v0.34.0_1

src/traffic/tests.rs

@@ -42,6 +42,28 @@ mod tests {
         assert_eq!(view.client_ips[0].count, 1);
     }
 
+    #[tokio::test]
+    async fn saturated_analytics_queue_does_not_build_discarded_samples() {
+        let analytics = Analytics::start(CancellationToken::new());
+        let made = AtomicU64::new(0);
+        // No .await until the queue is filled: on this current-thread test
+        // runtime the consumer has not removed a sample in the background.
+        for _ in 0..(QUEUE_CAPACITY + 5) {
+            analytics.push_lazy(|| {
+                made.fetch_add(1, Ordering::Relaxed);
+                Sample {
+                    vhost: "site".into(), route: None, method: "GET".into(),
+                    path: "/".into(), client_ip: None, status: 200,
+                    duration_ms: 1, request_bytes: 0, response_bytes: 1040,
+                    cache: "BYPASS", source: "reverse_proxy",
+                    user_agent: None, country: None,
+                }
+            });
+        }
+        assert_eq!(made.load(Ordering::Relaxed), QUEUE_CAPACITY as u64);
+        assert_eq!(analytics.dropped.load(Ordering::Relaxed), 5);
+    }
+
     #[test]
     fn prometheus_dimensions_are_fixed_cardinality() {
         assert_eq!(method_family("GET"), "GET");