[pve-devel] [PATCH proxmox 1/2] notify: api: allow resetting built-in targets when they are referenced
Wolfgang Bumiller
w.bumiller at proxmox.com
Tue Jan 9 14:18:04 CET 2024
On Thu, Dec 14, 2023 at 01:42:07PM +0100, Lukas Wagner wrote:
> by a matcher.
^ this line should be part of the subject
>
> In the 'delete'-handler targets, we check if a
> target is still referenced by a matcher - if it is, we return an
> error. For built-in targets, this is actually not necessary, since
> 'deleting' a built-in only resets it to its default settings - it will
> continue to exist after that.
> The user could easily trigger this if 'mail-to-root', which is
> referenced by 'default-matcher' is modified and then reset to its
> defaults: An error is shown, the built-in target is not reset.
>
> This commit disables this check if it is a built-in target.
>
> Renamed the helper 'ensure_unused' to 'ensure_safe_to_delete' in the
> process.
>
> Also fixed the tests in api::test - they were never executed due to a
> faulty #[cfg] directive.
>
> Signed-off-by: Lukas Wagner <l.wagner at proxmox.com>
> ---
> proxmox-notify/src/api/gotify.rs | 2 +-
> proxmox-notify/src/api/mod.rs | 74 ++++++++++++++++++++++--------
> proxmox-notify/src/api/sendmail.rs | 2 +-
> proxmox-notify/src/api/smtp.rs | 2 +-
> 4 files changed, 59 insertions(+), 21 deletions(-)
>
> diff --git a/proxmox-notify/src/api/gotify.rs b/proxmox-notify/src/api/gotify.rs
> index 98ff255..a93a024 100644
> --- a/proxmox-notify/src/api/gotify.rs
> +++ b/proxmox-notify/src/api/gotify.rs
> @@ -136,7 +136,7 @@ pub fn update_endpoint(
> pub fn delete_gotify_endpoint(config: &mut Config, name: &str) -> Result<(), HttpError> {
> // Check if the endpoint exists
> let _ = get_endpoint(config, name)?;
> - super::ensure_unused(config, name)?;
> + super::ensure_safe_to_delete(config, name)?;
>
> remove_private_config_entry(config, name)?;
> config.config.sections.remove(name);
> diff --git a/proxmox-notify/src/api/mod.rs b/proxmox-notify/src/api/mod.rs
> index 762d448..919dcb9 100644
> --- a/proxmox-notify/src/api/mod.rs
> +++ b/proxmox-notify/src/api/mod.rs
> @@ -3,7 +3,7 @@ use std::collections::HashSet;
>
> use proxmox_http_error::HttpError;
>
> -use crate::Config;
> +use crate::{Config, Origin};
>
> pub mod common;
> #[cfg(feature = "gotify")]
> @@ -111,7 +111,26 @@ fn get_referrers(config: &Config, entity: &str) -> Result<HashSet<String>, HttpE
> Ok(referrers)
> }
>
> -fn ensure_unused(config: &Config, entity: &str) -> Result<(), HttpError> {
> +fn ensure_safe_to_delete(config: &Config, entity: &str) -> Result<(), HttpError> {
> + if let Some(entity_config) = config.config.sections.get(entity) {
> + let origin: Option<Origin> = entity_config
> + .1
> + .as_object()
> + .and_then(|obj| obj.get("origin"))
> + .cloned()
> + .and_then(|origin_value| serde_json::from_value(origin_value).ok());
^ .cloned() should not be necessary, Value and &Value implement
`Deserialize_r_`, so you can use:
.and_then(|origin_value| Origin::deserialize(origin_value).ok());
Additionally, Value returns a valid `Null` value when trying to index a
non-object as well as when the key does not exist in the object, so it
should be possible to do replace all of the above and the line below
with:
if let Some(origin) = Origin::deserialize(&entity_config.1["origin"]) {
> + if let Some(origin) = origin {
> + // Built-ins are never actually removed, only reset to their default
> + // It is thus safe to do the reset if another entity depends
> + // on it
> + if origin == Origin::Builtin || origin == Origin::ModifiedBuiltin {
> + return Ok(());
> + }
> + }
> + } else {
> + http_bail!(NOT_FOUND, "entity '{entity}' does not exist");
> + }
> +
> let referrers = get_referrers(config, entity)?;
>
> if !referrers.is_empty() {
> @@ -191,31 +210,31 @@ mod test_helpers {
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