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feat: Add hooks implementation (#95)
Signed-off-by: Maxim Fischuk <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| use open_feature::{ | ||
| provider::{FeatureProvider, ProviderMetadata, ProviderStatus, ResolutionDetails}, | ||
| EvaluationContext, EvaluationDetails, EvaluationError, EvaluationOptions, EvaluationResult, | ||
| Hook, HookContext, HookHints, OpenFeature, StructValue, Value, | ||
| }; | ||
|
|
||
| struct DummyProvider(ProviderMetadata); | ||
|
|
||
| impl Default for DummyProvider { | ||
| fn default() -> Self { | ||
| Self(ProviderMetadata::new("Dummy Provider")) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl FeatureProvider for DummyProvider { | ||
| fn metadata(&self) -> &ProviderMetadata { | ||
| &self.0 | ||
| } | ||
|
|
||
| fn status(&self) -> ProviderStatus { | ||
| ProviderStatus::Ready | ||
| } | ||
|
|
||
| async fn resolve_bool_value( | ||
| &self, | ||
| _flag_key: &str, | ||
| _evaluation_context: &EvaluationContext, | ||
| ) -> EvaluationResult<ResolutionDetails<bool>> { | ||
| Ok(ResolutionDetails::new(true)) | ||
| } | ||
|
|
||
| async fn resolve_int_value( | ||
| &self, | ||
| _flag_key: &str, | ||
| _evaluation_context: &EvaluationContext, | ||
| ) -> EvaluationResult<ResolutionDetails<i64>> { | ||
| unimplemented!() | ||
| } | ||
|
|
||
| async fn resolve_float_value( | ||
| &self, | ||
| _flag_key: &str, | ||
| _evaluation_context: &EvaluationContext, | ||
| ) -> EvaluationResult<ResolutionDetails<f64>> { | ||
| unimplemented!() | ||
| } | ||
|
|
||
| async fn resolve_string_value( | ||
| &self, | ||
| _flag_key: &str, | ||
| _evaluation_context: &EvaluationContext, | ||
| ) -> EvaluationResult<ResolutionDetails<String>> { | ||
| unimplemented!() | ||
| } | ||
|
|
||
| async fn resolve_struct_value( | ||
| &self, | ||
| _flag_key: &str, | ||
| _evaluation_context: &EvaluationContext, | ||
| ) -> Result<ResolutionDetails<StructValue>, EvaluationError> { | ||
| unimplemented!() | ||
| } | ||
| } | ||
|
|
||
| struct DummyLoggingHook(String); | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl Hook for DummyLoggingHook { | ||
| async fn before<'a>( | ||
| &self, | ||
| context: &HookContext<'a>, | ||
| _hints: Option<&'a HookHints>, | ||
| ) -> Result<Option<EvaluationContext>, EvaluationError> { | ||
| log::info!( | ||
| "Evaluating({}) flag {} of type {}", | ||
| self.0, | ||
| context.flag_key, | ||
| context.flag_type | ||
| ); | ||
|
|
||
| Ok(None) | ||
| } | ||
|
|
||
| async fn after<'a>( | ||
| &self, | ||
| context: &HookContext<'a>, | ||
| details: &EvaluationDetails<Value>, | ||
| _hints: Option<&'a HookHints>, | ||
| ) -> Result<(), EvaluationError> { | ||
| log::info!( | ||
| "Flag({}) {} of type {} evaluated to {:?}", | ||
| self.0, | ||
| context.flag_key, | ||
| context.flag_type, | ||
| details.value | ||
| ); | ||
|
|
||
| Ok(()) | ||
| } | ||
|
|
||
| async fn error<'a>( | ||
| &self, | ||
| context: &HookContext<'a>, | ||
| error: &EvaluationError, | ||
| _hints: Option<&'a HookHints>, | ||
| ) { | ||
| log::error!( | ||
| "Error({}) evaluating flag {} of type {}: {:?}", | ||
| self.0, | ||
| context.flag_key, | ||
| context.flag_type, | ||
| error | ||
| ); | ||
| } | ||
|
|
||
| async fn finally<'a>( | ||
| &self, | ||
| context: &HookContext<'a>, | ||
| _: &EvaluationDetails<Value>, | ||
| _hints: Option<&'a HookHints>, | ||
| ) { | ||
| log::info!( | ||
| "Finally({}) evaluating flag {} of type {}", | ||
| self.0, | ||
| context.flag_key, | ||
| context.flag_type | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| #[tokio::main] | ||
| async fn main() { | ||
| env_logger::builder() | ||
| .filter_level(log::LevelFilter::Info) | ||
| .init(); | ||
|
|
||
| let mut api = OpenFeature::singleton_mut().await; | ||
| api.set_provider(DummyProvider::default()).await; | ||
| api.add_hook(DummyLoggingHook("global".to_string())).await; | ||
| drop(api); | ||
|
|
||
| let client = OpenFeature::singleton() | ||
| .await | ||
| .create_client() | ||
| .with_hook(DummyLoggingHook("client".to_string())); // Add a client-level hook | ||
|
|
||
| let eval = EvaluationOptions::default().with_hook(DummyLoggingHook("eval".to_string())); | ||
| let feature = client | ||
| .get_bool_details("my_feature", None, Some(&eval)) | ||
| .await | ||
| .unwrap(); | ||
|
|
||
| println!("Feature value: {}", feature.value); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| use open_feature::{provider::NoOpProvider, EvaluationOptions, OpenFeature}; | ||
|
|
||
| #[tokio::main] | ||
| async fn main() { | ||
| init_logger(); | ||
|
|
||
| let mut api = OpenFeature::singleton_mut().await; | ||
| api.set_provider(NoOpProvider::default()).await; | ||
| drop(api); | ||
|
|
||
| let client = OpenFeature::singleton() | ||
| .await | ||
| .create_client() | ||
| .with_logging_hook(true); // Add a client-level hook | ||
|
|
||
| let eval = EvaluationOptions::default(); | ||
| let _ = client | ||
| .get_bool_details("my_feature", None, Some(&eval)) | ||
| .await; | ||
| } | ||
|
|
||
| #[cfg(not(feature = "structured-logging"))] | ||
| fn init_logger() { | ||
| env_logger::builder() | ||
| .filter_level(log::LevelFilter::Debug) | ||
| .init(); | ||
| } | ||
|
|
||
| #[cfg(feature = "structured-logging")] | ||
| fn init_logger() { | ||
| structured_logger::Builder::with_level("debug").init(); | ||
| } |
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