1 files changed, 52 insertions, 0 deletions
diff --git a/routers/api/packages/container/errors.go b/routers/api/packages/container/errors.go
new file mode 100644
index 0000000..1a9b0f3
--- /dev/null
+++ b/routers/api/packages/container/errors.go
@@ -0,0 +1,52 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package container
+
+import (
+	"net/http"
+)
+
+// https://github.com/opencontainers/distribution-spec/blob/main/spec.md#error-codes
+var (
+	errBlobUnknown         = &namedError{Code: "BLOB_UNKNOWN", StatusCode: http.StatusNotFound}
+	errBlobUploadInvalid   = &namedError{Code: "BLOB_UPLOAD_INVALID", StatusCode: http.StatusBadRequest}
+	errBlobUploadUnknown   = &namedError{Code: "BLOB_UPLOAD_UNKNOWN", StatusCode: http.StatusNotFound}
+	errDigestInvalid       = &namedError{Code: "DIGEST_INVALID", StatusCode: http.StatusBadRequest}
+	errManifestBlobUnknown = &namedError{Code: "MANIFEST_BLOB_UNKNOWN", StatusCode: http.StatusNotFound}
+	errManifestInvalid     = &namedError{Code: "MANIFEST_INVALID", StatusCode: http.StatusBadRequest}
+	errManifestUnknown     = &namedError{Code: "MANIFEST_UNKNOWN", StatusCode: http.StatusNotFound}
+	errNameInvalid         = &namedError{Code: "NAME_INVALID", StatusCode: http.StatusBadRequest}
+	errNameUnknown         = &namedError{Code: "NAME_UNKNOWN", StatusCode: http.StatusNotFound}
+	errSizeInvalid         = &namedError{Code: "SIZE_INVALID", StatusCode: http.StatusBadRequest}
+	errUnauthorized        = &namedError{Code: "UNAUTHORIZED", StatusCode: http.StatusUnauthorized}
+	errUnsupported         = &namedError{Code: "UNSUPPORTED", StatusCode: http.StatusNotImplemented}
+)
+
+type namedError struct {
+	Code       string
+	StatusCode int
+	Message    string
+}
+
+func (e *namedError) Error() string {
+	return e.Message
+}
+
+// WithMessage creates a new instance of the error with a different message
+func (e *namedError) WithMessage(message string) *namedError {
+	return &namedError{
+		Code:       e.Code,
+		StatusCode: e.StatusCode,
+		Message:    message,
+	}
+}
+
+// WithStatusCode creates a new instance of the error with a different status code
+func (e *namedError) WithStatusCode(statusCode int) *namedError {
+	return &namedError{
+		Code:       e.Code,
+		StatusCode: statusCode,
+		Message:    e.Message,
+	}
+}