Retrieve current span instead of manual enter

limitador-server/src/envoy_rls/server.rs

@@ -6,7 +6,7 @@ use std::sync::Arc;
 
 use tonic::codegen::http::HeaderMap;
 use tonic::{transport, transport::Server, Request, Response, Status};
-use tracing::info_span;
+use tracing::Span;
 use tracing_opentelemetry::OpenTelemetrySpanExt;
 
 use limitador::counter::Counter;
@@ -45,21 +45,20 @@ impl MyRateLimiter {
 
 #[tonic::async_trait]
 impl RateLimitService for MyRateLimiter {
+    #[tracing::instrument(skip_all)]
     async fn should_rate_limit(
         &self,
         request: Request<RateLimitRequest>,
     ) -> Result<Response<RateLimitResponse>, Status> {
-        let span = info_span!("should_rate_limit");
-        let _enter = span.enter();
         debug!("Request received: {:?}", request);
 
         let mut values: HashMap<String, String> = HashMap::new();
         let (metadata, _ext, req) = request.into_parts();
-
-        let rl_headers = RateLimitRequestHeaders::new(metadata.into_headers());
         let namespace = req.domain;
+        let rl_headers = RateLimitRequestHeaders::new(metadata.into_headers());
         let parent_context =
             global::get_text_map_propagator(|propagator| propagator.extract(&rl_headers));
+        let span = Span::current();
         span.set_parent(parent_context);
 
         if namespace.is_empty() {
@@ -217,7 +216,7 @@ impl RateLimitRequestHeaders {
 impl Extractor for RateLimitRequestHeaders {
     fn get(&self, key: &str) -> Option<&str> {
         match self.inner.get(key) {
-            Some(v) => Some(v.to_str().unwrap_or("")),
+            Some(v) => v.to_str().ok(),
             None => None,
         }
     }