Register remote errors for clients to access registry errors

dmcgowan · k8s-infra-cherrypick-robot · commit f6d926314015 · 2025-06-12T14:42:06.000Z
Currently the error is not encoded and only the error message can be
retrieved on the client. With this change, clients can access the
unexpected error type even over grpc.

Signed-off-by: Derek McGowan &lt;derek@mcg.dev&gt;
diff --git a/core/remotes/errors/errors.go b/core/remotes/errors/errors.go
@@ -20,16 +20,23 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+
+	"github.com/containerd/typeurl/v2"
 )
 
 var _ error = ErrUnexpectedStatus{}
 
+func init() {
+	typeurl.Register(&ErrUnexpectedStatus{}, "github.com/containerd/containerd/v2/core/remotes/errors", "ErrUnexpectedStatus")
+}
+
 // ErrUnexpectedStatus is returned if a registry API request returned with unexpected HTTP status
 type ErrUnexpectedStatus struct {
-	Status                    string
-	StatusCode                int
-	Body                      []byte
-	RequestURL, RequestMethod string
+	Status        string `json:"status"`
+	StatusCode    int    `json:"statusCode"`
+	Body          []byte `json:"body,omitempty"`
+	RequestURL    string `json:"requestURL,omitempty"`
+	RequestMethod string `json:"requestMethod,omitempty"`
 }
 
 func (e ErrUnexpectedStatus) Error() string {
