wip: oci image management

internal/rerr/error.go

@@ -0,0 +1,102 @@
+package rerr
+
+import (
+	"net/http"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+// RepositoryError represents an error in the registry
+type RepositoryError struct {
+	Status  int    `json:"status"`
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
+func (e *RepositoryError) Error() string {
+	return e.Message
+}
+
+// Error responses
+var (
+	ErrBlobUnknown = &RepositoryError{
+		Status:  http.StatusNotFound,
+		Code:    "BLOB_UNKNOWN",
+		Message: "blob unknown to registry",
+	}
+
+	ErrDigestInvalid = &RepositoryError{
+		Status:  http.StatusBadRequest,
+		Code:    "DIGEST_INVALID",
+		Message: "provided digest did not match uploaded content",
+	}
+
+	ErrDigestMismatch = &RepositoryError{
+		Status:  http.StatusBadRequest,
+		Code:    "DIGEST_MISMATCH",
+		Message: "provided digest did not match uploaded content",
+	}
+
+	ErrManifestUnknown = &RepositoryError{
+		Status:  http.StatusNotFound,
+		Code:    "MANIFEST_UNKNOWN",
+		Message: "manifest unknown",
+	}
+
+	ErrManifestInvalid = &RepositoryError{
+		Status:  http.StatusBadRequest,
+		Code:    "MANIFEST_INVALID",
+		Message: "manifest invalid",
+	}
+
+	ErrNameUnknown = &RepositoryError{
+		Status:  http.StatusNotFound,
+		Code:    "NAME_UNKNOWN",
+		Message: "repository name not known to registry",
+	}
+
+	ErrUnauthorized = &RepositoryError{
+		Status:  http.StatusUnauthorized,
+		Code:    "UNAUTHORIZED",
+		Message: "authentication required",
+	}
+
+	ErrDenied = &RepositoryError{
+		Status:  http.StatusForbidden,
+		Code:    "DENIED",
+		Message: "requested access to the resource is denied",
+	}
+
+	ErrUnsupported = &RepositoryError{
+		Status:  http.StatusMethodNotAllowed,
+		Code:    "UNSUPPORTED",
+		Message: "The operation is unsupported",
+	}
+
+	ErrTooManyRequests = &RepositoryError{
+		Status:  http.StatusTooManyRequests,
+		Code:    "TOOMANYREQUESTS",
+		Message: "too many requests",
+	}
+)
+
+// ErrInternal creates an internal server error
+func ErrInternal(err error) *RepositoryError {
+	return &RepositoryError{
+		Status:  http.StatusInternalServerError,
+		Code:    "INTERNAL_SERVER_ERROR",
+		Message: err.Error(),
+	}
+}
+
+// Error sends a repository error response
+func Error(c fiber.Ctx, err *RepositoryError) error {
+	return c.Status(err.Status).JSON(fiber.Map{
+		"errors": []fiber.Map{
+			{
+				"code":    err.Code,
+				"message": err.Message,
+			},
+		},
+	})
+}