pub trait ExternalGuard: Send + Sync {
// Required methods
fn name(&self) -> &str;
fn cache_key(&self, ctx: &GuardCallContext) -> Option<String>;
fn eval<'life0, 'life1, 'async_trait>(
&'life0 self,
ctx: &'life1 GuardCallContext,
) -> Pin<Box<dyn Future<Output = Result<Verdict, ExternalGuardError>> + Send + 'async_trait>>
where 'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait;
}Expand description
Trait implemented by guards that call external services.
Keep implementations free of retry / caching / rate-limiting concerns
– those are handled by AsyncGuardAdapter. The eval method should
describe a single attempt: one HTTP call (or equivalent), one decision.
Required Methods§
Sourcefn cache_key(&self, ctx: &GuardCallContext) -> Option<String>
fn cache_key(&self, ctx: &GuardCallContext) -> Option<String>
Return a cache key for this request, or None to skip caching.
Sourcefn eval<'life0, 'life1, 'async_trait>(
&'life0 self,
ctx: &'life1 GuardCallContext,
) -> Pin<Box<dyn Future<Output = Result<Verdict, ExternalGuardError>> + Send + 'async_trait>>where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
fn eval<'life0, 'life1, 'async_trait>(
&'life0 self,
ctx: &'life1 GuardCallContext,
) -> Pin<Box<dyn Future<Output = Result<Verdict, ExternalGuardError>> + Send + 'async_trait>>where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
Evaluate the request against the external service.