* [pbs-devel] [PATCH proxmox v2] proxmox-schema: add convenience macros for ParameterError
@ 2022-03-03 14:23 Dominik Csapak
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From: Dominik Csapak @ 2022-03-03 14:23 UTC (permalink / raw)
To: pbs-devel
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
changes from v1:
* format_param_err -> param_format_err
* drop use in this file to avoid format_err of an anyhow error
proxmox-schema/src/schema.rs | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/proxmox-schema/src/schema.rs b/proxmox-schema/src/schema.rs
index 0f90682..ba7b30c 100644
--- a/proxmox-schema/src/schema.rs
+++ b/proxmox-schema/src/schema.rs
@@ -21,6 +21,24 @@ pub struct ParameterError {
error_list: Vec<(String, Error)>,
}
+/// Like anyhow's `format_err` but producing a `ParameterError`.
+#[macro_export]
+macro_rules! param_format_err {
+ ($field:expr, $($msg:tt)+) => {
+ $crate::ParameterError::from(($field, format_err!($($msg)+)))
+ };
+}
+
+/// Like anyhow's `bail` but enclosing a `ParameterError`, so
+/// a `downcast` can extract it later. This is useful for
+/// API calls that need to do parameter checking manually.
+#[macro_export]
+macro_rules! param_bail {
+ ($field:expr, $($msg:tt)+) => {{
+ return Err($crate::param_format_err!($field, $($msg)+).into());
+ }};
+}
+
impl std::error::Error for ParameterError {}
impl ParameterError {
--
2.30.2
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