feat: add log framework

Cargo.toml

@@ -21,6 +21,7 @@ path = "src/lib.rs"
 [features]
 default = ["http"]
 http = ["dep:http"]
+log = ["dep:log", "dep:tui-logger"]
 
 [dependencies]
 anyhow = "1"
@@ -41,6 +42,9 @@ hdrhistogram = "7.5"
 itertools = "0.12"
 tabled = "0.15"
 http = { version = "1.1", optional = true }
+tui-logger = { version = "0.11", optional = true }
+log = { version = "0.4", optional = true }
+cfg-if = "1"
 
 [dev-dependencies]
 tokio = { version = "1.36", features = ["rt-multi-thread"] }

examples/simple_stateless.rs

@@ -28,6 +28,13 @@ impl StatelessBenchSuite for SimpleBench {
 
         // simulate items processed in current iteration
         let items = info.worker_seq % 100;
+
+        #[cfg(feature = "log")]
+        // press `l` to see log output
+        if status.kind() != rlt::StatusKind::Success {
+            log::warn!("duration: {:?}, status: {}, items: {}", duration, status, items);
+        }
+
         Ok(IterReport { duration, status, bytes: items * 1024, items })
     }
 }

src/cli.rs

@@ -197,7 +197,7 @@ where
     let runner = Runner::new(bench_suite, opts, res_tx, pause_rx, cancel.clone());
 
     let mut collector: Box<dyn ReportCollector> = match cli.collector() {
-        Collector::Tui => Box::new(TuiCollector::new(opts, cli.fps, res_rx, pause_tx, cancel)),
+        Collector::Tui => Box::new(TuiCollector::new(opts, cli.fps, res_rx, pause_tx, cancel)?),
         Collector::Silent => Box::new(SilentCollector::new(opts, res_rx, cancel)),
     };