cassandra passthrough flamegraph (#1105)

shotover-proxy/examples/cassandra_flamegraph.rs

@@ -0,0 +1,36 @@
+use test_helpers::docker_compose::DockerCompose;
+use test_helpers::flamegraph::Perf;
+use test_helpers::latte::Latte;
+use test_helpers::shotover_process::ShotoverProcessBuilder;
+
+// To get useful results you will need to modify the Cargo.toml like:
+// [profile.release]
+// #lto = "fat"
+// codegen-units = 1
+// debug = true
+
+#[tokio::main]
+async fn main() {
+    test_helpers::bench::init();
+
+    let latte = Latte::new(10000000, 1);
+    let config_dir = "example-configs/cassandra-passthrough";
+    let bench = "read";
+    {
+        let _compose = DockerCompose::new(&format!("{}/docker-compose.yaml", config_dir));
+        latte.init(bench, "localhost:9043");
+
+        let shotover =
+            ShotoverProcessBuilder::new_with_topology(&format!("{}/topology.yaml", config_dir))
+                .start()
+                .await;
+
+        let perf = Perf::new(shotover.child.as_ref().unwrap().id().unwrap());
+
+        println!("Benching Shotover ...");
+        latte.bench(bench, "localhost:9042");
+
+        shotover.shutdown_and_then_consume_events(&[]).await;
+        perf.flamegraph();
+    }
+}