v0.34.0_1

src/traffic.rs

@@ -243,8 +243,18 @@ impl Analytics {
     }
 
     pub fn push(&self, sample: Sample) {
-        if self.tx.try_send(sample).is_err() {
-            self.dropped.fetch_add(1, Ordering::Relaxed);
+        self.push_lazy(|| sample);
+    }
+
+    /// Acquire queue capacity before constructing owned analytics fields.
+    /// Overflow accounting is identical to `push`, and the queue remains
+    /// bounded. In saturated traffic the rejected sample allocates nothing.
+    pub fn push_lazy(&self, make_sample: impl FnOnce() -> Sample) {
+        match self.tx.try_reserve() {
+            Ok(permit) => permit.send(make_sample()),
+            Err(_) => {
+                self.dropped.fetch_add(1, Ordering::Relaxed);
+            }
         }
     }