Add simple binary for testing mempool tracker

src/bin/tracker.rs

@@ -0,0 +1,30 @@
+extern crate indexrs;
+extern crate simplelog;
+#[macro_use]
+extern crate log;
+
+use indexrs::{daemon, mempool};
+use std::thread;
+use std::time::{Duration, Instant};
+
+fn main() {
+    use simplelog::*;
+    let mut cfg = Config::default();
+    cfg.time_format = Some("%F %H:%M:%S%.3f");
+    CombinedLogger::init(vec![
+        TermLogger::new(LevelFilter::Debug, cfg.clone()).unwrap(),
+    ]).unwrap();
+
+    let daemon = daemon::Daemon::new("localhost:8332");
+    let mut tracker = mempool::Tracker::new(&daemon);
+    loop {
+        let t = Instant::now();
+        tracker.update_from_daemon().unwrap();
+        let dt = t.elapsed();
+        info!(
+            "update took {:.3} ms",
+            (dt.as_secs() as f64 + 1e-9f64 * dt.subsec_nanos() as f64) * 1e3
+        );
+        thread::sleep(Duration::from_secs(1));
+    }
+}