @@ func (b *blobs) handle(resp http.ResponseWriter, req *http.Request) *regError {
}
} else {
rc, err := b.blobHandler.Get(req.Context(), repo, h)
if errors.Is(err, errNotFound) {
if errors.Is(err, ErrNotFound) {
return regErrBlobUnknown
} else if err != nil {
var rerr redirectError
Expand Down Expand Up @@ -254,7 +254,7 @@ func (b *blobs) handle(resp http.ResponseWriter, req *http.Request) *regError {
var r io.Reader
if bsh, ok := b.blobHandler.(BlobStatHandler); ok {
size, err = bsh.Stat(req.Context(), repo, h)
if errors.Is(err, errNotFound) {
if errors.Is(err, ErrNotFound) {
return regErrBlobUnknown
} else if err != nil {
var rerr redirectError
Expand All @@ -266,7 +266,7 @@ func (b *blobs) handle(resp http.ResponseWriter, req *http.Request) *regError {
}

rc, err := b.blobHandler.Get(req.Context(), repo, h)
if errors.Is(err, errNotFound) {
if errors.Is(err, ErrNotFound) {
return regErrBlobUnknown
} else if err != nil {
var rerr redirectError
Expand All @@ -283,7 +283,7 @@ func (b *blobs) handle(resp http.ResponseWriter, req *http.Request) *regError {

} else {
tmp, err := b.blobHandler.Get(req.Context(), repo, h)
if errors.Is(err, errNotFound) {
if errors.Is(err, ErrNotFound) {
return regErrBlobUnknown
} else if err != nil {
var rerr redirectError
Expand Down
2 changes: 1 addition & 1 deletion pkg/registry/blobs_disk.go
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ func (m *diskHandler) blobHashPath(h v1.Hash) string {
func (m *diskHandler) Stat(_ context.Context, _ string, h v1.Hash) (int64, error) {
fi, err := os.Stat(m.blobHashPath(h))
if errors.Is(err, os.ErrNotExist) {
return 0, errNotFound
return 0, ErrNotFound
} else if err != nil {
return 0, err
}
Expand Down
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